BitmapFactory.decodeXXX()方法小结

BitmapFactory.decodeXXX()方法小结

BitmapFactory.decodeStream(is);(最多用)

InputStream is = conn.getInputStream();
Bitmap bitmap = BitmapFactory.decodeStream(is);
iv.setImageBitmap(bitmap);

//适用getFileDir(),getCacheDir(),SDcard中范围
BitmapFactory.decodeFile("mnt/sdcard/big.jpg");(次多用)

//getFileDir() ===  /data/data/<当前应用程序包名>/files
//getCacheDir() ===  /data/data/<当前应用程序包名>/cache
//Environment.getExternalStorageDirectory() === /mnt/sdcard

BitmapFactory.decodeResource(res, id);(相对少)

BitmapFactory.decodeResource(R.drawable.ic_launcher, R.id.action_settings);