当你在项目中遇到“cannot resolve symbol 'FragmentActivity'”的错误时,这通常意味着你的项目没有正确导入或识别FragmentActivity类。以下是一些步骤来解决这个问题: 确认'FragmentActivity'所属的库或框架: FragmentActivity是Android开发中的一个类,它属于Android Support Library(现已被AndroidX库取代)。如果你正在使用...
问题描述: Cannot resolve method 'add' 问题分析: 1、需要清理IDEA的缓存。 解决办法:File->Invalidate Caches / Restart...->Invalidate and Restart->重新打开IDEA。 2、 使用BigDecimal::add时,实例不是BigDecimal,所以没有add方法。 ... Jsp中出现无法解析cannot resolve method setAttribute(““) ...
FragmentStateAdapter现在需要一个生命周期对象。添加了两个实用程序构造函数，以从FragmentActivity主机或片段...
error cannot resolve service of type why and how to solve it ? Error CS0234 - The type or namespace name 'AspNet' does not exist in the namespace 'Microsoft' (are you missing an assembly reference? error CS1061 C# '' does not contain a definition for '' and no extension method '' ...
[Android开发常见问题-16] FragmentActivity cannot be resolve to a type,只需要将android-support-v4.jar放到自己的libs目录下即可。如果ADT版本比较低,则放到libs之后还需要按照下图导入这个jar包。
[MonoDroid] at Android.Support.V4.App.FragmentActivity.n_OnCreate_Landroid_os_Bundle_ (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_savedInstanceState) [0x00011] in <7a2a36256f1648ecbd0c15a75bc5a349>:0 [MonoDroid] at (wrapper dynamic-method) System.Object:8...
Int32'. Please help urgent Unable to connect to web server 'IIS Express' Unable to Deploy .NET application Unable to go to the default route Unable to load the service index for source https://api.nuget.org/v3/index.json. Unable to resolve service for type ... while attempting to ...
Int32'. Please help urgent Unable to connect to web server 'IIS Express' Unable to Deploy .NET application Unable to go to the default route Unable to load the service index for source https://api.nuget.org/v3/index.json. Unable to resolve service for type ... while attempting to ...
Int32'. Please help urgent Unable to connect to web server 'IIS Express' Unable to Deploy .NET application Unable to go to the default route Unable to load the service index for source https://api.nuget.org/v3/index.json. Unable to resolve service for type ... while attempting to ...