更新关注逻辑

app/src/main/java/com/aiosman/ravenow/ui/profile/AccountProfileViewModel.kt

@@ -12,7 +12,10 @@ import com.aiosman.ravenow.entity.AccountProfileEntity
 import com.aiosman.ravenow.entity.MomentEntity
 import com.aiosman.ravenow.entity.MomentLoader
 import com.aiosman.ravenow.entity.MomentLoaderExtraArgs
+import com.aiosman.ravenow.event.FollowChangeEvent
 import kotlinx.coroutines.launch
+import org.greenrobot.eventbus.EventBus
+import org.greenrobot.eventbus.Subscribe
 
 
 class AccountProfileViewModel : ViewModel() {
@@ -27,6 +30,9 @@ class AccountProfileViewModel : ViewModel() {
         }
     }
     var moments by mutableStateOf<List<MomentEntity>>(listOf())
+    init {
+        EventBus.getDefault().register(this)
+    }
 
     fun loadProfile(id: String, pullRefresh: Boolean = false) {
         viewModelScope.launch {
@@ -47,19 +53,23 @@ class AccountProfileViewModel : ViewModel() {
             }
         }
     }
-
+    @Subscribe
+    fun onFollowChangeEvent(event: FollowChangeEvent) {
+        if (event.userId == profile?.id) {
+            profile = profile?.copy(followerCount = profile!!.followerCount + if (event.isFollow) 1 else -1, isFollowing = event.isFollow)
+        }
+    }
     fun followUser(userId: String) {
         viewModelScope.launch {
             userService.followUser(userId)
-            profile = profile?.copy(followerCount = profile!!.followerCount + 1, isFollowing = true)
+            EventBus.getDefault().post(FollowChangeEvent(userId.toInt(), true))
         }
     }
 
     fun unFollowUser(userId: String) {
         viewModelScope.launch {
             userService.unFollowUser(userId)
-            profile =
-                profile?.copy(followerCount = profile!!.followerCount - 1, isFollowing = false)
+            EventBus.getDefault().post(FollowChangeEvent(userId.toInt(), false))
         }
     }
 
@@ -67,4 +77,9 @@ class AccountProfileViewModel : ViewModel() {
     val nickName get() = profile?.nickName ?: ""
     val avatar get() = profile?.avatar
 
+    override fun onCleared() {
+        super.onCleared()
+        EventBus.getDefault().unregister(this)
+    }
+
 }