Question

我是Android的新手，但对Java来说还不错，更喜欢Netbeans和Eclipse。我试图让HelloAndroid应用程序运行，但没有成功。

package com.ex.helloandroid;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class HelloAndroid extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
   TextView tv = new TextView(this);
   tv.setText("Hello, Android");
   setContentView(tv);
}
}

清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.ex.helloandroid"
  android:versionCode="1"
  android:versionName="1.0">
<application android:label="@string/app_name" >
    <activity android:name="HelloAndroid"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>
</manifest>

这个编译好了，并在模拟器和我的手机中安装OK。但是当我尝试运行它时，我得到了可怕的“应用程序HelloAndroid（进程com.ex.helloandroid）意外停止。请再试一次。”

这是logcat：

I/ActivityManager(   70): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.ex.helloandroid/.HelloAndroid }
I/ActivityManager(   70): Start proc com.ex.helloandroid for activity com.ex.helloandroid/.HelloAndroid: pid=691 uid=10036 gids={1015}
D/AndroidRuntime(  691): Shutting down VM
W/dalvikvm(  691): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
E/AndroidRuntime(  691): FATAL EXCEPTION: main
E/AndroidRuntime(  691): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.ex.helloandroid/com.ex.helloandroid.HelloAndroid}: java.lang.ClassNotFoundException: com.ex.helloandroid.HelloAndroid in loader dalvik.system.PathClassLoader[/dat
a/app/com.ex.helloandroid-1.apk]
E/AndroidRuntime(  691):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)
E/AndroidRuntime(  691):        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
E/AndroidRuntime(  691):        at android.app.ActivityThread.access$2300(ActivityThread.java:125)
E/AndroidRuntime(  691):        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
E/AndroidRuntime(  691):        at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(  691):        at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(  691):        at android.app.ActivityThread.main(ActivityThread.java:4627)
E/AndroidRuntime(  691):        at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(  691):        at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime(  691):        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
E/AndroidRuntime(  691):        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
E/AndroidRuntime(  691):        at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime(  691): Caused by: java.lang.ClassNotFoundException: com.ex.helloandroid.HelloAndroid in loader dalvik.system.PathC
lassLoader[/data/app/com.ex.helloandroid-1.apk]
E/AndroidRuntime(  691):        at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
E/AndroidRuntime(  691):        at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
E/AndroidRuntime(  691):        at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
E/AndroidRuntime(  691):        at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
E/AndroidRuntime(  691):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
E/AndroidRuntime(  691):        ... 11 more
W/ActivityManager(   70):   Force finishing activity com.ex.helloandroid/.HelloAndroid
W/ActivityManager(   70): Activity pause timeout for HistoryRecord{45422d20 com.ex.helloandroid/.HelloAndroid}
W/ActivityManager(   70): Activity destroy timeout for HistoryRecord{45422d20 com.ex.helloandroid/.HelloAndroid}
I/Process (  691): Sending signal. PID: 691 SIG: 9
I/ActivityManager(   70): Process com.ex.helloandroid (pid 691) has died.
W/InputManagerService(   70): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Prox
y@451f4560

我花了好几天努力完成这项工作......安装了Netbeans的新副本，重新安装了NBAndroid，重新安装了Android SDK，Google搜索并使用了代码。有人可以帮忙吗？

由于

谢

Answer 1

该项目似乎运行良好。我使用了你的Activity和manifest，没有任何问题。尝试清理您的项目。转到项目 - ＆gt;清理

Answer 2

setContentView(R.layout.main);

放置你的main.xml。使用DroidDraw创建main.xml并调用setContentView(R.layout.main);而不是setContentView(tv);

Android＆amp; Netbeans：“意外停止”

2 个答案: