How do I get a button to open another activity?

Question

I\'ve added a button to my activity XML file and I can\'t get it to open my other activity. Can some please tell me step by step on how to do this?

Answer 1

A. Make sure your other activity is declared in manifest:

All activities must be declared in manifest, even if they do not have an intent filter assigned to them.

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B. In your MainActivity do something like this:

Button btn = (Button)findViewById(R.id.open_activity_button);    

btn.setOnClickListener(new View.OnClickListener() {         
        @Override
        public void onClick(View v) {
            startActivity(new Intent(MainActivity.this, MyOtherActivity.class));
        }
});