从列表视图活动中选择一个选项后，如何返回主活动

Question

I have two activities one is main activity and another is having list of cities. I want to go back to main activity when i choose any option from the second activity. i am attaching the screen shots of my activities. please help me thanks in advance

Answer 1

You should read about Activity class

Activity class in Android has method

        startActivityForResult();

You should use it And onClick() listner in your second Activity(list) Where you will setResult() and will finish() your activity with list

Answer 2

You have three ways to do that

1. finish your current acitvity by calling finish()
2. go back to the main activity by calling onBackPressed()
3. go to the main activity by calling Intent i = new Intent(this, MainActivity.class); startActivityForResult(i, 1); Intent i = new Intent(this, MainActivity.class); startActivityForResult(i, 1);

You can put one of them inside your click event

Answer 3

If you simply need to go back use this:

myList.setOnItemClickListener(new OnItemClickListener()
{
  @Override
  public void onItemClick(AdapterView<?> adapter, View v, int position,
        long arg3) 
  {
     finish();
  }
});

if you need something to be passed to the first activity, you can call from mainActivity the startActivityForResult() , here is the doc.