bitmap drawable byte 变换

bitmap drawable byte 转换

/** 将一个图片由Drawable格式转化为 Bitmap格式 */

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public static Bitmap drawableToBitmap(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);drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight());drawable.draw(canvas);return bitmap;}

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/** 讲byte[] 转换为 bitmap格式 */

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public static  byte[] bitmap2Bytes(Bitmap bm){ByteArrayOutputStream baos = new ByteArrayOutputStream();bm.compress(Bitmap.CompressFormat.PNG, 100, baos);return baos.toByteArray();}

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/**bitmap 转换为 byte[]格式 */

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public static Bitmap bytes2Bitmap(byte[] bytes){if(bytes == null || bytes.length == 0){return null;}return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);}

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