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@@ -55,7 +55,7 @@ class MyWeb extends Component {
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### Loading local HTML files
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-Note: This is currently not working as discussed in [#428](https://github.com/react-native-community/react-native-webview/issues/428) and [#518](https://github.com/react-native-community/react-native-webview/issues/518). Possible workarounds include bundling all assets with webpack or similar, or running a [local webserver](https://github.com/futurepress/react-native-static-server).
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+Note: This is currently not working as discussed in [#428](https://github.com/react-native-webview/react-native-webview/issues/428) and [#518](https://github.com/react-native-webview/react-native-webview/issues/518). Possible workarounds include bundling all assets with webpack or similar, or running a [local webserver](https://github.com/futurepress/react-native-static-server).
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<details><summary>Show non-working method</summary>
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@@ -302,8 +302,7 @@ export default class App extends Component {
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<View style={{ flex: 1 }}>
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<WebView
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source={{
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- uri:
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- 'https://github.com/react-native-community/react-native-webview',
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+ uri: 'https://github.com/react-native-webview/react-native-webview',
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}}
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onMessage={(event) => {}}
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injectedJavaScript={runFirst}
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@@ -322,7 +321,7 @@ By setting `injectedJavaScriptForMainFrameOnly: false`, the JavaScript injection
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_Under the hood_
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-> On iOS, ~~`injectedJavaScript` runs a method on WebView called `evaluateJavaScript:completionHandler:`~~ – this is no longer true as of version `8.2.0`. Instead, we use a `WKUserScript` with injection time `WKUserScriptInjectionTimeAtDocumentEnd`. As a consequence, `injectedJavaScript` no longer returns an evaluation value nor logs a warning to the console. In the unlikely event that your app depended upon this behaviour, please see migration steps [here](https://github.com/react-native-community/react-native-webview/pull/1119#issuecomment-574919464) to retain equivalent behaviour.
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+> On iOS, ~~`injectedJavaScript` runs a method on WebView called `evaluateJavaScript:completionHandler:`~~ – this is no longer true as of version `8.2.0`. Instead, we use a `WKUserScript` with injection time `WKUserScriptInjectionTimeAtDocumentEnd`. As a consequence, `injectedJavaScript` no longer returns an evaluation value nor logs a warning to the console. In the unlikely event that your app depended upon this behaviour, please see migration steps [here](https://github.com/react-native-webview/react-native-webview/pull/1119#issuecomment-574919464) to retain equivalent behaviour.
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> On Android, `injectedJavaScript` runs a method on the Android WebView called `evaluateJavascriptWithFallback`
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#### The `injectedJavaScriptBeforeContentLoaded` prop
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@@ -344,8 +343,7 @@ export default class App extends Component {
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<View style={{ flex: 1 }}>
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<WebView
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source={{
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- uri:
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- 'https://github.com/react-native-community/react-native-webview',
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+ uri: 'https://github.com/react-native-webview/react-native-webview',
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}}
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injectedJavaScriptBeforeContentLoaded={runFirst}
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/>
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@@ -357,9 +355,9 @@ export default class App extends Component {
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This runs the JavaScript in the `runFirst` string before the page is loaded. In this case, the value of `window.isNativeApp` will be set to true before the web code executes.
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-By setting `injectedJavaScriptBeforeContentLoadedForMainFrameOnly: false`, the JavaScript injection will occur on all frames (not just the top frame) if supported for the given platform. However, although support for `injectedJavaScriptBeforeContentLoadedForMainFrameOnly: false` has been implemented for iOS and macOS, [it is not clear](https://github.com/react-native-community/react-native-webview/pull/1119#issuecomment-600275750) that it is actually possible to inject JS into iframes at this point in the page lifecycle, and so relying on the expected behaviour of this prop when set to `false` is not recommended.
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+By setting `injectedJavaScriptBeforeContentLoadedForMainFrameOnly: false`, the JavaScript injection will occur on all frames (not just the top frame) if supported for the given platform. However, although support for `injectedJavaScriptBeforeContentLoadedForMainFrameOnly: false` has been implemented for iOS and macOS, [it is not clear](https://github.com/react-native-webview/react-native-webview/pull/1119#issuecomment-600275750) that it is actually possible to inject JS into iframes at this point in the page lifecycle, and so relying on the expected behaviour of this prop when set to `false` is not recommended.
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-> On iOS, ~~`injectedJavaScriptBeforeContentLoaded` runs a method on WebView called `evaluateJavaScript:completionHandler:`~~ – this is no longer true as of version `8.2.0`. Instead, we use a `WKUserScript` with injection time `WKUserScriptInjectionTimeAtDocumentStart`. As a consequence, `injectedJavaScriptBeforeContentLoaded` no longer returns an evaluation value nor logs a warning to the console. In the unlikely event that your app depended upon this behaviour, please see migration steps [here](https://github.com/react-native-community/react-native-webview/pull/1119#issuecomment-574919464) to retain equivalent behaviour.
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+> On iOS, ~~`injectedJavaScriptBeforeContentLoaded` runs a method on WebView called `evaluateJavaScript:completionHandler:`~~ – this is no longer true as of version `8.2.0`. Instead, we use a `WKUserScript` with injection time `WKUserScriptInjectionTimeAtDocumentStart`. As a consequence, `injectedJavaScriptBeforeContentLoaded` no longer returns an evaluation value nor logs a warning to the console. In the unlikely event that your app depended upon this behaviour, please see migration steps [here](https://github.com/react-native-webview/react-native-webview/pull/1119#issuecomment-574919464) to retain equivalent behaviour.
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> On Android, `injectedJavaScript` runs a method on the Android WebView called `evaluateJavascriptWithFallback`
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> Note on Android Compatibility: For applications targeting `Build.VERSION_CODES.N` or later, JavaScript state from an empty WebView is no longer persisted across navigations like `loadUrl(java.lang.String)`. For example, global variables and functions defined before calling `loadUrl(java.lang.String)` will not exist in the loaded page. Applications should use the Android Native API `addJavascriptInterface(Object, String)` instead to persist JavaScript objects across navigations.
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@@ -388,8 +386,7 @@ export default class App extends Component {
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<WebView
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ref={(r) => (this.webref = r)}
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source={{
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- uri:
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- 'https://github.com/react-native-community/react-native-webview',
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+ uri: 'https://github.com/react-native-webview/react-native-webview',
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}}
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/>
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</View>
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Joshua Smith
před 4 roky