How to use same button with different functionality in different Fragments using same layout file in TabActivity

Question

I have a question from last few days. I basically have three fragments in a TabActivity, Fragment A, Fragment B and Fragment C. All three Fragments contain a list of CardView of approximately 14 CardViews in single Fragment. This three Fragment share same layouts with same cardview with same id. There is a button in each CardView and i want to start different activity's when clicked on that button. But I cant do it because id for button is same and I want to start activity's when that button is clicked from different Fragments. I am using RecyclerView for this. It means I have 14 buttons in a Fragment and there are three Fragments.

Answer 1

Implement on click listener in your activity. On each button click programatically do whatever changes you want to do in the layout..

Example below

public void onClick(View v)
{
    switch(v.getId())
    {
        case R.id.button1:
            // Do something 
            break;
        case R.id.button2:
            // Do something
            break;
        case R.id.button3:
            // Do something
    }
}

Answer 2

If the button is in recyclerView, you can set a click listener of that button in XML, which will be called in Your Activity. Now your recyclerView adapter , set a tag which will be the position of the cell to you your button.

holder.imageButton.setTag(position);

Now, in your main activity, create an integer variable named

int currentSelectedTab = 0;

and then do this on your TabChange listener.;

 mViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            selectedTab = position;
        }

        @Override
        public void onPageSelected(int position) {

        }

        @Override
        public void onPageScrollStateChanged(int state) {

        }
    });

Now you will always have the current selected tabPosition.

And in clicklistener in your Activity do this ::

  public void myOnClick(View v) {

if(current selectedTab == 1)
{

if(v.getId === R.id.btn1)
{

// it means btn of Fragment 1 is clicked
// same goes for other button clicks
// and for the index of button
// v.getTag() it will you which cell's button was clicked

 }

In your cardView xml :

 <ImageButton
    android:id="@+id/chapter_description"
    android:layout_width="36dp"
    android:onClick="myOnClick"
    android:layout_height="36dp"
    android:layout_alignParentBottom="true"
    android:layout_alignParentEnd="true"
    android:layout_alignParentRight="true"
    android:src="@drawable/description"
    android:background="@drawable/ripple_effect"/>