android 特效之一 电视机关闭特效
16lz
2021-01-24
废话不说，上代码：
1、要关闭的Activity代码：
public class TVOffDemo extends Activity {/** Called when the activity is first created. */public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);Button b = (Button) findViewById(R.id.Button01);b.setOnClickListener(new OnClickListener() {public void onClick(View v) {View img = findViewById(R.id.layout);img.startAnimation(new TVOffAnimation());}});}}
2、动画实现类TVOffAnimation public class TVOffAnimation extends Animation {private int halfWidth;private int halfHeight;public void initialize(int width, int height, int parentWidth, int parentHeight) {super.initialize(width, height, parentWidth, parentHeight);setDuration(500);setFillAfter(true);// 保存View的中心点halfWidth = width / 2;halfHeight = height / 2;setInterpolator(new AccelerateDecelerateInterpolator());}protected void applyTransformation(float interpolatedTime, Transformation t) {final Matrix matrix = t.getMatrix();if (interpolatedTime < 0.8) {matrix.preScale(1 + 0.625f * interpolatedTime, 1 - interpolatedTime / 0.8f + 0.01f,halfWidth, halfHeight);} else {matrix.preScale(7.5f * (1 - interpolatedTime), 0.01f, halfWidth, halfHeight);}}} 下面上源码：
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