Java 该按钮在android应用程序中不起作用

我正在从Newboston视频学习android，我被其中一个视频卡住了， 我有一些按钮，当点击这些按钮时，一些操作应该被打开，但它不起作用，按钮没有任何响应，也没有任何崩溃， 我找不到任何问题来解决，此按钮是Data.java中的开始和开始按钮：

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.ehsan.myproject"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

    <uses-permission android:name="android.permission.SET_WALLPAPER" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".Splash"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".Menu"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="com.ehsan.myproject.MENU" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".Prefs"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="com.ehsan.myproject.PREFS" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".AboutUs"
            android:label="@string/app_name"
            android:theme="@android:style/Theme.Dialog" >
            <intent-filter>
                <action android:name="com.ehsan.myproject.ABOUTUS" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="com.ehsan.myproject.MAINACTIVITY" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".TextPlay"
            android:label="@string/app_name" >
        </activity>
        <activity
            android:name=".Email"
            android:label="@string/app_name" >
        </activity>
        <activity
            android:name=".Camera"
            android:label="@string/app_name"
            android:theme="@drawable/url" >
        </activity>
        <activity
            android:name=".Data"
            android:label="@string/app_name"
            android:theme="@drawable/url" >
            <intent-filter>
                <action android:name="com.ehsan.myproject.DATA" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".OpenedClass"
            android:label="@string/app_name"
            android:theme="@drawable/url" >
            <intent-filter>
                <action android:name="com.ehsan.myproject.OPENEDCLASS" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
    </application>

</manifest>

OpenedClass.java

package com.ehsan.myproject;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.RadioGroup;

public class OpenedClass extends Activity implements OnClickListener,
        OnCheckedChangeListener {

    TextView question, text;
    RadioGroup selectionList;
    Button returnData;
    String gotBread, sendData;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.send);
        initialize();
        Bundle getBasket = getIntent().getExtras();
        if (getBasket != null) {
            gotBread = getBasket.getString("i am hungry");
            question.setText(gotBread);
        }
    }

    private void initialize() {
        // TODO Auto-generated method stub
        question = (TextView) findViewById(R.id.tvQuestion);
        text = (TextView) findViewById(R.id.tvText);
        returnData = (Button) findViewById(R.id.bReturn);
        selectionList = (RadioGroup) findViewById(R.id.rgAnswers);
        returnData.setOnClickListener(this);
        selectionList.setOnCheckedChangeListener((android.widget.RadioGroup.OnCheckedChangeListener) this);
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        Intent person = new Intent();
        Bundle backPack = new Bundle();
        backPack.putString("answer", sendData);
        person.putExtras(backPack);
        setResult(RESULT_OK, person);
        finish();
    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        // TODO Auto-generated method stub
        switch (selectionList.getCheckedRadioButtonId()) {
        case R.id.rCrazy:
            sendData = "probably right!";
            break;
        case R.id.rSexy:
            sendData = "definitely right!";
            break;
        case R.id.rBoth:
            sendData = "spot on!";
            break;
        }
        text.setText(sendData);
    }

}

现在我添加了start.setOnClickListenerthis；和startFor.setOnClickListenerthis；但当我单击“开始”或“启动”按钮时，应用程序崩溃。 帮我找到解决办法

logcat错误

    08-09 08:05:28.927: E/AndroidRuntime(1793): FATAL EXCEPTION: main
    08-09 08:05:28.927: E/AndroidRuntime(1793): Process: com.ehsan.myproject, PID: 1793
    08-09 08:05:28.927: E/AndroidRuntime(1793): java.lang.RuntimeException: Unable to instantiate application android.app.Application: java.lang.IllegalStateException: Unable to get package info for com.ehsan.myproject; is package not installed?
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at android.app.LoadedApk.makeApplication(LoadedApk.java:516)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4317)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at android.app.ActivityThread.access$1500(ActivityThread.java:135)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at android.os.Handler.dispatchMessage(Handler.java:102)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at android.os.Looper.loop(Looper.java:136)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at android.app.ActivityThread.main(ActivityThread.java:5017)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at java.lang.reflect.Method.invokeNative(Native Method)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at java.lang.reflect.Method.invoke(Method.java:515)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at dalvik.system.NativeStart.main(Native Method)
    08-09 08:05:28.927: E/AndroidRuntime(1793): Caused by: java.lang.IllegalStateException: Unable to get package info for com.ehsan.myproject; is package not installed?
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at android.app.LoadedApk.initializeJavaContextClassLoader(LoadedApk.java:376)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at android.app.LoadedApk.getClassLoader(LoadedApk.java:329)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     at android.app.LoadedApk.makeApplication(LoadedApk.java:508)
    08-09 08:05:28.927: E/AndroidRuntime(1793):     ... 11 more


08-09 08:08:01.527: E/AndroidRuntime(1827): FATAL EXCEPTION: main
08-09 08:08:01.527: E/AndroidRuntime(1827): Process: com.ehsan.myproject, PID: 1827
08-09 08:08:01.527: E/AndroidRuntime(1827): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ehsan.myproject/com.ehsan.myproject.OpenedClass}: java.lang.ClassCastException: com.ehsan.myproject.OpenedClass cannot be cast to android.widget.RadioGroup$OnCheckedChangeListener
08-09 08:08:01.527: E/AndroidRuntime(1827):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at android.app.ActivityThread.access$800(ActivityThread.java:135)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at android.os.Handler.dispatchMessage(Handler.java:102)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at android.os.Looper.loop(Looper.java:136)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at android.app.ActivityThread.main(ActivityThread.java:5017)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at java.lang.reflect.Method.invokeNative(Native Method)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at java.lang.reflect.Method.invoke(Method.java:515)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at dalvik.system.NativeStart.main(Native Method)
08-09 08:08:01.527: E/AndroidRuntime(1827): Caused by: java.lang.ClassCastException: com.ehsan.myproject.OpenedClass cannot be cast to android.widget.RadioGroup$OnCheckedChangeListener
08-09 08:08:01.527: E/AndroidRuntime(1827):     at com.ehsan.myproject.OpenedClass.initialize(OpenedClass.java:43)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at com.ehsan.myproject.OpenedClass.onCreate(OpenedClass.java:28)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at android.app.Activity.performCreate(Activity.java:5231)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
08-09 08:08:01.527: E/AndroidRuntime(1827):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
08-09 08:08:01.527: E/AndroidRuntime(1827):     ... 11 more


08-09 08:11:13.597: E/AndroidRuntime(1922): FATAL EXCEPTION: main
08-09 08:11:13.597: E/AndroidRuntime(1922): Process: com.ehsan.myproject, PID: 1922
08-09 08:11:13.597: E/AndroidRuntime(1922): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ehsan.myproject/com.ehsan.myproject.OpenedClass}: java.lang.ClassCastException: com.ehsan.myproject.OpenedClass cannot be cast to android.widget.RadioGroup$OnCheckedChangeListener
08-09 08:11:13.597: E/AndroidRuntime(1922):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at android.app.ActivityThread.access$800(ActivityThread.java:135)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at android.os.Handler.dispatchMessage(Handler.java:102)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at android.os.Looper.loop(Looper.java:136)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at android.app.ActivityThread.main(ActivityThread.java:5017)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at java.lang.reflect.Method.invokeNative(Native Method)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at java.lang.reflect.Method.invoke(Method.java:515)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at dalvik.system.NativeStart.main(Native Method)
08-09 08:11:13.597: E/AndroidRuntime(1922): Caused by: java.lang.ClassCastException: com.ehsan.myproject.OpenedClass cannot be cast to android.widget.RadioGroup$OnCheckedChangeListener
08-09 08:11:13.597: E/AndroidRuntime(1922):     at com.ehsan.myproject.OpenedClass.initialize(OpenedClass.java:43)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at com.ehsan.myproject.OpenedClass.onCreate(OpenedClass.java:28)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at android.app.Activity.performCreate(Activity.java:5231)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
08-09 08:11:13.597: E/AndroidRuntime(1922):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
08-09 08:11:13.597: E/AndroidRuntime(1922):     ... 11 more

试试这个

初始化ClickListener，如start.setOnClickListenerthis；按钮

编辑

改变这个

selectionList.setOnCheckedChangeListener((android.widget.RadioGroup.OnCheckedChangeListener) this);

到

---

post ur xml plz->send and geti现在就完成了，但当我单击“开始”或“开始”按钮时，应用程序崩溃。@user3671992查看我的编辑。卸载您的应用程序，然后重新安装。

private void initialize() {
    // TODO Auto-generated method stub
    start = (Button) findViewById(R.id.bSA);
    startFor = (Button) findViewById(R.id.bSAFR);
    sendET = (EditText) findViewById(R.id.etSend);
    gotAnswer = (TextView) findViewById(R.id.tvGot);
    start.setOnClickListener(this);
    startFor.setOnClickListener(this);
}

selectionList.setOnCheckedChangeListener((android.widget.RadioGroup.OnCheckedChangeListener) this);

selectionList.setOnCheckedChangeListener(this);