I am working on an Ionic application that includes a custom class extending org.apache.cordova.CordovaPlugin to assist with background tasks. I am looking for a way to send asynchronous events from the Java side to the Ionic side of the app. Is there a method to register a listener, callback function, or any other mechanism to trigger Ionic/Angular/JavaScript code from the Java side?
Achieving communication between webview and Native code is possible.
For Android :
this.appView.loadUrl("javascript:yourmethodname());");
For iOS :
[webView stringByEvaluatingJavaScriptFromString:@"yourmethodname()"];
Make sure to replace "yourmethodname" with the actual javascript function you want to call.
If you want to run a method asynchronously, you can use setTimeout as shown below:
Approach 1:
this.appView.loadUrl("javascript:asyncMethod());");
In JS :
function asyncMethod(){
setTimeout(methodtocall(),5000);
}
Approach 2:
Alternatively, you can directly trigger the asynchronous method from Java
this.appView.loadUrl("javascript:setTimeout(methodtocall(),5000))");
Using Approach 1 allows for reusability in your Javascript functions.
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