[英]Android AsyncTask problem (connecting to a webservice)
所以我正在為應用程序進行登錄活動,並且我想使用AsynTask連接到(SOAP)Web服務,我將向該Web服務發送密鑰,用戶名和密碼,這將給我返回布爾結果是否用戶是否有效。...在嘗試AsyncTask之前,我使用的是在線找到的方法,在此方法中創建一個-caller類-擴展-Thread類-並在-MainActivity-內部使用while循環,從而使-UI線程進入睡眠狀態,這很正常,但是感覺有點不正確,所以我調查了一下並發現了有關AsyncTask的信息,但我似乎無法使其正常工作……PS:由於屬於該服務,因此我無法共享該Web服務的URL我的大學,對此感到抱歉。
public class LoginActivity extends AppCompatActivity {
Button loginButton;
EditText usernumber,password;
boolean result;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
getSupportActionBar().hide();
loginButton = (Button) findViewById(R.id.loginButton);
usernumber = (EditText) findViewById(R.id.userNum);
password = (EditText) findViewById(R.id.userPass);
loginButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
new CallLoginWS().execute();
if(result == true){
Intent bEmpIntent = new Intent(LoginActivity.this,BasicEmployeeActivity.class);
startActivity(bEmpIntent);
}else{
Toast.makeText(LoginActivity.this,"username or password incorrect",Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public class CallLoginWS extends AsyncTask<Void,Void,Void> {
private final String SOAP_ACTION = "";
private final String OPERATION_NAME = "IsValidUser";
private final String WSDL_TARGET_NAMESPACE = "";
private final String HOST = "";
private final String FILE = "";
private final String KEY = "";
@Override
protected Void doInBackground(Void... voids) {
SoapObject request = new SoapObject(WSDL_TARGET_NAMESPACE,OPERATION_NAME);
PropertyInfo pi=new PropertyInfo();
pi.setName("usagekey");
pi.setValue(KEY);
pi.setType(String.class);
request.addProperty(pi);
pi = new PropertyInfo();
pi.setName("username");
pi.setValue(usernumber.getText().toString());
pi.setType(String.class);
request.addProperty(pi);
pi = new PropertyInfo();
pi.setName("password");
pi.setValue(password.getText().toString());
pi.setType(String.class);
request.addProperty(pi);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
HttpsTransportSE httpsTransport = new HttpsTransportSE(HOST,443,FILE,15000);
SSLConnection ssl = new SSLConnection();
ssl.allowAllSSL();
try
{
httpsTransport.call(SOAP_ACTION, envelope);
result = (boolean)envelope.getResponse();
}
catch (Exception exception)
{
exception.printStackTrace();
}
return null;
}
}
}
我對此並不陌生,現在真的迷失了,因此我們非常感謝您的幫助/建議。
您需要移動此代碼
if(result == true){
Intent bEmpIntent = new Intent(LoginActivity.this,BasicEmployeeActivity.class);
startActivity(bEmpIntent);
}else{
Toast.makeText(LoginActivity.this,"username or password incorrect",Toast.LENGTH_SHORT).show();
}
到asynctask的onPostExecute()
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