Modify Versioncode and Versionname in Android studio

Modify Versioncode and Versionname in Android studio
Most wrote a new version of the software ready to publish to the application platform, but the value of Versioncode and Versionname has been modified unsuccessfully, on the internet for a long time to find a solution.
Online method:
Modify in Androidmanifest.xml file

<manifest xmlns:android= "http://schemas.android.com/apk/res/android"    android:versioncode= "2"    Android : Versionname= "1.1"    package= "Com.example.telerecorderv2.app"    >

Changed a lot of times or failed.
The correct method is:
Modify the value inside the Build.gradle

Apply plugin: ' Android ' Android {    compilesdkversion    buildtoolsversion ' 19.0.3 '    defaultconfig {        Minsdkversion        targetsdkversion        versioncode 2        versionname "1.1"    }    buildtypes {        Release {            Runproguard false            proguardfiles getdefaultproguardfile (' proguard-android.txt '), ' Proguard-rules.txt '}}    }

Modify Versioncode and Versionname in Android studio