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