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POUIButton hide when change position in scrollview
 

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    <p>I've a scrollView with imageview and semi-transparent button over this image. The button and the imageview are added to scrollview with [addsubview]. Now I need to change the imageview and button position (changing the frame property)</p> <p>es:</p> <pre><code>button.frame = CGRectMake( x, y, w, h ); </code></pre> <p>after I do this the button hides. If I change only the button position it work perfectly.</p> <p>PS: I've just tried to use bringtofront.</p> <p>the scrollview content creation:</p> <pre><code> int index = 0; int x = OFFSETXCOPERTINA; int y = 0; int w = LARGHEZZACOPERTINA; int h = ALTEZZACOPERTINA; int riga = 0; int indexriga = 0; int testindex = 0; if (self.interfaceOrientation == UIInterfaceOrientationPortrait || self.interfaceOrientation ==UIInterfaceOrientationPortraitUpsideDown) { testindex = NRCopertineVerticale; } else { testindex = NRCopertineOrizzontale; } for (NSDictionary *rigaordine in ElencoOrdini) { if (indexriga &gt; 0) x = x + OFFSETXCOPERTINA + w; y = OFFSETYCOPERTINA + (riga * (h + OFFSETYCOPERTINA)); UIButton *buttonCopertina = [UIButton buttonWithType:UIButtonTypeCustom]; buttonCopertina.frame = CGRectMake(x, y, w, h); [buttonCopertina setBackgroundColor:[UIColor colorWithRed:(255/255.0) green:(255/255.0) blue:(0/255.0) alpha:0.3]]; UIImage *image = [[UIImage alloc] initWithData: [NSData dataWithContentsOfURL: [NSURL URLWithString: [NSString stringWithFormat: @"%@image.php?CODe=%@", URLXXX, [rigaordine objectForKey:@"cod_isb"]]]]]; UIImageView *copertina = [[UIImageView alloc] initWithImage: image]; [copertina setTag:TAGCopertine + index]; [copertina setFrame:CGRectMake(x, y, w, h)]; [buttonCopertina setTag:TAGButtonCopertine + index]; [buttonCopertina addTarget:self action:@selector(buttonCopertinaClicked:) forControlEvents:UIControlEventTouchUpInside]; [scrollView addSubview:copertina]; [scrollView addSubview:buttonCopertina]; index++; indexriga++; if (indexriga &gt;= testindex) { indexriga = 0; riga++; x = 10; } } </code></pre> <p>when I rotate the iPad:</p> <pre><code>- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration { int index = 0; int x = OFFSETXCOPERTINA; int y = 0; int w = LARGHEZZACOPERTINA; int h = ALTEZZACOPERTINA; int riga = 0; int indexriga = 0; int testindex = 0; if (toInterfaceOrientation == UIInterfaceOrientationPortrait || toInterfaceOrientation ==UIInterfaceOrientationPortraitUpsideDown) { testindex = NRCopertineVerticale; } else { testindex = NRCopertineOrizzontale; } for(int j = 0; j&lt; 999; j++) { if (indexriga &gt; 0) x = x + OFFSETXCOPERTINA + w; y = OFFSETYCOPERTINA + (riga * (h + OFFSETYCOPERTINA)); UIImageView *copertina = (UIImageView *)[self.scrollView viewWithTag:(TAGCopertine + j)]; if (copertina != nil) { copertina.frame = CGRectMake( x, y, LARGHEZZACOPERTINA, ALTEZZACOPERTINA ); } UIButton *button = (UIButton *)[self.scrollView viewWithTag:(TAGButtonCopertine + j)]; if (button != nil) { button.frame = CGRectMake( x, y, LARGHEZZACOPERTINA, ALTEZZACOPERTINA ); } index++; indexriga++; if (indexriga &gt;= testindex) { indexriga = 0; riga++; x = 10; } } } </code></pre>
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    1. COcan you post your code?
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      1. USNiru Mukund Shah
    2. COWhat's the relationship between the UIButton and the UIScrollView?
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      1. USStavash
    3. COHow're you adding imageView and buttons show your code and also how're you changing the button's frame ?
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      1. USTheTiger
 

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