android – 用于Screen On / Off的BroadcastReceiver无法正常工作

我试图使用BroadcastReceiver,但它不工作,请帮我解决这个问题.
MyReceiver. java

package com.example.broadcast_receiver;
 
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
 
public class MyReceiver extends BroadcastReceiver {
 
    @Override
    public void onReceive(Context context,Intent intent) {
        // TODO Auto-generated method stub
        Log.i("[BroadcastReceiver]","MyReceiver");
 
        if(intent.getAction().equals(Intent.ACTION_SCREEN_ON)){
            Log.i("[BroadcastReceiver]","Screen ON");
        }
        else if(intent.getAction().equals(Intent.ACTION_SCREEN_OFF)){
            Log.i("[BroadcastReceiver]","Screen OFF");
        }
    }
}

AndroidManifest.xml中

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.broadcast_receiver"
    android:versionCode="1"
    android:versionName="1.0" >
 
    <uses-sdk
        android:minSdkVersion="9"
        android:targetSdkVersion="16" />
 
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
 
        <receiver android:name=".MyReceiver" 
            android:enabled="true"
            android:exported="false">
            <intent-filter>
                <action android:name="android.intent.action.SCREEN_ON"/>
                <action android:name="android.intent.action.SCREEN_OFF"/>
            </intent-filter>
        </receiver>
 
        <activity
            android:name="com.example.broadcast_receiver.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 
</manifest>

BroadcastReceiver无法正常工作且没有制作任何日志,请帮我解决这个问题.

解决方法

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public class MainActivity extends Activity {
 
    //Create broadcast object
    BroadcastReceiver mybroadcast = new BroadcastReceiver() {    
        //When Event is published,onReceive method is called
        @Override
        public void onReceive(Context context,Intent intent) {
            // TODO Auto-generated method stub
            Log.i("[BroadcastReceiver]","MyReceiver");
 
            if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
                Log.i("[BroadcastReceiver]","Screen ON");
            }
            else if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
                Log.i("[BroadcastReceiver]","Screen OFF");
            }
 
        }
    };
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        registerReceiver(mybroadcast,new IntentFilter(Intent.ACTION_SCREEN_ON));
        registerReceiver(mybroadcast,new IntentFilter(Intent.ACTION_SCREEN_OFF));
    }
}

android – 用于Screen On / Off的BroadcastReceiver无法正常工作

解决方法

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