android - 如何在 fragment 中打开键盘

Question

如何在 fragment 开始时打开键盘？我已经尝试过这段代码:

@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;
}

但它不起作用。我必须在启动时打开键盘。

Answer 1

用于显示键盘使用:

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

用于隐藏键盘使用:

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

已更新
对于 fragment :

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