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我在如何使用 ksoap2 我的代码连接到 Web 服务时遇到问题：

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.*;
import org.ksoap2.transport.HttpTransportSE;
import android.widget.TextView;


public class FirstScreen extends Activity {

private static final String SOAP_ACTION = "http://tempuri.org/CelsiusToFahrenheit";
private static final String METHOD_NAME = "CelsiusToFahrenheit";
private static final String NAMESPACE = "http://tempuri.org/";
private static final String URL = "http://www.w3schools.com/webservices/tempconvert.asmx";
TextView tv;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_first_screen);
    tv= (TextView)findViewById(R.id.TextView01);

    SoapObject Request = new SoapObject(NAMESPACE, METHOD_NAME);
    Request.addProperty("Celsius", "32");

    SoapSerializationEnvelope soapEnvelope =  new SoapSerializationEnvelope(SoapEnvelope.VER10);
    soapEnvelope.dotNet =true;
    soapEnvelope.setOutputSoapObject(Request);

    HttpTransportSE bah = new HttpTransportSE(URL);

    try
    {
        bah.call(SOAP_ACTION, soapEnvelope);
        SoapPrimitive resultString = (SoapPrimitive)soapEnvelope.getResponse();
        tv.setText("status: "  + resultString);

    }
    catch (Exception e)
    {
        e.printStackTrace();
    }

}

}

它说 Application MyTest (process com.falafel.mytest)) 已意外停止！！:(

我的错误：

10-10 13:14:06.690: E/dalvikvm(279): Could not find class  'org.ksoap2.serialization.SoapObject', referenced from method com.falafel.mytest.FirstScreen.onCreate
10-10 13:14:06.690: W/dalvikvm(279): VFY: unable to resolve new-instance 501 (Lorg/ksoap2/serialization/SoapObject;) in Lcom/falafel/mytest/FirstScreen;
10-10 13:14:06.690: D/dalvikvm(279): VFY: replacing opcode 0x22 at 0x0012
10-10 13:14:06.690: D/dalvikvm(279): VFY: dead code 0x0014-005a in Lcom/falafel/mytest/FirstScreen;.onCreate (Landroid/os/Bundle;)V
10-10 13:14:06.870: W/Resources(279): Converting to string: TypedValue{t=0x12/d=0x0 a=2 r=0x7f070000}
10-10 13:14:06.890: D/AndroidRuntime(279): Shutting down VM
10-10 13:14:06.890: W/dalvikvm(279): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
10-10 13:14:06.920: E/AndroidRuntime(279): FATAL EXCEPTION: main
10-10 13:14:06.920: E/AndroidRuntime(279): java.lang.NoClassDefFoundError: org.ksoap2.serialization.SoapObject
10-10 13:14:06.920: E/AndroidRuntime(279):  at com.falafel.mytest.FirstScreen.onCreate(FirstScreen.java:32)
10-10 13:14:06.920: E/AndroidRuntime(279):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
10-10 13:14:06.920: E/AndroidRuntime(279):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
10-10 13:14:06.920: E/AndroidRuntime(279):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
10-10 13:14:06.920: E/AndroidRuntime(279):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
10-10 13:14:06.920: E/AndroidRuntime(279):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
10-10 13:14:06.920: E/AndroidRuntime(279):  at android.os.Handler.dispatchMessage(Handler.java:99)
10-10 13:14:06.920: E/AndroidRuntime(279):  at android.os.Looper.loop(Looper.java:123)
10-10 13:14:06.920: E/AndroidRuntime(279):  at android.app.ActivityThread.main(ActivityThread.java:4627)
10-10 13:14:06.920: E/AndroidRuntime(279):  at java.lang.reflect.Method.invokeNative(Native Method)
10-10 13:14:06.920: E/AndroidRuntime(279):  at java.lang.reflect.Method.invoke(Method.java:521)
10-10 13:14:06.920: E/AndroidRuntime(279):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
10-10 13:14:06.920: E/AndroidRuntime(279):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
10-10 13:14:06.920: E/AndroidRuntime(279):  at dalvik.system.NativeStart.main(Native Method)
 10-10 13:14:11.240: I/Process(279): Sending signal. PID: 279 SIG: 9

任何帮助将不胜感激，谢谢！

4

2 回答 2

0

你做完了吗

Project > Properties > Java Build Path > Order and Export > 最后，勾选您导入的 KSOAP2 库。

另外，不要在 UI 线程上使用 web 服务，考虑使用服务或AsyncTask

于 2012-10-10T13:37:36.860 回答
0

在 Android 中使用ksoap2有时会很有挑战性。正如 ThePCWizard 正确建议的那样，最好使用AsyncTask.

你得到一个java.lang.NoClassDefFoundError可能表明ksoap.jar你的 Android 项目无法识别的。

Assuming you have the latest ADT version installed, you need to add the .jar file in the libs folder of your Android project. After that right click the .jar file -->Build path-->Add to build path.

Clean your project and try running the application. It should remove the class definition not found error.

I had implemented a similar application quite some time back. Here is the link.

Hope it helps!

于 2012-10-10T13:58:12.290 回答