Java 如何使用AlarmManager set（）设置报警

我尝试在我的android应用程序中设置警报。但它失败了。我读过一些教程，但它们对我不起作用，我不知道我的错误在哪里

这是我的密码：

舱单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.byethost6.jessy_barthelemy.planificate">

    <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:supportsRtl="true"
        android:theme="@style/AppTheme">


        <activity android:name=".CreateTask"></activity>

        <receiver android:name="com.byethost6.jessy_barthelemy.planificate.HourReceiver" android:process=":remote"/>

    </application>

</manifest>

这是我的广播接收器：

package com.byethost6.jessy_barthelemy.planificate;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

import com.byethost6.jessy_barthelemy.planificate.enumeration.TriggerEnum;
import com.byethost6.jessy_barthelemy.planificate.helper.Task;

public class HourReceiver extends BroadcastReceiver{
    @Override
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(context, "ALARM TRIGGERED", Toast.LENGTH_LONG).show();
    }
}

---

你能帮帮我吗？：）

这是我在

main活动中的报警

alarmManager = (AlarmManager)getApplicationContext().getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(getApplicationContext(), MyBroadcastReceiver.class);
pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, 0);

// Set the alarm to start at some time.
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
int curHr = calendar.get(Calendar.HOUR_OF_DAY);

// Checking whether current hour is over 14
if (curHr >= 13)
{
    // Since current hour is over 14, setting the date to the next day
    calendar.add(Calendar.DATE, 1);
}

calendar.set(Calendar.HOUR_OF_DAY, 13);
calendar.set(Calendar.MINUTE, 30);

// setRepeating() lets you specify a precise custom interval--in this case,
// every day
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
                AlarmManager.INTERVAL_DAY, pendingIntent);

这是我的

BroadcastReceiver

public class MyBroadcastReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent)
    {
        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);

        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "tag");

        //Acquire the lock
        wl.acquire();

        Log.v("ADebugTag", "It work!");

        //Release the lock
        wl.release();
    }
}

通过日志中的此代码，您可以在警报触发时看到“它工作”

舱单

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

什么叫“it失败”？崩溃错误？警告？你把闹钟放哪儿了？因为您在管理报警的活动中看到“报警已触发”。什么也没有发生。我的闹钟设置在主活动中。小建议：不要用“我已经尝试了你的代码，但它不起作用。闹钟没有启动”来回答你的问题，但要评论我的回答：D。你有没有把我在邮件中发布的权限写在清单上？好的，我是stackoverflow的新手。是的，我已经输入了权限。我已经尝试了你的代码，但它不起作用。闹钟没响。

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