[英]Android GCM: sendRegistrationIdToBackend syntax error on token void
我正在追蹤google提供的android GCM教程,並且出現以下錯誤:
在線上:
private void sendRegistrationIdToBackend() {
// Your implementation here.
}
令牌“無效”的語法錯誤,@預期。
語法錯誤插入“枚舉標識符”以完成EnumHeader。
使用,編譯器1.6
非常感謝。
整個功能:
private void registerInBackground() {
new AsyncTask() {
@Override
protected String doInBackground(Void... params) {
String msg = "";
try {
if (gcm == null) {
gcm = GoogleCloudMessaging.getInstance(context);
}
regid = gcm.register(SENDER_ID);
msg = "Device registered, registration ID=" + regid;
// You should send the registration ID to your server over HTTP,
// so it can use GCM/HTTP or CCS to send messages to your app.
// The request to your server should be authenticated if your app
// is using accounts.
sendRegistrationIdToBackend();
// For this demo: we don't need to send it because the device
// will send upstream messages to a server that echo back the
// message using the 'from' address in the message.
// Persist the regID - no need to register again.
storeRegistrationId(context, regid);
} catch (IOException ex) {
msg = "Error :" + ex.getMessage();
// If there is an error, don't just keep trying to register.
// Require the user to click a button again, or perform
// exponential back-off.
}
return msg;
}
@Override
protected void onPostExecute(String msg) {
mDisplay.append(msg + "\n");
}
}.execute(null, null, null);
/**
* Sends the registration ID to your server over HTTP, so it can use GCM/HTTP
* or CCS to send messages to your app. Not needed for this demo since the
* device sends upstream messages to a server that echoes back the message
* using the 'from' address in the message.
*/
private void sendRegistrationIdToBackend() {
// Your implementation here.
}
}
似乎您忘記了關閉registerInBackground()
方法。
在}.execute(null, null, null);
之后添加}
}.execute(null, null, null);
另一種查看方法是將private void sendRegistrationIdToBackend() {}
放在registerInBackground()
方法內,這是錯誤的。
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