How do I switch which is already in a fragment to move from one fragment to another (Java) in Androi-CodePudding

I have linked a switch to shift from Fragment1 to Fragment2 but I do not know how to return to Fragment1 if the switch is clicked again.

CodePudding user response：

Do not put the switch inside fragment. You should include the switch in parent layout and change the fragment when switch is clicked.

For eg;

You include switch in linear layout below that layout you have framelayout in which you are committing the fragments.

CodePudding user response：

A possible solution: use switch.setOnCheckedChangeListener and transaction.replace. For example:

public class MainActivity extends Activity implements CompoundButton.OnCheckedChangeListener {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    fTrans.add(R.id.your_fragment_container, frag1);

    Switch switch = findViewById(R.id.switch);
    if (switch != null) {
        switch.setOnCheckedChangeListener(this);
    }
    frag1 = new Fragment1();
    frag2 = new Fragment2();
}

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        fTrans = getFragmentManager().beginTransaction();
        if(isChecked){
            fTrans.replace(R.id.your_fragment_container, frag2);
        }else{
            fTrans.replace(R.id.your_fragment_container, frag1);
        }
}

}

R.id.your_fragment_container is a layout for your two fragments