Android Question makedir and makefile

[kuosda]

How to use ExternalStorage to create new folders and files in File.DirRootExternal

 

[mcqueccu]

Please check point 29

android.jar / targetSdkVersion / minSdkVersion

There are several versioned components that affect the compilation process and the runtime behavior of our apps. The purpose of this tutorial is to explain the differences between them and help you choose which version to use. Each Android version is mapped to an api level. You can see this...

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Check point #8,9,10

[B4X] Features that Erel recommends to avoid

Many things have changed in B4X and also in the underlying platforms. I will try to list here all kinds of (old) features that have better alternatives. B4X is backward compatible so these features still work. The recommendations are more relevant for new projects or when implementing new...

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[kuosda]

thinks!
about point 29
"It will not work with targetSdkVersion=30". Avoid using File.DirRootExternal. Either use File.DirInternal or RuntimePermissions.GetSafeDirDefaultExternal.
sdk>=30, it seems that there is a solution to find the ExternalStorage class

 

[mcqueccu]

Take a look at

SaveAs - Let the user select a target folder + list of other related methods

B4A + B4i example: https://www.b4x.com/android/forum/threads/b4x-texteditor-save-and-load-external-files.132731/#post-838166 List of classes or libraries that can be used to access secondary storages: ContentChooser (Phone libray) - allows the user to select a resource or file using external...

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ExternalStorage - Access SD cards and USB sticks

Before we start: External storage means a real sd card or a connected mass storage USB device. This class can also be used to access the secondary storage (File.DirRootExternal). This becomes relevant with newer versions of Android that restrict direct access. It has nothing to do with runtime...

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