android Bitmap Drawable bitByte[] 互相转换
16lz
2021-01-23
转换Bitmap to Drawable
BitmapDrawable bitmapDrawable = (BitmapDrawable)bitmap;
Drawable drawable = (Drawable)bitmapDrawable;
Bitmap bitmap = new Bitmap (...);
Drawable drawable = new BitmapDrawable(bitmap);
转换Drawable to Bitmap
Drawable d = ImagesList.get(0);
Bitmap bitmap = ((BitmapDrawable)d).getBitmap();
转换Bitmap to byte[]
private byte[] Bitmap2Bytes(Bitmap bm){
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.PNG, 100, baos);
return baos.toByteArray();
}
转换byte[] to Bitmap
private Bitmap Bytes2Bimap(byte[] b){
if(b.length!=0){
return BitmapFactory.decodeByteArray(b, 0, b.length);
}else {
return null;
}
}
BitmapDrawable bitmapDrawable = (BitmapDrawable)bitmap;
Drawable drawable = (Drawable)bitmapDrawable;
Bitmap bitmap = new Bitmap (...);
Drawable drawable = new BitmapDrawable(bitmap);
转换Drawable to Bitmap
Drawable d = ImagesList.get(0);
Bitmap bitmap = ((BitmapDrawable)d).getBitmap();
转换Bitmap to byte[]
private byte[] Bitmap2Bytes(Bitmap bm){
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.PNG, 100, baos);
return baos.toByteArray();
}
转换byte[] to Bitmap
private Bitmap Bytes2Bimap(byte[] b){
if(b.length!=0){
return BitmapFactory.decodeByteArray(b, 0, b.length);
}else {
return null;
}
}
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