嗨我编写了一个简单的android应用程序,其中包含两个xml页面,其中一个具有一个图像按钮,当它被单击时,该图像按钮被用来打开第二个xml页面。该代码返回没有错误,并运行良好,但当我点击Android模拟器中的按钮它崩溃,并要求我强制关闭。这里是我的工作代码:Android应用程序崩溃按钮单击
第一项活动:
package com.android.Train;
import com.android.TrainMenu.MenuActivity;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
public class TrainActivity extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void goMenu(View v)
{
Intent myIntent = new Intent(this, MenuActivity.class);
startActivity(myIntent);
}
}
第一个XML文件:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageButton
android:id="@+id/enterButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/button_enter"
android:clickable="true"
android:onClick="goMenu" />
</LinearLayout>
次活动:
package com.android.TrainMenu;
import android.app.Activity;
import android.os.Bundle;
import com.android.Train.R;
public class MenuActivity extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.menu);
}
}
二XML文件:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</RelativeLayout>
关于为什么会崩溃的任何想法?
在此先感谢
我又跑了,这里是logcat的文件
01-26 14:21:37.784: D/AndroidRuntime(287): Shutting down VM
01-26 14:21:37.784: W/dalvikvm(287): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
01-26 14:21:37.815: E/AndroidRuntime(287): FATAL EXCEPTION: main
01-26 14:21:37.815: E/AndroidRuntime(287): java.lang.IllegalStateException: Could not execute method of the activity
01-26 14:21:37.815: E/AndroidRuntime(287): at android.view.View$1.onClick(View.java:2072)
01-26 14:21:37.815: E/AndroidRuntime(287): at android.view.View.performClick(View.java:2408)
01-26 14:21:37.815: E/AndroidRuntime(287): at android.view.View$PerformClick.run(View.java:8816)
01-26 14:21:37.815: E/AndroidRuntime(287): at android.os.Handler.handleCallback(Handler.java:587)
01-26 14:21:37.815: E/AndroidRuntime(287): at android.os.Handler.dispatchMessage(Handler.java:92)
01-26 14:21:37.815: E/AndroidRuntime(287): at android.os.Looper.loop(Looper.java:123)
01-26 14:21:37.815: E/AndroidRuntime(287): at android.app.ActivityThread.main(ActivityThread.java:4627)
01-26 14:21:37.815: E/AndroidRuntime(287): at java.lang.reflect.Method.invokeNative(Native Method)
01-26 14:21:37.815: E/AndroidRuntime(287): at java.lang.reflect.Method.invoke(Method.java:521)
01-26 14:21:37.815: E/AndroidRuntime(287): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
01-26 14:21:37.815: E/AndroidRuntime(287): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
01-26 14:21:37.815: E/AndroidRuntime(287): at dalvik.system.NativeStart.main(Native Method)
01-26 14:21:37.815: E/AndroidRuntime(287): Caused by: java.lang.reflect.InvocationTargetException
01-26 14:21:37.815: E/AndroidRuntime(287): at com.android.Train.TrainActivity.goMenu(TrainActivity.java:23)
01-26 14:21:37.815: E/AndroidRuntime(287): at java.lang.reflect.Method.invokeNative(Native Method)
01-26 14:21:37.815: E/AndroidRuntime(287): at java.lang.reflect.Method.invoke(Method.java:521)
01-26 14:21:37.815: E/AndroidRuntime(287): at android.view.View$1.onClick(View.java:2067)
01-26 14:21:37.815: E/AndroidRuntime(287): ... 11 more
01-26 14:21:37.815: E/AndroidRuntime(287): Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.android.Train/com.android.TrainMenu.MenuActivity}; have you declared this activity in your AndroidManifest.xml?
01-26 14:21:37.815: E/AndroidRuntime(287): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1404)
01-26 14:21:37.815: E/AndroidRuntime(287): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1378)
01-26 14:21:37.815: E/AndroidRuntime(287): at android.app.Activity.startActivityForResult(Activity.java:2817)
01-26 14:21:37.815: E/AndroidRuntime(287): at android.app.Activity.startActivity(Activity.java:2923)
01-26 14:21:37.815: E/AndroidRuntime(287): ... 15 more
的Android的Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.android.Train"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="7" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:label="@string/app_name"
android:name=".TrainActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MenuActivity"
android:label="@string/app_name" />
</application>
</manifest>
这里有什么错误?请在这里输入错误信息 –
您是否在您的Manifest文件中声明了第二个活动? – DeeV
你可以添加logcat的消息吗?你也可能想尝试添加一些东西到你的第二个布局 –