[英]How to make AlarmBootReceiver send notification at specified time?
我有一個AlarmResiver類,如果用戶設置了時間並且撥動開關已打開,它將發送通知。 但是此類不好,因為當設備重新啟動時,不再收到通知。 然后,我決定創建一個AlarmBootResiver類,該類將在設備重啟后發送通知。 現在,該類正在運行,但是在打開設備后立即發送通知。 如何使AlarmBootResiver在用戶在AlarmResiver類中設置的時間發送通知?
AlarmActivity代碼:
public class AlarmActivity extends AppCompatActivity implements TimePickerDialog.OnTimeSetListener {
private EditText mondayText;
public SwitchCompat mondaySwitch;
SharedPreferences sPref;
String timeText = "";
final String SAVED_TEXT = "saved_text";
boolean switch_On_Off;
public static final String PREFS_NAME = "Switch_On_Off_check";
final Calendar c = Calendar.getInstance();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_alarm);
mondayText = findViewById(R.id.monday_time);
mondaySwitch = findViewById(R.id.switch_monday);
// load SharedPref save text in mondayText and save switch On else Off
loadText();
loadSwitchCheck();
mondaySwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (mondaySwitch.isChecked()) {
startAlarm(c);
bootStartAlarm(c);
}
saveSwitchCheck();
}
});
mondayText.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DialogFragment timePicker = new TimePickerFragment();
timePicker.show(getSupportFragmentManager(), "time picker");
}
});
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
c.set(Calendar.HOUR_OF_DAY, hourOfDay);
c.set(Calendar.MINUTE, minute);
c.set(Calendar.SECOND, 0);
updateTimeText(c);
saveText();
mondaySwitch.setChecked(false);
bootStopAlarm(c);
}
private void updateTimeText(Calendar c) {
timeText = "";
timeText += DateFormat.getTimeInstance(DateFormat.SHORT).format(c.getTime());
mondayText.setText(timeText);
}
public void startAlarm(Calendar c) {
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, AlertReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 1, intent, 0);
if (c.before(Calendar.getInstance())) {
c.add(Calendar.DATE, 1);
}
alarmManager.setExact(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), pendingIntent);
}
public void bootStartAlarm(Calendar c) {
PackageManager packageManager = AlarmActivity.this.getPackageManager();
ComponentName componentName = new ComponentName(AlarmActivity.this, AlarmBootReceiver.class);
packageManager.setComponentEnabledSetting(componentName,
PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
PackageManager.DONT_KILL_APP);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, AlarmBootReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 1, intent, 0);
alarmManager.setExact(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), pendingIntent);
}
public void bootStopAlarm(Calendar c) {
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, AlarmBootReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 1, intent, 0);
alarmManager.setExact(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), pendingIntent);
PackageManager packageManager = AlarmActivity.this.getPackageManager();
ComponentName componentName = new ComponentName(AlarmActivity.this, AlarmBootReceiver.class);
packageManager.setComponentEnabledSetting(componentName,
PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
}
我的AlertReciever
public class AlertReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
NotificationHelper notificationHelper = new NotificationHelper(context);
NotificationCompat.Builder nb = notificationHelper.getChannelNotification();
notificationHelper.getManager().notify(1, nb.build());
}
}
我的AlarmBootReciever
public class AlarmBootReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (Objects.equals(intent.getAction(), "android.intent.action.BOOT_COMPLETED")) {
NotificationHelper notificationHelper = new NotificationHelper(context);
NotificationCompat.Builder nb = notificationHelper.getChannelNotification();
notificationHelper.getManager().notify(1, nb.build());
}
}
}
我的清單文件
<receiver android:name=".AlertReceiver"/>
<receiver
android:name=".AlarmBootReceiver"
android:enabled="false">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
<action android:name="com.htc.intent.action.QUICKBOOT_POWERON" />
<action android:name="android.intent.action.REBOOT" />
</intent-filter>
</receiver>
</application>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.QUICKBOOT_POWERON" />
<uses-permission android:name="android.permission.VIBRATE" />
我的NotificationHelper
public class NotificationHelper extends ContextWrapper {
public static final String channelID = "channelID";
public static final String channelName = "Channel Name";
private NotificationManager mManager;
public NotificationHelper(Context base) {
super(base);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
createChannel();
}
}
@TargetApi(Build.VERSION_CODES.O)
private void createChannel() {
NotificationChannel channel = new NotificationChannel(channelID, channelName, NotificationManager.IMPORTANCE_HIGH);
getManager().createNotificationChannel(channel);
}
public NotificationManager getManager() {
if (mManager == null) {
mManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
}
return mManager;
}
public NotificationCompat.Builder getChannelNotification() {
Intent resultIntent = new Intent(this, DashBoardActivity.class);
PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 1, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);
return new NotificationCompat.Builder(getApplicationContext(), channelID)
.setContentTitle("ЭЙ ТЫ!")
.setContentText("Пора на тренировку!")
.setSmallIcon(R.drawable.ic_training)
.setAutoCancel(true)
.setContentIntent(resultPendingIntent);
}
}
您可以為此使用BroadcastReceiver
。 即使重新啟動設備或鎖定設備,此代碼也將起作用, PowerManager
會為您執行此操作。 請參閱此處以獲取更多信息https://developer.android.com/reference/android/os/PowerManager
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(context)
.setSmallIcon(YOUR DRAWABLE)
.setContentTitle("YOUR TITLE")
.setAutoCancel(true)
.setLights(0xFFFF0000, 500, 500)
.setColor(context.getResources().getColor(R.color.red))
.setDefaults(NotificationCompat.DEFAULT_SOUND)
.setContentText("THIS IS THE CONTENT OF THE NOTIFICATION");
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
@SuppressLint("InvalidWakeLockTag") PowerManager.WakeLock wakeLock = pm.newWakeLock((PowerManager.PARTIAL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP), "TAG");
wakeLock.acquire();
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, new Intent(context, MainActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder.setContentIntent(contentIntent);
NotificationManager mNotificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
// mNotificationId is a unique integer your app uses to identify the
// notification. For example, to cancel the notification, you can pass its ID
// number to NotificationManager.cancel().
mNotificationManager.notify(0, mBuilder.build());
}
}
您可以在MainActivity
使用它來觸發AlarmReceiver,例如,您可以在其中設置觸發時間,請參見注釋。
public void doNotification() {
AlarmManager alarmManager = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
Intent i = new Intent(this, AlarmReceiver.class);
PendingIntent pending = PendingIntent.getBroadcast(this, 0, i, PendingIntent.FLAG_CANCEL_CURRENT);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
// InexactRepeating allows Android to optimize the energy consumption //ms, s, min
alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 1000 * 60 * 60 * 24 * 30, pending); //every month
}
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