need help on android studio google map
<p>Error:Execution failed for task ':app:transformClassesWithDexForDebug'.</p>

<blockquote>
  <p>com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.dex.DexIndexOverflowException: method ID not in [0, 0xffff]: 65536</p>
</blockquote>

<p>above is the error message while i run the simulation on genymotion 
i updated all the api, actived the google+ for genymotion</p>

<p>i create a google map project from the default project from android studio. can anyone help me out from here?</p>

<p>try suggestion from google 
like downgrade the dependencies, add in the multidex true and etc but it still show this error.... yes, i have added the api key also</p>

<hr/>

<p>thanks everyone but i still having error after adding all the suggestions<br/>please see the image below<br/>
<a href="https://i.stack.imgur.com/qo4n5.png" rel="nofollow"><img src="https://i.stack.imgur.com/qo4n5.png" alt="enter image description here"></a></p>