xml动画

anim中的四个xml文件：

1.alpha.xml:

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <alpha
        android:duration="3000"
        android:fromAlpha="0.1"
        android:toAlpha="1.0" />


</set>

2.scale.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale
        android:fromXScale="0.0"
        android:toXScale="1.0"
        android:fromYScale="0.0"
        android:toYScale="1.0"
        android:pivotX="50%"
        android:pivotY="50%"
        android:fillAfter="false"
        android:duration="2000"/>

</set>

3.translate.xml:

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:fromXDelta="30"
        android:toXDelta="100"
        android:fromYDelta="30"
        android:toYDelta="100"
        android:duration="2000"/>

</translate>

4.rotate.xml:

<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android">
    <rotate
        android:fromDegrees="0"
        android:toDegrees="+720"
        android:pivotX="50%"
        android:pivotY="50%"
        android:duration="2000"/>

</rotate>

layout中的xml文件activity_main.xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:text="你是一坨屎!!" />

    <ImageView
        android:id="@+id/img"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/textView1"
        android:layout_centerHorizontal="true"
        android:src="@drawable/aa20140903173350" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="131dp"
        android:text="渐变" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/button1"
        android:layout_alignBottom="@+id/button1"
        android:layout_toRightOf="@+id/button1"
        android:text="收缩" />

    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/button2"
        android:layout_alignBottom="@+id/button2"
        android:layout_toRightOf="@+id/button2"
        android:text="移动" />

    <Button
        android:id="@+id/button4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/button3"
        android:layout_alignBottom="@+id/button3"
        android:layout_toRightOf="@+id/button3"
        android:text="旋转" />

</RelativeLayout>

src中的.java文件MainActivity.java:

package com.anim.anim;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends Activity {
    private TextView txt;
    private ImageView img;
    Animation animation;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        img=(ImageView) findViewById(R.id.img);
        txt=(TextView) findViewById(R.id.textView1);
        findViewById(R.id.button1).setOnClickListener(new OnClickListener() {            
            @Override
            public void onClick(View arg0) {
                animation=AnimationUtils.loadAnimation(MainActivity.this,R.anim.alpha);
                img.startAnimation(animation);
                
            }
        });
        findViewById(R.id.button2).setOnClickListener(new OnClickListener() {            
            @Override
            public void onClick(View arg0) {
                animation=AnimationUtils.loadAnimation(MainActivity.this,R.anim.scale);
                img.startAnimation(animation);
                
            }
        });
        findViewById(R.id.button3).setOnClickListener(new OnClickListener() {            
            @Override
            public void onClick(View arg0) {
                animation=AnimationUtils.loadAnimation(MainActivity.this,R.anim.translate);
                img.startAnimation(animation);
                
            }
        });
        findViewById(R.id.button4).setOnClickListener(new OnClickListener() {            
            @Override
            public void onClick(View arg0) {
                animation=AnimationUtils.loadAnimation(MainActivity.this,R.anim.rotate);
                img.startAnimation(animation);
                
            }
        });
    }
}