public class MainActivity extends Activity {
private EditText username;
private EditText pass;
private final String NAMESPACE = "http://tempuri.org/";
private final String URL = "http://122.252.200.98/fts/registration.asmx";
String user_id;
String password;
String tran="2";
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button signin = (Button) findViewById(R.id.button1);
signin.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
username = (EditText) findViewById(R.id.editText1);
user_id = username.getText().toString();
pass = (EditText) findViewById(R.id.editText2);
password = pass.getText().toString();
new LoginTask().execute();
}
});
}
private boolean doLogin(String user_id1, String password1, String transactiontype) {
boolean result=false;
final String SOAP_ACTION = "http://tempuri.org/getUser";
final String METHOD_NAME = "getUser";
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
PropertyInfo username = new PropertyInfo();
PropertyInfo passw=new PropertyInfo();
PropertyInfo trans=new PropertyInfo();
username.setValue(user_id);
username.setType(String.class);
username.setName("custname");
request.addProperty(username);
passw.setValue(password);
passw.setType(String.class);
passw.setName("pwd");
request.addProperty(passw);
trans.setValue(tran);
trans.setType(String.class);
trans.setName("signtype");
request.addProperty(trans);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
System.out.println(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
try {
androidHttpTransport.call(SOAP_ACTION, envelope);
//SoapPrimitive response = (SoapPrimitive)envelope.getResponse();
Object response= (Object)envelope.getResponse();
Log.i("reply", response.toString());
System.out.println("response" +response);
if(response.toString().equalsIgnoreCase("Success-User Exists"))
{
result = true;
System.out.println(result);
Toast.makeText(getApplicationContext(), "Success", Toast.LENGTH_SHORT).show();
}
else if(response.toString().equalsIgnoreCase("Username does not Exists"))
{
result=false;
Toast.makeText(getApplicationContext(), "username incorrect", Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getApplicationContext(), "passsword incorrect", Toast.LENGTH_SHORT).show();
}
}catch(SocketException ex)
{
Log.e("Error : " , "Error on soapPrimitiveData() " + ex.getMessage());
ex.printStackTrace();
}
catch (Exception e) {
Log.e("Error : " , "Error on soapPrimitiveData() " + e.getMessage());
e.printStackTrace();
}
return result;
}
private class LoginTask extends AsyncTask<Void, Void, Void> {
private final ProgressDialog dialog = new ProgressDialog(
MainActivity.this);
protected void onPreExecute() {
this.dialog.setMessage("Logging in...");
this.dialog.show();
}
protected Void doInBackground(Void... unused) {
boolean auth=doLogin(user_id,password,tran);
System.out.println(auth);
Looper.prepare();
return null;// don't interact with the ui!
}
protected void onPostExecute(Void result) {
if (this.dialog.isShowing()) {
this.dialog.dismiss();
}
}
}
}
记录cat错误：
11-12 17:10:41.943: E/Error :(19833): Error on soapPrimitiveData() Can't create handler inside thread that has not called Looper.prepare()
11-12 17:10:41.944: W/System.err(19833): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
11-12 17:10:41.952: W/System.err(19833): at android.os.Handler.<init>(Handler.java:152)
11-12 17:10:41.954: W/System.err(19833): at android.widget.Toast.<init>(Toast.java:99)
11-12 17:10:41.957: W/System.err(19833): at android.widget.Toast.makeText(Toast.java:262)
11-12 17:10:41.962: W/System.err(19833): at com.example.logincheck.MainActivity.doLogin(MainActivity.java:113)
11-12 17:10:41.965: W/System.err(19833): at com.example.logincheck.MainActivity.access$0(MainActivity.java:57)
11-12 17:10:41.967: W/System.err(19833): at com.example.logincheck.MainActivity$LoginTask.doInBackground(MainActivity.java:145)
11-12 17:10:41.970: W/System.err(19833): at com.example.logincheck.MainActivity$LoginTask.doInBackground(MainActivity.java:1)
11-12 17:10:41.973: W/System.err(19833): at android.os.AsyncTask$2.call(AsyncTask.java:216)
11-12 17:10:41.975: W/System.err(19833): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:337)
11-12 17:10:41.978: W/System.err(19833): at java.util.concurrent.FutureTask.run(FutureTask.java:169)
11-12 17:10:41.981: W/System.err(19833): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1119)
11-12 17:10:41.983: W/System.err(19833): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:612)
11-12 17:10:41.986: W/System.err(19833): at java.lang.Thread.run(Thread.java:1052)
这个问题已经问了好几次。但它对我的问题没有帮助。 调试时我得到了上述错误。我不知道我的代码中的错误是什么。我浏览了这个链接link。但我仍然没有弄到问题所在。
答案 0 :(得分：1)
我认为在AsyncTask的doInBackground方法中显示toast的问题。您需要将与UI相关的内容移至onPostExecute。
您正在doLogin方法中显示Toast，该方法在AsyncTask的doInBackground方法中调用。你需要删除它。
答案 1 :(得分：0)
查看错误：
android.widget.Toast.<init>(Toast.java:99)
at android.widget.Toast.makeText(Toast.java:262)
它说你的错误是显示祝酒词。 您只能在UI线程上显示toasts。
protected Void doInBackground(Void... unused) {
boolean auth=doLogin(user_id,password,tran);
System.out.println(auth);
Looper.prepare();
return null;// don't interact with the ui!
}
以上是在后台线程上发生的，doLogin（）正在使用toasts。
请参阅this回答，了解如何从异步任务调用Toast。
你也可以调用Activity.runOnUiThread（Runnable r）并将你的toast调用放在其中。
要制作此DRY代码，您可以创建一个名为showToast（String text）的方法，如下所示：
public void showToast(String text) {
try {
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(MainAcivity.this, text, Toast.LENGTH_LONG).show();
}
});
} catch (InterruptedException e) {
e.printStackTrace();
}
}