微信支付demo 出错

问题日志：

:app:mergeDebugResources

AAPT err(Facade for 1740491424) : No Delegate set : lost message:libpng error: Not a PNG file

Error: java.lang.RuntimeException: Some file crunching failed, see logs for details

:app:mergeDebugResources FAILED

FAILURE: Build failed with an exception.

* What went wrong:

Execution failed for task ':app:mergeDebugResources'.

> Error: java.lang.RuntimeException: Some file crunching failed, see logs for details

* Try:

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

BUILD FAILED

解决方法：

在build.gradle里加入

android {

......

aaptOptions {         cruncherEnabled = false     }

}