下面是链接http://developer.android.com/training/basics/network-ops/xml.html,示例代码在下载的右边。
我正在使用wi连接,一些ppl建议禁用局域网卡,我这样做了,仍然例外.与read相关的所有项目都不适用于我的模拟器.。
它提示我这个错误
10-11 08:41:43.169: E/AndroidRuntime(825): FATAL EXCEPTION: main
10-11 08:41:43.169: E/AndroidRuntime(825): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.android.networkusage/com.example.networkusage.NetworkActivity}: java.lang.ClassNotFoundException: com.example.networkusage.NetworkActivity
10-11 08:41:43.169: E/AndroidRuntime(825): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1983)
10-11 08:41:43.169: E/AndroidRuntime(825): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
10-11 08:41:43.169: E/AndroidRuntime(825): at android.app.ActivityThread.access$600(ActivityThread.java:130)
10-11 08:41:43.169: E/AndroidRuntime(825): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
10-11 08:41:43.169: E/AndroidRuntime(825): at android.os.Handler.dispatchMessage(Handler.java:99)
10-11 08:41:43.169: E/AndroidRuntime(825): at android.os.Looper.loop(Looper.java:137)
10-11 08:41:43.169: E/AndroidRuntime(825): at android.app.ActivityThread.main(ActivityThread.java:4745)
10-11 08:41:43.169: E/AndroidRuntime(825): at java.lang.reflect.Method.invokeNative(Native Method)
10-11 08:41:43.169: E/AndroidRuntime(825): at java.lang.reflect.Method.invoke(Method.java:511)
10-11 08:41:43.169: E/AndroidRuntime(825): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
10-11 08:41:43.169: E/AndroidRuntime(825): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-11 08:41:43.169: E/AndroidRuntime(825): at dalvik.system.NativeStart.main(Native Method)
10-11 08:41:43.169: E/AndroidRuntime(825): Caused by: java.lang.ClassNotFoundException: com.example.networkusage.NetworkActivity
10-11 08:41:43.169: E/AndroidRuntime(825): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
10-11 08:41:43.169: E/AndroidRuntime(825): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
10-11 08:41:43.169: E/AndroidRuntime(825): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
10-11 08:41:43.169: E/AndroidRuntime(825): at android.app.Instrumentation.newActivity(Instrumentation.java:1053)
10-11 08:41:43.169: E/AndroidRuntime(825): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1974)
10-11 08:41:43.169: E/AndroidRuntime(825): ... 11 more
发布于 2012-10-11 09:01:18
编辑:-我没有加载该示例并将其导入Eclipse。为了让它运行,我必须编辑android清单,以便它读取。
<activity
<!-- note removed all but simple name from android:name -->
android:name="NetworkActivity"
android:label="@string/app_name" >
<!-- more stuff -->
</activity>
似乎需要将com.example.networkusage.NetworkActivity添加到AndroidManifest中。
<activity
android:name="com.example.networkusage.NetworkActivity"
</activity>
Google的开发人员文档也有一个问题,您的清单不应该有这个问题。
<?xml version="1.0" encoding="utf-8"?>
在最上面。至少,如果包括Eclipse,Eclipse总是会为我抱怨。如果您从文档中复制了这一行内容,那么它就值得删除。我不认为这是基于特例发布的问题,但是.
https://stackoverflow.com/questions/12835558
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