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Button button = (Button)findViewById(R.id.button1);

button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {

Toast.makeText(getApplicationContext(), " 저장되었습니다.",
Toast.LENGTH_LONG).show();
try{
MediaStore.Images.Media.insertImage(getContentResolver(), bm, "title",
"descripton");
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://sdcard"+
Environment.getExternalStorageDirectory())));
}catch(Exception e){};
}
});

}

//url 통신 & 갤러리 저장
private class Back extends AsyncTask <String, Integer,Bitmap>{

@Override
protected Bitmap doInBackground(String... urls) {
// TODO Auto-generated method stub
try{
;

URL myFileUrl = new URL(urls[0]);
HttpURLConnection conn = (HttpURLConnection)myFileUrl.openConnection();
conn.setDoInput(true);
conn.connect();

InputStream is = conn.getInputStream();

bm = BitmapFactory.decodeStream(is);

FileOutputStream fos = new
FileOutputStream(Environment.getExternalStorageDirectory().toString()+"now.png");
bm.compress(Bitmap.CompressFormat.PNG, 100 , fos);
fos.flush();

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