Question

我的应用程序仅包含广播接收器类。我只是想在手机完全启动时在logcat中显示一条消息。为此，我使用了“ACTION_BOOT_COMPLETED”。

BroadCast接收器类

package com.example.serviceproject;

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

    public class BroadCastClass extends BroadcastReceiver
    {
        @Override
        public void onReceive(Context context, Intent intent)
        {
            if(intent.getAction() != null)
            {
                if(intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED))
                {
                    Log.i("BroadCastClass","BOOT COMPLETED detected");
                }
            }
        }
    };

在清单中：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.serviceproject"
    android:versionCode="1"
    android:versionName="1.0" 
    android:installLocation="internalOnly"
      android:permission="android.permission.RECEIVE_BOOT_COMPLETED">

    <uses-sdk
        android:minSdkVersion="16"
        android:targetSdkVersion="16" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <receiver android:name=".BroadCastClass"  android:enabled="true" android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED">
                    <category android:name="android.intent.category.DEFAULT"/> 
                </action>
            </intent-filter>
        </receiver>
    </application>

</manifest>

但是，当我启动手机时，邮件不会显示在logcat中。我有什么不对吗??

Answer 1

尝试使用此代码...

 package com.example.serviceproject;

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

        public class BroadCastClass extends BroadcastReceiver
        {
            @Override
            public void onReceive(Context context, Intent intent)
            {

                        Log.i("BroadCastClass","BOOT COMPLETED detected");

            }
        };

和清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.serviceproject"
    android:versionCode="1"
    android:versionName="1.0" 
    android:installLocation="internalOnly"
      android:permission="android.permission.RECEIVE_BOOT_COMPLETED">

    <uses-sdk
        android:minSdkVersion="16"
        android:targetSdkVersion="16" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <receiver android:name="BroadCastClass">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED">
                    <category android:name="android.intent.category.DEFAULT"/> 
                </action>
            </intent-filter>
        </receiver>
    </application>

</manifest>

Answer 2

试试这个：

<receiver android:name="com.example.serviceproject.BroadCastClass" android:enabled="true" android:exported="true">
<intent-filter>
     <action android:name="android.intent.action.BOOT_COMPLETED" />
     <category android:name="android.intent.category.DEFAULT" />
</intent-filter>

希望这有帮助。

BroadCast Receiver无法启动

2 个答案: