在自定义对话框中设置textview [英] set textview in custom dialog

问题描述

我创建了一个自定义对话框，但是无法从Java设置对话框布局中的文本视图中的文本，并且程序崩溃。我的错误是什么？

I have created a custom dialog but I cannot set a text into the textview that is in the dialog layout from java and my program crashes. what is my mistake?

public class Total_CBC extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.total_cbc);
    final TextView RBC_T = (TextView) findViewById(R.id.total_cbc_text_rbc);

    Button RBC_B = (Button) findViewById(R.id.total_cbc_btn_rbc);

    //

    RBC_B.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            showCustomDialog(RBC_T);
        }
    });
}


protected void showCustomDialog(final TextView _RBC_T) {
    final Dialog dialog = new Dialog(Total_CBC.this);
    dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
    dialog.setContentView(R.layout.dialog_edit);
    final EditText editText = (EditText) dialog.findViewById(R.id.dialog_edit_edittext);
    Button button = (Button) dialog.findViewById(R.id.dialog_edit_btn);
    TextView titel = (TextView) findViewById(R.id.dialog_edit_text_title);
    titel.setText("RBC");
    button.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            _RBC_T.setText(editText.getText().toString());
            dialog.dismiss();
        }
    });
    dialog.show();
}

}时，我取消了该行程序的工作，但我需要设置文本

} when I deleat this line program work but i need to set text

titel.setText("RBC");

推荐答案

更改

 TextView titel = (TextView) findViewById(R.id.dialog_edit_text_title);

至

 TextView titel = (TextView) dialog.findViewById(R.id.dialog_edit_text_title);

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