将view对象转化为Bitmap
经亲自测试,确实可行
转:http://blog.csdn.net/hexingzhi/article/details/7598567
一、Bitmap转Drawable Bitmap bm=xxx; //xxx根据你的情况获取 BitmapDrawable bd=new BitmapDrawable(bm); 因为BtimapDrawable是Drawable的子类,最终直接使用bd对象即可。 二、 Drawable转Bitmap 转成Bitmap对象后,可以将Drawable对象通过Android的SK库存成一个字节输出流,最终还可以保存成为jpg和png的文件。 Drawable d=xxx; //xxx根据自己的情况获取drawable BitmapDrawable bd = (BitmapDrawable) d; Bitmap bm = bd.getBitmap(); 最终bm就是我们需要的Bitmap对象了。 // 从资源中获取Bitmap public static Bitmap getBitmapFromResources(Activity act, int resId) { Resources res = act.getResources(); return BitmapFactory.decodeResource(res, resId); } // byte[] → Bitmap public static Bitmap convertBytes2Bimap(byte[] b) { if (b.length == 0) { return null; } return BitmapFactory.decodeByteArray(b, 0, b.length); } // Bitmap → byte[] public static byte[] convertBitmap2Bytes(Bitmap bm) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.PNG, 100, baos); return baos.toByteArray(); } // 1)Drawable → Bitmap public static Bitmap convertDrawable2BitmapByCanvas(Drawable drawable) { Bitmap bitmap = Bitmap .createBitmap( drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); // canvas.setBitmap(bitmap); drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight()); drawable.draw(canvas); return bitmap; } // 2)Drawable → Bitmap public static Bitmap convertDrawable2BitmapSimple(Drawable drawable){ BitmapDrawable bd = (BitmapDrawable) drawable; return bd.getBitmap(); } // Bitmap → Drawable public static Drawable convertBitmap2Drawable(Bitmap bitmap) { BitmapDrawable bd = new BitmapDrawable(bitmap); // 因为BtimapDrawable是Drawable的子类,最终直接使用bd对象即可。 return bd; }
view.clearFocus();
view.setPressed(false);
boolean willNotCache = view.willNotCacheDrawing();
view.setWillNotCacheDrawing(false);
int color = view.getDrawingCacheBackgroundColor();
view.setDrawingCacheBackgroundColor(0);
if (color != 0) {
view.destroyDrawingCache();
}
view.buildDrawingCache();
Bitmap cacheBitmap = view.getDrawingCache();
if (cacheBitmap == null) {
return null;
}
Bitmap bitmap = Bitmap.createBitmap(cacheBitmap);
view.destroyDrawingCache();
view.setWillNotCacheDrawing(willNotCache);
view.setDrawingCacheBackgroundColor(color);
return bitmap;
}