在Android清單文件中添加uses-sdk字段會導致崩潰

Question

由於某些原因，在Android清單文件中添加uses-sdk字段會導致崩潰。我以前沒有發生過這種情況，但現在我無法擺脫它。

清單文件的相關部分如下：

android:versionName="1.0" > 

<uses-sdk 
    android:minSdkVersion="14" 
    android:targetSdkVersion="15" /> 

<uses-permission android:name="android.permission.INTERNET"/> 

<application 

移動許可線上方或下方的使用-SDK子句都沒有區別，也沒有改變的最小或目標版本。無論選擇什麼內容（因爲我無法回到API 8或10或任何真正的早期級別），如果uses-sdk子句在文件中，應用程序將崩潰。

刪除它允許它運行。

我得到的錯誤是「不幸的[app]已經停止」默認，並且logcat列表中存在關聯的「FATAL EXCEPTION：main」錯誤。

任何幫助或建議表示讚賞。

謝謝！

這是我正在努力的一本書的例子（或者我應該說）。 :)

我在下面添加完整的logcat清單。

10-03 13:29:18.270: E/Trace(860): error opening trace file: No such file or directory (2) 
10-03 13:29:18.950: D/AndroidRuntime(860): Shutting down VM 
10-03 13:29:18.950: W/dalvikvm(860): threadid=1: thread exiting with uncaught exception (group=0x40a13300) 
10-03 13:29:18.960: E/AndroidRuntime(860): FATAL EXCEPTION: main 
10-03 13:29:18.960: E/AndroidRuntime(860): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.paad.earthquake/com.paad.earthquake.Earthquake}: android.os.NetworkOnMainThreadException 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.ActivityThread.access$600(ActivityThread.java:130) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.os.Handler.dispatchMessage(Handler.java:99) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.os.Looper.loop(Looper.java:137) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.ActivityThread.main(ActivityThread.java:4745) 
10-03 13:29:18.960: E/AndroidRuntime(860): at java.lang.reflect.Method.invokeNative(Native Method) 
10-03 13:29:18.960: E/AndroidRuntime(860): at java.lang.reflect.Method.invoke(Method.java:511) 
10-03 13:29:18.960: E/AndroidRuntime(860): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 
10-03 13:29:18.960: E/AndroidRuntime(860): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
10-03 13:29:18.960: E/AndroidRuntime(860): at dalvik.system.NativeStart.main(Native Method) 
10-03 13:29:18.960: E/AndroidRuntime(860): Caused by: android.os.NetworkOnMainThreadException 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117) 
10-03 13:29:18.960: E/AndroidRuntime(860): at java.net.InetAddress.lookupHostByName(InetAddress.java:385) 
10-03 13:29:18.960: E/AndroidRuntime(860): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236) 
10-03 13:29:18.960: E/AndroidRuntime(860): at java.net.InetAddress.getAllByName(InetAddress.java:214) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:70) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:341) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:315) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpEngine.connect(HttpEngine.java:310) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:289) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:239) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273) 
10-03 13:29:18.960: E/AndroidRuntime(860): at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:486) 
10-03 13:29:18.960: E/AndroidRuntime(860): at com.paad.earthquake.EarthquakeListFragment.refreshEarthquakes(EarthquakeListFragment.java:77) 
10-03 13:29:18.960: E/AndroidRuntime(860): at com.paad.earthquake.EarthquakeListFragment.onActivityCreated(EarthquakeListFragment.java:55) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:848) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1035) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1017) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1802) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.Activity.performCreate(Activity.java:5011) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 
10-03 13:29:18.960: E/AndroidRuntime(860): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) 
10-03 13:29:18.960: E/AndroidRuntime(860): ... 11 more 

Answer 1

的錯誤是NetworkOnMainThreadException 與ICS開始，你不能在主線程上的任何網絡接入。您應該在您進行網絡訪問的地方使用 AsyncTask。

Answer 2

正如@Sameer所說，您正在進行活動核心的網絡調用。你永遠不應該那樣做。您的活動的所有代碼都在主線程上運行：用於UI的那個代碼。 您不應該在該線程上進行繁重的計算：它會從UI中取走資源，使其滯後。 http調用更糟糕：只要您沒有響應，UI就會被阻止。

在AsyncTask中實現您的網絡調用。