java– 重新启动后BroadcastReceiver无法正常工作

概述我的BroadcastReceiver工作正常,但是当我重新启动手机时,所有通知都停止工作.AndroidManifest.xml中<?xmlversion="1.0"encoding="utf-8"?><manifestxmlns:android="http://schemas.android.com/apkes/android"package="com.example.a52780.no

我的broadcastReceiver工作正常,但是当我重新启动手机时,所有通知都停止工作.

AndroidManifest.xml中

<?xml version="1.0" enCoding="utf-8"?><manifest xmlns:androID="http://schemas.androID.com/apk/res/androID"    package="com.example.a52780.nontifications"    androID:installLocation="internalOnly">    <uses-permission androID:name="androID.permission.SET_ALARM"/>    <uses-permission androID:name="androID.permission.RECEIVE_BOOT_COMPLETED "/>    <application        androID:allowBackup="true"        androID:icon="@mipmap/ic_launcher"        androID:label="@string/app_name"        androID:roundIcon="@mipmap/ic_launcher_round"        androID:supportsRtl="true"        androID:theme="@style/Apptheme">        <activity androID:name=".MainActivity">            <intent-filter>                <action androID:name="androID.intent.action.MAIN" />                <category androID:name="androID.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <receiver            androID:name=".AlarmReceiver"            androID:priority="999">            <intent-filter>                <action androID:name="androID.intent.action.BOOT_COMPLETED" />                <action androID:name="androID.intent.action.QUICKBOOT_POWERON" />            </intent-filter>        </receiver>    </application></manifest>

AlarmReceiver.java

public class AlarmReceiver extends broadcastReceiver {    @OverrIDe    public voID onReceive(Context context, Intent intent) {            // Get ID & message from Intent            int notificationID = intent.getIntExtra("notificationID", 0);            String message = intent.getStringExtra("text");            // when notif. is tapped, call MainActivity            Intent mainIntent = new Intent(context, MainActivity.class);            PendingIntent contentIntent = PendingIntent.getActivity(context, 0, mainIntent, 0);            notificationmanager mynotificationmanager =                    (notificationmanager) context.getSystemService(Context.NOTIFICATION_SERVICE);            // PREPARE NOTIF            Notification.Builder builder = new Notification.Builder(context);            builder.setSmallicon(androID.R.drawable.ic_dialog_info)                    .setContentTitle("Wake up!")                    .setContentText(message)                    .setWhen(System.currentTimeMillis())                    .setContentIntent(contentIntent);            mynotificationmanager.notify(notificationID, builder.build());        }}

另外我试着把androID：enabled =“true”和androID：exported =“false”放在接收器中.但它没有用.应用程序安装在手机内存中,而不是安装在SD卡上. broadcastReceiver应该可以工作,无论如何它在重启后都不起作用

解决方法:

我刚刚找到解决方案！

AndroIDManifest.xml中

<receiver        androID:name="com.example.a52780.nontifications.AlarmReceiver"        androID:enabled="true"        androID:exported="false"        androID:permission="androID.permission.RECEIVE_BOOT_COMPLETED">        <intent-filter>            <action androID:name="androID.intent.action.BOOT_COMPLETED" />            <action androID:name="androID.intent.action.QUICKBOOT_POWERON" />        </intent-filter>    </receiver>    <service        androID:name="com.example.a52780.nontifications.BootService"        androID:enabled="true"        androID:exported="false"/>

我还添加了BootService.java

private voID setAlarm(Intent intent) {    int notificationID = intent.getIntExtra("notificationID", 0);    String text = intent.getStringExtra("text");    Intent mainIntent = new Intent(this, MainActivity.class);    PendingIntent contentIntent = PendingIntent.getActivity(this, 0, mainIntent, 0);    notificationmanager mynotificationmanager =            (notificationmanager) this.getSystemService(Context.NOTIFICATION_SERVICE);    Notification.Builder builder = new Notification.Builder(this);    builder.setSmallicon(androID.R.drawable.ic_dialog_info)            .setContentTitle("Wake up!")            .setContentText(text)            .setWhen(System.currentTimeMillis())            .setContentIntent(contentIntent);    mynotificationmanager.notify(notificationID, builder.build());}@OverrIDeprotected voID onHandleIntent(@Nullable Intent intent) {    setAlarm(intent);    Intent service = new Intent(this, BootService.class);    stopService(service);}

AlarmReceiver.java

private static final String BOOT_COMPLETED =        "androID.intent.action.BOOT_COMPLETED";private static final String QUICKBOOT_POWERON =        "androID.intent.action.QUICKBOOT_POWERON";@OverrIDepublic voID onReceive(Context context, Intent intent) {    // Get ID & message from Intent    int notificationID = intent.getIntExtra("notificationID", 0);    String message = intent.getStringExtra("text");    String action = intent.getAction();    if (BOOT_COMPLETED.equals(action) ||            QUICKBOOT_POWERON.equals(action)) {        Intent service = new Intent(context, BootService.class);        intent.putExtra("notificationID", notificationID);        intent.putExtra("text", message);        context.startService(service);    }    }

我在MainActivity中更改了调用intent的代码.
旧：

Intent intent = new Intent(MainActivity.this, AlarmReceiver.class);            intent.putExtra("notificationID", notificationID);            intent.putExtra("text", text);            intent.putExtra("alarmStartTime", alarmStartTime);                           PendingIntent alarmIntent = PendingIntent.getbroadcast(MainActivity.this, notificationID, intent, PendingIntent.FLAG_CANCEL_CURRENT);            AlarmManager alarm = (AlarmManager) getSystemService(ALARM_SERVICE);

IDk为什么,但添加后才有效

intent.setAction("androID.intent.action.BOOT_COMPLETED");intent.setAction("androID.intent.action.QUICKBOOT_POWERON");

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