java - create slide show with button bar -

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i want make main activity changing ground swipping image , and on left side want put button bar contain 4 buttons move 4 different activities write folloning code :

public class mainactivity extends activity { button[]  buttons = new button[4];  sharedpreferences fsc; private static final int swipe_min_distance = 120; private static final int swipe_threshold_velocity = 200; private viewflipper mviewflipper;    private context mcontext;  private final gesturedetector detector = new swipegesturedetector(); @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     getwindow().setflags(windowmanager.layoutparams.flag_fullscreen,              windowmanager.layoutparams.flag_fullscreen);             setcontentview(r.layout.activity_main);             setrequestedorientation(activityinfo.screen_orientation_portrait);              addlisteneronbutton();     setcontentview(r.layout.activity_main);     mcontext = this;     mviewflipper = (viewflipper) this.findviewbyid(r.id.view_flipper);     mviewflipper.setontouchlistener(new ontouchlistener() {         @override         public boolean ontouch(final view view, final motionevent event) {             detector.ontouchevent(event);             return true;         }     }); } private void addlisteneronbutton() {     buttons[0] = (button) findviewbyid(r.id.slide);      buttons[0].setonclicklistener(new onclicklistener() {          public void onclick(view arg0) {              intent myintent = new intent(mainactivity.this,                     slideshow.class);             startactivity(myintent);     // todo auto-generated method stub         }     }      ); class swipegesturedetector extends simpleongesturelistener {     @override     public boolean onfling(motionevent e1, motionevent e2, float velocityx, float velocityy) {         try {             // right left swipe             if (e1.getx() - e2.getx() > swipe_min_distance && math.abs(velocityx) > swipe_threshold_velocity) {                 mviewflipper.setinanimation(animationutils.loadanimation(mcontext, r.anim.left_in));                 mviewflipper.setoutanimation(animationutils.loadanimation(mcontext, r.anim.left_out));                                   mviewflipper.shownext();                 return true;             } else if (e2.getx() - e1.getx() > swipe_min_distance && math.abs(velocityx) > swipe_threshold_velocity) {                 mviewflipper.setinanimation(animationutils.loadanimation(mcontext, r.anim.right_in));                 mviewflipper.setoutanimation(animationutils.loadanimation(mcontext,r.anim.right_out));                 mviewflipper.showprevious();                 return true;             }          } catch (exception e) {             e.printstacktrace();         }          return false;     } }

}

you aren't importing library classes need. this question may helpful.

it looks you're doing hand in basic text editor. using ide eclipse (which has android tools) keep having hand.


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