android - ACTION_SCREEN_ON 和 ACTION_SCREEN_OFF 不起作用？

Question

我试图在屏幕关闭(锁定)时关闭 WiFi，并在屏幕打开(解锁)时再次打开它。

我制作了一个BroadcastReceiver；放入 list 代码:

<receiver android:name="MyIntentReceiver">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
                <action android:name="android.intent.action.SCREEN_OFF" />
                <action android:name="android.intent.action.SCREEN_ON" />
                <action android:name="android.intent.action.USER_PRESENT" />
                <category android:name="android.intent.category.HOME" />
                <category android:name="android.intent.category.LAUNCHER" />    
            </intent-filter>
        </receiver>

这是 MyIntentReceiver 类:

package org.androidpeople.boot;

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

public class MyIntentReceiver extends BroadcastReceiver {
    // Called when boot completes

    public static boolean startup;

    @Override
    public void onReceive(Context context, Intent intent) {
        // Set what activity should launch after boot completes

        System.out.println("Intent Action: " + intent.getAction());

        if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {

            System.out.println("locked : ACTION_SCREEN_OFF");

        } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {

            System.out.println("not locked : ACTION_SCREEN_ON ");

        } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {

            System.out.println("User Unlocking it ");

        } 
        else if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
            // this to indicate that program is running
            // automaticlly not manually by user
            startup = true;
            System.out.println("Automatic BOOT at StartUp");

            Intent startupBootIntent = new Intent(context, LaunchActivity.class);
            startupBootIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(startupBootIntent);
        }

    }
}

结果是 - ACTION_SCREEN_ON并且 ACTION_SCREEN_OFF 从未触发!USER_PRESENT 和 BOOT_COMPLETED 工作正常，但另一个没有。我使用的是模拟器，而不是真实设备 - 这会导致问题吗？

有什么帮助吗？我需要打开和关闭屏幕才能启用/禁用 WiFi以节省电池。

提前致谢

Answer 1

要捕获 SCREEN_OFF 和 SCREEN_ON 操作(可能还有其他操作)，您必须通过代码而不是 list 来配置 BroadcastReceiver。

IntentFilter intentFilter = new IntentFilter(Intent.ACTION_SCREEN_ON);
intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
BroadcastReceiver mReceiver = new ScreenStateBroadcastReceiver();
registerReceiver(mReceiver, intentFilter);

它已经过测试并且可以正常工作。