小编Sae*_*abi的帖子

我为adnroid设计了一个锁屏.当用户按下电源按钮解锁时,我正在尝试使用广播接收器来启动锁屏活动.

public class Receiver extends BroadcastReceiver {

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

    if(intent.getAction().equals(Intent.ACTION_SCREEN_ON)){
        Log.w("BAM", "Screen went on");
    }

    else if(intent.getAction().equals(Intent.ACTION_SCREEN_OFF)){
        Log.w("BAM","Screen went off");
    }
}

}

android清单:`

<uses-sdk
    android:minSdkVersion="7"
    android:targetSdkVersion="21" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".MyLockScreenActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <receiver
        android:name="MyAdminReceiver"
        android:permission="android.permission.BIND_DEVICE_ADMIN">
        <meta-data
            android:name="android.app.device_admin"
            android:resource="@xml/admin"/>

        <intent-filter>
            <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
        </intent-filter>
    </receiver>
    <receiver android:name=".Receiver">
      <intent-filter>
        <action android:name="android.intent.action.USER_PRESENT" />
        <action android:name="android.intent.action.ACTION_SHUTDOWN" />
     </intent-filter>
    </receiver>
    <activity android:name=".LockScreen"></activity>
</application>

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