执行此javascript函数并获取返回值

Question

I have this android code that get return value from a javascript function, I have this code:

file_list_detail_webview1.evaluateJavascript("javascript:getValue();", new ValueCallback<String>() {
                @Override
                public void onReceiveValue(String s) {

                    JsonReader reader = new JsonReader(new StringReader(s));

                    // Must set lenient to parse single values
                    reader.setLenient(true);

                    try {
                        if(reader.peek() != JsonToken.NULL) {
                            if(reader.peek() == JsonToken.STRING) {
                                String msg = reader.nextString();
                                if(msg != null) {
                                    FileFunction fileFunction = new FileFunction();
                                    try {
                                        fileFunction.writeFile(filePath, msg);
                                    } catch (ArcAppException e) {
                                        e.printStackTrace();
                                    }
                                }
                            }
                        }
                    } catch (IOException e) {
                        Log.e("TAG", "MainActivity: IOException", e);
                    } finally {
                        try {
                            reader.close();
                        } catch (IOException e) {
                            // NOOP
                        }
                    }
                }
            });

I want to do it inside a public String so that I can reuse it and just get the return value out of it. I tried doing it, but the String that I'm using is getting error.

Can anyone please give me an example on how to do this properly?

Answer 1

I don't have enough reputation to comment, but I don't understand why you use String as method name. Isn't String in public void String is not allow because String is a reserved keyword and not allow to use as a method name.

If you want the return type as String, you need to declare the method as public String yourMethodName