Why does UIScrollView resize back up when moving to another textfield - iOS iPhone -

this isn't easy 1 answer....

i have 8 text fields on screen sit in scrollview. when select first field, keyboard appears , scrollview shrinks. can scroll , down.

when select text field, can't scroll anymore.

i've checked scrollview height using textfielddidbeginediting , grows up.

i've registered 4 of keyboard notifications none of them triggered during move new text field.

any pointers appreciated :)

- (void)viewdidload { [super viewdidload];  [[nsnotificationcenter defaultcenter] addobserver:self                                          selector:@selector(keyboardwillshow:)                                              name:uikeyboardwillshownotification                                            object:self.view.window]; [[nsnotificationcenter defaultcenter] addobserver:self                                          selector:@selector(keyboardwillhide:)                                              name:uikeyboardwillhidenotification                                            object:self.view.window];   keyboardisshown = no;  //additional code      }  - (void)viewdidunload {  [[nsnotificationcenter defaultcenter] removeobserver:self                                                 name:uikeyboardwillshownotification                                               object:nil];  [[nsnotificationcenter defaultcenter] removeobserver:self                                                 name:uikeyboardwillhidenotification                                               object:nil];   }  - (void)keyboardwillhide:(nsnotification *)n {  nsdictionary* userinfo = [n userinfo];  cgsize keyboardsize = [[userinfo objectforkey:uikeyboardframebeginuserinfokey] cgrectvalue].size;  cgrect viewframe = self.scrollview.frame;  viewframe.size.height += (keyboardsize.height - self.toolbar.frame.size.height);  [self.scrollview setframe:viewframe];  keyboardisshown = no; }  - (void)keyboardwillshow:(nsnotification *)n { if (keyboardisshown) {     return; }  nsdictionary* userinfo = [n userinfo];  cgsize keyboardsize = [[userinfo objectforkey:uikeyboardframebeginuserinfokey] cgrectvalue].size;  cgrect viewframe = self.scrollview.frame;  viewframe.size.height -= (keyboardsize.height - self.toolbar.frame.size.height);  scrollviewheight = viewframe.size.height;  [self.scrollview setframe:viewframe];  keyboardisshown = yes; } 

for moving between text fields:

-(void)textfielddidbeginediting:(uitextfield *)textfield { [[self savebutton] setenabled:yes];  }  -(bool)textfieldshouldreturn:(uitextfield *)textfield { if (textfield == self.label1) {     [self.label2 becomefirstresponder]; } else if (textfield == self.label2) {     [self.label3 becomefirstresponder]; } else if (textfield == self.label3) {     [self.label4 becomefirstresponder]; } else if (textfield == self.label4) {     [self.label5 becomefirstresponder]; } else if (textfield == self.label5) {     [self.label6 becomefirstresponder]; } else if (textfield == self.label6) {     [self.label7 becomefirstresponder]; } else if (textfield == self.label7) {     [self.label8 becomefirstresponder]; } else if (textfield == self.label8) {     [textfield resignfirstresponder]; } return yes; } 

after lots of digging found following code, i've tweaked , tested:

- (void)viewdidload { [super viewdidload];  [[nsnotificationcenter defaultcenter] addobserver:self                                          selector:@selector(keyboardwasshown:)                                              name:uikeyboarddidshownotification                                            object:nil]; [[nsnotificationcenter defaultcenter] addobserver:self                                          selector:@selector(keyboardwillbehidden:)                                              name:uikeyboardwillhidenotification                                            object:nil];   keyboardisshown = no;   //additional code }  - (void)viewdidunload {  [[nsnotificationcenter defaultcenter] removeobserver:self                                                 name:uikeyboarddidshownotification                                               object:nil];  [[nsnotificationcenter defaultcenter] removeobserver:self                                                 name:uikeyboardwillhidenotification                                               object:nil]; }  - (void)keyboardwasshown:(nsnotification*)anotification { nsdictionary* info = [anotification userinfo]; cgsize kbsize = [[info objectforkey:uikeyboardframebeginuserinfokey] cgrectvalue].size;  uiedgeinsets contentinsets = uiedgeinsetsmake(0.0, 0.0, (kbsize.height -    self.toolbar.frame.size.height), 0.0); self.scrollview.contentinset = contentinsets; self.scrollview.scrollindicatorinsets = contentinsets;  // if active text field hidden keyboard, scroll it's visible // application might not need or want behavior. cgrect arect = self.view.frame; arect.size.height -= (kbsize.height + (self.toolbar.frame.size.height*2)); if (!cgrectcontainspoint(arect, activefield.frame.origin) ) {     cgpoint scrollpoint = cgpointmake(0.0, activefield.frame.origin.y-kbsize.height);     [self.scrollview setcontentoffset:scrollpoint animated:yes]; } }  // called when uikeyboardwillhidenotification sent - (void)keyboardwillbehidden:(nsnotification*)anotification { uiedgeinsets contentinsets = uiedgeinsetszero; self.scrollview.contentinset = contentinsets; self.scrollview.scrollindicatorinsets = contentinsets; }  -(void)textfielddidbeginediting:(uitextfield *)textfield { activefield = textfield; }  - (void)textfielddidendediting:(uitextfield *)textfield { activefield = nil; }