[Android Animation _use extends Animation_3DFlip ][Android 讓layout有動畫_用extends Animation的方式_3D翻頁效果 ]

這篇用extends Animation 來做特效。

先將以下程式加入專案。

public class Flip3dAnimation extends Animation {
 private final float mFromDegrees;
 private final float mToDegrees;
 private final float mCenterX;
 private final float mCenterY;
 private Camera mCamera;

 public Flip3dAnimation(float fromDegrees, float toDegrees, float centerX,
   float centerY) {
  mFromDegrees = fromDegrees;
  mToDegrees = toDegrees;
  mCenterX = centerX;
  mCenterY = centerY;
 }

 @Override
 public void initialize(int width, int height, int parentWidth,
   int parentHeight) {
  super.initialize(width, height, parentWidth, parentHeight);
  mCamera = new Camera();
 }

 @Override
 protected void applyTransformation(float interpolatedTime, Transformation t) {
  final float fromDegrees = mFromDegrees;
  float degrees = fromDegrees
    + ((mToDegrees - fromDegrees) * interpolatedTime);

  final float centerX = mCenterX;
  final float centerY = mCenterY;
  final Camera camera = mCamera;

  final Matrix matrix = t.getMatrix();

  camera.save();

  camera.rotateY(degrees);

  camera.getMatrix(matrix);
  camera.restore();

  matrix.preTranslate(-centerX, -centerY);
  matrix.postTranslate(centerX, centerY);

 }

}

使用方法:

如果你是要點擊按鈕或item以後轉跳畫面，想要等動畫跑完再轉跳畫面，可以用以下方法，
600代表0.6秒後再轉跳畫面

final float centerX = view.getWidth() / 2.0f;
final float centerY = view.getHeight() / 2.0f;
final Flip3dAnimation rotation =  new Flip3dAnimation(0, 90, centerX, centerY);
rotation.setDuration(500);
rotation.setFillAfter(true);
rotation.setInterpolator(new AccelerateInterpolator());
              
view.startAnimation(rotation);
               
view.postDelayed(new Runnable() {
                   
          public void run() {                
            //do things here            
          }
},600);