iphone常用控件之UISegmentControl

-(void) viewDidLoad{
 /*************分段控件UISegmentdControl*************/
    UISegmentedControl *segmentedControl = [[UISegmentedControlalloc] initWithItems:nil];
    segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar; //控件風格小按鈕，適合導航欄：
    segmentedControl.segmentedControlStyle = UISegmentedControlStyleBezeled; //控件風格 
    segmentedControl.segmentedControlStyle = UISegmentedControlStyleBordered; //控件風格黑邊的大白按鈕，適合表格單元
    segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain; //控件風格灰邊大白按鈕，適合偏好設置單元
    
    segmentedControl.tintColor = [UIColor blueColor]; //渲染色彩
    
    //添加片段，從0單元開始 ,可加入標題或圖片兩種情況
    [segmentedControl insertSegmentWithTitle:@"First"atIndex:0animated:NO];
    [segmentedControl insertSegmentWithTitle:@"Second"atIndex:1animated:NO];
    
    UIImage *myImage = [UIImage imageNamed:@"1.png"];  
    [segmentedControl insertSegmentWithImage:myImage atIndex:2animated:NO];
    
    //刪除片段
    [segmentedControl removeSegmentAtIndex:1 animated:YES]; //刪除單個
    [segmentedControl removeAllSegments];  //刪除所有
    
    //片段標題
    [segmentedControl setTitle:@"Third" forSegmentAtIndex:2];//設置標題
    NSString *myTitle = [segmentedControl titleForSegmentAtIndex:0];//讀取標題
    
    //圖像
    [segmentedControl setImage:[UIImageimageNamed:@"2.png"] forSegmentAtIndex:0];//設置圖像
    UIImage *myImage = [segmentedControl imageForSegmentAtIndex:3]; //讀取圖片
    
    //設置片段寬度
    [segmentedControl setWidth:64.0 forSegmentAtIndex:0];
    
    //瞬時單擊
    segmentedControl.momentary = YES; //按鈕被按下后很快恢復，默認為選中狀態就一直保持
    
    //初始化默認片段
    segmentedControl.selectedSegmentIndex = 0; //初始指定第0個選中
    
    //顯示控件
    [parentView addSubview:segmentedControl]; //添加到父視圖
    self.navigationItem.titleView = segmentedControl; //添加到導航欄（通過視圖控制器）
    
    //讀取控件
    int selectIndex = segmentedControl.selectedSegmentIndex;  //對應當前被選總的片段號碼
[segmentedControl addTarget:selfaction:@selector(controlPressed:) forControlEvents:UIControlEventValueChanged];

}

 //SegmentedControl觸發的動作    

-(void)controlPressed:(id)sender{        

        UISegmentedControl *control = (UISegmentedControl *)sender;

        if (control == mySegmentedControl) {            

            int x = control.selectedSegmentIndex;           

            /*添加代碼，對片段變化做出響應*/         

    }

}