有什么方法可以检测Android片段中的userInterations? [英] Is there any way to Detect userInterations in Android fragments?

问题描述

有人能帮助我解决这种情况吗?

Could any one help me out with this situation.

我已经为Android Activity实现了 OnUserInteraction()方法，对我来说效果很好.

I have implemented OnUserInteraction() method for Android Activity it is working fine for me.

但是我也想将其用于 Fragments .如何调用 OnUserInteraction()或还有其他方法来标识 userInteraction UI .

But I want it for Fragments too.How can i able call OnUserInteraction() or is there any another way to identify userInteraction with the UI.

推荐答案

@Sunil的答案会导致java.lang.StackOverflowError，因此我进行了更正.下面的代码运行顺利

@Sunil's answer causes java.lang.StackOverflowError so I corrected it. Below code works smoothly

在您的应用中创建一个名为UserInterationListener的Java类，并在下面放置代码

Create a java class in your app named UserInterationListener and put below code there

public interface UserInteractionListener {
    void onUserInteraction();
}

然后在您的活动中为此界面创建一个实例变量，如下所示

Then create an instance variable in your activity, for this interface as below

private UserInteractionListener userInteractionListener;

然后在您的活动中为该变量实现一个setter方法.

Then implement a setter method for this variable, in your activity.

public void setUserInteractionListener(UserInteractionListener userInteractionListener) {
    this.userInteractionListener = userInteractionListener;
}

现在覆盖您活动的onUserInteraction方法，如果listener变量不为null，则调用接口方法.

Now override the onUserInteraction method of your activity and if the listener variable is not null, invoke the interface method.

@Override
public void onUserInteraction() {
    super.onUserInteraction();
    if (userInteractionListener != null)
        userInteractionListener.onUserInteraction();
}

现在，在您的片段类中，如下实现UserInteractionListener

Now, in your fragment class, implement UserInteractionListener as below

public myFragment extends Fragment implements UserInteractionListener

还覆盖接口的方法

@Override
public void onUserInteraction(){
//TODO://do your work on user interaction
}

然后在您的片段中调用活动的userinteraction setter方法，如下所示

then in your fragment invoke your activity's userinteraction setter method like below

((YourActivity) getActivity()).setUserInteractionListener(this);

这最后一部分很重要.

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