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copied!<p>You need to use bundle and pass appropriate parameter/or parameters from the calling app (i.e. click something in the app (TextView with a link)).</p> <p>Retrieve the parameter in the called app (Email app).</p> <p>You can send the name of the activity in the parameter.</p> <p>Now being in Email app(the called app) Click of back button navigate back to your calling application.</p> <p>Optionally you can save the state of activity from the caller program, as required.</p> <p>You need to use Bundle, and Intent to implement this logic.</p> <p>Code snippet:</p> <p>In the calling program, we need to store parameters/data required for back button functionality in the called program.</p> <p>Bundle bndleData = new Bundle(); Use putString(), putInt() methods of Bundle class.</p> <pre><code> String prefix = getPackageName().toString(); (this prefix can be stored in application level constants.java file as applicable) bndleData.putString("ParentActivity", this.getLocalClassName()); </code></pre> <p>Also store additional parameters if required bndleData.putString("paramName", valueofParamName); bndleData.putInt("IntChannelImage", chImageInt);</p> <pre><code> Intent intent = new Intent(v.getContext(), AMRChannelPlayer.class); intent.putExtra(prefix + "bndleChnlData", bndleData); startActivity(intent); </code></pre> <p>Caller Program: Retrive the data, activity nae from bundle and use it in back button implementation:</p> <p>prefix = getPackageName().toString(); Bundle extras = getIntent().getBundleExtra(prefix + "bndleData");</p> <p>String parentActivity = extras.getString("ParentActivity"); extras.getString("paramName");</p> <p>I hope this helps you.</p>

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