ANDROID_MARS学习笔记_S02_009_Animation_Interpolator

 1 public class MainActivity extends Activity {
 2     private Button button = null;
 3     private ImageView imageView = null;
 4 
 5     @Override
 6     public void onCreate(Bundle savedInstanceState) {
 7         super.onCreate(savedInstanceState);
 8         setContentView(R.layout.main);
 9         imageView = (ImageView) findViewById(R.id.imageViewId);
10         button = (Button) findViewById(R.id.scaleButtonId);
11         button.setOnClickListener(new AnimationButtonListener());
12     }
13 
14     private class AnimationButtonListener implements OnClickListener {
15 
16         @Override
17         public void onClick(View v) {
18             /**
19              * Animation animation =
20              * AnimationUtils.loadAnimation(MainActivity.this, R.anim.alpha);
21              * imageView.startAnimation(animation);
22              */
23             // 声明一个AnimationSet对象
24             AnimationSet animationSet = new AnimationSet(false);
25             AlphaAnimation alpha = new AlphaAnimation(1.0f, 0.0f);
26             alpha.setInterpolator(new DecelerateInterpolator());
27             RotateAnimation rotate = new RotateAnimation(0, 360,
28                     Animation.RELATIVE_TO_SELF, 0.5f,
29                     Animation.RELATIVE_TO_SELF, 0.5f);
30             rotate.setInterpolator(new AccelerateInterpolator());
31             animationSet.addAnimation(alpha);
32             animationSet.addAnimation(rotate);
33             animationSet.setDuration(2000);
34             animationSet.setStartOffset(500);
35             imageView.startAnimation(animationSet);
36         }
37 
38     }
39 }