Reference link:
1. Android can't pop up the alert box
https://blog.csdn.net/xiewensheng1126/article/details/78285651?tdsourcetag=s_pctim_aiomsg
2. Webview and js interaction
https://blog.csdn.net/carson_ho/ article/details/64904691/
3. How to realize interaction
https://www.cnblogs.com/renhui/p/5893099.html
This article mainly refers to the third link.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Page Title</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="js/jquery-1.8.3.min.js"></script>
</head>
<body>
<script>
var jsonStr = '{"id":"001","type":"test"}';
function getValues() {
window.native.getLemmaValues(jsonStr)
}
</script>
</body>
</html>
Requirement: Adapt 4.0-4.4, so to realize the idea, java calls the js method (getValues), after the js method is executed, call the java code again to return the value (window.native.getValues(jsonStr)).