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Так вот моя проблема, что я пытаюсь сделать, это следующее:Использование GCM для обновления ImageView в ListView
У меня есть простой класс ListView, который получает информацию пункта (название пункта) из MySql DB через PHP-скрипт, и это отлично работает.
Другая часть элемента ListView - это ImageView. Он представляет собой 3 состояния, в которых может находиться элемент. Изображение зеленого светофора означает его «ОК», красный, «не в порядке», а серый означает «услуга недоступна». Триггер изменения состояния поступает из другого приложения (через gcm), и сообщение содержит значение -1, 0 или 1, которое я хочу использовать для запуска изменений ImageView.
Вот мой OnCreate метод для моей деятельности:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_channel_list);
mRegistrationProgressBar = (ProgressBar) findViewById(R.id.registrationProgressBar);
mRegistrationBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
mRegistrationProgressBar.setVisibility(ProgressBar.GONE);
SharedPreferences sharedPreferences =
PreferenceManager.getDefaultSharedPreferences(context);
boolean sentToken = sharedPreferences
.getBoolean(SENT_TOKEN_TO_SERVER, false);
if (sentToken) {
Log.i(TAG, getString(R.string.gcm_send_message));
} else {
Log.i(TAG, getString(R.string.token_error_message));
}
}
};
// Registering broadcast receiver
registerReceiver();
if (checkPlayServices()) {
Intent intent = new Intent(this, RegistrationIntentService.class);
startService(intent);
}
/*----------------------------------------------------------------------------------------*/
/*---------------------------------AsyncTask that makes the ListView ---------------------*/
/*----------------------------------------------------------------------------------------*/
PostResponseAsyncTask taskRead = new PostResponseAsyncTask(ChannelList.this, this);
taskRead.execute(SERVER_ADDRESS + "Script.php");
BindDictionary<Channel> dict = new BindDictionary<Channel>();
dict.addStringField(R.id.tvName, new StringExtractor<Channel>() {
@Override
public String getStringValue(Channel channel, int position) {
return channel.channel_name;
}
});
FunDapter<Channel> adapter = new FunDapter<>(
ChannelList.this, channelList, R.layout.layout_list, dict);
lvChannel = (ListView) findViewById(R.id.lvChannels);
lvChannel.setAdapter(adapter);
/*----------------------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------------------*/
}
Тогда у меня есть класс GcmListenerService:
public class MyGcmListenerService extends GcmListenerService {
private static final String TAG = "MyGcmListenerService";
/**
* Called when message is received.
*
* @param from SenderID of the sender.
* @param data Data bundle containing message data as key/value pairs.
* For Set of keys use data.keySet().
*/
// [START receive_message]
@Override
public void onMessageReceived(String from, Bundle data) {
String message = data.getString("message");
String commercial = data.getString("commercial");
Log.d(TAG, "From: " + from);
Log.d(TAG, "Message: " + message);
Log.d(TAG, "Commercial: " + commercial);
if (from.startsWith("/topics/")) {
// message received from some topic.
} else {
// normal downstream message.
}
// [START_EXCLUDE]
/**
* Production applications would usually process the message here.
* Eg: - Syncing with server.
* - Store message in local database.
* - Update UI.
*/
/**
* In some cases it may be useful to show a notification indicating to the user
* that a message was received.
*/
sendNotification(message);
// [END_EXCLUDE]
}
// [END receive_message]
/**
* Create and show a simple notification containing the received GCM message.
*
* @param message GCM message received.
*/
private void sendNotification(String message) {
Intent intent = new Intent(this, ChannelList.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 , intent, // 0 => Request code
PendingIntent.FLAG_ONE_SHOT);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("GCM Message")
.setContentText(message)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0 , notificationBuilder.build()); // 0 => ID of notification
}
}
Тогда у меня есть класс RegistrationIntentService:
public class RegistrationIntentService extends IntentService {
private static final String TAG = "RegIntentService";
private static final String[] TOPICS = {"global"};
public static final String SENT_TOKEN_TO_SERVER = "sentTokenToServer";
public static final String REGISTRATION_COMPLETE = "registrationComplete";
public RegistrationIntentService() {
super(TAG);
}
@Override
protected void onHandleIntent(Intent intent) {
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
try {
// [START register_for_gcm]
// Initially this call goes out to the network to retrieve the token, subsequent calls
// are local.
// R.string.gcm_defaultSenderId (the Sender ID) is typically derived from google-services.json.
// See https://developers.google.com/cloud-messaging/android/start for details on this file.
// [START get_token]
InstanceID instanceID = InstanceID.getInstance(this);
String token = instanceID.getToken(getString(R.string.gcm_defaultSenderId),
GoogleCloudMessaging.INSTANCE_ID_SCOPE, null);
// [END get_token]
Log.i(TAG, "GCM Registration Token: " + token);
// TODO: Implement this method to send any registration to your app's servers.
sendRegistrationToServer(token);
// Subscribe to topic channels
subscribeTopics(token);
// You should store a boolean that indicates whether the generated token has been
// sent to your server. If the boolean is false, send the token to your server,
// otherwise your server should have already received the token.
sharedPreferences.edit().putBoolean(SENT_TOKEN_TO_SERVER, true).apply();
// [END register_for_gcm]
} catch (Exception e) {
Log.d(TAG, "Failed to complete token refresh", e);
// If an exception happens while fetching the new token or updating our registration data
// on a third-party server, this ensures that we'll attempt the update at a later time.
sharedPreferences.edit().putBoolean(SENT_TOKEN_TO_SERVER, false).apply();
}
// Notify UI that registration has completed, so the progress indicator can be hidden.
Intent registrationComplete = new Intent(REGISTRATION_COMPLETE);
LocalBroadcastManager.getInstance(this).sendBroadcast(registrationComplete);
}
/**
* Persist registration to third-party servers.
*
* Modify this method to associate the user's GCM registration token with any server-side account
* maintained by your application.
*
* @param token The new token.
*/
private void sendRegistrationToServer(String token) {
// Add custom implementation, as needed.
}
/**
* Subscribe to any GCM topics of interest, as defined by the TOPICS constant.
*
* @param token GCM token
* @throws IOException if unable to reach the GCM PubSub service
*/
// [START subscribe_topics]
private void subscribeTopics(String token) throws IOException {
GcmPubSub pubSub = GcmPubSub.getInstance(this);
for (String topic : TOPICS) {
pubSub.subscribe(token, "/topics/" + topic, null);
}
}
// [END subscribe_topics]
}
InstanceIDListenerService :
public class MyInstanceIDListenerService extends InstanceIDListenerService {
private static final String TAG = "MyInstanceIDLS";
/**
* Called if InstanceID token is updated. This may occur if the security of
* the previous token had been compromised. This call is initiated by the
* InstanceID provider.
*/
// [START refresh_token]
@Override
public void onTokenRefresh() {
// Fetch updated Instance ID token and notify our app's server of any changes (if applicable).
Intent intent = new Intent(this, RegistrationIntentService.class);
startService(intent);
}
// [END refresh_token]
}
И AndroidManifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.tumex.useralpha"
xmlns:tools="http://schemas.android.com/tools"
>
<uses-permission android:name="android.permission.INTERNET"/>
<!-- [START gcm_permission] -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<!-- [END gcm_permission] -->
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:replace="@android:icon"
>
<activity android:name=".Login">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".ChannelList"></activity>
<!-- [START gcm_receiver] -->
<receiver
android:name="com.google.android.gms.gcm.GcmReceiver"
android:exported="true"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="gcm.play.android.samples.com.gcmquickstart" />
</intent-filter>
</receiver>
<!-- [END gcm_receiver] -->
<!-- [START gcm_listener] -->
<service
android:name="com.tumex.useralpha.MyGcmListenerService"
android:exported="false" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
</intent-filter>
</service>
<!-- [END gcm_listener] -->
<!-- [START instanceId_listener] -->
<service
android:name="com.tumex.useralpha.MyInstanceIDListenerService"
android:exported="false">
<intent-filter>
<action android:name="com.google.android.gms.iid.InstanceID"/>
</intent-filter>
</service>
<!-- [END instanceId_listener] -->
<service
android:name="com.tumex.useralpha.RegistrationIntentService"
android:exported="false">
</service>
</application>
Так как я могу идти об этом, сделать ImageView реагировать на значения, полученные от сообщения г см? Если я забыл все, что может помочь в решении моей проблемы, пожалуйста, дайте мне знать. Спасибо