我试图在用户登录时使用下面的代码将所有角色分配给用户。
public class roles extends AsyncTask <String,Void,Void>{
@Override
protected Void doInBackground(String... params) {
final CloudUser user = new CloudUser();
final CloudRole role = new CloudRole("MCA");
user.setUserName(params[0]);
user.setPassword(params[1]);
try {
user.logIn(new CloudUserCallback() {
@Override
public void done(CloudUser cloudUser, CloudException e) throws CloudException {
if (cloudUser != null) {
System.out.println("login Successful");
System.out.println(cloudUser.getUserName());
cloudUser.isInRole(role);
}
if (e != null) {
System.out.println("In logn exception");
e.printStackTrace();
}
}
});
} catch (CloudException e) {
e.printStackTrace();
}
return null;
}
}
我收到以下错误:
致命异常:AsyncTask#1 处理:com.rakesh_kr.image,PID:31256 java.lang.RuntimeException:执行doInBackground()时发生错误 在android.os.AsyncTask $ 3.done(AsyncTask.java:300) 在java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355) at java.util.concurrent.FutureTask.setException(FutureTask.java:222) 在java.util.concurrent.FutureTask.run(FutureTask.java:242) 在android.os.AsyncTask $ SerialExecutor $ 1.run(AsyncTask.java:231) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) at java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:587) 在java.lang.Thread.run(Thread.java:818) 引起:java.lang.ClassCastException:io.cloudboost.json.JSONArray无法强制转换为java.util.ArrayList at io.cloudboost.CloudUser.isInRole(CloudUser.java:335) 在com.rakesh_kr.image.MainActivity $ roles $ 1.done(MainActivity.java:174) at io.cloudboost.CloudUser.logIn(CloudUser.java:219) 在com.rakesh_kr.image.MainActivity $ roles.doInBackground(MainActivity.java:168) 在com.rakesh_kr.image.MainActivity $ roles.doInBackground(MainActivity.java:155) 在android.os.AsyncTask $ 2.call(AsyncTask.java:288) 在java.util.concurrent.FutureTask.run(FutureTask.java:237) 在android.os.AsyncTask $ SerialExecutor $ 1.run(AsyncTask.java:231) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) at java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:587) 在java.lang.Thread.run(Thread.java:818)