如何在Android中处理Home按钮

我是一名新的Android开发者， 我知道如何操作后退按钮，但我不知道如何操作主页按钮， 当我点击主页按钮时， 我尝试了很多方法， 但是没有使用， 请任何人帮我解决我的问题。 我使用了以下代码

 @Override
  public boolean onKeyDown(int keyCode, KeyEvent event) 
  {
    if(keyCode==KeyEvent.KEYCODE_HOME)
    {
        Toast.makeText(this, "Click Home ", Toast.LENGTH_LONG).show();
    }
    return super.onKeyDown(keyCode, event);
   }

public boolean isApplicationSentToBackground(final Context context) 
   {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    if (!tasks.isEmpty()) {
        ComponentName topActivity = tasks.get(0).topActivity;
        if (!topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}





@Override
public void onStop() {
    if (isApplicationSentToBackground(this)){
        //put your code here what u want to do

    }
    super.onStop();
}

---

您无法判断是否单击了主页按钮，也无法在按下主页按钮时阻止应用程序隐藏， 但你可以判断你的应用程序是否不再可见（后退键、主键或另一个应用程序已进入前台）

public boolean isApplicationSentToBackground(final Context context) 
   {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    if (!tasks.isEmpty()) {
        ComponentName topActivity = tasks.get(0).topActivity;
        if (!topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}





@Override
public void onStop() {
    if (isApplicationSentToBackground(this)){
        //put your code here what u want to do

    }
    super.onStop();
}

---

只需覆盖暂停时的

onPause

或停止时的

onStop

，并在那里添加日志。

您的

未返回主页按钮，请单击事件。

。但当您按下主页按钮时

public boolean isApplicationSentToBackground(final Context context) 
   {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    if (!tasks.isEmpty()) {
        ComponentName topActivity = tasks.get(0).topActivity;
        if (!topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}





@Override
public void onStop() {
    if (isApplicationSentToBackground(this)){
        //put your code here what u want to do

    }
    super.onStop();
}

调用此方法

  @Override
        protected void onStop() {

            super.onStop();
        }

public boolean isApplicationSentToBackground(final Context context) 
   {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    if (!tasks.isEmpty()) {
        ComponentName topActivity = tasks.get(0).topActivity;
        if (!topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}





@Override
public void onStop() {
    if (isApplicationSentToBackground(this)){
        //put your code here what u want to do

    }
    super.onStop();
}

---

您再也检测不到home press事件。 但你们也可以通过另一种方式获得新闻发布会，从逻辑上讲，这对我来说很有用，希望对你们也有用

public boolean isApplicationSentToBackground(final Context context) 
   {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    if (!tasks.isEmpty()) {
        ComponentName topActivity = tasks.get(0).topActivity;
        if (!topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}





@Override
public void onStop() {
    if (isApplicationSentToBackground(this)){
        //put your code here what u want to do

    }
    super.onStop();
}

在活动中定义此项

public static boolean OnPause = false;
public static boolean OnResume = false;

public boolean isApplicationSentToBackground(final Context context) 
   {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    if (!tasks.isEmpty()) {
        ComponentName topActivity = tasks.get(0).topActivity;
        if (!topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}





@Override
public void onStop() {
    if (isApplicationSentToBackground(this)){
        //put your code here what u want to do

    }
    super.onStop();
}

将此方法付诸实践

 @Override 
  protected void onPause() 
  { 
      // TODO Auto-generated method stub
      super.onPause(); 

       OnPause  = true;

  }

@Override
protected void onResume() {
    // TODO Auto-generated method stub
    super.onResume();

    OnResume = true;        

}
@Override
protected void onStop() {
    // TODO Auto-generated method stub
    super.onStop();

    if(OnPause == true && OnResume == false)
    {
        Log.e("My activity ", " **** home is press *** ");
        //Do Your Home press code Here.

    }

    OnPause = false;
    OnResume = false;

}

public boolean isApplicationSentToBackground(final Context context) 
   {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    if (!tasks.isEmpty()) {
        ComponentName topActivity = tasks.get(0).topActivity;
        if (!topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}





@Override
public void onStop() {
    if (isApplicationSentToBackground(this)){
        //put your code here what u want to do

    }
    super.onStop();
}

---

我找到了答案，请添加下面给出的代码-

public boolean isApplicationSentToBackground(final Context context) 
   {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    if (!tasks.isEmpty()) {
        ComponentName topActivity = tasks.get(0).topActivity;
        if (!topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}





@Override
public void onStop() {
    if (isApplicationSentToBackground(this)){
        //put your code here what u want to do

    }
    super.onStop();
}

public boolean isApplicationSentToBackground（最终上下文）
{
ActivityManager am=（ActivityManager）context.getSystemService（context.ACTIVITY_服务）；
列表任务=am.getRunningTasks（1）；
如果（！tasks.isEmpty（））{
ComponentName topActivity=tasks.get（0）.topActivity；
如果（！topActivity.getPackageName（）.equals（context.getPackageName（）））{
返回true；
}
}
返回false；
}
@凌驾
公共void onStop（）{
如果（是应用程序入口背景（本））{
//把你的代码放在这里你想做什么
}
super.onStop（）；
}

更改清单文件-

public boolean isApplicationSentToBackground(final Context context) 
   {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    if (!tasks.isEmpty()) {
        ComponentName topActivity = tasks.get(0).topActivity;
        if (!topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}





@Override
public void onStop() {
    if (isApplicationSentToBackground(this)){
        //put your code here what u want to do

    }
    super.onStop();
}

<uses-permission android:name="android.permission.GET_TASKS" />

---

由框架层处理的Android Home密钥您无法在应用层级别处理它。因为主页按钮操作已经在下面的级别中定义。但是，如果您正在开发自定义ROM，那么它可能是可能的。谷歌出于安全原因限制了HOME BUTTON override功能。

我不是舒尔，但我认为没有办法控制HOME BUTTON，因为恶意软件应用程序可能会阻止用户退出应用程序的最后一条路。请告诉我如何在暂停或停止时呼叫我你不在暂停/停止时呼叫，Android为您调用它，您只需覆盖其中一个方法，请参见此处：@parag这可能会给我带来问题。当我当时转到另一个活动时，第一个活动的顶部方法是第二次调用并执行代码。因此，这是一个暂时的解决方案，不是一个完美的工作解决方案。您启动应用程序，它调用onResume并将onResume设置为true。然后按下home按钮，调用onPause并设置onPause=true。然后它转到OnStop，永远不会进入IF条件，因为两个成员都是true。

public boolean isApplicationSentToBackground(final Context context) 
   {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    if (!tasks.isEmpty()) {
        ComponentName topActivity = tasks.get(0).topActivity;
        if (!topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}





@Override
public void onStop() {
    if (isApplicationSentToBackground(this)){
        //put your code here what u want to do

    }
    super.onStop();
}