simple animation

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout" android:orientation="vertical" android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TextView android:id="@+id/rotatetext" android:layout_width="fill_parent"
        android:layout_height="wrap_content" android:text="Will be rotated." />
    <Button android:id="@+id/Button01" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:text="Rotate"
        android:onClick="startAnimation"></Button>
    <TextView android:id="@+id/scrolltext" android:layout_width="fill_parent"
        android:layout_height="wrap_content" android:lines="1"
        android:text="Will be scrolled to the left."
        android:scrollHorizontally="true" />
    <Button android:id="@+id/Button02" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:text="Animate to left + bounce"
        android:onClick="startAnimation"></Button>
    <TextView android:id="@+id/fadeout" android:layout_width="fill_parent"
        android:layout_height="wrap_content" android:lines="1"
        android:text="Will be faded out / in" android:scrollHorizontally="true" />
    <Button android:id="@+id/Button03" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:text="Fade"
        android:onClick="startAnimation"></Button>
    <Button android:id="@+id/Button04" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:text="Add / Remove component"
        android:onClick="startAnimation"></Button>
</LinearLayout>

the following file is in res.drawable/anim.xml
anim.xml


<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="true">
    <rotate android:fromDegrees="0" android:toDegrees="360"
        android:duration="5000" android:pivotX="50%" android:pivotY="90%"
        android:startOffset="0">
    </rotate>
</set>










SampleAnimationActivity.Java


package com.animation;

import android.app.Activity;
import android.graphics.Paint;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.view.animation.BounceInterpolator;
import android.view.animation.LayoutAnimationController;
import android.view.animation.TranslateAnimation;
import android.widget.TextView;
import android.widget.Toast;

public class SampleAnimation extends Activity implements AnimationListener {
    private TextView animatedView3;

   
/** Called when the activity is first created. */

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

    }

    public void startAnimation(View view) {
        switch (view.getId()) {
        case R.id.Button01:
            // Show how to load an animation from XML
            Animation animation1 = AnimationUtils.loadAnimation(this,
                    R.anim.anim);
            animation1.setAnimationListener(this);
            View animatedView1 = findViewById(R.id.rotatetext);
            animatedView1.startAnimation(animation1);
            break;

        case R.id.Button02:
            // Shows how to define a animation via code
            // Also use an Interpolator (BounceInterpolator)
            Paint paint = new Paint();
            TextView animatedView2 = (TextView) findViewById(R.id.scrolltext);
            float measureTextCenter = paint.measureText(animatedView2.getText()
                    .toString());
            Animation animation2 = new TranslateAnimation(0f,
                    -measureTextCenter, 0.0f, 0.0f);
            animation2.setDuration(5000);
            animation2.setInterpolator(new BounceInterpolator());
            animatedView2.startAnimation(animation2);
            break;

        case R.id.Button03:
            // Demonstrate fading and adding an AnimationListener
            animatedView3 = (TextView) findViewById(R.id.fadeout);
            float from = 1.0f;
            float to = 1.0f;

            if (animatedView3.getVisibility() == View.INVISIBLE) {
                from = to;
                to = 1.0f;
            }

            Animation animation3 = new AlphaAnimation(from, to);
            animation3.setDuration(5000);
            animation3.setAnimationListener(this);
            animatedView3.startAnimation(animation3);

            break;

        case R.id.Button04:
            // Demonstrate LayoutAnimation
            ViewGroup layout = (ViewGroup) findViewById(R.id.layout);
            Animation animation4 = new AlphaAnimation(0.0f, 1.0f);
            animation4.setDuration(5000);
            LayoutAnimationController controller = new LayoutAnimationController(
                    animation4, 0);
            layout.setLayoutAnimation(controller);

            View button = findViewById(R.id.Button03);
            if (button == null) {
                layout.addView(button);
            } else {
                layout.removeView(button);
            }
            break;

        default:
            break;
        }

    }

    public void onAnimationStart(Animation animation) {
        Toast.makeText(this, "Animation started", Toast.LENGTH_SHORT).show();
    }

   
    public void onAnimationEnd(Animation animation) {
        Toast.makeText(this, "Animation ended", Toast.LENGTH_SHORT).show();
        if (animatedView3.getVisibility() == View.VISIBLE) {
            animatedView3.setVisibility(View.INVISIBLE);
        } else {
            animatedView3.setVisibility(View.VISIBLE);
        }
    }

   
    public void onAnimationRepeat(Animation animation) {
        Toast.makeText(this, "Animation rep", Toast.LENGTH_SHORT).show();

    }
}