How to make Image Slider with ViewPager in Android Studio | Sanktips

I have a set of 5 slideshow slides that are each different. I have an activity page with 5 buttons. I use a PagerAdapter to load one set of slides from one of the buttons. However, when I create a new PagerAdapter class for the second set of slides for the next button, It's loading the slides from the first button, even though I am loading the new slides from my drawable on the new PagerAdapter class.
My question is, how can do my code where each button opens up a new set of slides using PagerAdapter? Because when I create a new PagerAdapter for the next button, the class is grayed out.

Thank you so so much, bro <3

Thanks for uplaoding

sir how could we use the images to open a new activity?,i have seen your video in which you had shown to make the images clickable but i could not use startactivity() in the "if" condition.

works fine, thanks for tutorial. how to make different sliders for each activity?

Thanks a lot buddy, you saved me a lot.
I would like to leave my contribution: If you want to use the PagerAdapter with an array of images brought from a query and decoded with base64 (if you aren't able to get the images from drawable folder), you has to do the following:

– First, decode base64 image as byte:
byte[] imageAsBytes1 = Base64.decode(json.getString("bigblob").getBytes("UTF-8"), 0);
byte[] imageAsBytes2 = Base64.decode(json.getString("bigblob2").getBytes("UTF-8"), 0);

– Then, decode the byte array as bitmap:
Bitmap bm1 = BitmapFactory.decodeByteArray(imageAsBytes1, 0, imageAsBytes1.length);

Bitmap bm2 = BitmapFactory.decodeByteArray(imageAsBytes2, 0, imageAsBytes2.length);

– Create the bitmap array:
Bitmap[] imgs = {bm1, bm2};

– Finally, create the instance of the pageradapter with the context as the video said, and then, load the array through a "setter" created on the ViewPagerAdapter.java class:

ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(InfoActivity.this);

viewPagerAdapter.setImages(imgs);

* Don't forget to set the adapter:
viewPager.setAdapter(viewPagerAdapter);

———————————————————————————————————————————
Another thing, you has to change some stuff on the ViewPagerAdapter.java class:

1.- The array datatype: private Bitmap[] images = {};
2.- On the @Override instantiateItem, change the "imageView.setImageResource(images[position]);" to -> "imageView.setImageBitmap(images[position]);"
3.- Create the setter and getters, so you will be able to send the bitmap array to the ViewPagerAdapter as I said on the "1.-".

One more time, thanks a lot buddy, it's nice to learn from people like you.

good job !!!

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageResource(int)' on a null object reference
this problem solve

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageResource(int)' on a null object reference can you help me with this error?

hi i'm follow your instruction thats work but why my image position not same with your image slider ,

How to set fit images

cont have slide 2,3