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Use evaluateJavascript for WebView postMessage, if available #19655

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Use evaluateJavascript for WebView postMessage, if available #19655

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9 changes: 7 additions & 2 deletions ReactAndroid/src/main/java/com/facebook/react/views/webview/ReactWebViewManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -639,7 +639,7 @@ public void receiveCommand(WebView root, int commandId, @Nullable ReadableArray
try {
JSONObject eventInitDict = new JSONObject();
eventInitDict.put("data", args.getString(0));
root.loadUrl("javascript:(function () {" +
String code = "(function () {" +
"var event;" +
"var data = " + eventInitDict.toString() + ";" +
"try {" +
Expand All @@ -649,7 +649,12 @@ public void receiveCommand(WebView root, int commandId, @Nullable ReadableArray
"event.initMessageEvent('message', true, true, data.data, data.origin, data.lastEventId, data.source);" +
"}" +
"document.dispatchEvent(event);" +
"})();");
"})();";
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
root.evaluateJavascript(code, null);
} else {
root.loadUrl("javascript:" + code);
}
} catch (JSONException e) {
throw new RuntimeException(e);
}
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