Question

我试图在屏幕开启时启动应用程序。它是一个LockScreen，所以它应该在每次屏幕亮起时显示。以下代码是我到目前为止写的，我不确定是什么问题。没有错误消息。应用程序只是正常运行，但在屏幕亮起时不会启动。

这是我的接收者：

package com.example.screenlocker;

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

public class StartMyServiceAtBootReceiver extends BroadcastReceiver {


public static boolean screenOff = true;

@Override
public void onReceive(Context context, Intent intent) {
    if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
        screenOff = true;
        Intent i = new Intent(context,LockService.class);
        i.putExtra("screen_state", screenOff);
        context.startService(i);



    } else if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
        screenOff = false;
    }
}

这是我的服务：

package com.example.screenlocker;

import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.IBinder;

public class LockService extends Service {

public void onCreate(){
    IntentFilter filter=new IntentFilter(Intent.ACTION_SCREEN_ON);
    filter.addAction(Intent.ACTION_SCREEN_OFF);
    BroadcastReceiver locker=new StartMyServiceAtBootReceiver();
    registerReceiver(locker, filter);
}

  @Override
  public void onStart(Intent intent, int startId) {
      boolean screenOn = intent.getBooleanExtra("screen_state", false);        
      if(screenOn){
                startActivity(new Intent(this, MainActivity.class));  

               }

  }

@Override
public IBinder onBind(Intent arg0) {
    // TODO Auto-generated method stub
    return null;
}
}

也许你知道出了什么问题。

Answer 1

如果我看得正确的话，你给了if表达式错误。

if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
    screenOff = true;
    Intent i = new Intent(context,LockService.class);
    i.putExtra("screen_state", screenOff);
    context.startService(i);



}

打开时设置screenOff = true。将其切换为false并在Action_SCREEN_OFF中显示为true。

屏幕打开时打开应用程序

1 个答案: