Question

I would like to click a save button and go to a different layout file(layout_save).
I got an error message on the Button.on Click Listener() and says that con not be resolve to a type.

Here is my codes;

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_final_project);

    Button buttonOne = (Button) findViewById(R.id.button1);
    buttonOne.setOnClickListener(new Button.onClickListener(){
        public void onClick(view v){
            setContentView(R.layout.layout_save);

        }
    });

Answer 1

You don’t have to specify the instance of the onclicklistener inside the setOnClickListener method. All you need to do is just instantiate a new on click listener like this.

buttonOne.setOnClickListener(new OnClickListener(){
        public void onClick(View v){
            setContentView(R.layout.layout_save);

        }
    });

The onclicklistner already knows what instance it is from the set method.