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    <p>I think you should, when the <code>Activity</code> picture is displayed, try to call the <code>onBackPressed</code> method. </p> <pre><code>// back button pressed method @Override public void onBackPressed() { super.onBackPressed(); // new intent to call an activity that you choose Intent intent = new Intent(this, NewActivity.class); startActivity(intent); // finish the activity picture this.finish(); } </code></pre> <p>If you don't want to call an external <code>Activity</code>, you can hide the layout calling by the <code>Intent</code> as below: </p> <pre><code>// back button pressed method @Override public void onBackPressed() { super.onBackPressed(); // your layout with the picture is displayed, hide it if(MySecondView.getVisibility() == View.VISIBLE) MySecondView.setVisibility(View.Gone); // display the layout that you want MyDefaultView.setVisibility(View.VISIBLE); } </code></pre> <p>As I said below, try with a <strong>boolean</strong> that you initialize to false at the beginning of your <code>Class</code>. When you start the <code>Intent.ACTION_VIEW</code>, make this boolean to true: </p> <pre><code>public class Foo extends Activity { private boolean isSms = false; // some stuff Intent intent = new Intent(Intent.ACTION_VIEW); intent.setType("vnd.android-dir/mms-sms"); // ... startActivity(intent); // make your boolean to true isSms = true; // create the onBackPressed method @Override public void onBackPressed() { // check if the user is on the sms layout if(isSms) // do something else // do something else like finish(); your activity } } </code></pre> <p>Or you can try to use the <code>onKeyDown</code> method (see here: <a href="http://developer.android.com/reference/android/view/View.html#onKeyDown%28int,%20android.view.KeyEvent%29" rel="nofollow noreferrer">onKeyDown (int keyCode, KeyEvent event)</a>) as below: </p> <pre><code>public boolean onKeyDown(int keyCode, KeyEvent event) { if(keyCode==KeyEvent.KEYCODE_BACK &amp;&amp; event.getRepeatCount()==0) { // dome some stuff return true; } return super.onKeyDown(keyCode, event); } </code></pre> <p>You can see the diffence between these two methods here: <a href="https://stackoverflow.com/a/3558613/2668136">onBackPressed() not working</a> and on the website that I talk in the comments below.<br> Hope this will be useful. </p> <hr> <p><strong>UPDATE:</strong><br> A better way should make an startActivityForResult to start the Intent.ACTION_VIEW: </p> <pre><code>startActivityForResult(intent, 1); </code></pre> <p>And then, you return the cancel code like this: </p> <pre><code>protected void onActivityResult(int requestCode, int resultCode, Intent data) { if(requestCode != 1 &amp;&amp; resultCode == RESULT_CANCELED) { // do something } } </code></pre> <p>This is @FunkTheMonk, just above, who tells the good choice!</p>
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    1. COi don't have any different activity for sms..i am just passing intent for sms from listview activity..so where to place it is big question for me..
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    2. COPlace it in your Activity, everywhere you want, see this: http://android-developers.blogspot.fr/2009/12/back-and-other-hard-keys-three-stories.html. Maybe you can know if your activity is displayed with a boolean.
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