Implement tween animation of rotating
Create /res/anim/rotate_center.xml for animation of rotating around center
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/linear_interpolator"> <rotate android:fromDegrees="0" android:toDegrees="360" android:pivotX="50%" android:pivotY="50%" android:duration="2000" android:startOffset="0"/></set>
Create /res/anim/rotate_corner.xml for animation of rotating around the upper-left corner
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/linear_interpolator"> <rotate android:fromDegrees="0" android:toDegrees="360" android:pivotX="0%" android:pivotY="0%" android:duration="2000" android:startOffset="0"/></set>
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" >
<TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <Button android:id="@+id/rotatecenter" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Rotate around center"/> <Button android:id="@+id/rotatecorner" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Rotate around corner"/> <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:gravity="center">
<ImageView android:id="@+id/floatingimage" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/ic_launcher" />
</LinearLayout>
</LinearLayout>
main activity
package com.exercise.AndroidAnimTranslate;
import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.animation.Animation;import android.view.animation.AnimationUtils;import android.widget.Button;import android.widget.ImageView;
public class AndroidAnimTranslateActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main);
Button buttonRotateCenter = (Button)findViewById(R.id.rotatecenter); Button buttonRotateCorner = (Button)findViewById(R.id.rotatecorner); final ImageView floatingImage = (ImageView)findViewById(R.id.floatingimage);
final Animation animationRotateCenter = AnimationUtils.loadAnimation(this, R.anim.rotate_center); buttonRotateCenter.setOnClickListener(new Button.OnClickListener(){
@Override public void onClick(View arg0) { // TODO Auto-generated method stub floatingImage.startAnimation(animationRotateCenter); }});
final Animation animationRotateCorner = AnimationUtils.loadAnimation(this, R.anim.rotate_corner); buttonRotateCorner.setOnClickListener(new Button.OnClickListener(){
@Override public void onClick(View arg0) { // TODO Auto-generated method stub floatingImage.startAnimation(animationRotateCorner); }}); }}
Download the files.
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