You need to use a ContentObserver
public class MissedCallsContentObserver extends ContentObserver
{
public MissedCallsContentObserver()
{
super(null);
}
@Override
public void onChange(boolean selfChange)
{
Cursor cursor = getContentResolver().query(
Calls.CONTENT_URI,
null,
Calls.TYPE + " = ? AND " + Calls.NEW + " = ?",
new String[] { Integer.toString(Calls.MISSED_TYPE), "1" },
Calls.DATE + " DESC ");
//this is the number of missed calls
//for your case you may need to track this number
//so that you can figure out when it changes
cursor.getCount();
cursor.close();
}
}
From your app, you just need to do this:
MissedCallsContentObserver mcco = new MissedCallsContentObserver();
getApplicationContext().getContentResolver().registerContentObserver(Calls.CONTENT_URI, true, mcco);
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…