检查读写权限

// Storage Permissionsprivate
static
final
int
REQUEST_EXTERNAL_STORAGE = 1;private
static
String[] PERMISSIONS_STORAGE = { Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};//
Check if we have write permissionint
permission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);if
(permission != PackageManager.PERMISSION_GRANTED) { // We don't have permission so prompt the user
ActivityCompat.requestPermissions( activity, PERMISSIONS_STORAGE, REQUEST_EXTERNAL_STORAGE ); }