android - How to close an activity on button click?

Question

I want a button click to close an Activity. I am new to intents and and a little confused. This is ActivityOne which keeps a track of life cycle.
On a button press, it opens ActivityTwo and puts ActivityOne in background.
This works fine when I used this intent in my onClickListener:

Intent myIntent = new Intent(ActivityOne.this, ActivityTwo.class); ActivityOne.this.startActivity(myIntent); 

In ActivityTwo I need to use intents and finish() method to close the activity. I tried to Google it and I thought this might work:

Intent myIntent2 = new Intent(getApplicationContext(), ActivityTwo.class); ActivityTwo.this.finish(myIntent2); 

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It didn't work the full code is below:

public class ActivityOne extends Activity {      // ...      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_one);          // ...          Button launchActivityTwoButton = (Button) findViewById(R.id.bLaunchActivityTwo);          launchActivityTwoButton.setOnClickListener(new OnClickListener() {              @Override             public void onClick(View v) {                 // TODO:                 // Launch Activity Two                 // Hint: use Context's startActivity() method                  // Create an intent stating which Activity you would like to start                 Intent myIntent = new Intent(ActivityOne.this, ActivityTwo.class);                  // Launch the Activity using the intent                 ActivityOne.this.startActivity(myIntent);                            }         });          // ...     } } 

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Activity 2:

public class ActivityTwo extends Activity {          // ...      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_two);          // ...          Button closeButton = (Button) findViewById(R.id.bClose);          closeButton.setOnClickListener(new OnClickListener() {              @Override             public void onClick(View v) {                  // TODO:                 // This function closes Activity Two                 // Hint: use Context's finish() method                 Intent myIntent2 = new Intent(getApplicationContext(), ActivityTwo.class);                 ActivityTwo.this.finish(myIntent2);             }         });         // ...     } } 

Answer 1

You want to close ActivityTwo when a button is clicked? Just use finish();

Full code for the button listener in ActivityTwo would be:

Button closeButton = (Button) findViewById(R.id.bClose);  closeButton.setOnClickListener(new OnClickListener() {      @Override     public void onClick(View v) {          // TODO:         // This function closes Activity Two         // Hint: use Context's finish() method         finish();     } });