监听HOME按钮按下并重新启动活动

Question

我试图阻止HOME键按键响应时服务运行

protected void onPause() { 
    if (isMyServiceRunning()) 
    { 
     Intent Act2Intent = new Intent(PhysicalTheftDialog.this, PhysicalTheftDialog.class);    
     startActivity(Act2Intent); 
    } 
    else { 

    } 
} 

private boolean isMyServiceRunning() { 
    ActivityManager manager = (ActivityManager) getSystemService(ACTIVITY_SERVICE); 
    for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { 
     if ("nyp.android.project.MyService".equals(service.service.getClassName())) { 
      return true; 
     } 
    } 
    return false; 
} 

但每次当我按下HOME键的应用程序崩溃。

Answer 1

看到，出于安全原因，android开发人员本身不允许我们用home按钮来改变任何类型的行为。但即使如果你真的想禁用主页按钮，你可以通过添加以下代码来做到这一点：

@Override 
public void onAttachedToWindow() { 
    this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD); 
    super.onAttachedToWindow(); 
} 

@Override  
public boolean onKeyDown(int keyCode, KeyEvent event) { 
    if(keyCode == KeyEvent.KEYCODE_HOME) { 
     Log.i("Home Button","Clicked"); 
    } 

    if(keyCode==KeyEvent.KEYCODE_BACK) { 

     finish(); 
    } 
    return false; 
}