是否可以在最低SDK <23时设置checkSelfPermission？

Question

Android-M中的新运行时权限要求最低23个API级别,但我的项目中仍需要最低16个API级别.

那么,如何使这个代码更向前兼容？

问候

Answer 1

使用ContextCompat.checkSelfPermission() ,, ActivityCompat.requestPermissions()和ActivityCompat.shouldShowPermissionRequestRationale(),从support-v4库(v23或更高版本).这些是向后兼容的; 如果你是在一个旧版本的Android上运行,他们会"做正确的事"(例如,返回PackageManager.PERMISSION_GRANTED了ContextCompat.checkSelfPermission()).

Answer 2

只需在获得检查权限之前检查您的android版本：

 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                    // TODO: Consider calling
                    //    public void requestPermissions(@NonNull String[] permissions, int requestCode)
                    // here to request the missing permissions, and then overriding
                    //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
                    //                                          int[] grantResults)
                    // to handle the case where the user grants the permission. See the documentation
                    // for Activity#requestPermissions for more details.
                    return;
                }
            }else{
              //Do Your Stuff
           }