Keep Coding

I am a beginner in android. I used a image of resolution 2048 * 1152 as the banner image below in one of the tabs in tab activity. That tab stutters and hangs up and loads slowly when activated. I plan on using many images like amazon, ebay, etc. How to code the app efficiently so that it wont hang up or stutter when using a lot of images?

For tabbed activity,(2048 * 1152) this resolution is too large. Use Picasso or other Glide library to resize your image.
Picasso.with(this)
.load("url Address")
// .loadFromResource(R.drwable.your_image)
.resize(200,200)
.into(imageView);
and dont forget to add dependecy in gradle.
compile 'com.squareup.picasso:picasso:2.5.2'