Android中启动动画源码讲解

首先是主要代码的实现，去调用各个xml 配置文件：

MainActivity:

public class MainActivity extends Activity {

	private ImageView imageView;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		//获取显示控件ID		
		imageView = (ImageView) findViewById(R.id.imageView1);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
	

	public void animImpl(View v){
	
		//调用 动画的配置文件	
		Animation animation = AnimationUtils.loadAnimation(this, R.anim.alpha_demo);
		imageView.startAnimation(animation);
	}
	
	//旋转动画
	public void rotate(){
		Animation animation = AnimationUtils.loadAnimation(this, R.anim.rotate_demo);
		imageView.startAnimation(animation);
	}
	
	//缩放动画
	public void scaleImpl(){
		Animation animation = AnimationUtils.loadAnimation(this, R.anim.scale_demo);
		imageView.startAnimation(animation);
	}
	
	
	//移动效果
	public void translateImpl(){
		//XML文件
	/*	Animation animation = AnimationUtils.loadAnimation(this, R.anim.translate_demo);
	
		animation.setRepeatCount(Animation.INFINITE);*/
	
	  /* 第一种 
	   * imageView.setAnimation(animation);
	    animation.start();*/
		//第二种
//		imageView.startAnimation(animation);
		
		//Java代码
		TranslateAnimation translateAnimation = new TranslateAnimation(0, 200, 0, 0);
		translateAnimation.setDuration(2000);
		imageView.startAnimation(translateAnimation);
	}
	//缩放效果
}

<alpha xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:fromAlpha="1.0"
    android:toAlpha="0.1"
    android:duration="2000"/>

 <!-- 
 fromAlpha :起始透明度
 toAlpha:结束透明度
 
 1.0表示完全不透明
 0.0表示完全透明
  -->

补充：移动开发 , Android ,