Question

Alarm manager无法在我的手机“Kitkat”上运行，但它适用于Emulator GenyMotion API 25 我想知道什么是错的？

我在主要活动中称之为

PollReceiver.scheduleAlarms(getApplicationContext());

以下是所涉及的课程：

package com.hema.engshow;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.SystemClock;

import java.util.Calendar;

import static android.content.Context.ALARM_SERVICE;

public class PollReceiver extends BroadcastReceiver {
    static AlarmManager mAlarmManager;

    @Override
    public void onReceive(Context ctxt, Intent i) {
        scheduleAlarms(ctxt);
    }

    static void scheduleAlarms(Context ctxt) {
        Calendar mCalendar = Calendar.getInstance();
        mCalendar.set(Calendar.HOUR_OF_DAY,14);
        mCalendar.set(Calendar.MINUTE,47);
        mCalendar.set(Calendar.SECOND,10);

        Intent intent=new Intent(ctxt,AlarmReceiver.class);
        PendingIntent broadcast=   PendingIntent.getBroadcast(ctxt,
                101,intent,PendingIntent.FLAG_UPDATE_CURRENT);

        mAlarmManager=(AlarmManager) ctxt.getSystemService(ALARM_SERVICE);

        mAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP,mCalendar.getTimeInMillis(),AlarmManager.INTERVAL_DAY,broadcast);
    }
}

这就是alarmReciever：

package com.hema.engshow;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.TaskStackBuilder;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.support.v4.app.NotificationCompat;
import android.text.format.Time;

import java.util.logging.FileHandler;

import static android.content.Context.NOTIFICATION_SERVICE;

/**
 * Created by hema on 7/30/2017.
 */

public class AlarmReceiver extends BroadcastReceiver {   
    @Override
    public void onReceive(Context context, Intent intent) {
        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

        Intent notificationIntent = new Intent(context, MainActivity.class);
        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(context,100,notificationIntent,PendingIntent.FLAG_UPDATE_CURRENT);


        NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
                .setContentTitle("Demo App Notification")
                .setContentText("New Notification From Demo App..")
                .setTicker("New Message Alert!")
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentIntent(pendingIntent)
                .setAutoCancel(true);


        notificationManager.notify(0, builder.build());
    }
}

最后这里是清单文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.hema.engshow">

    <uses-permission android:name="android.permission.WAKE_LOCK"/>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

    <uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>

    <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">

        </activity>
        <activity android:name=".Vocab">
        </activity>
        <activity android:name=".splash">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>

        <receiver android:name=".AlarmReceiver" />
        <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
        <receiver android:name="PollReceiver">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED"/>
            </intent-filter>
        </receiver>
    </application>
</manifest>

和gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.hema.engshow"
        minSdkVersion 16
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    compile 'com.android.support:recyclerview-v7:25.0.0'
    compile 'com.android.support:cardview-v7:25.0.0'
    compile 'com.squareup.picasso:picasso:2.5.2'
    compile 'com.android.support:design:23.1.1'
    compile 'com.google.code.gson:gson:2.6.2'
}

我希望有人能帮助我找出问题，因为我到处搜索但是徒劳无功。

Answer 1

if (Build.VERSION.SDK_INT >= 23) {
            alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, calobj.getTimeInMillis(), pendingIntent);
        } else if(Build.VERSION.SDK_INT >= 19){
            alarmManager.setExact(AlarmManager.RTC_WAKEUP, calobj.getTimeInMillis(), pendingIntent);
        } else{
            alarmManager.set(AlarmManager.RTC_WAKEUP, calobj.getTimeInMillis(), pendingIntent);
        }

对于不同API级别的AlarmManager有一些方法更改尝试上面的代码，它可以在Android文档中找到相同的重复警报一次性警报

通知经理在Kitkat不起作用

1 个答案: