MainActivity.java

package com.mycompany.myapp4;

public class MainActivity extends Activity {
    boolean isExpanded = false;
    LinearLayout moreDataLayout;
    private CardView mCard;
    private TextView TxtOne, HiddenTxtTwo, viewMore;
    @Override
    protected void onCreate(Bundle savedInstanceState)  {   super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        viewMore = findViewById(R.id.viewMoreText); moreDataLayout=findViewById(R.id.moreDataLayout);   mCard=findViewById(R.id.stateDataCard); TxtOne=findViewById(R.id.txtOne);   HiddenTxtTwo=findViewById(R.id.txtTwo);
        mCard.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    if (isExpanded) {   TransitionManager.beginDelayedTransition(mCard, new AutoTransition());  moreDataLayout.setVisibility(View.GONE);    viewMore.setVisibility(View.VISIBLE);
                        isExpanded = false;
                    } else {    TransitionManager.beginDelayedTransition(mCard, new AutoTransition());  viewMore.setVisibility(View.GONE);  moreDataLayout.setVisibility(View.VISIBLE);
                        isExpanded = true;
                    }
                }
            });
    }
    }