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Android using Bundle for sharing variables

Posted by Unknown Jumat, 20 September 2013 0 komentar

Sharing variables between Activities is quite important point during development time of your Application. This Example suppose Activity1 from where you run up other Activity2 .
We gonna share variable myValue.

In Activity1 :

myValue="string values";
Intent intent = new Intent(MainActivity.this,NewClass.class);
Bundle bundle = new Bundle();
bundle.putString("myValue", myValue);
intent.putExtras(bundle);
startActivity(intent);

Intent intent = new Intent(MainActivity.this,NewClass.class);
intent.putExtra("myValue",AnyValue);  
startActivity(intent);

In Activity2 :

Bundle bundle = getIntent().getExtras();
String value= bundle.getString(“myValue“);

Intent intent=getIntent();
Bundle bundle=intent.getExtras();
String value= bundle.getString(“myValue“);

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Starting With Eclipse and Android SDK or Configuring Android in Eclipse.

Posted by Unknown Selasa, 14 Mei 2013 0 komentar

See more basics on Android

The Android SDK provides you the API libraries and developer tools necessary to build, test, and debug apps for Android.
Download the SDK from here....

Now you have sucessfully downloaded the ADT Bundle.
The ADT Bundle provides everything you need to start developing apps, including a version of the Eclipse IDE with built-inADT (Android Developer Tools) to streamline your Android app development.

Download provide you with a zip file.
Unpack the zip file and save it to the appropriate location.
Go to the adt-bundle-<os_platform>/eclipse/ directory and launch eclipse.
That's it! The IDE is already loaded with the Android Developer Tools plugin and the SDK is ready to go.Now develop your own application.

You may find your latest updates from Android SDK Manager.The SDK Manager shows all the SDK packages available for you to add to your Android SDK.

Go to windows->Android SDK manager

And If your eclipse fails to find the SDK you may clear this by checking in windows-> Preferences.
Take preferences and you may see a window appearing like below.

Click on Android and you can browse the path of SDK here.

I you wanted to create a new emulator or edit the already created one you can go to
windows - >Android Virtual Device Manager , and a window appear like below where new, edit ,delete options are there.

Wanted to create a new emulator click on "new" from the above window and a new window appear like below where you have to enter all the field to create an appropriate one.

same way try with delete and edit also.

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Download an Image from Url and Display it in a ImageView

Posted by Unknown Selasa, 15 Januari 2013 0 komentar


    Bitmap bmImg;
    ImageView img1;
@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.sending_card);
    img1=(ImageView) findViewById(R.id.imageView1);
    String url="http://i.123g.us/c/efeb_valen_happy/card/107397.gif";
    downloadFile(url);
  }
void downloadFile(String fileUrl){
      URL myFileUrl =null;         
        try {
                 myFileUrl= new URL(fileUrl);
              } catch (MalformedURLException e) {
                   // TODO Auto-generated catch block
              e.printStackTrace();
      }
      try {
          HttpURLConnection conn=   
                            (HttpURLConnection)myFileUrl.openConnection();
               conn.setDoInput(true);
               conn.connect();
               InputStream is = conn.getInputStream();
               bmImg = BitmapFactory.decodeStream(is);
               img1.setImageBitmap(bmImg);
           } catch (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
      }}

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Passing Images between Activities in Android

Posted by Unknown Senin, 07 Januari 2013 0 komentar

in First Activity:


    Intent intent=new Intent(FirstClass.this, SecondClass.class);
    Bundle bundle=new Bundle();
    bundle.putInt("image",R.drawable.ic_launcher);
    intent.putExtras(bundle);
    startActivity(intent);

in Second Acticity:


    Bundle bundle=this.getIntent().getExtras();
    int pic=bundle.getInt("image");
    v.setImageResource(pic);

another method:
in First Activity:


    Drawable drawable=imgv.getDrawable();
    Bitmap bitmap= ((BitmapDrawable)drawable).getBitmap();
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
    byte[] b = baos.toByteArray();
    Intent intent=new Intent(Passimage.this,myclass.class);
    intent.putExtra("picture", b);
    startActivity(intent);

in Second Acticity:


   Bundle extras = getIntent().getExtras();
   byte[] b = extras.getByteArray("picture");
   Bitmap bmp = BitmapFactory.decodeByteArray(b, 0, b.length);
   ImageView image = (ImageView) findViewById(R.id.imageView1);
   image.setImageBitmap(bmp);

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