Android GPS

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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