【发布时间】：2018-02-24 03:15:36
【问题描述】：
在屏幕上有Button. 一旦使用点击Button 和AsyncTask 将执行并从数据库中获取数据并显示在AlertDialog. ButtonClick 和AlertDialog 之间的时间需要显示CircularProgressBar.
我的代码写在下面，但没有显示进度条。
该要求的任何其他解决方法。
public void Select_PaymentMonths(String selectFlatNumber)
{
/*
progressBarLoadData = new ProgressDialog(get ApplicationContext());
progressBarLoadData.setMessage("Please Wait....");
progressBarLoadData.show();
*/
// ProgressDialog progressDialog = new ProgressDialog(this);
// progressDialog.setMessage("Please Wait......");
// progressDialog.show();
//monthProgress.setVisibility(View.VISIBLE);
//ProgressDialog progressDialog = new ProgressDialog(this);
// progressDialog.setMessage("Please Wait......");
ProgressDialog progressDialog = ProgressDialog.show(this,"Please Wait","Wait for loading Payment Month data");
residentsPaymentInfo = new ArrayList<UserPaymentInfo>();
ResidentsPaymentInfoHttpResponse getResidentsPaymentMonthDetails = new
ResidentsPaymentInfoHttpResponse();
try {
residentsPaymentInfo =
getResidentsPaymentMonthDetails.execute(selectFlatNumber).get();
//monthProgress.setVisibility(View.GONE);
progressDialog.dismiss();
int notPaidMonthsCount = residentsPaymentInfo.size();
List<String> listItems = new ArrayList<String>();
for(int i=0; i<notPaidMonthsCount; i++ )
{
UserPaymentInfo userNotPaidMonthInfo = new UserPaymentInfo();
userNotPaidMonthInfo = residentsPaymentInfo.get(i);
//listItems.add(userNotPaidMonthInfo.getPaymentMonth() +","+
userNotPaidMonthInfo.getPaymentoYear() +" - ₹" +
userNotPaidMonthInfo.getactualAmount() + "/-");
listItems.add(userNotPaidMonthInfo.getPaymentMonth() +" "+
userNotPaidMonthInfo.getPaymentoYear() +" ₹" +
userNotPaidMonthInfo.getactualAmount() + "/-");
}
final CharSequence[] items = listItems.toArray(new
CharSequence[listItems.size()]);
// arraylist to keep the selected items
final ArrayList seletedItems=new ArrayList();
//progressBarLoadData.dismiss();
//progressDialog.dismiss();
AlertDialog dialog = new AlertDialog.Builder(this)
.setTitle("Select Payment Month Year Amount")
.setMultiChoiceItems(items, null, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int
indexSelected, boolean isChecked) {
if (isChecked) {
// If the user checked the item, add it to the
selected items
//seletedItems.add(indexSelected);
seletedItems.add(indexSelected);
} else if (seletedItems.contains(indexSelected)) {
// Else, if the item is already in the array,
remove it
seletedItems.remove(Integer.valueOf(indexSelected));
}
}
}).setPositiveButton("OK", new
DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
Collections.sort(seletedItems);
String selectedMonths = "";
float totalAmount=0;
for(int i = 0 ; i < seletedItems.size(); i++) {
//selectedMonths = selectedMonths + items[(int)
(seletedItems.get(i))];
selectedMonths = selectedMonths +
residentsPaymentInfo.get((int)seletedItems.get(i)).getPaymentMonth() +"-
"+residentsPaymentInfo.get((int)seletedItems.get(i)).getPaymentoYear()+",";
totalAmount = totalAmount +
residentsPaymentInfo.get((int)seletedItems.get(i)).getactualAmount();
}
paymentMonth.setText(selectedMonths);
amountPaid.setText(String.valueOf(totalAmount));
//selectedMonths.split(",");
// Your code when user clicked on OK
// You can write the code to save the selected item here
}
}).setNegativeButton("Cancel", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int id) {
// Your code when user clicked on Cancel
}
}).create();
//return 50;
dialog.show();
}
catch (Exception e)
{
// e.printStackTrace();
}
}
我已将代码 ProgressDialog 代码更新为如下所示的异步任务，但进度对话框仍未出现。
public class ResidentsPaymentInfoHttpResponse extends
AsyncTask<String, Void, List<UserPaymentInfo>> {
ProgressDialog pDialog;
private Context MSAContext;
public ResidentsPaymentInfoHttpResponse(Context context)
{
MSAContext = context;
}
@Override
protected void onPreExecute(){
pDialog = new ProgressDialog(MSAContext);
pDialog.setMessage("Loading...");
pDialog.show();
}
@Override
protected List<UserPaymentInfo> doInBackground(String... params){
String flatNo = params[0];
String urls = "https://script.google.com/macros/s/";
List<UserPaymentInfo> residentsMonthlyPayments = new ArrayList<>();
try {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(urls)
.build();
Response responses = null;
try
{
responses = client.newCall(request).execute();
String jsonData = responses.body().string();
JSONObject jobject = new JSONObject(jsonData);
JSONArray jarray = jobject.getJSONArray("ResidentsInfo");
int limit = jarray.length();
for(int i=0;i<limit; i++)
{
JSONObject object = jarray.getJSONObject(i);
if(object.getString("FlatNo").equals(flatNo) && object.getString("PaymentStatus").equals("notpaid")) {
UserPaymentInfo residentMaintePayment = new UserPaymentInfo();
UserInfo residentInfo = new UserInfo();
residentInfo.setUserFlatNo(object.getString("FlatNo"));
residentInfo.setUserName(object.getString("Name"));
residentInfo.setUserEamil(object.getString("OwnerEmail"));
residentMaintePayment.setResidentData(residentInfo);
residentMaintePayment.setactualAmount(object.getLong("Actualamountneedtopay"));
residentMaintePayment.setPaymentYear(object.getInt("Year"));
residentMaintePayment.setPaymentMonth(object.getString("Month"));
residentsMonthlyPayments.add(residentMaintePayment);
}
}
}
catch (IOException e)
{
// e.printStackTrace();
}
}
catch (Exception ex)
{
// ex.printStackTrace();
}
return residentsMonthlyPayments;
}
protected void onPostExecute(List<UserPaymentInfo> rusult){
super.onPostExecute(rusult);
pDialog.dismiss();
}
}
在 Maintask 中调用异步任务，如下所示
ResidentsPaymentInfoHttpResponse getResidentsPaymentMonthDetails = new
ResidentsPaymentInfoHttpResponse(this);
try {
residentsPaymentInfo =
getResidentsPaymentMonthDetails.execute(selectFlatNumber).get();
//monthProgress.setVisibility(View.GONE);
// progressDialog.dismiss();
int notPaidMonthsCount = residentsPaymentInfo.size();
List<String> listItems = new ArrayList<String>();
进度条屏幕没有出现。
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标签： android