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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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Falling Animation in ANDROID using Animation of Translate

Posted by Unknown Sabtu, 20 April 2013 0 komentar

Falling animation is used to bring transition to a view between two X points or two Y points. In Android, you can apply this scaling effect to almost anything, from simple text, to images, buttons, etc…

in res/anim/falling.xml
suppose if transition to be done between two different X indexes use..

 
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
  android:interpolator="@android:anim/linear_interpolator">
  <translate
      android:fromXDelta="-100%p"
      android:toXDelta="0"
      android:duration="2000"/>
</set>

suppose if transition to be done between two different Y indexes use..

 
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
  android:interpolator="@android:anim/linear_interpolator">
  <translate
      android:fromYDelta="-100%p"
      android:toYDelta="0"
      android:duration="2000"/>
</set>

The java source code is given below

 
public class Textviewanimation extends Activity {
 TextView tv;
 Button startanimation;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_textviewanimation);
        
        tv=(TextView) findViewById(R.id.textview);
        startanimation=(Button) findViewById(R.id.button1);
        tv.setText("Android is a Linux-based operating system designed primarily for touchscreen mobile devices such as smartphones and tablet computers.");
  
  final Animation falling = AnimationUtils.loadAnimation(this,R.anim.falling);  
  startanimation.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View arg0) {
    tv.startAnimation(falling);    
   }
  });    }
     }

see more :

Scaling Animation in ANDROID

Alpha animation in ANDROID

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Scaling Animation In ANDROID

Posted by Unknown Jumat, 19 April 2013 0 komentar

Scaling animation is used to scale a view. In Android, you can apply this scaling effect to almost anything, from simple text, to images, buttons, etc…

Here simply I will explain a scaling textview which you can apply to other views also... In res/anim/scale.xml

 
<?xml version="1.0" encoding="utf-8"?>
  <set xmlns:android="http://schemas.android.com/apk/res/android"
  android:interpolator="@android:anim/linear_interpolator">
  <scale
    android:fromXScale="0.0"
    android:toXScale="1.0"
    android:fromYScale="0.0"
    android:toYScale="1.0"
    android:pivotX="50%"
    android:pivotY="50%"
    android:duration="2000" />
 </set>

Java source code is given below

 
public class Textviewanimation extends Activity {
 Animation fadeIn,fadeOut;
 TextView tv;
 Button startanimation;
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_textviewanimation);
        
        tv=(TextView) findViewById(R.id.textview);
        startanimation=(Button) findViewById(R.id.button1);
        tv.setText("This is an animated textview");
  
  final Animation Scale = AnimationUtils.loadAnimation(this,R.anim.scale);  
  startanimation.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View arg0) {
    tv.startAnimation(Scale);    
   }
  });    }
     }

see more:

Alpha animation ...

Falling animation ...

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TextView Animation or Alpha animation (FadeIn , FadeOut) in ANDROID

Posted by Unknown 0 komentar

An Alpha Animation is animation that controls the alpha level of an object, i.e. fading it in and out. In Android, you can apply that fading effect to almost anything, from simple text, to images, buttons, check boxes, etc…

This can be done both from xml and from java class.

Here I will explain a simple way to give a FadeIn and FadeOut for a textview on button click..

 

public class Textviewanimation extends Activity {
 
 Animation fadeIn,fadeOut;
 TextView tv;
 Button startanimation;
 Boolean fadeflag=true;
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_textviewanimation);
        
        tv=(TextView) findViewById(R.id.textview);
        startanimation=(Button) findViewById(R.id.button1);
        
        fadeIn = new AlphaAnimation(0.0f , 1.0f ) ; 
  fadeIn.setDuration(1200);
  fadeIn.setFillAfter(true);
  
  fadeOut = new AlphaAnimation(1.0f , 0.0f);
  fadeOut.setDuration(1200);
  fadeOut.setFillAfter(true);
  
  startanimation.setText("Start fadeIn");
  startanimation.setOnClickListener(new OnClickListener() {
   
   @Override
   public void onClick(View arg0) {
    
    if(fadeflag)
    {
     startanimation.setText("Start fadeOut");
     tv.setText("This is an animated textview");
     tv.startAnimation(fadeIn);
     fadeflag=false;
    }
    else
    {
     startanimation.setText("Start fadeIn");
     tv.setText("This is an animated textview");
     tv.startAnimation(fadeOut);
     fadeflag=true;
    } } });
               }   
           }

This same can be done with xml by creating an xml in res/anim/fadein

and res/anim/fadeout

Then in java

 
Animation animationFadeIn = AnimationUtils.loadAnimation(this,R.anim.fadein);
tv.startAnimation(animationFadeIn);

same way call the other

Scaling animation..

Falling animation ..

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Simple AutoComplete TextView in ANDROID

Posted by Unknown Jumat, 22 Maret 2013 0 komentar


public class Autocomplete extends Activity  {
 String name[]={
     "John", "Angel", "Mark", "Angelina",
     "Jhony", "Juli", "Augustine", "Robert",
     "Reena", "Ancilina", "Mary", "Juliet"
   };
 AutoCompleteTextView autotextview;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.activity_autocomplete);
  
  autotextview=(AutoCompleteTextView) findViewById(R.id.myautocomplete);
  autotextview.setAdapter(new ArrayAdapter<string>(this, android.R.layout.simple_dropdown_item_1line, name));
      
 }

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TextView with link in ANDROID…….

Posted by Unknown Senin, 04 Maret 2013 0 komentar

in java class:

import android.app.Activity;
import android.os.Bundle;
import android.text.Html;
import android.text.method.LinkMovementMethod;
import android.widget.TextView;

public class TextViewLinkDemo extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      TextView tv = (TextView) findViewById(R.id.tv);
      tv.setText( Html.fromHtml("This is a textView with a link   " +" 
                                           AngelMark Blog " 
                                             + "created in the Java source code using HTML."));
      tv.setMovementMethod(LinkMovementMethod.getInstance());
    }
}

main.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:id="@+id/tv"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    /> 
</LinearLayout>

In Manifest file give internet permission

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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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Spinners in Android

Posted by Unknown Kamis, 24 Januari 2013 0 komentar

 <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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Vertical Text in Xml in Android

Posted by Unknown Selasa, 15 Januari 2013 0 komentar

A simple way is to insert a \n after each character, and make sure that the the height is set to fill_parent.


 < TextView
    android:layout_width="wrap_content"
    android:layout_height="fill_parent"
      android:text="h\ne\nl\nl\no\n w\no\nr\nl\nd" />

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android populer

Customized Spinners in Android

See more basics on Android along with interview questions

Falling Animation in ANDROID using Animation of Translate

Scaling Animation In ANDROID

TextView Animation or Alpha animation (FadeIn , FadeOut) in ANDROID

Simple AutoComplete TextView in ANDROID

TextView with link in ANDROID…….

Android – Bullets in ListView

Spinners in Android

Blinking TextView - Two Methods

Vertical Text in Xml in Android

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