Tween animation in Android

Using Tween animation

After frambyframe animation lets focus on tween animation, it is much simpler to program essentially we give start and end values to android and it gonna interpolate the values between them itself.
First of all i make a blank project called Tween.
Change the layout to relative but mine is relative layout by default.
Now i drag a button in the layout.

Dragging button in my layout

Now i am gonna create a new XML called animation.xml similar in framebyframe animation.I write this below codes in this XML file:


<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/accelerate_interpolator">// this is use for making slow starting of animation in start and speed up the speed of animation later
    <scale
        android:fromXScale="0.5"
        android:toXScale="2.0"
        android:fromYScale="0.5"
        android:toYScale="2.0"
        android:pivotX="50%"
        android:pivotY="50%"
        android:duration="2000"
        />
    <rotate 
        android:fromDegrees="0"
        android:toDegrees="180"
        android:pivotX="50%"
        android:pivotY="50%"
        android:duration="1000"
        android:startOffset="1000"
        />
    </set>

Codes for Tween animation

Then i goto main java file where i need to initliaze the animation to the button.

For this i write the following code under the Oncreate function.

final Button b1= (Button) findViewById(R.id.button1);
b1.setOnClickListener(new View.OnClickListener() {

public void onClick(View arg0) {
// TODO Auto-generated method stub
Animation anime = AnimationUtils.loadAnimation(MainActivity.this, R.anim.animation);
b1.startAnimation(anime);

}
});

For animation running in real device is good because AVD is slow and we cant test our animation better in AVD.

Anyway my project looks like this :