Problm integration of braintree payment gatway in ionic

After adding braintree plugin this error is occure:


FAILURE: Build failed with an exception.

  • What went wrong:
    Execution failed for task ‘:app:transformClassesWithDexBuilderForDebug’. java.lang.IllegalStateExce
ption: Dex archives: setting .DEX extension only for .CLASS files

  • Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug
    option to get more log output.

  • Get more help at

at ChildProcess.whenDone (C:\Riya work\eatsie\platforms\android\cordova\node
at ChildProcess.emit (events.js:180:13)
at maybeClose (internal/child_process.js:936:16)
at Process.ChildProcess._handle.onexit (internal/child_process.js:220:5)
(node:5164) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This
error originated either by throwing inside of an async function without a catch
block, or by rejecting a promise which was not handled with .catch(). (rejection
id: 1)
(node:5164) [DEP0018] DeprecationWarning: Unhandled promise rejections are depre
cated. In the future, promise rejections that are not handled will terminate the
Node.js process with a non-zero exit code.

can anyone provide full code for braintree payment gateway card payment for ionic.