Android 如何创建服务检测新联系人添加

我找到了很多代码来检测noveaux add联系人

比如说

public class ContactsObserver extends ContentObserver {
private final static String TAG = ContactsObserver.class.getSimpleName();

private Context ctx;
private List<ContactsChangeListener> listeners = new ArrayList<ContactsChangeListener>();

private ContactsObserver(Context ctx) {
    super(new Handler());
    this.ctx = ctx.getApplicationContext();
    ctx.getContentResolver()
        .registerContentObserver(
                ContactsContract.Contacts.CONTENT_URI,  // uri
                false,                                  // notifyForDescendents
                this);                                  // observer
}

@Override
public void onChange(boolean selfChange) {
    Log.i(TAG, "Contacs change");
    for(ContactsChangeListener l : listeners){
        l.onContactsChange();
    }
}

@Override
public boolean deliverSelfNotifications() {
    return false; // set to true does not change anything...
}

public static ContactsObserver register(Context ctx){
    Log.d(TAG, "register");
    return new ContactsObserver(ctx);
}

public void unregister(){
    Log.d(TAG, "unregister");
    ctx.getContentResolver().unregisterContentObserver(this);
}

public void addContactsChangeListener(ContactsChangeListener l){
    listeners.add(l);
}

public interface ContactsChangeListener{
    void onContactsChange();
}
}

---

将服务方法“OnStart”放入服务中，使用以下方法注册：

getApplication().getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true,new MyCOntentObserver());

getApplication().getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true,new MyCOntentObserver());