In this article, I will show you how to check and ask for storage permission.
You usually don’t need this permission if your app goes on Play Store.
Declear permission
1
| <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />
|
Check and ask for permission
Environment.isExternalStorageManager() only available after VERSION_CODES.R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
| class YourActivity {
private fun checkPlatformPermission() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
if (Environment.isExternalStorageManager()) {
setupAfterPermissionChecked()
} else {
check30AndAfter()
}
} else {
setupAfterPermissionChecked()
}
}
@RequiresApi(api = Build.VERSION_CODES.R)
private fun check30AndAfter() {
try {
Intent(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION).apply {
addCategory("android.intent.category.DEFAULT")
data = Uri.parse("package:${applicationContext.packageName}")
startActivityForResult(this, REQUEST_CODE_ALL_FILE_ACCESS)
}
} catch (e: Exception) {
Intent().apply {
action = Settings.ACTION_MANAGE_ALL_FILES_ACCESS_PERMISSION
startActivityForResult(this, REQUEST_CODE_ALL_FILE_ACCESS)
}
}
}
protected override fun onActivityResult(
requestCode: Int, resultCode: Int, @Nullable data: Intent?
) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == REQUEST_CODE_ALL_FILE_ACCESS) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
if (Environment.isExternalStorageManager()) {
setupAfterPermissionChecked()
} else {
checkPlatformPermission()
}
}
}
}
fun setupAfterPermissionChecked() {
}
companion object {
private const val REQUEST_CODE_ALL_FILE_ACCESS = 404
}
}
|
Reference
Manage all files on a storage device
File.listFiles() is returning null in android 11