如何使Android视图在整个应用程序中可见？

Question

I have a DrawingLayout on my android app's landing page. I want to make it visible throughout the application so that I can use that as navigation control for my app. Is it possible? If Yes, how can I achieve that?

Thanks a lot in advance.

Answer 1

将您的DrawingLayout放在每个活动中。

Answer 2

create a class which return a Linear layout containing all your navigation controls which you want on your application screens and add that to your activity by method addView(lin_layout);

look at this

    public class yourClass{
        Context context;
        public LinearLayout createNavBar(int tooBarHeight,String mTitle, Context mContext)
        {

           LinearLayout topBar = new LinearLayout(mContext);
            topBar.setGravity(Gravity.TOP);
            topBar.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,tooBarHeight));   
            topBar.setBackgroundDrawable(d);

            TextView text = new TextView(mContext);
            text.setLayoutParams(new LayoutParams(width - 2*tooBarHeight,tooBarHeight));
            text.setGravity(Gravity.CENTER_VERTICAL);
            text.setText(mTitle);
            text.setTextColor(Color.WHITE);
            text.setPadding(15, 10, 0, 0);
            text.setTextSize(18);

            topBar.addView(text);

            Button home = new Button(mContext);
            home.setLayoutParams(new LayoutParams(tooBarHeight,LayoutParams.MATCH_PARENT));
            //home.setPadding(15, 15, 15, 15);
            home.setGravity(Gravity.RIGHT & Gravity.CENTER_VERTICAL);
            topBar.addView(home);

            home.setOnClickListener(new View.OnClickListener() {

            });

            Button order = new Button(mContext);
            order.setLayoutParams(new LayoutParams(tooBarHeight,LayoutParams.MATCH_PARENT));    
            order.setGravity(Gravity.RIGHT & Gravity.CENTER_VERTICAL);
            //order.setPadding(15, 15, 15, 15); 
            topBar.addView(order);

            order.setOnClickListener(new View.OnClickListener() {

            });

            return topBar;  
       }

} you can add this nav bar to your activity by

yourClass toolbar = new yourClass();
            LinearLayout topBar  = toolbar.createNavBar(72,"your title", mContext);         
            this.addView(topBar);