Programming with SurfaceView and thread strategy for game development

Question

I am using a SurfaceView and a rendering thread to develop a game based on structure like LunarLander.

However, I faced many problems, and here I want to point them

Answer 1

the solution is here

public void surfaceCreated(SurfaceHolder holder){

            if (plot_thread.getState() == Thread.State.TERMINATED) {
                plot_thread = new WaveformPlotThread(getHolder(), this);
                plot_thread.setRunning(true);
                plot_thread.start();
            }
            else {
                plot_thread.setRunning(true);
                plot_thread.start();
            }
        }