如何在Android(可能是上下文)的外部类中调用getCurrentFocus()而不是活动 [英] How to call getCurrentFocus() in external class in Android(Maybe Context) instead of activity

问题描述

我想从活动或片段中调用getCurrentFocus()以使结构看起来很漂亮，但是如何调用该方法呢?有时我使用上下文作为参数来实现类似的功能.

I want to call getCurrentFocus() out of activity or fragment to let the structure looks beautiful.But how can I call the method?Sometimes I use context as a parameter to achieve similar function.

推荐答案

您可以使用活动"，创建一个名为 Utils 的类，然后将以下代码放入其中.

You can do this by using Activity, Create a class named Utils and put the following code in it.

public class Utils{
public static void hideKeyboard(@NonNull Activity activity) {
    // Check if no view has focus:
    View view = activity.getCurrentFocus();
    if (view != null) {
        InputMethodManager inputManager = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
        inputManager.hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
    }
  }
}

现在，您可以在任何Activity中简单地调用此方法以隐藏键盘

Now you can simply call this method in any Activity to hide keyboard

Utils.hideKeyboard(Activity MainActivity.this);

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