動畫的ImageView陶醉隱藏部分由於centerCrop

Question

這裏是我的簡單的佈局

<RelativeLayout 
     android:id="@+id/layout" 
     android:layout_width="100dp" 
     android:layout_height="100dp" 
     <ImageView 
      android:id="@+id/Image" 
      android:layout_width="fill_parent" 
      android:layout_height="fill_parent"        
      android:scaleType="centerCrop"     
      /> 
</RelativeLayout> 

我想申請在佈局/ ImageView的規模動畫（我不知道哪個？），以顯示圖像的隱藏部分由於scaleType centerCrop而被裁剪。

我曾嘗試簡單的規模動畫，但它橫跨圖像本身。

Answer 1

嘗試此自定義動畫：

class MatrixAnimation extends Animation { 
    private float[][] v = new float[3][9]; 
    private ImageView target; 

    public MatrixAnimation(ImageView target, Matrix m0, Matrix m1) { 
     this.target = target; 
     m0.getValues(v[0]); 
     m1.getValues(v[1]); 
     setDuration(2000); 
    } 

    @Override 
    protected void applyTransformation(float interpolatedTime, Transformation t) { 
     Matrix m = target.getImageMatrix(); 
     for (int i = 0; i < 9; i++) { 
      v[2][i] = v[0][i] + (v[1][i] - v[0][i]) * interpolatedTime; 
     } 
     m.setValues(v[2]); 
     target.setImageMatrix(m); 
    } 
} 

起始碼：

final ImageView iv = new ImageView(this); 
    iv.setImageResource(R.drawable.layer0); 
    iv.setScaleType(ScaleType.CENTER_CROP); 
    LayoutParams p = new LayoutParams(LayoutParams.MATCH_PARENT, 200); 
    setContentView(iv, p); 

    OnClickListener l = new OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Matrix m0 = iv.getImageMatrix(); 
      Matrix m1 = new Matrix(); 
      Drawable d = iv.getDrawable(); 
      RectF src = new RectF(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); 
      RectF dst = new RectF(0, 0, iv.getWidth(), iv.getHeight()); 
      m1.setRectToRect(src, dst, ScaleToFit.CENTER); 

      iv.setScaleType(ScaleType.MATRIX); 

      MatrixAnimation anim = new MatrixAnimation(iv, m0, m1); 
      iv.startAnimation(anim); 
     } 
    }; 
    iv.setOnClickListener(l);