我将尝试静态地给出具体的日期，但它不能生成通知，但我从日期选择器中选择日期然后我将正常工作。这是我的代码。
MainActivity.java
public class MainActivity extends AppCompatActivity {
// This is a handle so that we can call methods on our service
private ScheduleClient scheduleClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
scheduleClient = new ScheduleClient(this);
scheduleClient.doBindService();
}
public void onDateSelectedClickEvent(View v) {
// Get the date from our datepicker
int day = 1;
int month = 4;
int year = 2016;
// Create a new calendar set to the date chosen
// we set the time to midnight (i.e. the first minute of that day)
Calendar c = Calendar.getInstance();
c.set(year, month, day);
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
// Ask our service to set an alarm for that date, this activity talks to
// the client that talks to the service
scheduleClient.setAlarmForNotification(c);
// Notify the user what they just did
Toast.makeText(
this,
"Notification set for: " + day + "/" + (month) + "/" + year,
Toast.LENGTH_SHORT).show();
}
@Override
protected void onStop() {
// When our activity is stopped ensure we also stop the connection to the service
// this stops us leaking our activity into the system *bad*
if(scheduleClient != null)
scheduleClient.doUnbindService();
super.onStop();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
AlarmTask.java
public class AlarmTask implements Runnable {
private final Calendar date;
// The android system alarm manager
private final AlarmManager am;
// Your context to retrieve the alarm manager from
private final Context context;
public AlarmTask(Context context, Calendar date) {
this.context = context;
this.am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
this.date = date;
}
@Override
public void run() {
// Request to start are service when the alarm date is upon us
// We don't start an activity as we just want to pop up a notification into the system bar not a full activity
Intent intent = new Intent(context, NotifyService.class);
intent.putExtra(NotifyService.INTENT_NOTIFY, true);
PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);
// Sets an alarm - note this alarm will be lost if the phone is turned off and on again
am.set(AlarmManager.RTC, date.getTimeInMillis(), pendingIntent);
}
}
ScheduleService.java
public class ScheduleService extends Service {
public class ServiceBinder extends Binder {
ScheduleService getService() {
return ScheduleService.this;
}
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i("ScheduleService", "Received start id " + startId + ": " + intent);
// We want this service to continue running until it is explicitly stopped, so return sticky.
return START_STICKY;
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
// This is the object that receives interactions from clients. See
private final IBinder mBinder = new ServiceBinder();
/**
* Show an alarm for a certain date when the alarm is called it will pop up a notification
*/
public void setAlarm(Calendar c) {
// This starts a new thread to set the alarm
// You want to push off your tasks onto a new thread to free up the UI to carry on responding
new AlarmTask(this, c).run();
}
}
NotifyService.java
public class NotifyService extends Service {
public class ServiceBinder extends Binder {
NotifyService getService() {
return NotifyService.this;
}
}
// Unique id to identify the notification.
private static final int NOTIFICATION = 123;
// Name of an intent extra we can use to identify if this service was started to create a notification
public static final String INTENT_NOTIFY = "com.blundell.tut.service.INTENT_NOTIFY";
// The system notification manager
private NotificationManager mNM;
@Override
public void onCreate() {
Log.i("NotifyService", "onCreate()");
mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i("LocalService", "Received start id " + startId + ": " + intent);
// If this service was started by out AlarmTask intent then we want to show our notification
if(intent.getBooleanExtra(INTENT_NOTIFY, false))
showNotification();
// We don't care if this service is stopped as we have already delivered our notification
return START_NOT_STICKY;
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
// This is the object that receives interactions from clients
private final IBinder mBinder = new ServiceBinder();
/**
* Creates a notification and shows it in the OS drag-down status bar
*/
private void showNotification() {
// This is the 'title' of the notification
CharSequence title = "Alarm!!";
// This is the icon to use on the notification
int icon = R.drawable.ic_launcher;
// This is the scrolling text of the notification
CharSequence text = "Your notification time is upon us.";
// What time to show on the notification
long time = System.currentTimeMillis();
// Notification notification = new Notification(icon, text, time);
Notification notification;
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, SecondActivity.class), 0);
NotificationCompat.Builder builder = new NotificationCompat.Builder(
this);
notification = builder.setContentIntent(contentIntent)
.setSmallIcon(icon).setTicker(text).setWhen(time)
.setAutoCancel(true).setContentTitle(title)
.setContentText(text).build();
mNM.notify(NOTIFICATION, notification);
// The PendingIntent to launch our activity if the user selects this notification
// PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, SecondActivity.class), 0);
// Set the info for the views that show in the notification panel.
//notification.setLatestEventInfo(this, title, text, contentIntent);
// Clear the notification when it is pressed
// notification.flags |= Notification.FLAG_AUTO_CANCEL;
// Send the notification to the system.
//mNM.notify(NOTIFICATION, notification);
// Stop the service when we are finished
stopSelf();
}
}
ScheduleClient.java
public class ScheduleClient {
// The hook into our service
private ScheduleService mBoundService;
// The context to start the service in
private Context mContext;
// A flag if we are connected to the service or not
private boolean mIsBound;
public ScheduleClient(Context context) {
mContext = context;
}
/**
* Call this to connect your activity to your service
*/
public void doBindService() {
// Establish a connection with our service
mContext.bindService(new Intent(mContext, ScheduleService.class), mConnection, Context.BIND_AUTO_CREATE);
mIsBound = true;
}
/**
* When you attempt to connect to the service, this connection will be called with the result.
* If we have successfully connected we instantiate our service object so that we can call methods on it.
*/
private ServiceConnection mConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder service) {
// This is called when the connection with our service has been established,
// giving us the service object we can use to interact with our service.
mBoundService = ((ScheduleService.ServiceBinder) service).getService();
}
public void onServiceDisconnected(ComponentName className) {
mBoundService = null;
}
};
/**
* Tell our service to set an alarm for the given date
* @param c a date to set the notification for
*/
public void setAlarmForNotification(Calendar c){
mBoundService.setAlarm(c);
}
/**
* When you have finished with the service call this method to stop it
* releasing your connection and resources
*/
public void doUnbindService() {
if (mIsBound) {
// Detach our existing connection.
mContext.unbindService(mConnection);
mIsBound = false;
}
}
}
SecondActivity.java
public class SecondActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sl);
}
}
的AndroidManifest.xml
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SecondActivity" />
<service android:name=".ScheduleService" />
<service android:name=".NotifyService" />
</application>
答案 0 :(得分：0)
可以减少代码按照本教程的具体时间通知和重复时间通知http://smartandroidians.blogspot.in/2010/04/alarmmanager-and-notification-in.html