Android 获得View截屏最优方案

Android 获得View截屏最优方案

/*** 获得View的截屏 Bitmap** @param view* @return*/
public static Bitmap getMagicDrawingCache(Context context,View view,boolean quick_cache) {Bitmap bitmap = (Bitmap) view.getTag(R.id.cacheBitmapKey);Boolean dirty = (Boolean) view.getTag(R.id.cacheBitmapDirtyKey);if (view.getWidth() + view.getHeight() == 0) {view.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());}int viewWidth = view.getWidth();int viewHeight = view.getHeight();if (bitmap == null || bitmap.getWidth() != viewWidth || bitmap.getHeight() != viewHeight) {if (bitmap != null && !bitmap.isRecycled()) {bitmap.recycle();}bitmap = Bitmap.createBitmap(viewWidth, viewHeight, Bitmap.Config.ARGB_8888);view.setTag(R.id.cacheBitmapKey, bitmap);dirty = true;}if (dirty == true || !quick_cache) {bitmap.eraseColor(context.getResources().getColor(android.R.color.transparent));Canvas canvas = new Canvas(bitmap);view.draw(canvas);view.setTag(R.id.cacheBitmapDirtyKey, false);}return bitmap;
}

xml资源需要添加id

	<item type="id" name="cacheBitmapKey"/><item type="id" name="cacheBitmapDirtyKey"/>