ContentResolver与ContenObserver示例[当通话记录改变时删除]

Uri  uri=Uri.parse("content://call_log/calls");
//根据号码删除通话记录
getContentResolver().registerContentObserver(uri, true, new ContentObserver(new Handler()) {
//监视的数据库发生了改变,就会触发的方法
@Override
public void onChange(boolean selfChange) {
deleterLog(incomingNumber);
super.onChange(selfChange);
}
});

//根据号码删除通话记录
private void deleterLog(String incomingNumber) {
ContentResolver resolver = getContentResolver();
Uri  uri=Uri.parse("content://call_log/calls");
resolver.delete(uri, "number=?", new String[]{incomingNumber});
}