安卓 - 每日通知

Question

我有这个应用程序，当设备启动或打开应用程序时，它会在通知服务中启动功能notifiy()我的问题是我如何使这个 notifiy() 函数每天在特定时间制作，例如在(上午 12：00、3：00)我搜索了一段时间，我看到的只是使用 AlarmManager，但我不明白如何在我的代码中使用它

主活动

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
startService(new Intent(this,NotificationService.class));

引导接收器

public class BootReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
context.startService(new Intent(context,NotificationService.class));
}
}

通知服务

public class NotificationService extends Service {
private MediaPlayer mediaPlayer;
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
notifiy();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
try {
}catch (Exception e){
e.printStackTrace();
}
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
try {
}catch (Exception e){
e.printStackTrace();
}
Intent intent=new Intent("com.company.app");
intent.putExtra("yourvalue","torestore");
sendBroadcast(intent);
}
public void notifiy(){
IntentFilter intentFilter=new IntentFilter();
intentFilter.addAction("RSSPullService");
Intent mIntent=new Intent(Intent.ACTION_VIEW, Uri.parse(""));
PendingIntent pendingIntent=PendingIntent.getActivity(getBaseContext(),0,mIntent,Intent.FLAG_ACTIVITY_NEW_TASK);
Context context=getApplicationContext();
Notification.Builder builder;
builder=new Notification.Builder(context)
.setContentTitle(title)
.setContentText("")
.setContentIntent(pendingIntent)
.setDefaults(Notification.DEFAULT_SOUND)
.setAutoCancel(true)
.setSmallIcon(R.drawable.images);
Notification notification=builder.build();
NotificationManager notificationManager=(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(1,notification);
mediaPlayer = MediaPlayer.create(this, R.raw.msound);
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mediaPlayer.start();
}
});
}
}

Answer 1

1.如果要在launching应用程序之后设置alarm，则可以在MainActivity'sonCreate()方法中添加以下代码：

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Schedule Date & time
Calendar target = Calendar.getInstance();
target.set(2017, 5, 3, 12, 0, 0); 
// Intent
Intent mIntent = new Intent(getApplicationContext(), AlarmReceiver.class);
mIntent.putExtra("MSG_ID", "SOME MESSAGE");
// Pending broadcast intent
PendingIntent mPI = PendingIntent.getBroadcast(getApplicationContext(), 0, mIntent, PendingIntent.FLAG_UPDATE_CURRENT);
// Alarm manager
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
// Set alarm
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, target.getTimeInMillis(), AlarmManager.INTERVAL_DAY, mPI);       
}

2.如果要在完成后设置alarmboot则可以BootReceiver'sonReceive()方法中添加该代码：

public class BootReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
// Schedule Date & time
Calendar target = Calendar.getInstance();
target.set(2017, 5, 3, 12, 0, 0); 
// Intent
Intent mIntent = new Intent(getApplicationContext(), AlarmReceiver.class);
mIntent.putExtra("MSG_ID", "SOME MESSAGE");
// Pending broadcast intent
PendingIntent mPI = PendingIntent.getBroadcast(getApplicationContext(), 0, mIntent, PendingIntent.FLAG_UPDATE_CURRENT);
// Alarm manager
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
// Set alarm
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, target.getTimeInMillis(), AlarmManager.INTERVAL_DAY, mPI);   
}
}

这是AlarmReceiver类：

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent)
{
context.startService(new Intent(context, NotificationService.class));
Log.d("AlarmReceiver", "Called ");
}
}

在AndroidManifest.xml中声明AlarmReceiver类：

<receiver
android:name="YOUR_PACKAGE.AlarmReceiver">
</receiver>