android-external-storage

Android Open External Storage directory(sdcard) for storing file

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I had been having the exact same problem! To get the internal SD card you can use String extStore = System.getenv(“EXTERNAL_STORAGE”); File f_exts = new File(extStore); To get the external SD card you can use String secStore = System.getenv(“SECONDARY_STORAGE”); File f_secs = new File(secStore); On running the code extStore = “/storage/emulated/legacy” secStore = “/storage/extSdCarcd” works … Read more

Android 10: What are my options to save files on external storage into a directory called “/sdcard/my-app/”

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In Android Q direct File access is disabled by default for the apps outside their private folders. Here few strategies you can use in your case: Use the manifest option requestLegacyExternalStorage to have the old behavior but it won’t work anymore with Android R, so it’s really a short term solution; Save your files using … Read more

Android: mkdirs()/mkdir() on external storage returns false

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I got the same problem,and I am sure I had put the permission tag in the right place,but mkdirs didn’t work yet, my system is Android 6.0, I resolve it now , you can check as below: make sure your put the permission tag in . open “setting/application” in your phone,check your application’s permission(I found … Read more

How does storage access change on Android 6?

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Let me answer Adoptable Storage Devices related questions: Suppose the user has chosen to use “Adoptable Storage Devices”, what does it mean for the various functions that retrieve the paths of the app’s files? For example : getFilesDir, getExternalFilesDir,… ? Would the oder of getExternalFilesDirs change because of it? When user choose to use SD … Read more

Universal way to write to external SD card on Android

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Summary You can grant read/write access to external SD card on the different api levels (API23+ at run time). Since KitKat, permissions are not necessary if you use app-specific directories, required otherwise. Universal way: The history says that there is no universal way to write to external SD card but continues… This fact is demonstrated … Read more

READ_EXTERNAL_STORAGE permission for Android

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You have two solutions for your problem. The quick one is to lower targetApi to 22 (build.gradle file). Second is to use new and wonderful ask-for-permission model: if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { // Should we show an explanation? if (shouldShowRequestPermissionRationale( Manifest.permission.READ_EXTERNAL_STORAGE)) { // Explain to the user why we need to read the contacts } … Read more

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