iphone - how to scroll down the view when keyboard is hidden -


i have view having text field. configured keyboard have done button hide keyboard. have attached delegate txtfield scroll when keyboard shown. working fine when click on done hide keyboard , view remains scrolled , user has manually scroll back.. idea/pointer how fix this..

below code acheive scrolling functionality..

- (void)viewwillappear:(bool)animated {     [super viewdidappear:animated];     keyboardisshown = no;      [[nsnotificationcenter defaultcenter] addobserver:self                                              selector:@selector(keyboardwillshow:)                                                  name:uikeyboardwillshownotification                                                object:self.view.window];     // register keyboard notifications     [[nsnotificationcenter defaultcenter] addobserver:self                                              selector:@selector(keyboardwillhide:)                                                  name:uikeyboardwillhidenotification                                                object:self.view.window]; }  - (void)viewwilldisappear:(bool)animated {      [super viewdiddisappear:animated];      [[nsnotificationcenter defaultcenter] removeobserver:self                                                     name:uikeyboardwillshownotification                                                   object:nil];      [[nsnotificationcenter defaultcenter] removeobserver:self                                                     name:uikeyboardwillhidenotification                                                   object:nil]; }   - (void)keyboardwillshow:(nsnotification *)n {     if (keyboardisshown) {         return;     }      nsdictionary* userinfo = [n userinfo];      // size of keyboard     cgsize keyboardsize = [[userinfo objectforkey:uikeyboardframebeginuserinfokey] cgrectvalue].size;      // resize noteview     cgrect viewframe = self.scrollview.frame;     // i'm subtracting constant ktabbarheight because uiscrollview offset uitabbar portion of keyboard leftover pass uitabbar obscuring uiscrollview.     viewframe.size.height -= (keyboardsize.height - ktabbarheight);      [uiview beginanimations:nil context:null];     [uiview setanimationbeginsfromcurrentstate:yes];     // kkeyboardanimationduration using 0.3     [uiview setanimationduration:kkeyboardanimationduration];     [self.scrollview setframe:viewframe];     [uiview commitanimations];      scrollview.contentsize = formview.frame.size;       keyboardisshown = yes; }  - (void)keyboardwillhide:(nsnotification *)n {     nsdictionary* userinfo = [n userinfo];      // size of keyboard     cgsize keyboardsize = [[userinfo objectforkey:uikeyboardframebeginuserinfokey] cgrectvalue].size;       // resize scrollview     cgrect viewframe = self.scrollview.frame;     // i'm subtracting constant ktabbarheight because uiscrollview offset uitabbar portion of keyboard leftover pass uitabbar obscuring uiscrollview.     viewframe.size.height += (keyboardsize.height - ktabbarheight);      [uiview beginanimations:nil context:null];     [uiview setanimationbeginsfromcurrentstate:yes];     // kkeyboardanimationduration using 0.3     [uiview setanimationduration:kkeyboardanimationduration];     [self.scrollview setframe:viewframe];     [uiview commitanimations];      keyboardisshown = no; }

if want scroll top animation.

-(void)keyboardwillhide:(nsnotification *)notification {         uiedgeinsets contentinsets = uiedgeinsetszero;         cgpoint top = cgpointmake(0, 0);         [self.scrollview setcontentoffset:top animated:yes];         self.scrollview.scrollindicatorinsets = contentinsets; }

the keyboardisshown instance variable not needed in above implementation


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