EditText setText未显示在对话框片段上 [英] EditText setText not displaying on a Dialog Fragment

问题描述

我是Android应用程序开发的新手，并且不知道如何调试它.所以我正在尝试在DialogFragment上执行EditText.setText.它在日志上打印出正确的字符串，但仍显示基于.xml文件的旧字符串(在此处输入项目".).有什么办法可以更新吗?

I'm kinda new to Android app development, and don't know how to debug this. So I'm trying to do EditText.setText on a DialogFragment. It prints out the right string on the log, but still showing the old string based on .xml file("Enter item here."). Is there any way to update it?

public class MyAlertDialogFragment extends DialogFragment{
public MyAlertDialogFragment() {}

public static MyAlertDialogFragment newInstance(String desc) {
    MyAlertDialogFragment frag = new MyAlertDialogFragment();
    Bundle args = new Bundle();
    args.putString("desc", desc);
    frag.setArguments(args);
    return frag;
}

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity());
    alertDialogBuilder.setView(R.layout.custom_dialog);
    alertDialogBuilder.setTitle("Edit to-do list");

    final View layout = View.inflate(MainActivity.getAppContext(), R.layout.custom_dialog, null);
    final EditText mEditText = (EditText) layout.findViewById(R.id.EditDesc);
    String desc = getArguments().getString("desc");
    mEditText.setText(desc);
    System.out.println("EditText is " + mEditText.getText().toString());

    alertDialogBuilder.setPositiveButton("OK",  new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // on success
            EditTodoFragment.EditTodoFragmentListener listener = (EditTodoFragment.EditTodoFragmentListener)getActivity();
            listener.onFinishEditDialog(mEditText.getText().toString());
        }
    });
    alertDialogBuilder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
        }
    });

    return alertDialogBuilder.create();
}

}

日志文件

07-06 21:04:20.738 4115-4115/com.example.light.todolist I/System.out: EditText is Doing grocery

该xml文件为:

The xml file is:

<TextView
    android:layout_width="238dp"
    android:layout_height="wrap_content"
    android:text="Edit Item Below:"
    android:id="@+id/EditTitle"
    android:layout_weight="0.04" />

<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/EditDesc"
    android:text="Enter item here.">
<requestFocus />
</EditText>

推荐答案

您不使用Dialog的布局视图，这样就看不到EditText上的文本.请按此处更改:

You don't use layout view for Dialog so that you can't see text on EditText. Please change as here:

 AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity());
    alertDialogBuilder.setTitle("Edit to-do list");

    final View layout = View.inflate(MainActivity.getAppContext(), R.layout.custom_dialog, null);
    alertDialogBuilder.setView(layout );

这篇关于EditText setText未显示在对话框片段上的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！