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Tampilkan postingan dengan label xml. Tampilkan semua postingan

Tampilkan postingan dengan label xml. Tampilkan semua postingan

How to align your TabHost at the bottom of the screen

Posted by Unknown Kamis, 14 November 2013 0 komentar

There is a simplest way to align Tabbar at the bottom of the page.
The code is given below copy and download the code and try it...

In the previous example we learned a simple example to add Tabs to our application.Only a small change can give you tabs at the bottom of the page.

In the previous example the xml was like this...

 

<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    tools:context=".MainActivity" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" >

        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent" />

    </LinearLayout>

Instead of using Linear Layout use Relative Layout like below and use "android:layout_alignParentBottom="true"" for Tab Widget.

 
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    tools:context=".MainActivity" >

    <RelativeLayout
		android:layout_height="fill_parent"
		android:layout_width="fill_parent">


        <TabWidget
            android:id="@android:id/tabs"
            android:layout_alignParentBottom="true"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent" />
    </RelativeLayout>

</TabHost>

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Change Tabbar Text (title) dynamically in Android - a simple example

Posted by Unknown Senin, 11 November 2013 0 komentar

Changing title of tabbar is bit easier in android
Copy and download the code below and try it....

Basic tabbar tutorials see here...

 
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;
import android.widget.TabWidget;
import android.widget.TextView;
import android.app.TabActivity;
import android.content.Intent;


public class MainActivity extends TabActivity {

 TabWidget tw;
 TabHost tabHost;
 @Override  
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  /** TabHost will have Tabs */
         tabHost = (TabHost)findViewById(android.R.id.tabhost);
        
        TabSpec firstTabSpec = tabHost.newTabSpec("tab_id1");
        TabSpec secondTabSpec = tabHost.newTabSpec("tab_id2");
        TabSpec thirdTabSpec = tabHost.newTabSpec("tab_id3");
        
        firstTabSpec.setIndicator("First").setContent(new Intent(this,Tab1.class));
        secondTabSpec.setIndicator("Second ").setContent(new Intent(this,Tab2.class));
        thirdTabSpec.setIndicator("Third").setContent(new Intent(this,Tab3.class));
        
        
        tabHost.addTab(firstTabSpec);
        tabHost.addTab(secondTabSpec);
        tabHost.addTab(thirdTabSpec);
        
        tw = getTabWidget();
        View tab1View = tw.getChildAt(0);
        tab1View.setId(1);
 
        View tab2View = tw.getChildAt(1);
        tab2View.setId(2);
    
        View tab3View = tw.getChildAt(2);
        tab3View.setId(3);
 
        tab1View.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                ((TextView)tabHost.getTabWidget().getChildAt(v.getId()-1).findViewById(android.R.id.title)).setText("my Tab " + v.getId());
            }
        });
 
        tab2View.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                ((TextView)tabHost.getTabWidget().getChildAt(v.getId()-1).findViewById(android.R.id.title)).setText("my Tab " + v.getId());
            }
        });
 
        tab3View.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                ((TextView)tabHost.getTabWidget().getChildAt(v.getId()-1).findViewById(android.R.id.title)).setText("my Tab " + v.getId());
            }
        });
 
 } }

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Using TabHost to create a simple Tabbar application - An Android Example

Posted by Unknown Minggu, 10 November 2013 0 komentar

For creating a tabbar application first create a tabhost object to create tabs
In activity_main.xml we create TabHost and specify a layout where we are going to insert the tabs.
Copy and download the code and try it yourself....

Now we are going to create three tabs.
Lets us now first make the xml for it

activity_main.xml :
TabHost provided flexibility of managing data in different views by providing tabbed interface(compared to TabLayout). TabHost basically a container, where you need to put tab widget, which will host tabbed interface and FrameLayout, within which the different views are presented.

TabHost ( main container of tab view )
TabWidget ( used to navigate between tabs )
FrameLayout ( for tab content )

 
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    tools:context=".MainActivity" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" >

        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent" />

    </LinearLayout>

tab1.xml :

 
<?xml version="1.0" encoding="utf-8"?>
 <LinearLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent">
     
   <TextView android:text="TAB1 DATA"
             android:padding="15dip"
             android:textSize="18dip"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"/>
</LinearLayout>

tab2.xml :

 
<?xml version="1.0" encoding="utf-8"?>
 <LinearLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent">
     
   <TextView android:text="TAB2 DATA"
             android:padding="15dip"
             android:textSize="18dip"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"/>
 </LinearLayout>

tab3.xml :

 
<?xml version="1.0" encoding="utf-8"?>
 <LinearLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent">
     
   <TextView android:text="TAB3 DATA"
             android:padding="15dip"
             android:textSize="18dip"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content">
 </LinearLayout>

Now create three java class for each of the tabs..

Tab1.java :

 
import android.app.Activity;
import android.os.Bundle;

public class Tab1 extends Activity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(R.layout.tab1);
 }
}

Tab2.java :

 
import android.app.Activity;
import android.os.Bundle;

public class Tab2 extends Activity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(R.layout.tab2);
 }

}

Tab3.java :

 
import android.app.Activity;
import android.os.Bundle;

public class Tab3 extends Activity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(R.layout.tab3);
 }

}

Donot forget to introduce the newly created java class to the android manifest file...

AndroidManifest.xml

Mainactivity.java

TabSpec used to create a new tab.
By using TabSpec only we can able to setContent to the tab.
By using TabSpec setIndicator() we can set name to tab.

 
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;
import android.app.TabActivity;
import android.content.Intent;


public class MainActivity extends TabActivity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
  
 /** TabHost will have Tabs */
        TabHost tabHost = (TabHost)findViewById(android.R.id.tabhost);
        
        TabSpec firstTabSpec = tabHost.newTabSpec("tab_id1");
        TabSpec secondTabSpec = tabHost.newTabSpec("tab_id2");
        TabSpec thirdTabSpec = tabHost.newTabSpec("tab_id3");
        
        firstTabSpec.setIndicator("First").setContent(new Intent(this,Tab1.class));
        secondTabSpec.setIndicator("Second ").setContent(new Intent(this,Tab2.class));
        thirdTabSpec.setIndicator("Third").setContent(new Intent(this,Tab3.class));
               
        tabHost.addTab(firstTabSpec);
        tabHost.addTab(secondTabSpec);
        tabHost.addTab(thirdTabSpec);
 
 } }

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Custom Toggle Button in ANDROID

Posted by Unknown Kamis, 20 Juni 2013 0 komentar

Toggle Button is a special button that has two states for eg :"on" and "off".It can be an alternative to Radio Buttons.
Method to create a Custom Toggle Button is given below :

in custom_btn.xml

in style.xml :

in custom_toggle_bg.xml :

in custom_toggle_btn.xml :

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Delete A row in ListView with Animation

Posted by Unknown Senin, 17 Juni 2013 0 komentar

Listview is simply a group of view that displays a list of scrolling items. "Adapters" are used to insert list items to the list.By default we are able to provide only text as list items.In order to delete a row from listview, copy or download this javacode and try yourself.
Also see here :

java file :

public class SimpleListViewActivity extends Activity {

	private ListView mainListView;
	private ArrayAdapter<String> listAdapter;
	ArrayList<String> all_rowtext = new ArrayList<String>() ;
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		// Find the ListView resource.
		mainListView = (ListView) findViewById(R.id.mainListView);
		all_rowtext.add("Angel");
		all_rowtext.add("Mark");
		all_rowtext.add("Coding");
		all_rowtext.add("Playground");
		all_rowtext.add("For");
		all_rowtext.add("All");
		all_rowtext.add("Android");
		all_rowtext.add("Coderz");
		// Create ArrayAdapter using the planet list.
		listAdapter = new ArrayAdapter<String>(this, R.layout.singlerow,
				all_rowtext);
		// Set the ArrayAdapter as the ListView's adapter.
		mainListView.setAdapter(listAdapter);
		mainListView
				.setOnItemClickListener(new AdapterView.OnItemClickListener() {
					public void onItemClick(AdapterView<?> parent,
							View rowView, int positon, long id) {
						Toast.makeText(rowView.getContext(), "" + positon,
								Toast.LENGTH_LONG).show();
						removeListItem(rowView, positon);
					}
				});
	}

	protected void removeListItem(View rowView, final int positon) {
		final Animation animation = AnimationUtils.loadAnimation(
				SimpleListViewActivity.this, android.R.anim.slide_in_left);
		rowView.startAnimation(animation);
		Handler handle = new Handler();
		handle.postDelayed(new Runnable() {

			public void run() {
				all_rowtext.remove(positon);
				listAdapter.notifyDataSetChanged();
			}
		}, 1000);
}}

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Customized Spinners in Android

Posted by Unknown Rabu, 24 April 2013 0 komentar

See more basics on Android along with interview questions

The Android Spinner Control is definitely the equivalent of the drop-down selector . By making use of spinner control you basically obtain the capability to choose from a list without taking up all of the display screen space of a ListView.

Spinners provide a quick way to select one value from a set. In the default state, a spinner shows its currently selected value. Touching the spinner displays a dropdown menu with all other available values, from which the user can select a new one.

You can add a spinner to your layout with the Spinner object. You should usually do so in your xml layout with a <spinner> element. For example:

 <Spinner
    android:id="@+id/myspinner"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

Also See....Simple Spinners In Android

Here we are going to deal with Customized Spinners.Here we go with java code samples.

in java file:

public class Custom_spinner extends Activity {
	String[] data1 = { "Java", "Android","Blackberry", "Apple", "Windows" };
	
	String[] data2 = { "Developed by Sun Microsystems", "Android is a Linux-based operating system",
			"Designed and marketed by Research In Motion Limited ","Designed and marketed by Apple Inc" 
	        ,"developed, marketed, and sold by Microsoft."};
	
	Integer[] images = { R.drawable.java, R.drawable.android,
			R.drawable.blackberry, R.drawable.apple, R.drawable.windows };

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.custom_spinner);
		Spinner mySpinner = (Spinner) findViewById(R.id.spinner1);
		mySpinner.setAdapter(new MyAdapter(this, R.layout.cus_row, data1));
	}

	public class MyAdapter extends ArrayAdapter<String> {

		public MyAdapter(Context context, int textViewResourceId,
				String[] objects) {
			super(context, textViewResourceId, objects);
			// TODO Auto-generated constructor stub
		}

		@Override
		public View getDropDownView(int position, View convertView,
				ViewGroup parent) {
			return getCustomView(position, convertView, parent);
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			return getCustomView(position, convertView, parent);
		}

		public View getCustomView(int position, View convertView,
				ViewGroup parent) {

			LayoutInflater inflater = getLayoutInflater();//inflate xml for each row
			View row = inflater.inflate(R.layout.cus_row, parent, false);
			TextView label = (TextView) row.findViewById(R.id.textView1);
			label.setText(data1[position]);

			TextView sub = (TextView) row.findViewById(R.id.textView2);
			sub.setText(data2[position]);

			ImageView icon = (ImageView) row.findViewById(R.id.imageView1);
			icon.setImageResource(images[position]);

			return row;
		} }}

in custom_spinner.xml (main xml file) :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp" >
    <Spinner
        
        android:id="@+id/spinner1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:drawSelectorOnTop="true"
        android:background="@drawable/purple"
        >
    </Spinner>
</RelativeLayout>

in cus_row.xml (inflated xml file) :

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/relativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="3dip" >

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <ImageView
            android:id="@+id/imageView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_launcher" >
        </ImageView>
    </LinearLayout>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:paddingLeft="70dp" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textStyle="bold" >
        </TextView>

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >
        </TextView>
    </LinearLayout>

</RelativeLayout>

@drawable/purple.xml :

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BroadcastReceiver for Screen On/Off in ANDROID

Posted by Unknown Senin, 22 April 2013 0 komentar

If wanted to call a broadcast for screen on/off you can get the code sniffet from here.
Here I have used dynamic calling of Broadcast and the java source code is given below.

get more details about broadcast from :

Broadcast Receiver Introduction in Android

BroadcastReceiver to get Battery Level

in java file:

 
public class MainActivity extends Activity {
  //Create broadcast object
    BroadcastReceiver mybroadcast = new BroadcastReceiver() {
  
  //When Event is published, onReceive method is called
  @Override
  public void onReceive(Context context, Intent intent) {
   // TODO Auto-generated method stub
       Log.i("[BroadcastReceiver]", "MyReceiver");

          if(intent.getAction().equals(Intent.ACTION_SCREEN_ON)){
              Log.i("[BroadcastReceiver]", "Screen ON");
          }
          else if(intent.getAction().equals(Intent.ACTION_SCREEN_OFF)){
              Log.i("[BroadcastReceiver]", "Screen OFF");
          }
   }};

   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
 
       registerReceiver(mybroadcast, new IntentFilter(Intent.ACTION_SCREEN_ON));
       registerReceiver(mybroadcast, new IntentFilter(Intent.ACTION_SCREEN_OFF));
   }  
}

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BroadcastReceiver to get Battery Level - simple Example using dynamic calling of BroadCast in ANDROID

Posted by Unknown Senin, 08 April 2013 0 komentar

See Introduction for Broadcast Receiver here:

When you need to call a broadcast (suppose here battery value) you need to register the broadcast and when the event is published it will call onReceive method which have context and particular intent as parameter.

 
public class Broadcast extends Activity {
  //Create broadcast object
    BroadcastReceiver mybroadcast = new BroadcastReceiver() {
   
 //When Event is published, onReceive method is called
    @Override
 public void onReceive(Context context, Intent intent) {
     //Get battery percentage
      int batterylevel = intent.getIntExtra("level", 0);     
     //get progressbar
      ProgressBar myprogressbar = (ProgressBar) findViewById(R.id.progressbar);
      myprogressbar.setProgress(batterylevel);
      TextView tv = (TextView) findViewById(R.id.textfield);
    //Set TextView with text
      tv.setText("Battery Level: " + Integer.toString(batterylevel) + "%");
     }
 };
 
    @Override
   public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_broadcast);    
      registerReceiver(mybroadcast, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
    } 
}

The arguments of the registerReceiver() method
receiver :: The BroadcastReceiver you want to register
filter :: The IntentFilter object that specifies which event your receiver should listen to.

To learn more on event and usages click here...

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Get Id of inflated xml in ANDROID

Posted by Unknown Selasa, 19 Maret 2013 0 komentar

How to inflate an xml see my previous post.
Suppose we have button in the inflated xml we can get the id like this:

 Button b1= (Button) v1.findViewById(R.id.button1); 
             //where v1 is the View

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How to enable and disable Wifi in ANDROID?

Posted by Unknown Rabu, 13 Maret 2013 0 komentar


WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
wifi.setWifiEnabled(enabled);

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Using external font in ANDROID

Posted by Unknown Selasa, 12 Maret 2013 0 komentar

    

TextView text =(TextView) findViewById(R.id.textview);
    Typeface face;
    face = Typeface.createFromAsset(getAssets(), "AMAZB.TTF");
    text.setTypeface(face);
    text.setTextSize(30);
    text.setTextColor(Color.WHITE);

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Inflate an xml in ANDROID

Posted by Unknown 0 komentar

  RelativeLayout mainLayout = (RelativeLayout)findViewById(R.id.relative);
    //create a view to inflate the layout_item (
                        the xml with the textView created before)
  View view = getLayoutInflater().inflate(R.layout.inflate,mainLayout,false);
   //add the view to the main layout
  mainLayout.addView(view);

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Merge two layouts in xml

Posted by Unknown 0 komentar

In any one of the xml include the other xml like this :

<include layout="@layout/newxmlname"/>

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Parsing an XML from Online in Android

Posted by Unknown Senin, 04 Maret 2013 0 komentar

Create a fresh project and name it ParseXMLDemo
Then in the ParseXMLDemo.java file copy this code

|
import java.util.ArrayList;
import java.util.HashMap;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

public class ParseXMLDemo extends ListActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        ArrayList<String> mylist = new ArrayList<String>();
        String xml = ParseXMLMethods.getXML();
        Document doc = ParseXMLMethods.XMLfromString(xml);
        int numResults = ParseXMLMethods.numResults(doc);

        if((numResults <= 0)){
          Toast.makeText(ParseXMLDemo.this, "There is no data in the xml file", Toast.LENGTH_LONG).show();
              finish();
        }

        NodeList children = doc.getElementsByTagName("os");
        for (int i = 0; i < children.getLength(); i++)
          {
            HashMap<string string=""> map =new HashMap<string string="">();
            Element e = (Element)children.item(i);
            map.put("id", ParseXMLMethods.getValue(e, "id"));
            map.put("name", ParseXMLMethods.getValue(e, "name"));
            map.put("site", ParseXMLMethods.getValue(e, "site"));
            mylist.add(map);
          }
        ListAdapter adapter = new SimpleAdapter(this,mylist ,R .layout.list_layout,
                          new String[] { "name", "site" },
                          new int[] { R.id.title, R.id.subtitle});

       setListAdapter(adapter);

       
        final ListView lv = getListView();
        lv.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView parent, View view, int position, long id) {
                @SuppressWarnings("unchecked")
                HashMap<String, String> o = (HashMap<String, String>) lv.getItemAtPosition(position);
                Toast.makeText(ParseXMLDemo.this,o.get("name"), Toast.LENGTH_LONG).show();
            }
        });
    } }

Now create another java file inside the src folder and name it ParseXMLMethods.java and copy this contents into it.

import java.io.IOException;
import java.io.StringReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

public class ParseXMLMethods {

    public final static Document XMLfromString(String xml){

        Document doc = null;
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        try {
            DocumentBuilder db = dbf.newDocumentBuilder();
            InputSource is = new InputSource();
            is.setCharacterStream(new StringReader(xml));
            doc = db.parse(is);
        }  
            catch (ParserConfigurationException e) {
            System.out.println("XML parse error: " + e.getMessage());
            return null;
        }
            catch (SAXException e) {
            System.out.println("Wrong XML file structure: " +e.getMessage());
            return null;
        }
            catch (IOException e) {
            System.out.println("I/O exeption: " +e.getMessage());
            return null;
        }
        return doc;
    }
     public final static String getElementValue( Node elem ) {
         Node kid;
         if( elem != null){
             if (elem.hasChildNodes()){
                 for( kid = elem.getFirstChild(); kid != null;kid = kid.getNextSibling() ){
                     if( kid.getNodeType() == Node.TEXT_NODE  ){
                         return kid.getNodeValue();
                     }
                 }
             }
         }
         return "";
     }
     public static String getXML(){
            String line = null;
            try {
           DefaultHttpClient httpClient = new DefaultHttpClient();
           HttpPost httpPost = new HttpPost("http://new ABC.com/xml/test.xml");
           HttpResponse httpResponse = httpClient.execute(httpPost);
           HttpEntity httpEntity = httpResponse.getEntity();
           line = EntityUtils.toString(httpEntity);
            } catch (Exception e) {
             line = "Internet Connection Error >> " + e.getMessage();
            }
            return line;
    }

    public static int numResults(Document doc)
      {
        Node results = doc.getDocumentElement();
        int res = -1;
        try
        {
          res = Integer.valueOf(results.getAttributes()
                         .getNamedItem("count").getNodeValue());
        }catch(Exception e ){
            res = -1;
        }
        return res;
    }

    public static String getValue(Element item, String str)
    {
        NodeList n = item.getElementsByTagName(str);
        return ParseXMLMethods.getElementValue(n.item(0));
    }
}

in main.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"> 

    <ListView
        android:id="@id/android:list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:background="#FF0000"
        android:drawSelectorOnTop="false"/> 
</LinearLayout>

list_layout.xml:

< ?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="7dp"> 
<TextView
    android:id="@+id/title"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:padding="2dp"
    android:textSize="20dp"
    android:textStyle="bold"/> 
    <TextView
    android:id="@+id/subtitle"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:padding="2dp"
    android:textSize="14dp"
    android:textColor="#000000"/> 
</LinearLayout>

Strings.xml:

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
    <string name="hello"> Hello World, ParseXMLDemo!</string> 
    <string name="app_name"> ParseXMLDemo New ABC.com</string> 
</resources>

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Expandable ListView in ANDROID

Posted by Unknown Jumat, 01 Maret 2013 0 komentar

java.class


public class Expandablelistview extends ExpandableListActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.expandablelistview);   
        SimpleExpandableListAdapter expListAdapter =
                           new SimpleExpandableListAdapter(
                    this,
                    createGroupList(),           
                    R.layout.group_row,            
                    new String[] { "Item" },
                    new int[] { R.id.row_name },
                    createChildList(),             
                    R.layout.child_row,          
                    new String[] {"Sub Item"},   
                    new int[] { R.id.grp_child});
            setListAdapter( expListAdapter );
    }

    // hash map for row 

    private List createGroupList() {
      ArrayList result = new ArrayList();
      for (int i = 0; i < 15; ++i) { // 15 groups........
      HashMap m = new HashMap();
      m.put("Item", "Item " + i); // the key and it's value.
      result.add(m);
  }
  return (List) result;
 }

    /* creatin the HashMap for the children */

    private List createChildList() {
        ArrayList result = new ArrayList();
        for (int i = 0; i < 15; ++i) {
            ArrayList secList = new ArrayList();
            for (int n = 0; n < 3; n++)
            {
                HashMap child = new HashMap();
                child.put("Sub Item", "Sub Item " + n);
                secList.add(child);
            }
            result.add(secList);
        }
        return result;
    }


    public void onGroupExpand(int groupPosition) {
        try
        {
            System.out.println("Group exapanding
                   Listener => groupPosition = "
                          + groupPosition);
        } catch (Exception e) {
            System.out.println(" groupPosition Errrr +++ "
                  + e.getMessage());
        }  } }

expandablelistview.xml:


<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    > 
 <ExpandableListView android:id="@+id/android:list"
               android:layout_width="fill_parent"
               android:layout_height="fill_parent"
               android:background="@drawable/bkg"/> 

     <TextView android:id="@+id/android:empty"
               android:layout_width="fill_parent"
               android:layout_height="fill_parent"
               android:text="No items"/> 
</LinearLayout>

child_row.xml:

 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"> 
    < TextView android:id="@+id/grp_child"
         android:paddingLeft="50px"
         android:focusable="false"
         android:textSize="14px"
         android:textStyle="normal"
         android:layout_width="150px"
         android:layout_height="wrap_content"/> 
</LinearLayout>

group_row.xml


<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"> 

    <TextView android:id="@+id/row_name"
         android:paddingLeft="50px"
         android:textSize="20px"
         android:textStyle="normal"
         android:layout_width="320px"
         android:layout_height="wrap_content"/> 

</LinearLayout>

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Android – Bullets in ListView

Posted by Unknown Senin, 18 Februari 2013 0 komentar

main.xml :

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:padding="10dp"> 
    
    <ListView
        android:id="@+id/listView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:listSelector="@android:color/transparent"
        android:divider="@null"/> 
</LinearLayout>

create a bullet.xml in drawable folder:

<?xml version="1.0" encoding="utf-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval"> 
    <size
        android:height="6dp"
        android:width="6dp"/> 
    <solid android:color="#FF00F0"/> 
</shape>

list_item.xml for creating custom listview:

<?xml version="1.0" encoding="utf-8"?> 
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/itemText"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:drawableLeft="@drawable/bullet"
    android:drawablePadding="8dp"
    android:padding="5dp"
    android:text="List Item"
    android:textSize="20sp"/>

BulletListViewActivity.java

public class BulletedListViewActivity extends Activity {
    /** Called when the activity is first created. */
    ArrayList<string> listCountry;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        prepareList();
    ListView listView = (ListView)findViewById(R.id.listView);
    listView.setAdapter(new ArrayAdapter<string>(
                       this, R.layout.list_item, listCountry));
    }
    public void prepareList()
    {
          listCountry = new ArrayList<string>();
          listCountry.add("India");
          listCountry.add("Brazil");
          listCountry.add("Canada");
          listCountry.add("China");
          listCountry.add("France");
          listCountry.add("Germany");
          listCountry.add("Iran");
          listCountry.add("Italy");
          listCountry.add("Japan");
          listCountry.add("Korea");
          listCountry.add("Mexico");
          listCountry.add("Netherlands");
          listCountry.add("Portugal");
          listCountry.add("Russia");
          listCountry.add("Saudi Arabia");
          listCountry.add("Spain");
          listCountry.add("Turkey");
          listCountry.add("United Kingdom");
          listCountry.add("United States");
    }}

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How to write interfaces in java or Android?

Posted by Unknown 0 komentar

 what is an Interface?

An interface is a collection of abstract methods. A class implements an interface, thereby inheriting the abstract methods of the interface. 

An interface is not a class. Writing an interface is similar to  writing a class, but they are two different concepts. A class describes  the attributes and behaviors of an object. An interface contains  behaviors that a class implements. 

Unless the class that implements the interface is abstract, all the methods of the interface need to be defined in the class. 

MainActivity.java

public class MainActivity extends Activity implements Interface {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    @Override
    public void testFunctionOne() {
        System.out.println("Print from testFunctionOne in the Interface");
    }
    @Override
    public void testFunctionTwo() {
        System.out.println("Print from testFunctionTwo in the Interface");
    }}

in Interface.java

public interface Interface  {    
    void testFunctionOne();
    void testFunctionTwo(); }

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Spinners in Android

Posted by Unknown Kamis, 24 Januari 2013 0 komentar

The Android Spinner Control is definitely the equivalent of the drop-down selector . By making use of spinner control you basically obtain the capability to choose from a list without taking up all of the display screen space of a ListView.

Spinners provide a quick way to select one value from a set. In the default state, a spinner shows its currently selected value. Touching the spinner displays a dropdown menu with all other available values, from which the user can select a new one.

You can add a spinner to your layout with the Spinner object. You should usually do so in your xml layout with a <spinner> element.
For example:

 <Spinner
    
        android:id="@+id/myspinner"    
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

Also See....Custom Spinners In Android

Here we go with java source code:
in java file:

 
public class simplespinnersactivity extends Activity implements OnItemSelectedListener {
       TextView selection;
       String[] items = { "this", "is", "a","really","a" "simple","list", "in", "android", "ok" };   

  @Override
      public void onCreate(Bundle savedInstanceState)
         {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.main);
           selection = (TextView) findViewById(R.id.selection);
           Spinner spin = (Spinner) findViewById(R.id.spinner);
           spin.setOnItemSelectedListener(this);
           ArrayAdapter aa = new ArrayAdapter(this,android.R.layout.simple_spinner_item,items);  
           aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
           spin.setAdapter(aa);
          }
    public void onItemSelected(AdapterView parent, View v,int  position,long id)
    {
        selection.setText(items[position]);
    }
    public void onNothingSelected(AdapterView parent)
    {
         selection.setText("");
    }
    }

in xml file:

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    > 
<TextView 
    android:id="@+id/selection"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"/> 

<Spinner
android:id="@+id/spinner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:drawSelectorOnTop = "true"> 

</Spinner> 
  </LinearLayout>

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Blinking TextView - Two Methods

Posted by Unknown Rabu, 23 Januari 2013 0 komentar

METHOD 1


private void blink(){
            final Handler handler = new Handler();
            new Thread(new Runnable() {
                public void run() {
                int timeToBlink = 600;    //in milissegunds
                try
                {
                    Thread.sleep(timeToBlink);
                }catch (Exception e)
                {
                   
                }handler.post(new Runnable()
                  {
                   public void run()
                    {
                    TextView txt = (TextView)findViewById(R.id.usage);
                    if(txt.getVisibility() == View.VISIBLE)
                     {
                    txt.setVisibility(View.INVISIBLE);
                     }else
                     {
                     txt.setVisibility(View.VISIBLE);
                     }
                      blink();
                    }
                    });
                    }
                }).start();
            }

METHOD 2


   TextView myText = (TextView) findViewById(R.id.usage );
   Animation anim = new AlphaAnimation(0.0f, 1.0f);
   anim.setDuration(50);
   //You can manage the time of the blink with this parameter
   anim.setStartOffset(20);
   anim.setRepeatMode(Animation.REVERSE);
   anim.setRepeatCount(Animation.INFINITE);
   myText.startAnimation(anim);

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Customize The Title Bar in Android

Posted by Unknown 0 komentar

xml for custom title bar:


< ?xml version="1.0" encoding="utf-8"?> 
< LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/titlebar> 
    < TextView
        style="@style/MyRedTextAppearance"
        android:padding="7dp"
        android:id="@+id/txtvew_title"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:textColor="#FFFFFF"
        android:textSize="20dp"
        android:textStyle="bold"
        android:gravity="center"/> 
< /LinearLayout>

main.xml:
Include the above xml to the main xml as given below...


< RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/redbg" > 
           < include
             android:id="@+id/head"
             layout="@layout/titlebaar" /> 
 < LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_below="@+id/head"
        android:padding="5dp" > 
              --- ---- --- ---- --- --- -- --
              --- --- ---- --- --- --- --- --
  < /LinearLayout> 
< /RelativeLayout>

in java class:


@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.show_image);
       
        TextView t1 = (TextView) findViewById(R.id.txtvew_title);
        t1.setText("Custom Title Bar");
        t1.setTextColor(Color.RED);
}

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