我已经开发了一个Android，现在我想在我的真实手机上测试它，这个应用程序有一个用户注册的网络服务。并登录，它还有一个托管我的数据库的 xampp 服务器和一个我从应用程序访问的论坛。
有人能帮我弄清楚为什么我不能在我的设备中使用它吗
这是我的日志猫
03-10 17:54:56.360: E/SensorManager(2377): thread start
03-10 17:54:56.555: E/SpannableStringBuilder(2377): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
03-10 17:54:56.555: E/SpannableStringBuilder(2377): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
03-10 17:56:06.415: E/SpannableStringBuilder(2377): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
03-10 17:56:06.415: E/SpannableStringBuilder(2377): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
03-10 17:56:12.920: E/AndroidRuntime(2377): FATAL EXCEPTION: main
03-10 17:56:12.920: E/AndroidRuntime(2377): android.os.NetworkOnMainThreadException
03-10 17:56:12.920: E/AndroidRuntime(2377): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1118)
03-10 17:56:12.920: E/AndroidRuntime(2377): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
03-10 17:56:12.920: E/AndroidRuntime(2377): at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
03-10 17:56:12.920: E/AndroidRuntime(2377): at libcore.io.IoBridge.connect(IoBridge.java:112)
03-10 17:56:12.920: E/AndroidRuntime(2377): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
03-10 17:56:12.920: E/AndroidRuntime(2377): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
03-10 17:56:12.920: E/AndroidRuntime(2377): at java.net.Socket.connect(Socket.java:842)
03-10 17:56:12.920: E/AndroidRuntime(2377): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
03-10 17:56:12.920: E/AndroidRuntime(2377): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
03-10 17:56:12.920: E/AndroidRuntime(2377): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
03-10 17:56:12.920: E/AndroidRuntime(2377): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
03-10 17:56:12.920: E/AndroidRuntime(2377): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
03-10 17:56:12.920: E/AndroidRuntime(2377): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:670)
03-10 17:56:12.920: E/AndroidRuntime(2377): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:509)
03-10 17:56:12.920: E/AndroidRuntime(2377): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
03-10 17:56:12.920: E/AndroidRuntime(2377): at com.mohammed.watzIslam.library.JSONParser.getJSONFromUrl(JSONParser.java:44)
03-10 17:56:12.920: E/AndroidRuntime(2377): at com.mohammed.watzIslam.library.UserFunctions.loginUser(UserFunctions.java:39)
03-10 17:56:12.920: E/AndroidRuntime(2377): at com.mohammed.watzIslam.LoginActivity$1.onClick(LoginActivity.java:59)
03-10 17:56:12.920: E/AndroidRuntime(2377): at android.view.View.performClick(View.java:4211)
03-10 17:56:12.920: E/AndroidRuntime(2377): at android.view.View$PerformClick.run(View.java:17267)
03-10 17:56:12.920: E/AndroidRuntime(2377): at android.os.Handler.handleCallback(Handler.java:615)
03-10 17:56:12.920: E/AndroidRuntime(2377): at android.os.Handler.dispatchMessage(Handler.java:92)
03-10 17:56:12.920: E/AndroidRuntime(2377): at android.os.Looper.loop(Looper.java:137)
03-10 17:56:12.920: E/AndroidRuntime(2377): at android.app.ActivityThread.main(ActivityThread.java:4898)
03-10 17:56:12.920: E/AndroidRuntime(2377): at java.lang.reflect.Method.invokeNative(Native Method)
03-10 17:56:12.920: E/AndroidRuntime(2377): at java.lang.reflect.Method.invoke(Method.java:511)
03-10 17:56:12.920: E/AndroidRuntime(2377): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
03-10 17:56:12.920: E/AndroidRuntime(2377): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
03-10 17:56:12.920: E/AndroidRuntime(2377): at dalvik.system.NativeStart.main(Native Method)
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