Ksoap2 无法在 Android 3.0 中运行。 Logcat 显示 NetworkOnMainThreadException:
02-24 20:18:34.536: ERROR/AndroidRuntime(428): java.lang.RuntimeException: Unable to start activity ComponentInfo{com. Bill/com. Bill.Diag}: android.os.NetworkOnMainThreadException
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1701)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1717)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at android.app.ActivityThread.access$1500(ActivityThread.java:123)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:984)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at android.os.Handler.dispatchMessage(Handler.java:99)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at android.os.Looper.loop(Looper.java:126)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at android.app.ActivityThread.main(ActivityThread.java:3900)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at java.lang.reflect.Method.invokeNative(Native Method)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at java.lang.reflect.Method.invoke(Method.java:491)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at dalvik.system.NativeStart.main(Native Method)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): Caused by: android.os.NetworkOnMainThreadException
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1069)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at dalvik.system.BlockGuard$WrappedNetworkSystem.connect(BlockGuard.java:368)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:208)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:431)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at java.net.Socket.connect(Socket.java:901)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:75)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:48)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection$Address.connect(HttpConnection.java:304)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:89)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHttpConnection(HttpURLConnectionImpl.java:292)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.makeConnection(HttpURLConnectionImpl.java:274)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:217)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.ksoap2.transport.ServiceConnectionSE.connect(ServiceConnectionSE.java:46)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:68)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at com.IsBill.Connection.Connect(Connection.java:53)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at com.IsBill.Diagnos.FirstProv(Diagnos.java:385)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at com.IsBill.Diagnos.onCreate(Diagnos.java:53)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1665)
02-24 20:18:34.536: ERROR/AndroidRuntime(428): ... 11 more
最佳答案
HoneyComb 中启用了 StrictMode，禁用它以避免 NetworkOnMainThreadException
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
更新:
检测 strictMode 的另一种方法是使用 StrictModeWrapper 类。
private static boolean strictModeAvailable;
// use the StrictModeWrapper to see if we are running on Android 2.3 or higher and StrictMode is available
static {
try {
StrictModeWrapper.checkAvailable();
strictModeAvailable = true;
} catch (Throwable throwable) {
strictModeAvailable = false;
}
}
StrictModeWrapper 类
import android.os.StrictMode;
/**
* StrictModeWrapper is a wrapper class for the android class android.os.StrictMode provided with Android 2.3 onwards.
* It allows usage of StrictMode class on devices/emulators with Android 2.3 or higher, while providing an availability
* check so that the code can stay in situ for lower platform versions. See the application class for usage.
*
* @author Manfred Moser <<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="412c202f273324250132282c312d2826282d2835386f222e2c" rel="noreferrer noopener nofollow">[email protected]</a>>
*
* @see "http://android-developers.blogspot.com/2009/04/backward-compatibility-for-android.html"
* @see "http://android-developers.blogspot.com/2010/12/new-gingerbread-api-strictmode.html"
*/
public class StrictModeWrapper {
/* class initialization fails when this throws an exception */
static {
try {
Class.forName("android.os.StrictMode", true, Thread.currentThread().getContextClassLoader());
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
/**
* Check if the class android.os.StrictMode is available at runtime.
*/
public static void checkAvailable() {}
/**
* Call StrictMode.enableDefaults().
*/
public static void enableDefaults() {
StrictMode.enableDefaults();
}
// all the implementation below is not tested but it should work ... feel free to check and send me fixes..
public static void setThreadPolicy(android.os.StrictMode.ThreadPolicy policy) {
StrictMode.setThreadPolicy(policy);
}
public static android.os.StrictMode.ThreadPolicy getThreadPolicy() {
return StrictMode.getThreadPolicy();
}
public static android.os.StrictMode.ThreadPolicy allowThreadDiskWrites() {
return StrictMode.allowThreadDiskWrites();
}
public static android.os.StrictMode.ThreadPolicy allowThreadDiskReads() {
return StrictMode.allowThreadDiskReads();
}
public static void setVmPolicy(android.os.StrictMode.VmPolicy policy) {
StrictMode.setVmPolicy(policy);
}
public static android.os.StrictMode.VmPolicy getVmPolicy() {
return StrictMode.getVmPolicy();
}
public static final class ThreadPolicyWrapper
{
public static final class BuilderWrapper
{
StrictMode.ThreadPolicy.Builder builderInstance;
public BuilderWrapper() {
builderInstance = new StrictMode.ThreadPolicy.Builder();
}
public BuilderWrapper(android.os.StrictMode.ThreadPolicy policy) {
builderInstance = new StrictMode.ThreadPolicy.Builder(policy);
}
public android.os.StrictMode.ThreadPolicy.Builder detectAll() {
return builderInstance.detectAll();
}
public android.os.StrictMode.ThreadPolicy.Builder permitAll() {
return builderInstance.permitAll();
}
public android.os.StrictMode.ThreadPolicy.Builder detectNetwork() {
return builderInstance.detectNetwork();
}
public android.os.StrictMode.ThreadPolicy.Builder permitNetwork() {
return builderInstance.permitNetwork();
}
public android.os.StrictMode.ThreadPolicy.Builder detectDiskReads() {
return builderInstance.detectDiskReads();
}
public android.os.StrictMode.ThreadPolicy.Builder permitDiskReads() {
return builderInstance.permitDiskReads();
}
public android.os.StrictMode.ThreadPolicy.Builder detectDiskWrites() {
return builderInstance.detectDiskWrites();
}
public android.os.StrictMode.ThreadPolicy.Builder permitDiskWrites() {
return builderInstance.permitDiskWrites();
}
public android.os.StrictMode.ThreadPolicy.Builder penaltyDialog() {
return builderInstance.penaltyDialog();
}
public android.os.StrictMode.ThreadPolicy.Builder penaltyDeath() {
return builderInstance.penaltyDeath();
}
public android.os.StrictMode.ThreadPolicy.Builder penaltyLog() {
return builderInstance.penaltyLog();
}
public android.os.StrictMode.ThreadPolicy.Builder penaltyDropBox() {
return builderInstance.penaltyDropBox();
}
public android.os.StrictMode.ThreadPolicy build() {
return builderInstance.build();
}
}
}
public static final class VmPolicyWrapper {
public static final class BuilderWrapper {
private StrictMode.VmPolicy.Builder builderInstance;
public BuilderWrapper() {
builderInstance = new StrictMode.VmPolicy.Builder();
}
public android.os.StrictMode.VmPolicy.Builder detectAll() {
return builderInstance.detectAll();
}
public android.os.StrictMode.VmPolicy.Builder detectLeakedSqlLiteObjects() {
return builderInstance.detectLeakedSqlLiteObjects();
}
public android.os.StrictMode.VmPolicy.Builder penaltyDeath() {
return builderInstance.penaltyDeath();
}
public android.os.StrictMode.VmPolicy.Builder penaltyLog() {
return builderInstance.penaltyLog();
}
public android.os.StrictMode.VmPolicy.Builder penaltyDropBox() {
return builderInstance.penaltyDropBox();
}
public android.os.StrictMode.VmPolicy build() {
return builderInstance.build();
}
}
}
// add more wrapping as desired..
}
关于android - Ksoap2 无法在 android 3.0 中工作并出现 NetworkOnMainThreadException，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/5106760/