This is my fcm_test.php code

foreach ($allTokens as $token) { echo $token . "
"; // // 发送 Firebase 通知到 FCM 令牌的代码开始 // // 通知的数据有效负载 $notification = [ 'title' => '通知的标题', 'body' => '这是通知的正文。', 'android' => [ 'imageUrl' => 'https://blog.pushwoosh.com/blog/content/images/2021/09/Android-12-Updates-for-Push-Notification-Senders---Pushwoosh.png' ], ]; // 创建 HTTP 请求的头部 $headers = [ 'Authorization: key=' . $serverKey, 'Content-Type: application/json' ]; // 创建 HTTP 请求的有效负载 $payload = [ 'to' => $token, 'notification' => $notification ]; // 将有效负载转换为 JSON $jsonPayload = json_encode($payload); try { // 初始化 cURL 会话 $ch = curl_init('https://fcm.googleapis.com/fcm/send'); // 设置 cURL 选项 curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonPayload); // 执行 cURL 会话 $response = curl_exec($ch); // 检查 cURL 错误 if ($response === false) { throw new Exception('cURL 错误: ' . curl_error($ch)); } // 打印响应（用于调试目的） echo '响应: ' . $response . PHP_EOL; // 关闭 cURL 会话 curl_close($ch); // 处理响应 if ($response === false) { throw new Exception('发送通知失败。'); } else { echo '通知发送成功。' . "

"; } } catch (Exception $e) { echo '错误: ' . $e->getMessage(); } // 发送 FCM 令牌的代码结束 }

I am able to get the title and body in Android notifications, but not the image. I tried various JSON syntaxes but none worked, I can only get the text.

When I use Firebase GUI, I can get the image.

When accessing images on Flutter UI, I use the following code:

print("${widget.message?.notification?.android?.imageUrl}");

If I'm wrong, please feel free to answer. This will be very helpful.