沉璧浮光

来自：《Error : BinderProxy@45d459c0 is not valid; is your activity running?》，《Anroid 异常：is not valid; is your activity running?》在显示对话框的时候遇到这个问题： BinderProxy@45d459c0 is not valid; is your activit

参考自：《Android RadioGroup中设置默认选中RadioButton 后,选中两个的问题 解决方法》问题：项目中遇到多个RadioGroup中单选RadioButton ,设置了默认选中第一个 . 然后就能选中两个RadioButton。解决：不要设置RadioButton的默认选中, 这样会使RadioButton一直处于选中状态。使用Radio

转载自：《how to prevent multiple instances of an activity when it is launched with different intents》problem:I've come across a bug in my application when it is launched using the "Open" but

转自：《Android Gradle Build Error:Some file crunching failed, see logs for details解决办法》错误日志：Error:java.lang.RuntimeException: Some file crunching failed, see logs for detailsLog：　　FAI

两个方法，但是方法1可能有很多人用不上：1、File->Other Settings->Default Project Structure，如果有SDKs选项，你就可以从中配置添加/修改源码版本了；2、利用方法1发现没有SDKs选项，还可以通过修改一个xml的配置文件进行源码关联：打开文件：C:\Users\{username}\.AndroidStudio2.2\config\opt

转载自：http://stackoverflow.com/questions/33696488/getting-bitmap-from-vector-drawableGetting Bitmap from vector drawableup votedown voteacceptedChecked on API: 17, 21

转载自：http://stackoverflow.com/questions/40160968/android-studio-error-failed-to-resolve-com-android-support-constraintconstr/40268563You need add check in, open Settings -> Appearance & Behavior ->