获取编辑文本错误 NULLPOINTER 为什么的值? [英] Getting values of edit text error NULLPOINTER why?

问题描述

我试图从对话框中显示的编辑字段的值中获取文本并将其保存在一个变量中.

I'm trying to get text from values of edit field showed on a dialog and save it in a variable.

final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.dialg);
dialog.setTitle("Title...");
dialog.show();
Button dialogButtonCancel = (Button) dialog.findViewById(R.id.cancel);
// if button is clicked, close the custom dialog
dialogButtonCancel.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        dialog.dismiss();}});
Button dialogButtonOK = (Button) dialog.findViewById(R.id.OK);
//***************************************************************************
dialogButtonOK.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        EditText edt1=(EditText)findViewById(R.id.EditTextNom);
        nom = edt1.getText().toString();
        EditText edt2=(EditText)findViewById(R.id.editTextDescription);
        description = edt2.getText().toString();
        dialog.dismiss();
    }});

推荐答案

试试

 EditText edt1=(EditText)dialog.findViewById(R.id.EditTextNom);

您需要查看为 Dialog 膨胀的布局.现在它正在查看为 Activity 膨胀的那个，显然，那些 View 不存在于那个 layout 中.

you need to look in the layout that is inflated for the Dialog. Right now it is looking in the one that was inflated for the Activity and, obviously, those Views don't exist in that layout.

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