安卓动画相关 学习笔记

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1.帧动画

把连续图片放入 drawable 目录 以及在该目录创建创建一个xml 文件

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

    <item
        android:drawable="@drawable/a1001"
        android:duration="200"/>
    <item
        android:drawable="@drawable/a1002"
        android:duration="200"/>
    <item
        android:drawable="@drawable/a1003"
        android:duration="200"/>
    <item
        android:drawable="@drawable/a1004"
        android:duration="200"/>
    <item
        android:drawable="@drawable/a1005"
        android:duration="200"/>
    <item
        android:drawable="@drawable/a1001"
        android:duration="200"/>
    <item
        android:drawable="@drawable/a1006"
        android:duration="200"/>
    <item
        android:drawable="@drawable/a1007"
        android:duration="200"/>
    <item
        android:drawable="@drawable/a1008"
        android:duration="200"/>

    <item
        android:drawable="@drawable/a1009"
        android:duration="200"/>
    <item
        android:drawable="@drawable/a1010"
        android:duration="200"/>        
</animation-list>

程序片段

	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		iv = (ImageView) findViewById(R.id.iv);
		iv.setBackgroundResource(R.drawable.gril_list);
		an = (AnimationDrawable) iv.getBackground();
	}
	
	public void play(View view) {
		an.start();
	}

##2. 程序创建动画

	//平移
	public void playTranslate(View view)
	{
		TranslateAnimation ta = new TranslateAnimation(
				Animation.RELATIVE_TO_PARENT, 0.0f, 
				Animation.RELATIVE_TO_PARENT, 1.0f, 
				Animation.RELATIVE_TO_PARENT, 0.0f, 
				Animation.RELATIVE_TO_PARENT, 1.0f);
		ta.setDuration(2000);
		ta.setRepeatCount(2);
		ta.setRepeatMode(Animation.REVERSE);
		lanucher.startAnimation(ta);
	}
	
	//透明度
	public void alpha(View view)
	{
		AlphaAnimation an = new AlphaAnimation(0.0f, 1.0f);
		an.setDuration(2000);
		an.setRepeatCount(2);
		an.setRepeatMode(Animation.REVERSE);
		lanucher.startAnimation(an);
	}
	
	//缩放
	public void scale(View view)
	{
		ScaleAnimation sa = new ScaleAnimation(0.2f, 2.0f, 0.2f, 2.0f, 
				Animation.RELATIVE_TO_SELF, 0.5f, 
				Animation.RELATIVE_TO_SELF, 0.5f);
		sa.setDuration(2000);
		sa.setRepeatCount(2);
		sa.setRepeatMode(Animation.REVERSE);
		lanucher.startAnimation(sa);
	}
	
	//旋转
	public void rotate(View view)
	{
		RotateAnimation ra = new RotateAnimation(0, 360, 				
				Animation.RELATIVE_TO_SELF, 0.5f, 
				Animation.RELATIVE_TO_SELF, 0.5f);
		ra.setDuration(2000);
		ra.setRepeatCount(2);
		ra.setRepeatMode(Animation.REVERSE);
		lanucher.startAnimation(ra);		
	}
	
	//动画集合
	public void set(View view)
	{
		AnimationSet set = new AnimationSet(false);
		
		RotateAnimation ra = new RotateAnimation(0, 360, 				
				Animation.RELATIVE_TO_SELF, 0.5f, 
				Animation.RELATIVE_TO_SELF, 0.5f);
		ra.setDuration(2000);
		ra.setRepeatCount(2);
		ra.setRepeatMode(Animation.REVERSE);
		
		TranslateAnimation ta = new TranslateAnimation(
				Animation.RELATIVE_TO_PARENT, 0.0f, 
				Animation.RELATIVE_TO_PARENT, 1.0f, 
				Animation.RELATIVE_TO_PARENT, 0.0f, 
				Animation.RELATIVE_TO_PARENT, 1.0f);
		ta.setDuration(2000);
		ta.setRepeatCount(2);
		ta.setRepeatMode(Animation.REVERSE);
		lanucher.startAnimation(ta);
		
		set.addAnimation(ra);
		set.addAnimation(ta);
		lanucher.startAnimation(set);
	}

##3. xml配置动画

1. 透明度

<?xml version="1.0" encoding="utf-8"?>
<alpha  xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromAlpha="1.0" 
    android:toAlpha="0.0"
    android:fillBefore="true"
    android:duration="2000"
    >
</alpha>

2. 旋转

<?xml version="1.0" encoding="utf-8"?>
<rotate 
    android:fromDegrees="0" 
    android:toDegrees="360"
    android:pivotX="50%"
    android:pivotY="50%"
    android:duration="2000"
    xmlns:android="http://schemas.android.com/apk/res/android">
</rotate>

3. 缩放

<?xml version="1.0" encoding="utf-8"?>
<scale 
    android:fromXScale="0.2" 
    android:toXScale="2.0" 
    android:fromYScale="0.2"
    android:toYScale="2.0"
    android:fillAfter="true"
    android:repeatCount="2"
    xmlns:android="http://schemas.android.com/apk/res/android">
</scale>

4. 平移

<?xml version="1.0" encoding="utf-8"?>
<translate 
    android:fromXDelta="20%"
    android:toXDelta="50%p"
    android:fromYDelta="20%"
    android:toYDelta="50%p"
    android:duration="2000"
    android:repeatCount="2"
    android:repeatMode="reverse"
    xmlns:android="http://schemas.android.com/apk/res/android">
</translate>

5. 集合

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale 
    android:fromXScale="0.2" 
    android:toXScale="2.0" 
    android:fromYScale="0.2"
    android:toYScale="2.0"
    android:fillAfter="true"
    android:repeatCount="2">
</scale>
<rotate 
    android:fromDegrees="0" 
    android:toDegrees="360"
    android:pivotX="50%"
    android:pivotY="50%"
    android:duration="2000">    
</rotate>
</set>

程序片段

	private ImageView xiv;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.xml_main);
		xiv = (ImageView) findViewById(R.id.xiv);
	}
	
	//透明度
	public void alpha(View view)
	{
		Animation am = AnimationUtils.loadAnimation(this, R.anim.alpha);
		xiv.startAnimation(am);
	}

转载于:https://my.oschina.net/u/729139/blog/480964