Question

我正在尝试为Android实现推送通知。我想将相同的消息发送到多个电话。目前它可以发送到一部手机。我想从一个mysql数据库中获取注册密钥，并向所有这些手机发送一条消息。

问题是我对json和数组以及POST感到困惑。我可以通过另一个JSON对象发送JSON数组吗？如何在params.add(new BasicNameValuePair("regId", regkeys));中输入多个注册码？我试图让regkeys成为一个数组，但它没有用。我知道它必须以某种形式出现

{ "message":"some message here", "regIds": [ "dsdfsfet366767547", "63567356366reygh", "sgdgtwetwetsdgsdg", "sdgsdgsdgwet24t" ] }

但我不知道如何创建它。

Php代码

     $regId = $_POST["regId"];
     $message = $_POST["message"];
...
$registatoin_ids = array($regId);
    $message = array("price" => $message);
     $result = $gcm->send_notification($registatoin_ids, $message);
...
     public function send_notification($registatoin_ids, $message) {...}

Android代码

 String regkeys = regkey.getText().toString();
 String message = messg.getText().toString();

...

List<NameValuePair> params = new ArrayList<NameValuePair> ();
params.add(new BasicNameValuePair("regId", regkeys));
params.add(new BasicNameValuePair("message", message));

JSONObject json = parser2.makeHttpRequest(url, params);

...

 public class jParser2 {

static InputStream is = null;
static JSONObject jObject = null;
static String json = "";

public jParser2(){

}

public JSONObject makeHttpRequest(String url, List<NameValuePair> params){

try {
    DefaultHttpClient httpClient = new DefaultHttpClient();
    HttpPost httpPost = new HttpPost(url);

    httpPost.setEntity(new UrlEncodedFormEntity(params));

    HttpResponse httpResponse = httpClient.execute(httpPost);
    HttpEntity httpEntity = httpResponse.getEntity();
    is = httpEntity.getContent();

} catch (UnsupportedEncodingException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
} catch (ClientProtocolException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}
try {
    BufferedReader reader = new BufferedReader (new InputStreamReader (is, "iso-8859-1"), 8);

    StringBuilder sb = new StringBuilder();
    String line = null;
    while ((line = reader.readLine())!=null){
        sb.append(line+"\n");
    }
    is.close();
    json = sb.toString();
} catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();        
}   
try {
        jObject = new JSONObject(json);
} catch (JSONException e) {
        // TODO Auto-generated catch block
    e.printStackTrace();
}   

    return jObject;
}
  }

我的服务器到GCM代码。

public function send_notification($registatoin_ids, $message) {
// include config
include_once './config.php';

    // Set POST variables
    $url = 'https://android.googleapis.com/gcm/send';

    $fields = array(
        'registration_ids' => $registatoin_ids,
        'data' => $message,
    );

    $headers = array(
        'Authorization: key=' . GOOGLE_API_KEY,
        'Content-Type: application/json'
    );
    // Open connection
    $ch = curl_init();

    // Set the url, number of POST vars, POST data
    curl_setopt($ch, CURLOPT_URL, $url);

    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    // Disabling SSL Certificate support temporarly
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));

    // Execute post
    $result = curl_exec($ch);
    if ($result === FALSE) {
        die('Curl failed: ' . curl_error($ch));
    }

    // Close connection
    curl_close($ch);
    echo $result;
}

Answer 1

我不知道您的$gcm->send_notification函数是什么样的，但它应该是这样的：

$data = array( 'message' => 'some message' );
$ids = array( 'reg-id1', 'reg-id2' );
$payload = array(
                'registration_ids'  => $ids,
                'data'              => $data,
                );
$headers = array( 
                    'Authorization: key=' . $apiKey,
                    'Content-Type: application/json'
                );

请注意，为了将相同的消息发送到多个注册ID，请求的内容类型必须是JSON。注册ID在包含数组的registration_ids参数中发送，通知数据在包含字典的data参数内。

Answer 2

是的，您可以将带有regIds的数组放入JSON对象中并将JSON Objet放入Post：

List<NameValuePair> params = new ArrayList<NameValuePair> ();
params.add(new BasicNameValuePair("json", JsonObject));
httpPost.setEntity(new UrlEncodedFormEntity(params));

希望这会对你有所帮助。

Answer 3

我建议使用GSON。

现在，使用，创建一个类：

Class Messages {
    public String message;
    public ArrayList<String> regIDs;

    public void setMessage(String message) {
        this.message = message;
    }

    public ArrayList<String> getRegIDs() {
        return regIDs;
    }    
}

现在，当您想要向服务器发送一些数据时，请创建此类的新对象。

Messages messages = new Messages();
messages.setMessage("Some message here");
//Add all the regn IDs to the regIDs List. 
ArrayList<String> regIDs = messages.getRegIDs()
regIDs.add("regnID1");
regIDs.add("regnID2");
regIDs.add("regnID3");
regIDs.add("regnID4");

//Add as many IDs as you want. 
//then create a new GSON Object. 

Gson gson = new Gson();
String jsonString = gson.toJSON(messages);

现在jsonString将自动包含您指定格式的JSON字符串。因此，请使用jsonString变量的内容向您的服务器发送POST请求。然后在Php端，使用json_decode解码成一个数组并遍历regIDs数组以发送多个gcm消息。

如何通过POST或JSON发送多个字符串？我可以通过另一个JSON对象发送JSON数组吗？

3 个答案: