Android :: Unable To Load All Contact Photos In Application

In my app, I am using below code to obtain all contacts with PHOTO_ID:

CODE:.............

The app has a list view to display all contacts and use the ContactPhotoLoader in the stock contact app to load the contact photo async. When running, some contact photo can be displayed correctly and some cannot.

When clicking on the list items, the app will start the view contact activity of the stock contacts app:

CODE:..............

For the contacts, which photo cannot be displayed properly, is able to display correctly in the stock view contact activity. I have compared the source code of the stock contacts app and my app. They are doing the same thing basically. I have also checked for the permissions used by my app are covered the set of permissions used by the stock contacts app.