delay slide action when an image is clicked using viewpager android

Question

I have created a slideshow in which i have disabled the default swipe action to slide screens. Instead when I click an image the slide performs. But I want to delay the slide for say t milliseconds after the image is clicked. The method of click action is onClickSlideDown. The viewpager class is as follows:

public class slidescreen extends ActionBarActivity implements Animation.AnimationListener {

//Declare variables
ViewPager viewPager;
PagerAdapter adapter;
int[] background;
int[] icon;
String[] title;
String[] title_2;
String[] description;



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.slidescreenmain);

    //Generate sample data
    background = new int[]{R.mipmap.bg1, R.mipmap.bg2, R.mipmap.bg3, R.mipmap.bg4, R.mipmap.bg5, R.mipmap.bg6,
            R.mipmap.bg7, R.mipmap.bg8, R.mipmap.bg9, R.mipmap.bg10, R.mipmap.bg11, R.mipmap.bg12};

    icon = new int[]{R.mipmap.im1, R.mipmap.im2, R.mipmap.im3, R.mipmap.im4, R.mipmap.im5,
            R.mipmap.im6, R.mipmap.im7, R.mipmap.im8, R.mipmap.im9, R.mipmap.im10, R.mipmap.im11, R.mipmap.im12};

    title = new String[]{"ALTA RESISTENCIA A", "ALTA RESISTENCIA", "ALTAMENTE", "RESISTENCIA A", "MATERIAL", "ALTA RESISTENCIA",
            "RESISTENCIA AL", "RESISTENCIA", "ESTABILIDAD", "ESTABILIDAD", "RESISTENCIA A", "NULA ABSORCIÓN"};

    title_2 = new String[]{"LOS RAYOS UV", "AL FUEGO Y AL CALOR", "RESISTENTE AL RAYADO", "LAS MANCHAS", "INCOMBUSTIBLE", "A LA HIDRÓLISIS",
            "HIELO Y DESHIELO", "MECÁNICA", "DIMENSIONAL", "DEL COLOR", "LA ABRASIÓN", "DEL AGUA"};

    description = new String[]{"Por naturaleza, es capaz del repeler\n" + "líquidos y gases para que no penetren en\n" +
                    "la superficie. De este modo, el\n" + "mantenimiento de la superficie es mínimo\n" +
                    "y más fácil de limpiar."};



    // Locate the ViewPager in viewpager_main.xml
    viewPager = (ViewPager) findViewById(R.id.pager);
    // Pass results to ViewPagerAdapter Class
    adapter = new ViewPagerAdapter(slidescreen.this, background, icon, title, title_2, description);
    // Binds the Adapter to the ViewPager
    viewPager.setAdapter(adapter);

    getSupportActionBar().hide();
}


public void onClickSlideDown(View view) {

    Animation slideback;
    ImageView iconimage, whitebox;
    TextView titletext, title_2text, descriptiontext;
    titletext = (TextView)findViewById(R.id.title);
    title_2text = (TextView)findViewById(R.id.title_2);
    descriptiontext = (TextView)findViewById(R.id.description);
    iconimage = (ImageView)findViewById(R.id.icon);
    whitebox = (ImageView)findViewById(R.id.whitebox);
    slideback = AnimationUtils.loadAnimation(this, R.anim.whiteboxanimback);
    slideback.setAnimationListener(this);
    whitebox.startAnimation(slideback);
    iconimage.startAnimation(slideback);
    titletext.startAnimation(slideback);
    title_2text.startAnimation(slideback);
    descriptiontext.startAnimation(slideback);

    if (viewPager.getCurrentItem() < viewPager.getAdapter().getCount()) {
        viewPager.setCurrentItem(viewPager.getCurrentItem() + 1, true);
    } else {
        Intent i1 = new Intent(this, glass_3.class);
        startActivity(i1);
    }

Thanks :)

Answer 1

Try this out. Add this code in your onClickSlideDown method.

Thread timer = new Thread(){

                public void run(){
                    try{                            
                        sleep(2000);                            
                    }catch(InterruptedException e){                         
                        e.printStackTrace();                            
                    }finally
                     {                          

                         //Your entire code of onClickSlideDown method                      
                    }
                }   
            };
            timer.start();

Hopefully this will work and delay the slide by 2000 miliseconds.

UPDATE : If the key word '' this'' in in intent causing an error, try using the getApplicationContext() instead of the this keyword in intent.

Answer 2

Thanks to @Ish for his answer, but you can't do ui operations on any other thread ...

So handlers comes to rescue, where default constructor uses main thread Message queue looper object

    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            //TODO: Write your code here
        }
    }, delayinMiils);

but when you add delay you are playing with context leaking of main thread ... So as to avoid any sort of context leak please refer to below implementation

 private final MyHandler mHandler = new MyHandler(this);

  /**
   * Instances of anonymous classes do not hold an implicit
   * reference to their outer class when they are "static".
   */
  private static final Runnable sRunnable = new Runnable() {
      @Override
      public void run() { /* ... */ }
  };

    // Post a message and delay its execution for 10 minutes.
    mHandler.postDelayed(sRunnable, 1000 * 60 * 10);