Display Animated Gif Android

Step1)put a Gif image in drawable folder 

Step2)Make GifViewActivity and GifViewClass as follows

public class GifViewActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(new GifViewClass(this));
    }

    private class GifViewClass extends View {
        Movie movie;

        GifViewClass(Context context) {
            super(context);

            //Gif image from drawable folder
            movie = Movie.decodeStream(
                    context.getResources().openRawResource(
                            R.drawable.gif_image));
        }
        @Override
        protected void onDraw(Canvas canvas) {   
            if (movie != null) {
                movie.setTime(
                    (int) SystemClock.uptimeMillis() % movie.duration());
                movie.draw(canvas, 0, 0);
                invalidate();
            }
        }
    }
}

Android animation using xml

Step to perform animation in android apps

Step 1) Create XML which define animation
create a xml file which define the animation in  res ⇒ anim ⇒ animation.xml , If you dont have anim folder then create it in res directory

blink.xml

<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android">     <alpha android:fromAlpha="0.0"         android:toAlpha="1.0"         android:interpolator="@android:anim/accelerate_interpolator"         android:duration="800"         android:repeatMode="reverse"         android:repeatCount="infinite"/> </set>     Step 2) Load the animation and set to view in acitvity to see blink effect public class BlinkActivity extends Activity{       TextView textMessage;       // Animation     Animation animBlink;       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_blink);           textMessage = (TextView) findViewById(R.id.textMessage);                textMessag.setText(Welcome to Android Code Portal);         // load the animation         animBlink = AnimationUtils.loadAnimation(getApplicationContext(),                 R.anim.blink);          // start the animation        textMessage.startAnimation(animBlink);           } }   Some other useful animations as follows    1)Blink blink.xml <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android">     <alpha android:fromAlpha="0.0"         android:toAlpha="1.0"         android:interpolator="@android:anim/accelerate_interpolator"         android:duration="800"         android:repeatMode="reverse"         android:repeatCount="infinite"/> </set>   2)ZoomIn zoomin.xml <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"     android:fillAfter="true" >       <scale         xmlns:android="http://schemas.android.com/apk/res/android"         android:duration="1000"         android:fromXScale="1"         android:fromYScale="1"         android:pivotX="50%"         android:pivotY="50%"         android:toXScale="3"         android:toYScale="3" >     </scale>   </set>    3)ZoomOut zoomout.xml <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"     android:fillAfter="true" >       <scale         xmlns:android="http://schemas.android.com/apk/res/android"         android:duration="1000"         android:fromXScale="1.0"         android:fromYScale="1.0"         android:pivotX="50%"         android:pivotY="50%"         android:toXScale="0.5"         android:toYScale="0.5" >     </scale>   </set>   4)FadeIn fadein.xml <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"     android:fillAfter="true" >       <alpha         android:duration="1000"         android:fromAlpha="0.0"         android:interpolator="@android:anim/accelerate_interpolator"         android:toAlpha="1.0" />   </set>    5)FadeOut fadeout.xml <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"     android:fillAfter="true" >       <alpha         android:duration="1000"         android:fromAlpha="1.0"         android:interpolator="@android:anim/accelerate_interpolator"         android:toAlpha="0.0" />   </set>   6)Rotate rotate.xml <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android">     <rotate android:fromDegrees="0"         android:toDegrees="360"         android:pivotX="50%"         android:pivotY="50%"         android:duration="700"         android:repeatMode="restart"         android:repeatCount="infinite"         android:interpolator="@android:anim/cycle_interpolator"/>   </set>   7)Move  move.xml <?xml version="1.0" encoding="utf-8"?> <set     xmlns:android="http://schemas.android.com/apk/res/android"     android:interpolator="@android:anim/linear_interpolator"     android:fillAfter="true">      <translate         android:fromXDelta="0%p"         android:toXDelta="80%p"         android:duration="1000" /> </set>   8)SlideDown slidedown.xml <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"     android:fillAfter="true">       <scale         android:duration="800"         android:fromXScale="1.0"         android:fromYScale="0.0"         android:interpolator="@android:anim/linear_interpolator"         android:toXScale="1.0"         android:toYScale="1.0" />   </set>    9)SlideUp slideup.xml <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"     android:fillAfter="true" >       <scale         android:duration="800"         android:fromXScale="1.0"         android:fromYScale="1.0"         android:interpolator="@android:anim/linear_interpolator"         android:toXScale="1.0"         android:toYScale="0.0" />   </set>   10)Bounce  bounce.xml <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"     android:fillAfter="true"     android:interpolator="@android:anim/bounce_interpolator">       <scale         android:duration="800"         android:fromXScale="1.0"         android:fromYScale="0.0"         android:toXScale="1.0"         android:toYScale="1.0" />   </set>

Save Activity State in Android

Save activity state in android apps (for example when we rotate our device portrait to landscape or landscape to portrait the values which we had filled in EditText gone away)

You need to override onSaveInstanceState(Bundle savedInstanceState) and write the application state values you want to change to the Bundle parameter like this

@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
  super.onSaveInstanceState(savedInstanceState);
  // Save UI state changes to the savedInstanceState.
  // This bundle will be passed to onCreate if the process is
  // killed and restarted.
  savedInstanceState.putBoolean("BooleanValueKey", true);
  savedInstanceState.putDouble("DoubleValueKey", 1.9);
  savedInstanceState.putInt("IntValueKey", 1);
  savedInstanceState.putString("StringValueKey", "Welcome to Android Code Portal");
  // etc.
}

The Bundle is essentially a way of storing a NVP ("Name-Value Pair") map, and it will 

get passed in to onCreate() and also onRestoreInstanceState() where you'd extract 

the values like this: 

@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
  super.onRestoreInstanceState(savedInstanceState);
  // Restore UI state from the savedInstanceState.
  // This bundle has also been passed to onCreate.
  boolean booleanValue = savedInstanceState.getBoolean("BooleanValueKey");
  double doubleValue = savedInstanceState.getDouble("DoubleValueKey");
  int intValue = savedInstanceState.getInt("IntValueKey");
  String stringValue = savedInstanceState.getString("StringValueKey");
}