segmented contro

 - (void)initSegmentedControl
 {
     NSArray *segmentedData = [[NSArray alloc]initWithObjects:@"apple",@"orange",@"banana",nil];
     UISegmentedControl *segmentedControl = [[UISegmentedControl alloc]initWithItems:segmentedData];
     segmentedControl.frame = CGRectMake(10.0, 20.0,300.0, 30.0);
     /*
      这个是设置按下按钮时的颜色
      */
     segmentedControl.tintColor = [UIColor colorWithRed:49.0 / 256.0 green:148.0 / 256.0 blue:208.0 / 256.0 alpha:1];
     segmentedControl.selectedSegmentIndex = 0;//默认选中的按钮索引


     /*
      下面的代码实同正常状态和按下状态的属性控制,比如字体的大小和颜色等
      */
     NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:[UIFont boldSystemFontOfSize:12],NSFontAttributeName,[UIColor redColor], NSForegroundColorAttributeName, nil nil];


     [segmentedControl setTitleTextAttributes:attributes forState:UIControlStateNormal];


     NSDictionary *highlightedAttributes = [NSDictionary dictionaryWithObject:[UIColor redColor] forKey:NSForegroundColorAttributeName];

     [segmentedControl setTitleTextAttributes:highlightedAttributes forState:UIControlStateHighlighted];

     //设置分段控件点击相应事件
     [segmentedControl addTarget:self action:@selector(doSomethingInSegment:)forControlEvents:UIControlEventValueChanged];

     [self.view addSubview:segmentedControl];
 }

 

每个功能注释都有清晰的描述，有一点要特别说明一下:

在ios7以前，segmentedcontrol有一个segmentedControlStyle 属性，通常都要设置，比如像下面这样:

 /*
      typedef enum {
      UISegmentedControlStylePlain,
      UISegmentedControlStyleBordered,
      UISegmentedControlStyleBar,
      UISegmentedControlStyleBezeled,
      } UISegmentedControlStyle;

  */
 segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;

但是这个在ios7之后，出于扁平化风格的考虑，这些style都不在有效了

 

我们再写一个按钮的事件响应函数，设置不同的背景图片，如下:

 -(void)doSomethingInSegment:(UISegmentedControl *)Seg
 {

     NSInteger Index = Seg.selectedSegmentIndex;

     switch (Index)
     {
         case 0:
             self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:kSrcName(@"bg_apple_small.png")]];
             break;
         case 1:
             self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:kSrcName(@"bg_orange_small.png")]];
             break;
         case 2:
             self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:kSrcName(@"bg_banana_small.png")]];
             break;
         default:
             break;
     }
 }