Animation in objective C -

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-(ibaction)nextbuttonaction:(id)sender{     uiview *newview=[[uiview alloc]initwithframe:cgrectmake(0.0f,0.0f,320.0f,416.0f)];     uiimageview *newimageview=[[uiimageview alloc]initwithframe:cgrectmake(0.0,0.0, 320.0,416.0 )];     uiimageview *upperimageview=[[uiimageview alloc]initwithframe:cgrectmake(0.0, 0.0, 320.0,416)];     if(pagecount == 72){         backbarbutton.title=@"about us";         if(img){             [newimageview setimage:[uiimage imagenamed:@"splashscreenhsd.png"]];}         else{             [newimageview setimage:[uiimage imagenamed:@"splashscreen.png"]];         }          [titlebaritem settitle:@"0/72"];         [newview addsubview:newimageview];         pagecount=0;     }   else {         pagecount++;         nsstring *page=[nsstring stringwithformat:@"pagehsd%d.png",pagecount];         nsstring *pagestring=[nsstring stringwithformat:@"page%d.png",pagecount];          if(img){             [upperimageview setimage:[uiimage imagenamed:page]];         }         else{              [upperimageview setimage:[uiimage imagenamed:pagestring]]; }         if(img){             [newimageview setimage:[uiimage imagenamed:@"backgroundhsd.png"]];}         else{             [newimageview setimage:[uiimage imagenamed:@"background.png"]];         }         [newimageview addsubview:upperimageview];         [newview addsubview:newimageview];         [titlebaritem settitle:[nsstring stringwithformat:@"%d/72",pagecount]];              aboutusbutton.title=@"back";        }     [uiview beginanimations:nil context:nil];     [uiview setanimationduration:1.0];     [uiview setanimationtransition:uiviewanimationtransitioncurlup forview:[self view] cache:no];     [[self view] addsubview:newview];     [uiview commitanimations]; }

i using code , there problem in this, when continue click next button animation gets faster on every click , animation become invisible. tell me solution of problem.

play around animation duration (in seconds). default value 0.2

[uiview setanimationduration:1.0];


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