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Java 奇怪的Android异步任务bug我可以'；我不明白

java android

Java 奇怪的Android异步任务bug我可以'；我不明白,java,android,android-asynctask,ksoap2,Java,Android,Android Asynctask,Ksoap2,因此，我使用AsyncTask来执行对windows WCF服务的调用。到目前为止，它做得很好，我可以让它调用一个返回字符串的方法，并在应用程序中显示它。但是当尝试返回bool的方法时，我会得到一些错误 RegisterSeatTask task = new RegisterSeatTask(); task.execute(this); protected class RegisterSeatTask extends AsyncTask<Context, Integer, String&

因此，我使用AsyncTask来执行对windows WCF服务的调用。到目前为止，它做得很好，我可以让它调用一个返回字符串的方法，并在应用程序中显示它。但是当尝试返回bool的方法时，我会得到一些错误

RegisterSeatTask task = new RegisterSeatTask();
task.execute(this);

protected class RegisterSeatTask extends AsyncTask<Context, Integer, String> {
    protected String doInBackground(Context... arg0) {
try {
......
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());

if (!LicenseHandler.RegisterSeat(licenseKey, ident,android.os.Build.DEVICE,tm.getDeviceId())) {
                    return "License is invalid or does not have any empty seats!";
}
......
}
protected void onPostExecute(String result) {
        Toast.makeText(getBaseContext(), result, Toast.LENGTH_LONG).show();
    }
}

public static boolean RegisterSeat(String License, String Identifier,
        String Device, String DeviceID) {
    try {

        METHOD_NAME = "RegisterSeat";
        SOAP_ACTION = "http://tempuri.org/IService/RegisterSeat";

        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        request.addProperty("License", License);
        request.addProperty("MyIdentifier", Identifier);
        request.addProperty("Device", Device);
        request.addProperty("DeviceID", DeviceID);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);

        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        SoapPrimitive result = (SoapPrimitive) envelope.getResponse();
        if (result.toString().toLowerCase() == "true") {
            return true;
        }
        // to get the data
        return false;
    } catch (Exception e) {

        return false;
    }

}
代码

RegisterSeatTask task = new RegisterSeatTask();
task.execute(this);

protected class RegisterSeatTask extends AsyncTask<Context, Integer, String> {
    protected String doInBackground(Context... arg0) {
try {
......
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());

if (!LicenseHandler.RegisterSeat(licenseKey, ident,android.os.Build.DEVICE,tm.getDeviceId())) {
                    return "License is invalid or does not have any empty seats!";
}
......
}
protected void onPostExecute(String result) {
        Toast.makeText(getBaseContext(), result, Toast.LENGTH_LONG).show();
    }
}

public static boolean RegisterSeat(String License, String Identifier,
        String Device, String DeviceID) {
    try {

        METHOD_NAME = "RegisterSeat";
        SOAP_ACTION = "http://tempuri.org/IService/RegisterSeat";

        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        request.addProperty("License", License);
        request.addProperty("MyIdentifier", Identifier);
        request.addProperty("Device", Device);
        request.addProperty("DeviceID", DeviceID);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);

        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        SoapPrimitive result = (SoapPrimitive) envelope.getResponse();
        if (result.toString().toLowerCase() == "true") {
            return true;
        }
        // to get the data
        return false;
    } catch (Exception e) {

        return false;
    }

}

RegisterSeatTask任务=新建RegisterSeatTask（）；
任务。执行（这个）；
受保护的类RegisterSeatTask扩展了AsyncTask{
受保护的字符串doInBackground（上下文…arg0）{
试一试{
......
SharedReferences prefs=PreferenceManager.GetDefaultSharedReferences（getBaseContext（））；
if（！LicenseHandler.RegisterSeat（licenseKey，ident，android.os.Build.DEVICE，tm.getDeviceId（））{
return“许可证无效或没有空座位！”；
}
......
}
受保护的void onPostExecute（字符串结果）{
Toast.makeText（getBaseContext（），result，Toast.LENGTH_LONG.show（）；
}
}
公共静态布尔寄存器SEAT（字符串许可证、字符串标识符、，
字符串设备，字符串设备ID）{
试一试{
方法_NAME=“RegisterSeat”；
SOAP_操作=”http://tempuri.org/IService/RegisterSeat";
SoapObject请求=新的SoapObject（名称空间、方法名称）；
请求。添加属性（“许可证”，许可证）；
addProperty（“MyIdentifier”，标识符）；
请求。添加属性（“设备”，设备）；
请求.addProperty（“DeviceID”，DeviceID）；
SoapSerializationEnvelope=新的SoapSerializationEnvelope(
第11版）；
envelope.dotNet=true；
envelope.setOutputSoapObject（请求）；
HttpTransportSE androidHttpTransport=新的HttpTransportSE（URL）；
调用（SOAP_操作，信封）；
SoapPrimitive结果=（SoapPrimitive）信封.getResponse（）；
if（result.toString（）.toLowerCase（）=“true”）{
返回true；
}
//获取数据
返回false；
}捕获（例外e）{
返回false；
}
}
但是，每次我运行RegisterSeat（）方法时，代码都会停止并结束在Catch（）中的最后一行，并且..没有表达式强制转换吗？ 当wcf返回它时，它要么是真的，要么是假的。但是在某个地方，所有的东西都出了问题，我不知道该怎么理解它：/

RegisterSeatTask task = new RegisterSeatTask();
task.execute(this);

protected class RegisterSeatTask extends AsyncTask<Context, Integer, String> {
    protected String doInBackground(Context... arg0) {
try {
......
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());

if (!LicenseHandler.RegisterSeat(licenseKey, ident,android.os.Build.DEVICE,tm.getDeviceId())) {
                    return "License is invalid or does not have any empty seats!";
}
......
}
protected void onPostExecute(String result) {
        Toast.makeText(getBaseContext(), result, Toast.LENGTH_LONG).show();
    }
}

public static boolean RegisterSeat(String License, String Identifier,
        String Device, String DeviceID) {
    try {

        METHOD_NAME = "RegisterSeat";
        SOAP_ACTION = "http://tempuri.org/IService/RegisterSeat";

        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        request.addProperty("License", License);
        request.addProperty("MyIdentifier", Identifier);
        request.addProperty("Device", Device);
        request.addProperty("DeviceID", DeviceID);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);

        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        SoapPrimitive result = (SoapPrimitive) envelope.getResponse();
        if (result.toString().toLowerCase() == "true") {
            return true;
        }
        // to get the data
        return false;
    } catch (Exception e) {

        return false;
    }

}
我认为你的设置有问题。程序不可能像你的截图那样真正达到断点
返回false
，因为
被窃听的
是
正确的
。此外，在你的第二个截图中，你还没有进入
捕获
，而是在中的
返回false
ner是尝试的一部分。此语句不会引发异常，因此如果您最终被捕获，这是非常奇怪的。我猜部署的代码和IDE中的代码不完全相同。如果我查看您粘贴的代码和您制作的屏幕截图，它们也不完全相同。解决此部署问题，解决问题请在注释中单击，然后看看会发生什么。
我要注意的一点是，您应该使用.equals（“true”）而不是“==true”来比较字符串


RegisterSeatTask task = new RegisterSeatTask();
task.execute(this);

protected class RegisterSeatTask extends AsyncTask<Context, Integer, String> {
    protected String doInBackground(Context... arg0) {
try {
......
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());

if (!LicenseHandler.RegisterSeat(licenseKey, ident,android.os.Build.DEVICE,tm.getDeviceId())) {
                    return "License is invalid or does not have any empty seats!";
}
......
}
protected void onPostExecute(String result) {
        Toast.makeText(getBaseContext(), result, Toast.LENGTH_LONG).show();
    }
}

public static boolean RegisterSeat(String License, String Identifier,
        String Device, String DeviceID) {
    try {

        METHOD_NAME = "RegisterSeat";
        SOAP_ACTION = "http://tempuri.org/IService/RegisterSeat";

        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        request.addProperty("License", License);
        request.addProperty("MyIdentifier", Identifier);
        request.addProperty("Device", Device);
        request.addProperty("DeviceID", DeviceID);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);

        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        SoapPrimitive result = (SoapPrimitive) envelope.getResponse();
        if (result.toString().toLowerCase() == "true") {
            return true;
        }
        // to get the data
        return false;
    } catch (Exception e) {

        return false;
    }

}



很高兴它成功了：）
我要注意的一点是，您应该使用.equals（“true”）而不是“==true”为了比较你的stringsoh，那只是wierd…equals做了这个把戏…它现在完成了方法并返回了正确的值..你能用这个文本做一个答案，这样我就可以给你答案吗？：）你的eclipse版本是什么？你使用的编译器级别是什么

RegisterSeatTask task = new RegisterSeatTask();
task.execute(this);

protected class RegisterSeatTask extends AsyncTask<Context, Integer, String> {
    protected String doInBackground(Context... arg0) {
try {
......
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());

if (!LicenseHandler.RegisterSeat(licenseKey, ident,android.os.Build.DEVICE,tm.getDeviceId())) {
                    return "License is invalid or does not have any empty seats!";
}
......
}
protected void onPostExecute(String result) {
        Toast.makeText(getBaseContext(), result, Toast.LENGTH_LONG).show();
    }
}

public static boolean RegisterSeat(String License, String Identifier,
        String Device, String DeviceID) {
    try {

        METHOD_NAME = "RegisterSeat";
        SOAP_ACTION = "http://tempuri.org/IService/RegisterSeat";

        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        request.addProperty("License", License);
        request.addProperty("MyIdentifier", Identifier);
        request.addProperty("Device", Device);
        request.addProperty("DeviceID", DeviceID);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);

        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        SoapPrimitive result = (SoapPrimitive) envelope.getResponse();
        if (result.toString().toLowerCase() == "true") {
            return true;
        }
        // to get the data
        return false;
    } catch (Exception e) {

        return false;
    }

}