[英]Problems to import ProgressDialog class
I want to use ProgressDialog
in a project, but I can not import that class into my MainActivity.java
.我想在项目中使用
ProgressDialog
,但我无法将该类导入到我的MainActivity.java
。
When I try to write import android.app.ProgressDialog;
当我尝试编写
import android.app.ProgressDialog;
the line of code gets hidden.代码行被隐藏。
This problem occurs in all projects, even a new and empty project.这个问题出现在所有项目中,即使是一个新的空项目。
The problem was solved.问题解决了。
I deleted the android studio
and also我删除了
android studio
,也删除了
(important -->) (重要-->)
deleted the gradle
folder and the android studio 3.2
folder and reinstalled android studio
.删除
gradle
文件夹和android studio 3.2
文件夹并重新安装android studio
。
Finally my problem was resolved.最后我的问题解决了。
Screenshot for gradle & androidstudio folders gradle 和 androidstudio 文件夹的屏幕截图
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