Android 分多次（每次一个）请求权限时的onRequestPermissionsResult()方法

代码

@Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode){
            case 1:
                switch (permissions[0]){
                    case Manifest.permission.READ_CONTACTS://权限1
                        if (grantResults.length > 0 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
                            readContacts();
                        }else {
                            Toast.makeText(this, "You denied the permission", Toast.LENGTH_SHORT).show();
                        }
                        break;
                    case Manifest.permission.CALL_PHONE://权限2
                        if (grantResults.length > 0 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
                            call();
                        } else {
                            Toast.makeText(this, "You denied the permission", Toast.LENGTH_SHORT).show();
                        }
                        break;
                    default:
                }
                break;
            default:
        }
    }