Android-How do i get image urls stored on a server then load the images using picasso

Question

Issues Faced

I was able to get image url data using Okhttp but then store it on an arraylist but was faced with an issue because this processes takes time so when my activity start the view is seen before the data is received.

I am querying image urls from the server then displaying/loading them to a recycler view using picasso help please...?

To narrow down my question on the issue of how can i load images after i get urls from the server---- english is not my first language — Emanuel Paul Mnzava, Nov 01 '16 at 09:05
How do i get image urls stored on a server then load the images using picasso? — Emanuel Paul Mnzava, Nov 01 '16 at 09:10

score 0 · Answer 1 · answered Nov 01 '16 at 09:14

0

Use a progressDialog until receive your image urls from server and then dismiss it and then load it with picasso.

//before starting connection 
progressDialog.show();

//on Connection complete:
progressDialog.dismiss();

answered Nov 01 '16 at 09:14

Reza.Abedini

2,227
2
16
18

score 0 · Accepted Answer · answered Nov 01 '16 at 09:15

Loading the data from the api should be an asynchronous process, if you want to notify the user while that is happening, you can show a progress bar.

Upon receiving the data from the server, hide the progress bar and then load the images in the picasso, you can also specify a default image to picasso, which will be shown while the image itself is being loaded.

score 0 · Answer 3 · answered Nov 01 '16 at 09:16

0

You can show image using Picasso library using this code :

Picasso.with(context)
.load(post_pic_url)
.placeholder(R.drawable.placeholder_post)  // use a placeholder image here
.fit()  // to fit image on image view
.centerCrop()
.into(imgPost); // your image view object

If any explaination then please let me know in comments

answered Nov 01 '16 at 09:16

Parvindra Singh

53
2
10

The issue is not loading the images using picasso.But how to get the urls and show the image when the activity starts. – Emanuel Paul Mnzava Nov 01 '16 at 09:19
Are you using Async task ? Your urls are you getting from any api ? – Parvindra Singh Nov 01 '16 at 09:21
using okhttp hence on response i am getting all of my urls but the view seem to load before i get my data – Emanuel Paul Mnzava Nov 01 '16 at 09:24
are making your service call in onCreate () directly ? – Parvindra Singh Nov 01 '16 at 09:30
yes i have a function called getData(); that get data from the server and stores it on an arraylist.. then a function called loadData(); that loads data on a a view – Emanuel Paul Mnzava Nov 01 '16 at 09:40
You should youse Async Task for server request. Currently you are calling the server api in Main Thread directly , that is not a right approach. – Parvindra Singh Nov 01 '16 at 09:42
Use Async task and do your api call in doInBackground() and then use picasso library for imageview in onPostExecute() – Parvindra Singh Nov 01 '16 at 09:43

Android-How do i get image urls stored on a server then load the images using picasso

3 Answers3