feat(android): improve initialization scripts (#5028)

examples/api/src-tauri/Cargo.lock

@@ -4223,8 +4223,7 @@ dependencies = [
 [[package]]
 name = "wry"
 version = "0.20.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea48fb3b68ab76f62837bfcea63baed9a185dbec9c14d4e5d70033e22fefffd2"
+source = "git+https://github.com/tauri-apps/wry?branch=dev#1b26d605d6e33f5417eb6566a7381d8feb239c8b"
 dependencies = [
  "block",
  "cocoa",

examples/api/src-tauri/Cargo.toml

@@ -6,6 +6,9 @@ edition = "2021"
 rust-version = "1.57"
 license = "Apache-2.0 OR MIT"
 
+[patch.crates-io]
+wry = { git = "https://github.com/tauri-apps/wry", branch = "dev" }
+
 [lib]
 crate-type = ["staticlib", "cdylib", "rlib"]
 

tooling/cli/templates/mobile/android/app/src/main/RustWebChromeClient.kt

@@ -1,26 +0,0 @@
-package {{reverse-domain app.domain}}.{{snake-case app.name}}
-
-import android.webkit.*
-
-class RustWebChromeClient: WebChromeClient() {
-  private var loadedUrl: String? = null
-
-  override fun onProgressChanged(view: WebView, progress: Int) {
-    var url = view.url ?: ""
-    if (url.endsWith("##")) {
-      url = url.dropLast(2)
-    }
-    if (loadedUrl != url && progress >= 20) {
-      loadedUrl = url
-      runInitializationScripts()
-    }
-  }
-
-  companion object {
-    init {
-      System.loadLibrary("{{snake-case app.name}}")
-    }
-  }
-
-  private external fun runInitializationScripts()
-}

tooling/cli/templates/mobile/android/app/src/main/RustWebViewClient.kt

@@ -1,8 +1,22 @@
 package {{reverse-domain app.domain}}.{{snake-case app.name}}
 
+import android.graphics.Bitmap
 import android.webkit.*
 
-class RustWebViewClient: WebViewClient() {
+class RustWebViewClient(initScripts: Array<String>): WebViewClient() {
+    private val initializationScripts: Array<String>
+  
+    init {
+      initializationScripts = initScripts
+    }
+
+    override fun onPageStarted(view: WebView?, url: String?, favicon: Bitmap?) {
+        for (script in initializationScripts) {
+          view?.evaluateJavascript(script, null)
+        }
+        super.onPageStarted(view, url, favicon)
+    }
+  
     override fun shouldOverrideUrlLoading(view: WebView?, request: WebResourceRequest?): Boolean {
         return false
     }