The red mark is what reason?

CodePudding user response:

Estimate is to import the wrong package version can't find the corresponding class

CodePudding user response:

Do you use AndroidX? Package is different, it takes AndroidX AndroidX. Core. The content. FileProvider

CodePudding user response:

refer to the second floor one salted fish's reply:

AndroidX do you use? Package is different, it takes AndroidX AndroidX. Core. The content. FileProvider

is not Androidstudio

CodePudding user response:

refer to the second floor one salted fish's reply:

AndroidX do you use? Package is different, it takes AndroidX AndroidX. Core. The content. FileProvider

this I've tried, also not line

CodePudding user response:

You put the build of the APP. Gradle posted see packets,

CodePudding user response:

In this class you can in the code value, see don't exist, may be you don't have the package

CodePudding user response:

refer to 6th floor zhang106209 response:

in this class you can in the code value, see don't exist, may be you have no guide packages

code values on this class is what mean?

CodePudding user response:

refer to the second floor one salted fish's reply:

AndroidX do you use? Package is different, it takes AndroidX AndroidX. Core. The content. FileProvider

I found later, thank you!

CodePudding user response:

refer to fifth floor one salted fish's reply:

your APP build. Gradle posted see packets,

hello has just been solved