按下时隐藏软键盘 [英] Hide soft keyboard on pressing back

问题描述

我在Activity中有一个EditText，我希望它可以处于活动状态，并且在打开Activity时可以打开软键盘.这是我的xml for EditText:

I have an EditText in an Activity and I want it to be active and soft-keyboard be open when I open that Activity. Here is my xml for EditText:

<EditText
    android:background="@null"
    android:cursorVisible="true"
    android:elegantTextHeight="true"
    android:enabled="true"
    android:focusable="true"
    android:hint="Search"
    android:id="@+id/editText11"
    android:inputType="textNoSuggestions|textCapSentences"
    android:layout_centerVertical="true"
    android:layout_height="wrap_content"
    android:layout_width="match_parent"
    android:singleLine="true"
    android:textColor="#000000"
    android:textCursorDrawable="@null" />

，并且我已将android:windowSoftInputMode="stateVisible"用于具有此EditText的活动.

and I have used android:windowSoftInputMode="stateVisible" for the activity in which I have this EditText.

问题是，当我按下back一次时，键盘没有隐藏(理想情况下在所有其他EditText中都隐藏了)，而当我再次按下back时，它关闭了Activity.第一次按back时，我不接到onBackPressed()的电话，而第二次按back时，我这样做.为什么会发生这种行为以及如何解决?

The problem is, when I press back once, the keyboard does not hide(ideally it does in all other EditTexts) and when I press back again, it closes the Activity. On the first back press, I am not getting a call to onBackPressed() while on the second back press, I do. Why is this kind of behaviour is happening and how to resolve it?

编辑，我想要的是，如果键盘是打开的，请按回去以关闭键盘，如果键盘没有打开，请关闭活动.

Edit What I want is, if keyboard is open, pressing back should close the keyboard and if the keyboard is not open, then close the activity.

推荐答案

尝试一下...

创建一个名为Util的类，并放置以下代码

public static void hideSoftKeyboard(Activity activity) {
    final InputMethodManager inputMethodManager = (InputMethodManager) activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
    if (inputMethodManager.isActive()) {
        if (activity.getCurrentFocus() != null) {
            inputMethodManager.hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(), 0);
        }
    }
}

，然后调用Activity的onBackPressed()

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