How To Update Linearlayout Child View Programmatically In Android?

I have created linearylayout programatically. where it has multiple rows created having white background. Now if I click on any row then only that row's imageview icon should be ch

Solution 1:

No, there is no substitute for notifyDataSetChanged(), you have to manually inform your ImageViews of that change.

You could iterate like this, as soon as you have a change:

for(int i= 0; i < ll_ethnicity.getChildCount(); i++){
    ImageView iv = (ImageView) ((ViewGroup)ll_ethnicity.getChildAt(i)).getChildAt(0);
    // new background because something has changed
    // check if it's not the imageView you just clicked because you don't want to change its background
    iv.setBackground(...);
}

For better performance you may also create an HashMap with your ImageViews and later access it to change some of them as you see fit.

Solution 2:

I believe what you're looking for is View.invalidate() method. It tells the application that this view is no longer correct, and it will be redrawn when possible. Call this at the end of the onClick method.