Android/Java - pause thread

I'm new to this, so maybe it's trivial to everybody, but I just can't figure out, why this isn't working. I've read about it, tried many way, and still not working. So I want to pause a thread in android (java). I want this to run, freeze the screen for 1 sec, and continue working. That's all. Why isn't this working?

public class Game extends Activity {

public void onCreate(Bundle savedInstanceState) {

    super.onCreate开发者_运维技巧(savedInstanceState);
    setContentView(R.layout.game);

        runner.join();
        runner.start();

        // do stuff

        pause();

        // do stuff


}

private boolean running = true;
private boolean paused = false;

public void setRunning(boolean run) {
    running = run;
}

public void pause() {
    paused = true;
}

Thread runner = new Thread() {

    public void run() {

        while (running) {

            try {

                //do stuff

                Thread.sleep(100);

                while (paused) {
                    try {
                        Thread.sleep(1000);
                    } catch (Exception e) {
                    } finally {
                        paused = false;
                    }
                }

            } catch (Exception e) {
            }
        }

    }

};

}

You should change the order of the methods call, you coded:

    runner.join();
    runner.start();

Change to:

runner.start();
runner.join();

And it should work.

Call Thread.sleep in the onCreate method. Throw out all the thread stuff. It is just wrong.

Why at all you want to freeze the screen? This is a very bad approach. Use Dialog instead.

if you need freeze screen, you only need use SystemClock.sleep(millis).//1000 = 1 second Android use a main thread for your interface very different . Your code try stop it like a java program.

Example

 @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_login);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    SystemClock.sleep(1000);

...

or search info like this:

//this is similar to your thread
   new Thread(new Runnable() {
       @Override
       public void run() {
           //some code
           int val = 1+ 1; //code here dont interrupt main thread

           //this code run on main thread
           mActivity.runOnUiThread(new Runnable() {
               @Override
               public void run() {
                   //freeze Views
                   SystemClock.sleep(1000);// 1 second
               }
           });

       }
   });

use this

delayprg(3000);//3seg

 private void delayprg(int delayc) {
        try {
            Thread.sleep(delayc);
        } catch (InterruptedException e) {
        }
    }

You must avoid spinning try this:

private boolean isPaused = false;


public synchronized void pause(){
    isPaused = true;
}

public synchronized void play(){
   isPaused = false;
   notifyAll();
}

public synchronized void look(){
   while(isPaused)
      wait();
}

 public void run(){
     while(true){
        look();
        //your code
 }