Question

我目前正在尝试从EditText字段中获取字符串。

这是我的代码：

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;

public class FirstRunDialog extends DialogFragment {

    public static final String DEBUG_TAG = FirstRunDialog.class.getSimpleName();
    private static final String PREFS_NAME = "MyPrefsFile";
    private LayoutInflater inflater;
    private View dialogView;
    private EditText input;
    private DialogInterface.OnClickListener listener;
    private SharedPreferences settings;
    private SharedPreferences.Editor editor;

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        if (activity instanceof DialogInterface.OnClickListener) {
            listener = (DialogInterface.OnClickListener) activity;
        }
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {

        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setTitle(R.string.app_name);
        builder.setView(R.layout.first_run_dialog);
        builder.setCancelable(false);
        builder.setPositiveButton("Key-Testen", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int whichButton) {
                settings = getActivity().getSharedPreferences(PREFS_NAME, 0);
                dialogView = getActivity().getLayoutInflater().inflate(R.layout.first_run_dialog, null);
                input = (EditText) dialogView.findViewById(R.id.editText);
                editor = settings.edit();
                editor.putString("apiKey", input.getText().toString());
                editor.commit();
                Log.d(DEBUG_TAG, "apiKey Input: " + input.getText().toString());
                Log.d(DEBUG_TAG, "apiKey: " + settings.getString("apiKey", ""));
                dialog.dismiss();
            }
        });
        builder.setNegativeButton("Key-Erstellen", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int whichButton) {
                //Open Browser, then go to: https://account.arena.net/applications
                Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("https://account.arena.net/applications"));
                startActivity(browserIntent);
            }
        });
        return builder.create();
    }

}

此代码无效！根据答案如何从EditText中检索文本我没有做错任何事。 EditText位于AlertFragment中。

Log.d（...）的当前输出是（和第二个相同）：

apiKey输入：

提前谢谢。

Answer 1

按下按钮时不要给新视图充气尝试使用getDialog()：

builder.setPositiveButton("Key-Testen", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            settings = getActivity().getSharedPreferences(PREFS_NAME, 0);
            input = (EditText) getDialog().findViewById(R.id.editText);
            editor = settings.edit();
            editor.putString("apiKey", input.getText().toString());
            editor.commit();
            Log.d(DEBUG_TAG, "apiKey Input: " + input.getText().toString());
            Log.d(DEBUG_TAG, "apiKey: " + settings.getString("apiKey", ""));
            dialog.dismiss();
        }
    });

Answer 2

试试这个

从onclick中取出这一行

input = (EditText) dialogView.findViewById(R.id.editText);

并使视图膨胀

LayoutInflater inflater = this.getLayoutInflater();
View dialogView = inflater.inflate(R.layout.alert_label_editor, null);
builder .setView(dialogView);

EditText input = (EditText) dialogView.findViewById(R.id.editText);

然后在onclick中输入.gettext（）。tostring，对不起我的英文我希望能帮助

EditText中的getText（）无效

2 个答案: