Android图片二进制与Bitmap、Drawable之间的转换
Java代码
public byte[]
getBitmapByte(Bitmap bitmap){
ByteArrayOutputStream out
= new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
try {
out.flush();
out.close();
} catch (IOException e)
{
e.printStackTrace();
}
return out.toByteArray();
}
public Bitmap getBitmapFromByte(byte[] temp){
if(temp != null){
Bitmap bitmap =
BitmapFactory.decodeByteArray(temp, 0, temp.length);
return bitmap;
}else{
return null;
}
}
public byte[] getBitmapByte(Bitmap
bitmap){
ByteArrayOutputStream out = new
ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100,
out);
try {
out.flush();
out.close();
} catch (IOException e)
{
e.printStackTrace();
}
return out.toByteArray();
}
public
Bitmap getBitmapFromByte(byte[] temp){
if(temp != null){
Bitmap bitmap =
BitmapFactory.decodeByteArray(temp, 0, temp.length);
return
bitmap;
}else{
return null;
}
}
Java代码
public
static Bitmap drawableToBitmap(Drawable drawable){
int width = drawable.getIntrinsicWidth();
int height =
drawable.getIntrinsicHeight();
Bitmap bitmap = Bitmap.createBitmap(width, height,
drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
: Bitmap.Config.RGB_565);
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0,0,width,height);
drawable.draw(canvas);
return bitmap;
}
public static Bitmap
drawableToBitmap(Drawable drawable){
int width = drawable.getIntrinsicWidth();
int height = drawable.getIntrinsicHeight();
Bitmap bitmap =
Bitmap.createBitmap(width, height,
drawable.getOpacity() != PixelFormat.OPAQUE ?
Bitmap.Config.ARGB_8888
: Bitmap.Config.RGB_565);
Canvas canvas = new
Canvas(bitmap);
drawable.setBounds(0,0,width,height);
drawable.draw(canvas);
return bitmap;
}
Java代码
Drawable drawable = new FastBitmapDrawable(bitmap);