Java 异步任务,进度对话框在关闭aletdialog后不会消失
嗨,我对android的AsyncTask类有点麻烦。下面是我在解析时登录用户的代码。存在不同的情况,例如密码不正确等 我的问题是错误检查工作正常,不同的情况下工作正常,但progressDialog按钮在我关闭alertdialog后不会消失。。。有人能帮我吗 这是我的密码Java 异步任务,进度对话框在关闭aletdialog后不会消失,java,android,Java,Android,嗨,我对android的AsyncTask类有点麻烦。下面是我在解析时登录用户的代码。存在不同的情况,例如密码不正确等 我的问题是错误检查工作正常,不同的情况下工作正常,但progressDialog按钮在我关闭alertdialog后不会消失。。。有人能帮我吗 这是我的密码 private class LoadTask extends AsyncTask<Map<String, String>, Integer, Void> { // called
private class LoadTask extends AsyncTask<Map<String, String>, Integer, Void> {
// called before running code in a separate thread
private Result resultCode;
private boolean isSuccess;
private ProgressDialog progressDialog;
public LoadTask(Activity activity) {
onPreExecute();
}
@Override
protected void onPreExecute() {
progressDialog = ProgressDialog.show(TitlePage.this,
getString(R.string.login_progress_title),
getString(R.string.login_progress_message), false, false);
}
@Override
protected Void doInBackground(Map<String, String>... arg0) {
// Try to login with the given inputs
ParseUser user = null;
Map<String, String> argMap = arg0[0];
try {
user = ParseUser.logIn(argMap.get("username"), argMap.get("password"));
} catch (ParseException e) {
e.fillInStackTrace();
boolean errorOccured = false;
List<ParseObject> usernameResults = new ArrayList<ParseObject>();
List<ParseObject> passwordResults = new ArrayList<ParseObject>();
ParseQuery query = ParseUser.getQuery();
// try to find the username that the user typed in
query.whereEqualTo("username", argMap.get("username"));
try {
query.count();
usernameResults = query.find();
} catch (ParseException e1) {
// error occured trying to find the username
errorOccured = true;
e1.printStackTrace();
} catch (NullPointerException e1) {
errorOccured = true;
e1.printStackTrace();
}
// try to find the password that the user typed in
// associated with that username
query.whereEqualTo("username", argMap.get("username"));
query.whereEqualTo("password", argMap.get("password"));
try {
query.count();
passwordResults = query.find();
} catch (ParseException e1) {
// error occured trying to find the password
errorOccured = true;
e1.printStackTrace();
} catch (NullPointerException e1) {
errorOccured = true;
e1.printStackTrace();
}
// figure out the error
if (errorOccured) {
resultCode = Result.UNEXPECTED_ERROR;
// buildAlertDialog(R.string.error_login_title, R.string.error_login_unexp);
}
if ((usernameResults.size() == 0) && (passwordResults.size() == 0)) {
resultCode = Result.BOTH_INCORRECT;
// buildAlertDialog(R.string.error_login_title, R.string.error_login_combo);
} else if ((usernameResults.size() == 0) && (passwordResults.size() != 0)) {
resultCode = Result.USERNAME_INCORRECT;
//buildAlertDialog(R.string.error_login_title, R.string.error_login_uname);
} else if ((usernameResults.size() != 0) && (passwordResults.size() == 0)) {
resultCode = Result.PASSWORD_INCORRECT;
//buildAlertDialog(R.string.error_login_title, R.string.error_login_pswd);
} else {
// unexpected error
resultCode = Result.UNEXPECTED_ERROR;
// buildAlertDialog(R.string.error_login_title, R.string.error_login_unexp);
}
isSuccess = false;
return null;
}
// Check for verified email
boolean emailVerified = user.getBoolean("emailVerified");
if (!emailVerified) {
resultCode = Result.EMAIL_NOT_VERIFIED;
ParseUser.logOut();
}
isSuccess = true;
return null;
}
@Override
protected void onPostExecute(Void result) {
progressDialog.dismiss();
if (isSuccess) {
TitlePage.this.setReturnStatus(isSuccess);
} else {
System.out.println("THIS IS RESULT CODE " + resultCode);
if (resultCode == Result.UNEXPECTED_ERROR) {
buildAlertDialog(R.string.error_login_title, R.string.error_login_unexp);
} else if (resultCode == Result.BOTH_INCORRECT) {
buildAlertDialog(R.string.error_login_title, R.string.error_login_combo);
} else if (resultCode == Result.USERNAME_INCORRECT) {
buildAlertDialog(R.string.error_login_title, R.string.error_login_uname);
} else if (resultCode == Result.PASSWORD_INCORRECT) {
buildAlertDialog(R.string.error_login_title, R.string.error_login_pswd);
} else {
buildAlertDialog(R.string.error_login_title, R.string.error_login_verif);
}
TitlePage.this.setReturnStatus(isSuccess);
}
}
}
私有类LoadTask扩展了AsyncTask{
//在单独线程中运行代码之前调用
私有结果代码;
私有布尔访问;
私有进程对话;
公共加载任务(活动){
onPreExecute();
}
@凌驾
受保护的void onPreExecute(){
progressDialog=progressDialog.show(TitlePage.this,
getString(R.string.login\u progress\u title),
getString(R.string.login\u progress\u message),false,false);
}
@凌驾
受保护的Void doInBackground(地图…arg0){
//尝试使用给定的输入登录
ParseUser=null;
映射argMap=arg0[0];
试一试{
user=ParseUser.logIn(argMap.get(“用户名”)、argMap.get(“密码”);
}捕获(解析异常){
e、 fillInStackTrace();
布尔errorOccursed=false;
List usernameResults=new ArrayList();
List passwordResults=new ArrayList();
ParseQuery=ParseUser.getQuery();
//尝试查找用户键入的用户名
query.whereEqualTo(“用户名”,argMap.get(“用户名”);
试一试{
query.count();
usernameResults=query.find();
}捕获(解析异常e1){
//试图查找用户名时出错
ErrorOccursed=true;
e1.printStackTrace();
}捕获(NullPointerException e1){
ErrorOccursed=true;
e1.printStackTrace();
}
//尝试查找用户键入的密码
//与该用户名关联
query.whereEqualTo(“用户名”,argMap.get(“用户名”);
query.whereEqualTo(“密码”,argMap.get(“密码”);
试一试{
query.count();
passwordResults=query.find();
}捕获(解析异常e1){
//试图查找密码时出错
ErrorOccursed=true;
e1.printStackTrace();
}捕获(NullPointerException e1){
ErrorOccursed=true;
e1.printStackTrace();
}
//找出错误
如果(发生错误){
resultCode=Result.UNEXPECTED\u错误;
//buildAlertDialog(R.string.error\u login\u title,R.string.error\u login\u unep);
}
if((usernameResults.size()=0)和&(passwordResults.size()=0)){
resultCode=结果。两个\u都不正确;
//buildAlertDialog(R.string.error\u login\u title,R.string.error\u login\u组合);
}else if((usernamesults.size()=0)和&(passwordResults.size()!=0)){
resultCode=Result.USERNAME\u不正确;
//buildAlertDialog(R.string.error\u login\u title,R.string.error\u login\u uname);
}else if((usernameResults.size()!=0)和&(passwordResults.size()=0)){
resultCode=Result.PASSWORD\u不正确;
//buildAlertDialog(R.string.error\u login\u title,R.string.error\u login\u pswd);
}否则{
//意外错误
resultCode=Result.UNEXPECTED\u错误;
//buildAlertDialog(R.string.error\u login\u title,R.string.error\u login\u unep);
}
isSuccess=false;
返回null;
}
//检查已验证的电子邮件
boolean emailVerified=user.getBoolean(“emailVerified”);
如果(!emailVerified){
resultCode=Result.EMAIL\u未验证;
ParseUser.logOut();
}
isSuccess=true;
返回null;
}
@凌驾
受保护的void onPostExecute(void结果){
progressDialog.disclose();
如果(isSuccess){
TitlePage.this.setReturnStatus(isSuccess);
}否则{
System.out.println(“这是结果代码”+resultCode);
if(resultCode==Result.UNEXPECTED\u错误){
buildAlertDialog(R.string.error\u login\u title,R.string.error\u login\u unep);
}else if(resultCode==结果。两者都不正确){
buildAlertDialog(R.string.error\u login\u title,R.string.error\u login\u组合);
}else if(resultCode==Result.USERNAME\u不正确){
buildAlertDialog(R.string.error\u login\u title,R.string.error\u login\u uname);
}如果(resultCode==Result.PASSWORD\u不正确){
buildAlertDialog(R.string.error\u login\u title,R.string.error\u login\u pswd);
}否则{
buildAlertDialog(R.string.error\u login\u title,R.string.error\u login\u verif);
}
TitlePage.this.setReturnStatus(isSuccess);
}
}
}
这是我在主活动中运行异步任务的代码
Map<String, String> argMap = new HashMap<String, String>();
argMap.put("username", usernameString);
argMap.put("password", passwordString);
LoadTask task = new LoadTask(this);
task.execute(argMap);
private void buildAlertDialog(final int title, final int message) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
// set title
alertDialogBuilder.setTitle(title);
// set dialog message
alertDialogBuilder
.setMessage(message)
.setCancelable(false)
.setPositiveButton(R.string.close_alert, new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, final int id) {
// if this button is clicked, close the dialog box
dialog.cancel();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show the message
alertDialog.show();
if (progressDialog.isShowing()) {
progressDialog.dismiss();
}
}
Map argMap=newhashmap();
argMap.put(“用户名”,usernameString);
argMap.put(“密码”,passwordString);
LoadTask任务=新的LoadTask(此);
task.execute(argMap);
专用void buildalert对话框(
@Override
protected void onPreExecute() {
loadingDailog = new ProgressDialog(context,AlertDialog.THEME_HOLO_LIGHT);
((ProgressDialog) loadingDailog).setIndeterminate(true);
((ProgressDialog) loadingDailog).setProgressStyle(ProgressDialog.THEME_HOLO_LIGHT);
loadingDailog.setMessage("Loading...");
loadingDailog.show();
}
if (loadingDailog != null && loadingDailog.isShowing()) {
loadingDailog.dismiss();
}