小编Ama*_*wal的帖子

我正在尝试从 Android 应用程序发送短信，编写了以下代码，但出现编译错误：“找不到符号变量 SEND_SMS”。我还导入了“android.Manifest.permission”但未解决。请帮我。

案例 R.id.SendSMS：

            // Here, thisActivity is the current activity
            if (ContextCompat.checkSelfPermission(this,
                    Manifest.permission.SEND_SMS)
                    != PackageManager.PERMISSION_GRANTED) {

                // Should we show an explanation?
                if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                        Manifest.permission.SEND_SMS)) {

                    // Show an expanation to the user *asynchronously* -- don't block
                    // this thread waiting for the user's response! After the user
                    // sees the explanation, try again to request the permission.

                } else {

                    // No explanation needed, we can request the permission.

                    ActivityCompat.requestPermissions(this,
                            new String[]{Manifest.permission.SEND_SMS},
                            MY_PERMISSIONS_REQUEST_SEND_SMS);

                    // MY_PERMISSIONS_REQUEST_READ_CONTACTS is …