android - how to make left right activity slider? -

any suggestions how make activity slider "slide left" , "slide right" typical image slider??

i tried with: (implements ontouchlistener)

public boolean ontouch(view v, motionevent event) {      switch (event.getaction())     {         case motionevent.action_down:         {                      // code                   break;          }         case motionevent.action_up:         {                             // code              break;         }         case motionevent.action_move:         {              // code             break;         }     }     return true; } 

but don't have left, right choice.

i don't need use buttons, need somethings image slider ipad2 activities customer app.

thanks

you need calculate own slide left , right movement

motionevent.action_up

a pressed gesture has finished, motion contains final release location intermediate points since last down or move event.

motionevent.action_down

a pressed gesture has started, motion contains initial starting location.

use ontouchevent(), , calculate difference in x , difference in y user presses down , lifts up. use these values figure out direction of move.

float x1, x2, y1, y2; string direction; switch(event.getaction()) {         case(motionevent.action_down):             x1 = event.getx();             y1 = event.gety();             break;         case(motionevent.action_up) {             x2 = event.getx();             y2 = event.gety();             float differenceinx = x2-x1;             float differenceiny = y2-y1;                  // use dx , dy determine direction             if(math.abs(differenceinx) > math.abs(differenceiny)) {                 if(differenceinx > 0) direction = "right";                 else direction = "left";             } else {                 if(differenceiny > 0) direction = "down";                 else direction = "up";             }         }         }