为什么广播接收器不执行 BOOT_COMPLETED 并且不显示 toast 消息？

Question

• 我正在尝试使用 BOOT_COMPLETED 操作注册的广播接收器的简单示例...但是，应用程序没有提供 toast 消息...我搜索了很多...尝试了在 manifest.xml 和 java 中注册接收器的两种方法代码也...但我真的不知道它有什么问题...
• 请帮我解决这个问题，因为我需要在启动时启动服务..
• 提前致谢..

1) 活动类

public class BootReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent arg1) {
        Toast.makeText(context, "Boot is completed..", Toast.LENGTH_SHORT).show();
    }
} 

2) 清单.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.bootupservicedemoagain"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <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="com.example.bootupservicedemoagain.BootReceiver" >
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />

                <category android:name="android.intent.category.HOME" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

我也在活动类 onReceive 方法中尝试过这个，但结果相同！

if(intent.getAction() != null) 
{
    if(intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED))
    {
        Toast.makeText(context, "Boot is completed..", Toast.LENGTH_SHORT).show();
    }
}

Answer 1

对您的意图过滤器尝试操作权限android.intent.action.QUICKBOOT_POWERON。它为我解决了同样的问题。您在清单文件中的接收器声明应如下所示：

 <receiver android:name="com.example.bootupservicedemoagain.BootReceiver" >
    <intent-filter>
       <action android:name="android.intent.action.BOOT_COMPLETED" />
       <action android:name="android.intent.action.QUICKBOOT_POWERON" />
    </intent-filter>
 </receiver>

另外，类别<category android:name="android.intent.category.HOME" /> 也不需要。

Answer 2

看来我的注册和你的启动接收器注册的区别在于清单中的类别。

<category android:name="android.intent.category.HOME" />

考虑删除该行并重试。

用我的代码编辑

public class OnBootReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {

        /**
         * The onReceive method is a default method which is called when the broadcast
         * receiver is registered and the intent with the action below is sent.
         * This action will start the service. ACTION_BOOT_COMPLETED is defined in the 
         * AndroidManifest.xml.
         */
        if (Intent.ACTION_BOOT_COMPLETED.equalsIgnoreCase(intent.getAction())) {
            Intent myIntent = new Intent(context, MyService.class);
            context.startService(myIntent);
        }

    }

}

清单

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

<!-- Handling for On Boot Receiver -->
    <receiver android:name="path.to.OnBootReceiver" >
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>
    <!-- End Handling for On Boot Receiver -->

<service
    android:name="path.to.service"
    android:enabled="true"
    android:exported="false" >
</service>

Answer 3

以下组合对我有用： 在清单文件中

        <!-- Get Boot Action -->
    <receiver
        android:name="com.example.try.BootBroadcast"
        android:enabled="true"
        android:exported="true"
        android:label="MintBootReceiver"
        android:permission="android.permission.RECEIVE_BOOT_COMPLETED" >
        <intent-filter>
            <action android:name="android.intent.action.ACTION_BOOT_COMPLETED" />
            <action android:name="android.intent.action.BOOT_COMPLETED" >
                <action android:name="android.intent.action.QUICKBOOT_POWERON" />
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.HOME" />
                <category android:name="android.intent.category.LAUNCHER" />
                <category android:name="android.intent.category.DEFAULT" />
            </action>
        </intent-filter>

对于 JAVA 广播和你所做的一样

public class BootBroadcast extends BroadcastReceiver {

// Strings - Log
final String TAG = "BootBroadCast";

@Override
public void onReceive(Context mBootCtx, Intent mBootIntent) {
    Log.i(TAG, "BootBroadCast BroadcastReceiver +++STARTED+++");
    Log.d(TAG, "@Boot actionCaught :" + mBootIntent.getAction());
        if ("android.intent.action.BOOT_COMPLETED".equals(mBootIntent
                .getAction())) {
            Log.d(TAG, "@Boot actionCaught :" + mBootIntent.getAction());
            // Now you are getting your Boot reciever
        }
    Log.i(TAG, "BootBroadCast BroadcastReceiver ---END/FIN---");
}

请告诉我这是否有帮助。

Answer 4

有时接收者的完整路径会出现问题。试试相对

    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.QUICKBOOT_POWERON" />
    <receiver
        android:name=".BootReceiver" >
        <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" />
        </intent-filter>
    </receiver>