我同意raukodraug的观点，在swithview中使用时，你必须像这样请求/清除焦点:

    final ViewSwitcher viewSwitcher = (ViewSwitcher) findViewById(R.id.viewSwitcher);
    final View btn = viewSwitcher.findViewById(R.id.address_btn);
    final View title = viewSwitcher.findViewById(R.id.address_value);

    title.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            viewSwitcher.showPrevious();
            btn.requestFocus();
            InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.showSoftInput(btn, InputMethodManager.SHOW_IMPLICIT);
        }
    });

    // EditText affiche le titre evenement click
    btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            btn.clearFocus();
            viewSwitcher.showNext();
            InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.hideSoftInputFromWindow(btn.getWindowToken(), 0);
            // Enregistre l'adresse.
            addAddress(view);
        }
    });

的问候。

芬兰湾的科特林:

val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager

fun showKeyboard() {
        imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0)
    }

fun hideKeyboard() {
        imm.hideSoftInputFromWindow(phoneNoInputTxt.windowToken, 0);
    }

那你想怎么叫就怎么叫!

在Activity的onResume()部分，你可以调用方法bringKeyboard();

 onResume() {
     EditText yourEditText= (EditText) findViewById(R.id.yourEditText);
     bringKeyboard(yourEditText);
 }


  protected boolean bringKeyboard(EditText view) {
    if (view == null) {
        return false;
    }
    try {
      // Depending if edittext has some pre-filled values you can decide whether to bring up soft keyboard or not
        String value = view.getText().toString();
        if (value == null) {
            InputMethodManager imm = (InputMethodManager)context.getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
            return true;
        }
    } catch (Exception e) {
        Log.e(TAG, "decideFocus. Exception", e);
    }
    return false;
  }

我做了这个帮助课。 只需要传递context和你想要聚焦的View show keyboard和hide keyboard。 我希望这能有所帮助。

public class FocusKeyboardHelper {

private View view;
private Context context;
private InputMethodManager imm;

public FocusKeyboardHelper(Context context, View view){
    this.view = view;
    this.context = context;
    imm = (InputMethodManager) context.getSystemService(context.INPUT_METHOD_SERVICE);
}

public void focusAndShowKeyboard(){

    view.requestFocus();
    imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);

}

public void hideKeyBoard(){
    imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}

}

信不信由你，当我发现活动动画可以禁用软键盘时，我的软键盘问题得到了解决。当你用

i.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);

and

overridePendingTransition(0, 0);

它可以隐藏软键盘，没有办法显示它。

对于Kotlin，只需使用以下扩展:

fun EditText.showKeyboard() {
    val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
    imm.showSoftInput(this, InputMethodManager.SHOW_IMPLICIT)
}

fun EditText.hideKeyboard() {
    val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
    imm.hideSoftInputFromWindow(this.windowToken, 0)
}