当Android studio 新建项目或重启后,出现如下的错误
错误代码如下:
Error:Execution failed for task :app:preDebugAndroidTestBuild.
> Conflict with dependency com.android.support:support-annotations in project :app. Resolved versions for app (26.1.0) and …
初始化TextView或其他控件的时候,报错:
Attempt to invoke virtual method void android.widget.TextView.setText(java.lang.CharSequence) on a null object reference 这个空指针异常是由于找不到Layout中的TextView控件,需要检查ID命名以…
The following example shows how you can add custom animation and effects when displaying a tool tip in Flex<?xml version"1.0" encoding"utf-8"?><!--http://blog.flexexamples.com/2007/09/04/adding-animations-and-effects-to-flex-…