wait for multiple volley responses in a for loop - android-volley

Question

I am using volley singleton and add all volley request to it.
sample code of adding volley request to queue
MyApplication.getInstance().addToReqQueue(jsObjRequest, "jreq1");
I have an onclick function.
buttonId.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
for(int i=0;i<4;i++){
//....... here i call for asycn volley requests which get added to the queue of volleysingleton
}
// ******how to ensure all my volley requests are completed before i move to next step here.*****
//calling for new intent
Intent m = new Intent(PlaceActivity.this, Myplanshow.class);
m.putExtra("table_name", myplansLists.get(myplansLists.size() - 1).table_name);
m.putExtra("table_name_without_plan_number", myplansLists.get(myplansLists.size() - 1).place_url_name);
m.putExtra("changed", "no");
m.putExtra("plannumber", myplansLists.size());
//moving to new intent;
v.getContext().startActivity(m);
}
});
Inside onclick i have a for loop which will execute multiple volley requests.
After the for loop it will start a new activity through intent.
But for my new activity to show, i need the data of all the volley requests in the for loop to be completed before, it leaves this activity and goes to new activity.

Answer 1

My approach basically is to set up 2 int variables: successCount and errorCount that I use to monitor the volley requests. In the onResponse of each request, I increment the successCount variable, then in the onErrorResponse, I increment the errorCount. At the end, I check if the sum of both variables equals the number of requests made, if its not, the thread waits in a loop.
check this:
buttonId.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
new Runnable(){
#Override
public void run() {
int successCount=0;
int errorCount=0;
for(int i=0;i<4;i++){
//....... here i call for asycn volley requests which get added to the queue of volleysingleton
//in the onResponse of each of the volley requests, increment successCount by 1;
// i.e successCount++;
//also in onErrorResponse of each of the volley requests, increment
// errorCount by 1
}
// ******how to ensure all my volley requests are completed before i move to next step here.*****
// wait here till all requests are finished
while (successCount+errorCount<4)
{
Log.d("Volley"," waiting");
}
//calling for new intent
Intent m = new Intent(PlaceActivity.this, Myplanshow.class);
m.putExtra("table_name", myplansLists.get(myplansLists.size() - 1).table_name);
m.putExtra("table_name_without_plan_number", myplansLists.get(myplansLists.size() - 1).place_url_name);
m.putExtra("changed", "no");
m.putExtra("plannumber", myplansLists.size());
//moving to new intent;
v.getContext().startActivity(m);
}
}.run();
}
});