这是一个详细的答案，我相信如果您仔细遵循它。你会解决你的问题。
当您从 Firebase 发送 notification 时，此方法首先运行
public class FirebaseMessageService extends FirebaseMessagingService {
private static final String TAG = "MyFirebaseMsgService";
Map<String, String> data;
// [START receive_message]
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
if (remoteMessage.getData().size() > 0) {
removeUserInfoByKeyAsStatic(getApplicationContext(), USER_KNOW_CREATED_EVENT_NOTIFICATION_DATA);
Log.d(TAG, "Message data payload: " + remoteMessage.getData());
data = remoteMessage.getData();
HashMap<String, String> copyData = new HashMap<>(data);
//Calling method to generate notification
sendNotification(data.get("body"), data.get("title"), copyData);
}
}
然后你运行上面的sendNotification(..) 方法。在这种方法中，我将notification data 设置为SharedPref。不要冒犯它。我们稍后会在使用时立即删除它。
我使用我的login data 并根据我的roleID 将intent 设置为不同的Activity
private void sendNotification(String messageBody, String messageTitle, HashMap<String, String> data) {
// this methods checks my notification data is null ? isNullOrEmptyExt : "simple java is null control method"
if (!isNullOrEmptyExt(data.get("data"))) {
Intent intent;
final User myInfos = getMyInfos(getApplicationContext()); // this gives me login user data.
boolean isConsumerOrVolunteer = myInfos.getRoleID() == Constants.ROLES.CONSUMER || myInfos.getRoleID() == Constants.ROLES.VOLUNTEER;
// I want to show here. You can select diffrent Activity with your data..
if (isConsumerOrVolunteer) {
// this set my notification data to SharedPref
setUserInfoByKeyAsStatic(getApplicationContext(), USER_KNOW_CREATED_EVENT_NOTIFICATION_DATA, data.get("data"));
intent = new Intent(this, EventListActivity.class);
} else {
intent = new Intent(this, ProducerActivity.class);
}
// after from here are the generally same. tricks above
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
PendingIntent.FLAG_ONE_SHOT);
String channelId = getString(R.string.default_notification_channel_id);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder =
new NotificationCompat.Builder(this, channelId)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(messageTitle)
.setContentText(messageBody)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// Since android Oreo notification channel is needed.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(channelId,
"Channel human readable title",
NotificationManager.IMPORTANCE_DEFAULT);
notificationManager.createNotificationChannel(channel);
}
notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
}
}
当您发送notification 时，上述两种方法都会运行。所以之后你会点击手机上的通知..对..这个点击操作会打开你之前在sendNotification(..)方法中设置的Intent(ActivityName)。
例如，您点击通知，您的ProducerActivity 或EventListActivity 就会打开..
如果您的角色是消费者或志愿者（根据我的应用角色），您将notification data 设置为SharedPref
boolean isConsumerOrVolunteer = myInfos.getRoleID() == Constants.ROLES.CONSUMER || myInfos.getRoleID() == Constants.ROLES.VOLUNTEER;
// I want to show here. You can select diffrent Activity with your data..
if (isConsumerOrVolunteer) {
// this set my notification data to SharedPref
setUserInfoByKeyAsStatic(getApplicationContext(), USER_KNOW_CREATED_EVENT_NOTIFICATION_DATA, data.get("data"));
intent = new Intent(this, EventListActivity.class);
} else {
intent = new Intent(this, ProducerActivity.class);
}
所以你打开了EventListActivity。让我们看看EventListActivity会做什么
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_event_list_main);
GsonBuilder gsonBuilder = new GsonBuilder();
gson = gsonBuilder.create();
// this gives me data from `SharePref`
String notificationEventDataString = getUserInfoByKeyAsStatic(this, USER_KNOW_CREATED_EVENT_NOTIFICATION_DATA);
// then check the datastring that comes from SharedPref - simple java null check method
if(!isNullOrEmptyExt(notificationEventDataString)){
Bundle bundle = new Bundle();
bundle.putParcelable(EVENT, gson.fromJson(notificationEventDataString, Event.class));
removeUserInfoByKeyAsStatic(this, USER_KNOW_CREATED_EVENT_NOTIFICATION_DATA);
openFragmentWithoutAnimation(this, R.id.drawer_layout, bundle, EventPreviewFragment.class, EVENT_PREVIEW_FRAGMENT);
}
您从 SharedPref 获取数据。这不会为空，因为当您收到 notfication 时，我们已经在 sendNotification(..) 方法中设置了它。
所以你把你的data 放到bundle 并用bundle data 打开Fragment。在您删除包含我的notification data 的SharedPref 数据后立即
我还与您分享我的自定义方法
这是片段打开方法
public static void openFragmentWithoutAnimation(Context context, int replaceLayout, Bundle bundle, Class<?> fragment, String fragmentTag) {
Fragment dynamicFragment = null;
try {
Class<?> clazz = Class.forName(fragment.getName());
dynamicFragment = (Fragment) clazz.newInstance();
System.out.println(clazz.getSuperclass());
System.out.println(clazz.getName());
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
AppCompatActivity activity = null;
if (context instanceof AppCompatActivity) {
activity = ((AppCompatActivity) context);
}
if (activity.getSupportFragmentManager().findFragmentByTag(fragmentTag) == null) {
FragmentTransaction transaction = activity.getSupportFragmentManager().beginTransaction();
if (bundle != null) {
dynamicFragment.setArguments(bundle);
}
transaction.add(replaceLayout, dynamicFragment, fragmentTag);
transaction.addToBackStack(fragmentTag);
transaction.commit();
}
}
这些是 SharedPref 设置和获取方法
public static void setUserInfoByKeyAsStatic(Context context, String key, String value){
final SharedPreferences prefs = context.getSharedPreferences(
USER_INFO_PREFS_KEY, Context.MODE_PRIVATE);// Saved token can be accessed only from this app or other apps that shared same id with this app.
SharedPreferences.Editor editor = prefs.edit();
editor.putString(key, value);
editor.apply();
}
public static String getUserInfoByKeyAsStatic(Context context, String key){
final SharedPreferences controlPrefs = context.getSharedPreferences(
USER_INFO_PREFS_KEY, Context.MODE_PRIVATE);
return controlPrefs.getString(key,null);
}
这些是空检查方法
public static boolean isNullOrEmpty(String value){
if(value == null){
return true;
}else return value.isEmpty() || value.equals("null");
}
public static boolean isNullOrEmptyExt(String value){
if(value == null){
return true;
}else return value.isEmpty() || value.equals("null") || value.equals(JSON_ARRAY_EMPTY) || value.equals(JSON_OBJECT_EMPTY);
}