android.widget.ImageView#getDrawingCache ( )源码实例Demo

public void thumbNailScaleAnim(ImageView view) {
	view.setDrawingCacheEnabled(true);
	 Bitmap bitmap = view.getDrawingCache();
	  ActivityOptionsCompatICS options = ActivityOptionsCompatICS.makeThumbnailScaleUpAnimation(
	    view, bitmap, 0, 0);
	  // Request the activity be started, using the custom animation options.
	  ActivityCompatICS.startActivity(MainActivity.this, intent, options.toBundle());
	  //view.setDrawingCacheEnabled(false);
}
 

/**
 * 这个方法可以用于4.x上，是将一个小块的Bitmpat进行拉伸的动画
 */
private void showThumbNailScaleAnim(ImageView view) {
    view.setDrawingCacheEnabled(true);
    Bitmap bitmap = view.getDrawingCache();
    if (mTestSwitch) {
        ActivityOptionsCompat optionsCompat
                = ActivityOptionsCompat.makeThumbnailScaleUpAnimation(
                view,
                bitmap,
                0, 0
        );
        ActivityCompat.startActivity(
                OptionsCompatDemoActivity.this,
                mIntent,
                optionsCompat.toBundle());
    } else {
        ActivityOptionsCompatICS optionsCompatICS
                = ActivityOptionsCompatICS.makeThumbnailScaleUpAnimation(
                view,
                bitmap,
                0, 0
        );
        ActivityCompatICS.startActivity(
                OptionsCompatDemoActivity.this,
                mIntent,
                optionsCompatICS.toBundle());
        // view.setDrawingCacheEnabled(false);
    }
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

@Override
public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
 ImageView imageView = getImageView();
 return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}
 

public Bitmap getVisibleRectangleBitmap() {
    ImageView imageView = getImageView();
    return imageView == null ? null : imageView.getDrawingCache();
}