我正在关注本教程,我可以让它工作得很好,但是当我尝试更新 UI 以适应 android 4.2 中的新 Holo.Light 时,应用程序在启动时崩溃,我不知道为什么。
我一直在寻找一种更新 UI 的方法,但我无法让它工作。
我想知道是否有人可以帮助我?告诉我怎么做?给我一个你知道会起作用的链接吗?甚至自己做?
我得到这个错误日志:
11-20 09:50:39.523: I/dalvikvm(1460): threadid=3: reacting to signal 3
11-20 09:50:39.682: I/dalvikvm(1460): Wrote stack traces to '/data/anr/traces.txt'
11-20 09:50:39.892: I/dalvikvm(1460): threadid=3: reacting to signal 3
11-20 09:50:40.003: I/dalvikvm(1460): Wrote stack traces to '/data/anr/traces.txt'
11-20 09:50:40.102: D/AndroidRuntime(1460): Shutting down VM
11-20 09:50:40.102: W/dalvikvm(1460): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
11-20 09:50:40.132: E/AndroidRuntime(1460): FATAL EXCEPTION: main
11-20 09:50:40.132: E/AndroidRuntime(1460): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.androidhive.jsonparsing/com.androidhive.jsonparsing.AndroidJSONParsingActivity}: android.os.NetworkOnMainThreadException
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.app.ActivityThread.access$600(ActivityThread.java:123)
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.os.Handler.dispatchMessage(Handler.java:99)
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.os.Looper.loop(Looper.java:137)
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.app.ActivityThread.main(ActivityThread.java:4424)
11-20 09:50:40.132: E/AndroidRuntime(1460): at java.lang.reflect.Method.invokeNative(Native Method)
11-20 09:50:40.132: E/AndroidRuntime(1460): at java.lang.reflect.Method.invoke(Method.java:511)
11-20 09:50:40.132: E/AndroidRuntime(1460): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
11-20 09:50:40.132: E/AndroidRuntime(1460): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
11-20 09:50:40.132: E/AndroidRuntime(1460): at dalvik.system.NativeStart.main(Native Method)
11-20 09:50:40.132: E/AndroidRuntime(1460): Caused by: android.os.NetworkOnMainThreadException
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099)
11-20 09:50:40.132: E/AndroidRuntime(1460): at java.net.InetAddress.lookupHostByName(InetAddress.java:391)
11-20 09:50:40.132: E/AndroidRuntime(1460): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242)
11-20 09:50:40.132: E/AndroidRuntime(1460): at java.net.InetAddress.getAllByName(InetAddress.java:220)
11-20 09:50:40.132: E/AndroidRuntime(1460): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
11-20 09:50:40.132: E/AndroidRuntime(1460): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
11-20 09:50:40.132: E/AndroidRuntime(1460): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
11-20 09:50:40.132: E/AndroidRuntime(1460): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
11-20 09:50:40.132: E/AndroidRuntime(1460): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
11-20 09:50:40.132: E/AndroidRuntime(1460): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
11-20 09:50:40.132: E/AndroidRuntime(1460): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
11-20 09:50:40.132: E/AndroidRuntime(1460): at com.androidhive.jsonparsing.JSONParser.getJSONFromUrl(JSONParser.java:38)
11-20 09:50:40.132: E/AndroidRuntime(1460): at com.androidhive.jsonparsing.AndroidJSONParsingActivity.onCreate(AndroidJSONParsingActivity.java:53)
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.app.Activity.performCreate(Activity.java:4465)
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
11-20 09:50:40.132: E/AndroidRuntime(1460): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
11-20 09:50:40.132: E/AndroidRuntime(1460): ... 11 more
11-20 09:50:40.392: I/dalvikvm(1460): threadid=3: reacting to signal 3
11-20 09:50:40.412: I/dalvikvm(1460): Wrote stack traces to '/data/anr/traces.txt'
11-20 09:50:40.791: I/dalvikvm(1460): threadid=3: reacting to signal 3
11-20 09:50:40.962: I/dalvikvm(1460): Wrote stack traces to '/data/anr/traces.txt'