UIsegmentedControl setTintColor奇怪的行爲

我有一個UISegmentedControl包含3個選項來選擇地圖類型。我將tintcolor設置爲默認的黑色，我想爲選定的段設置綠色。UIsegmentedControl setTintColor奇怪的行爲

這裏是分段控制

NSArray *mapType = [NSArray arrayWithObjects: @"Map", @"Hyb", @"Sat", nil]; 
    segmentedMapType = [[UISegmentedControl alloc] initWithItems:mapType] ; 
    segmentedMapType.segmentedControlStyle = UISegmentedControlStyleBar ; 
    segmentedMapType.tintColor = [UIColor blackColor]; 
    segmentedMapType.frame = CGRectMake(100, 40, 120, 40); 
    // segmentedMapType.momentary = YES; 
    [[[segmentedMapType subviews]objectAtIndex:0] setTintColor:[UIColor colorWithRed:0 green:.6 blue:0 alpha:1]]; 
    [segmentedMapType setSelectedSegmentIndex:0]; 

[segmentedMapType addTarget:self action:@selector(selectMap:) forControlEvents:UIControlEventValueChanged]; 
[mapSettingsView addSubview:segmentedMapType];

的聲明這裏是選擇方法

-(void)selectMap:(id)sender 
    { 
     int index = [segmentedMapType selectedSegmentIndex]; 

     UIColor *newSelectedTintColor = [UIColor colorWithRed: 0 green:.6 blue:0 alpha:1.0]; 

     if (index==0) { 
    [[[segmentedMapType subviews] objectAtIndex:2] setTintColor:newSelectedTintColor]; 
    [[[segmentedMapType subviews] objectAtIndex:1] setTintColor:[UIColor blackColor]]; 
    [[[segmentedMapType subviews] objectAtIndex:0] setTintColor:[UIColor blackColor]]; 
} else if (index==1){ 
    [[[segmentedMapType subviews] objectAtIndex:1] setTintColor:newSelectedTintColor]; 
    [[[segmentedMapType subviews] objectAtIndex:0] setTintColor:[UIColor blackColor]]; 
    [[[segmentedMapType subviews] objectAtIndex:2] setTintColor:[UIColor blackColor]]; 
} 
else 

if (index==2) 
{ 
    [[[segmentedMapType subviews] objectAtIndex:0] setTintColor:newSelectedTintColor]; 
    [[[segmentedMapType subviews] objectAtIndex:1] setTintColor:[UIColor blackColor]]; 
    [[[segmentedMapType subviews] objectAtIndex:2] setTintColor:[UIColor blackColor]]; 
} 


     }

此代碼的工作設備上<良好IOS的5，但是，> = IOS的5問題，此是綠色色調不適用於正確的部分或有時適用於任何部分。這段代碼有什麼問題？任何幫助將不勝感激。

來源

2012-01-18 chatur

感謝this問題。

如前所述，選擇的索引不是分配tintcolor的可靠方法。我必須存儲他們的id並用它們來分配tintcolor。第一家門店標識

for (int i=0; i<3; i++) { 
     //The most important trick to work, have to retain the subviews 
     segment[i] = [[[segmentedMapType subviews] objectAtIndex:i] retain]; 
    }

，然後用它

-(void)selectMap:(id)sender 
{ 
    int index = [segmentedMapType selectedSegmentIndex]; 
    UIColor *newSelectedTintColor = [UIColor colorWithRed: 0 green:.7 blue:0 alpha:1.0]; 
    for (int i=0; i<3; i++) { 
     [segment[i] setTintColor:[UIColor blackColor]]; 
    } 
    int select = segmentedMapType.selectedSegmentIndex; 
    [segment[select] setTintColor:newSelectedTintColor]; 
}

來源

2012-01-25 14:04:10 chatur