NTP-13457 | Shiv Natani | Tribute Back Press Handled (#13678)

android/app/src/main/java/com/naviapp/home/dashboard/ui/compose/loansTab/RenderWebView.kt

@@ -17,10 +17,16 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.statusBarsPadding
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.viewinterop.AndroidView
 import com.navi.analytics.utils.NaviTrackEvent
+import com.navi.base.utils.orFalse
 import com.navi.common.utils.Constants
 import com.naviapp.analytics.utils.NaviAnalytics
 import com.naviapp.utils.Constants.WEB_URL
@@ -33,18 +39,34 @@ fun RenderWebView(
     webChromeCustomClient: WebChromeClient = WebChromeClient(),
     javascriptInterfaces: (WebView) -> (Map<String, Any>) = { mapOf() },
     bottomPadding: Int = 0,
+    backPressCounter: Int = 0,
+    fallbackBackHandler: () -> Unit = {}
 ) {
+    var webView by remember { mutableStateOf<WebView?>(null) }
+
+    LaunchedEffect(backPressCounter) {
+        if (backPressCounter > 0) {
+            if (webView?.canGoBack().orFalse()) {
+                webView?.goBack()
+            } else {
+                fallbackBackHandler.invoke()
+            }
+        }
+    }
+
     AndroidView(
         factory = { context ->
-            WebView(context).apply {
-                isVerticalScrollBarEnabled = false
-                setWebViewSettings()
-                setOverScrollMode(View.OVER_SCROLL_NEVER)
-                setLayerType(View.LAYER_TYPE_HARDWARE, null)
-                webViewClient = webViewCustomClient
-                webChromeClient = webChromeCustomClient
-                addJavaScriptInterfaces(javascriptInterfaces)
-            }
+            webView =
+                WebView(context).apply {
+                    isVerticalScrollBarEnabled = false
+                    setWebViewSettings()
+                    setOverScrollMode(View.OVER_SCROLL_NEVER)
+                    setLayerType(View.LAYER_TYPE_HARDWARE, null)
+                    webViewClient = webViewCustomClient
+                    webChromeClient = webChromeCustomClient
+                    addJavaScriptInterfaces(javascriptInterfaces)
+                }
+            webView!!
         },
         modifier = Modifier.fillMaxSize().padding(bottom = bottomPadding.dp).statusBarsPadding(),
         update = { webView ->

android/app/src/main/java/com/naviapp/webredirection/presentation/activity/WebRedirectionActivity.kt

@@ -291,6 +291,7 @@ class WebRedirectionActivity : BaseActivity() {
         handleException: (Throwable) -> Unit
     ) {
         val lifecycleOwner = LocalLifecycleOwner.current
+        val backPressCounter by webRedirectionVM.backPressCounter.collectAsStateWithLifecycle()
         when (data) {
             is UiState.Loading -> {
                 LoansTabContentShimmer()
@@ -322,12 +323,21 @@ class WebRedirectionActivity : BaseActivity() {
                                     handleException = handleException
                                 )
                         )
-                    }
+                    },
+                    backPressCounter = backPressCounter,
+                    fallbackBackHandler = { super.onBackPressed() }
                 )
             }
         }
     }
 
+    override fun onBackPressed() {
+        webRedirectionVM.incrementBackPressedCounter()
+        if (webRedirectionVM.backPressCounter.value < 0) {
+            super.onBackPressed()
+        }
+    }
+
     private fun handleNavigation(ctaData: CtaData) =
         NaviDeepLinkNavigator.navigateTo(
             activity = this,

android/app/src/main/java/com/naviapp/webredirection/presentation/viewModel/WebRedirectionVM.kt

@@ -75,6 +75,9 @@ constructor(
     private val _webRedirectionPlatform = MutableStateFlow(WebRedirectionPlatform.EXTERNAL_WEB)
     val webRedirectionPlatform = _webRedirectionPlatform.asStateFlow()
 
+    private val _backPressCounter = MutableStateFlow(0)
+    val backPressCounter = _backPressCounter.asStateFlow()
+
     private val _webRedirectionData = MutableStateFlow<WebRedirectionData?>(null)
     val webRedirectionData = _webRedirectionData.asStateFlow()
 
@@ -220,6 +223,10 @@ constructor(
     fun showNaviFinservLogo(): Boolean {
         return businessUnit == PL
     }
+
+    fun incrementBackPressedCounter() {
+        _backPressCounter.update { it + 1 }
+    }
 }
 
 sealed class UiState {