Merge pull request #16 from Tgo1014/feature/snack

Added flow for showing snack bar automatically

Author: johsoe

app/src/main/java/com/monstarlab/arch/extensions/ViewExtensions.kt

@@ -6,9 +6,17 @@ import androidx.fragment.app.Fragment
 import androidx.lifecycle.DefaultLifecycleObserver
 import androidx.lifecycle.LifecycleOwner
 import androidx.lifecycle.lifecycleScope
+import com.google.android.material.snackbar.Snackbar
+import com.monstarlab.core.sharedui.errorhandling.ViewError
 import kotlinx.coroutines.channels.awaitClose
 import kotlinx.coroutines.flow.*
 
+fun Fragment.snackErrorFlow(targetFlow: SharedFlow<ViewError>, root: View, length: Int = Snackbar.LENGTH_SHORT) {
+    collectFlow(targetFlow) { viewError ->
+        Snackbar.make(root, viewError.message, length).show()
+    }
+}
+
 fun Fragment.visibilityFlow(targetFlow: Flow<Boolean>, vararg view: View) {
     collectFlow(targetFlow) { loading ->
         view.forEach { it.isVisible = loading }

app/src/main/java/com/monstarlab/features/login/LoginFragment.kt

@@ -10,6 +10,8 @@ import com.google.android.material.snackbar.Snackbar
 import com.monstarlab.R
 import com.monstarlab.arch.base.BaseFragment
 import com.monstarlab.arch.extensions.collectFlow
+import com.monstarlab.arch.extensions.combineFlows
+import com.monstarlab.arch.extensions.snackErrorFlow
 import com.monstarlab.arch.extensions.onClick
 import com.monstarlab.arch.extensions.viewBinding
 import com.monstarlab.arch.extensions.visibilityFlow
@@ -34,9 +36,7 @@ class LoginFragment : BaseFragment(R.layout.fragment_login) {
             findNavController().navigate(R.id.resourceFragment)
         }
 
-        collectFlow(viewModel.errorFlow) { viewError ->
-            Snackbar.make(view, viewError.message, Snackbar.LENGTH_SHORT).show()
-        }
+        snackErrorFlow(viewModel.errorFlow, view)
 
         visibilityFlow(viewModel.loadingFlow, binding.loginProgressBar)