Android的点击数，方法异常 [英] Android onlick-Method exception

问题描述

您好我收到以下异常，我不知道为什么：找不到在活动课android.view.ContextThemeWrapper为onclick处理方法checkPassword（视图）的视图类android.widget.Button ID为bPassword

Hello I am getting the following exception and I don't know why: Could not find a method checkPassword(View) in the activity class android.view.ContextThemeWrapper for onClick handler on view class android.widget.Button with id 'bPassword'

我使用的是Activtiy为对话框。用户必须在对话框中输入密码，如果它是正确的另一个活动应该叫。这是我的code：

I am using a Activtiy as Dialog. The user must type a password in the Dialog, if it is correct another activity should be called. Here is my code:

我的XML文件：

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="match_parent"
              android:layout_height="match_parent">

    <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:text="Enter your Password:"
            android:id="@+id/dText"/>
    <EditText
            android:layout_width="match_parent"
            android:paddingLeft="10dp"
            android:layout_height="wrap_content"
            android:inputType="textPassword"
            android:ems="10"
            android:id="@+id/ePassword"
            android:layout_marginLeft="-1dp"/>
    <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="New Button"
            android:id="@+id/bPassword"
            android:onClick="checkPassword" />


</LinearLayout>

我的Java类：

My Java Class:

package com.example.RemindMe;

import android.app.Activity;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;


public class DialogActivity extends Activity {

    private String password = "test";
    private EditText ePassword;
    private TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Dialog dialog = new Dialog(this);
        dialog.setContentView(R.layout.activity_dialog);
        dialog.setTitle("Note Activity is password protected");
        dialog.setCancelable(true);
        textView = (TextView) dialog.findViewById(R.id.dText);
        textView.setText("Message");

        dialog.show();


        dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
            public void onCancel(DialogInterface arg0){
                finish();
            }
        });

    }

    public void checkPassword(View view){
        switch (view.getId()){
            case R.id.bPassword:
                String pwEditText = ePassword.getText().toString();

                if(pwEditText.equals(password)){
                    //If password correct, start another activity
                startActivity (new Intent(getApplicationContext(), NoteActivity.class));
                } else {
                    textView.setText("Wrong Password, PLS Type it again");
                }
                break;
        }
    }
}

我知道密码不应该被用作明文等。这是仅用于测试目的。我planninng在共享$ P $粉煤散列和存储密码

I know that the password should not be used as a clear text and so on. This is only for testing purpose. I am planninng to hash and store the password in the sharedpref

推荐答案

为了让您的活动的外观对话框添加以下行＆LT;活性GT; 相应的活动在的manifest.xml 。

To give your Activity the appearance of a Dialog add the following line to the <activity> tag of the appropriate Activity in your manifest.xml.

android:theme="@android:style/Theme.Dialog"

然后就可以删除所有的对话框 code和它应该工作，因为你的的onClick 是在活动本身，而不是对话框。只是不要忘了添加的setContentView（...）在的onCreate（）。

then you can remove all of the dialog code and it should work since your onClick is in the Activity itself and not the Dialog. Just don't forget to add setContentView(...) in onCreate().

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