简单的方法是在EditText视图中设置以下属性。

android:imeOptions="actionDone" 

there are two ways to do so...

method 1:in manifest file

define the line **android:windowSoftInputMode="adjustPan|stateAlwaysHidden"** of code in your manifest.xml file as below...

<activity
            android:name="packagename.youactivityname"
            android:screenOrientation="portrait"
            android:windowSoftInputMode="adjustPan|stateAlwaysHidden" />

Method 2 : in Activity or Java class

 if(getCurrentFocus()!=null) {
            InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE)`enter code here`;
            inputMethodManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
        }

它会work....@ASK

只需在BaseActivity和BaseFragment中为整个应用程序创建通用方法

在onCreate（）中初始化inputMethodManager

inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);

使用此方法隐藏和显示键盘

public void hideKeyBoard(View view) {
     if (view != null) {
         inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
      }
 }

public void showKeyboard(View view, boolean isForceToShow) {
      if (isForceToShow)
         inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
      else if (view != null)
           inputMethodManager.showSoftInput(view, 0);
}

/** 
 *
 *   Hide I Said!!!
 *
 */
public static boolean hideSoftKeyboard(@NonNull Activity activity) {
    View currentFocus = activity.getCurrentFocus();
    if (currentFocus == null) {
        currentFocus = activity.getWindow().getDecorView();
        if (currentFocus != null) {
            return getSoftInput(activity).hideSoftInputFromWindow(currentFocus.getWindowToken(), 0, null);
        }
    }
    return false;
}

public static boolean hideSoftKeyboard(@NonNull Context context) {
   if(Activity.class.isAssignableFrom(context.getClass())){
       return hideSoftKeyboard((Activity)context);
   }
   return false;
}

public static InputMethodManager getSoftInput(@NonNull Context context) {
    return (InputMethodManager) context.getSystemService(Activity.INPUT_METHOD_SERVICE);
}

我正在使用以下Kotlin Activity扩展：

/**
 * Hides soft keyboard if is open.
 */
fun Activity.hideKeyboard() {
    currentFocus?.windowToken?.let {
        (getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager?)
                ?.hideSoftInputFromWindow(it, InputMethodManager.HIDE_NOT_ALWAYS)
    }
}

/**
 * Shows soft keyboard and request focus to given view.
 */
fun Activity.showKeyboard(view: View) {
    view.requestFocus()
    currentFocus?.windowToken?.let {
        (getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager?)
                ?.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT)
    }
}

有时你只需要按回车键来折叠键盘在“编辑文本”框中指定属性

 android:imeOptions="actionDone" 

这将将Enter按钮更改为Done按钮，该按钮将关闭键盘。