public
class
ScanSdReceiver extends BroadcastReceiver {
private
AlertDialog.Builder builder =
null
;
private
AlertDialog ad =
null
;
private
int
count1;
private
int
count2;
private
int
count;
@Override
public
void
onReceive(Context context, Intent intent) {
String action = intent.getAction();
if
(Intent.ACTION_MEDIA_SCANNER_STARTED.
equals
(action)){
Cursor c1 = context.getContentResolver()
.query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
new
String[]{MediaStore.Audio.Media.TITLE,
MediaStore.Audio.Media.DURATION,
MediaStore.Audio.Media.ARTIST,
MediaStore.Audio.Media._ID,
MediaStore.Audio.Media.DISPLAY_NAME },
null
,
null
,
null
);
count1 = c1.getCount();
System.
out
.println(
"count:"
+count);
builder =
new
AlertDialog.Builder(context);
builder.setMessage(
"正在扫描存储卡..."
);
ad = builder.create();
ad.show();
}
else
if
(Intent.ACTION_MEDIA_SCANNER_FINISHED.
equals
(action)){
Cursor c2 = context.getContentResolver()
.query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
new
String[]{MediaStore.Audio.Media.TITLE,
MediaStore.Audio.Media.DURATION,
MediaStore.Audio.Media.ARTIST,
MediaStore.Audio.Media._ID,
MediaStore.Audio.Media.DISPLAY_NAME },
null
,
null
,
null
);
count2 = c2.getCount();
count = count2-count1;
ad.cancel();
if
(count>=0){
Toast.makeText(context,
"共增加"
+
count +
"首歌曲"
, Toast.LENGTH_LONG).show();
}
else
{
Toast.makeText(context,
"共减少"
+
count +
"首歌曲"
, Toast.LENGTH_LONG).show();
}
}
}
}
