如何在片段中打开键盘

Question

片段启动时如何打开键盘？我已经尝试过此代码：

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    view =inflater.inflate(R.layout.mylayout,container,false);
    TextView TVLarghezza = (TextView) view.findViewById(R.id.larghezza);
    TVLarghezza.requestFocus();
    InputMethodManager imgr = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
    imgr.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
    return view;
}

但是没用。我必须在启动时打开键盘。

Answer 1

可能问题是，在onCreateView中，视图还没有出现在屏幕上。

试试这个：

final TextView TVLarghezza = (TextView) view.findViewById(R.id.larghezza);
TVLarghezza.post(new Runnable() {
        @Override
        public void run() {
            TVLarghezza.requestFocus();
            InputMethodManager imgr = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
            imgr.showSoftInput(TVLarghezza, InputMethodManager.SHOW_IMPLICIT);
            }
        });

Answer 2

用于显示键盘使用：

InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,0);

隐藏键盘用途：

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

已更新
对于片段：

imgr.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);

Answer 3

有同样的问题，尝试使用postDelayed

    view.postDelayed(new Runnable() {
        @Override
        public void run() {
            InputMethodManager keyboard = (InputMethodManager) mAppContext
                    .getSystemService(Context.INPUT_METHOD_SERVICE);
            keyboard.showSoftInput(view, 0);
        }
    }, 100);

如何在片段中打开键盘

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