Read and Write permission for storage and gallery usage for marshmallow

Question

I am developing an android app in which it is required to provide permission for Read and write external storage. My requirement is to select a picture from gallery and use

Answer 1

For writing a file in storage, First,need to add write permission in manifest.xml,

Then, In Android 6, it contains a permission system for certain tasks. Each application can request the required permission on runtime. So let’s open Activity class add below code for requesting runtime permission.

check your application has a runtime write permission using,

override fun onRequestPermissionsResult(requestCode: Int,
    permissions: Array,
    grantResults: IntArray) {

    when(requestCode)  {

        100 -> {
            if (grantResults.size > 0 && permissions[0] == Manifest.permission.WRITE_EXTERNAL_STORAGE) {
                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                
                }
            }

        }
    }

}