解析json数据时可以看到以前的选项卡组件-cn1

Question

There are a couple of tabs in a screen. Each tab with its own connectionRequest. But when any tab is selected, the components of the previous tab flashes before new tab components are seen. How can I solve this. Using addShowListener in each tab has its own issue. It shows blank screen. Please have a look at the video here

Here if you go from home tab to service tab, service tab components are seen and it starts to parse the json data(loader is seen). Then the components from home screen is seen before the parsed data is shown in service tab component.

Tabs tabs = new Tabs(Component.BOTTOM);
tabs.addTab("Home", calendarIcon, homeContainer);
tabs.addTab("Book", calendarIcon3, quickBookingContainer);
tabs.addTab("Servicing", calendarIcon1, servicingContainer);
tabs.addTab("History", calendarIcon2, serviceHistoryContainer);

add(BorderLayout.CENTER, tabs);

tabs.addSelectionListener((int oldSelected, int newSelected) -> {
    if (newSelected == 0) {
        //connectionRequest for parsing json data
        homeContainerRequest(homeContainer, res);
    } else if (newSelected == 1) {
        quickBookingContainerRequest(quickBookingContainer, res);
    } else if (newSelected == 2) {
        serviceRequest(serviceContainer, res);
    } else if (newSelected == 3) {
        serviceHistoryRequest(serviceHistoryContainer, res);
    } 
});


public void homeContainerRequest(Container homeContainer, Resources res){
    ConnectionRequest con = new ConnectionRequest(url, false) {

        @Override
        protected void readResponse(InputStream input) throws IOException {
            JSONParser jp = new JSONParser();
            Map parser = jp.parseJSON(new InputStreamReader(input));
            _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
            _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
        }
    };
    con.setFailSilently(true);
    con.addRequestHeader("accept", "application/json");
    NetworkManager.getInstance().addToQueue(con);
}

public void quickBookingContainerRequest(Container quickBookingContainer, Resources res){
    ConnectionRequest con = new ConnectionRequest(url1, false) {

        @Override
        protected void readResponse(InputStream input) throws IOException {
            JSONParser jp = new JSONParser();
            Map parser = jp.parseJSON(new InputStreamReader(input));
            _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
            _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
        }
    };
    con.setFailSilently(true);
    con.addRequestHeader("accept", "application/json");
    NetworkManager.getInstance().addToQueue(con);
}

public void serviceHistoryRequest(Container serviceHistoryContainer, Resources res){
    ConnectionRequest con = new ConnectionRequest(url2, false) {

        @Override
        protected void readResponse(InputStream input) throws IOException {
            JSONParser jp = new JSONParser();
            Map parser = jp.parseJSON(new InputStreamReader(input));
            _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
            _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
        }
    };
    con.setFailSilently(true);
    con.addRequestHeader("accept", "application/json");
    NetworkManager.getInstance().addToQueue(con);
}

Answer 1

I'm guessing it relates to the animation and excessive repaint calls. Try using tabs.setAnimateTabSelection(false) .