android - 隐藏以在 DialogFragment 中显示和隐藏键盘

Question

在我的对话框 fragment 中，我可以使用

显示键盘

getDialog().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT STATE_VISIBLE);

但我无法在 dismiss 上隐藏它。

我试过了

getDialog().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);

和

getDialog().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

两者都不起作用。

我还尝试使用

显示和隐藏键盘

InputMethodManager inputManager = (InputMethodManager)context.getSystemService(Context.INPUT_METHOD_SERVICE);
        inputManager.toggleSoftInput(0, 0); 

和

InputMethodManager inputManager = (InputMethodManager)context.getSystemService(Context.INPUT_METHOD_SERVICE);
        inputManager.hideSoftInputFromWindow(view.getWindowToken(), 0);

但是这些无法显示或隐藏键盘。

 public static class MyDialogFragment extends DialogFragment
    {
        @Nullable @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
        {
            return inflater.inflate(R.layout.my_input_dialog, container, false);
        }

        @Override
        public void onViewCreated(View v, Bundle savedInstanceState)
        {
            super.onViewCreated(v, savedInstanceState);

            final EditText editText = (EditText)v.findViewById(R.id.input);
            // this line below is able to show the keyboard 
            getDialog().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE); 
            Button add = (Button)v.findViewById(R.id.add_btn);
            add.setOnClickListener(new View.OnClickListener()
            {
                @Override
                public void onClick(View v)
                {
                    // other code not shown
                    dismiss();
                }
            });
            Button cancel = (Button)v.findViewById(R.id.cancel_btn);
            cancelButton.setOnClickListener(new View.OnClickListener()
            {
                @Override
                public void onClick(View v)
                {
                    dismiss();
                }
            });
        }

        @Override
        public void onDismiss(DialogInterface dialog)
        {
            //this line below does NOT work, it does not hide the keyboard
            getDialog().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
            super.onDismiss(dialog);
        }
    }

注意:我已阅读这些 stackoverflow 帖子并尝试了建议的解决方案但无济于事:

1. How to hide the onscreen keyboard when a DialogFragment is canceled by the setCanceledOnTouchOutside event
2. Close/hide the Android Soft Keyboard

Answer 1

解决方案结果是以下组合。在 DialogFragment 中显示键盘:

    @Override
    public void onResume()
    {
        super.onResume();
        editText.post(new Runnable()
        {
            @Override
            public void run()
            {
                editText.requestFocus();
                InputMethodManager imm =
                    (InputMethodManager)editText.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
                if (imm != null)
                    imm.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT);
            }
        });
    }

要隐藏它，使用@Shekhar 上面的解决方案

    @Override
    public void onDismiss(DialogInterface dialog)
    {
        InputMethodManager imm =
            (InputMethodManager)editText.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
        if (imm.isActive())
            imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);

        super.onDismiss(dialog);
    }