Calling new Activity via an Imageview

Question

I need to call a new Activity through the click in a ImageView.

Follows my code:

final ImageView botaoAbrirMesas = (ImageView) findViewById(R.botoes_laucher.openMesas);

    botaoAbrirMesas.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            Intent it = new Intent();
            it.setClass(null, PrincipalActivity.class);

            startActivity(it);
        }
    });

However, when running the application terminates due to an error. This is the right way to use or I cannot use click in a ImageView?

Answer 1

I think the problem is that you pass null in the method setClass.

Replace your code with this:

Intent intent = new Intent(Main.this, PrincipalActivity.class);
startActivity(intent);  

Substitute Main.this for NomeDaSuaActividade.this

If you want to use the method setClass substitute null for NomeDaSuaActividade.this