UISegmentedControl 分段控制器

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属性

• 创建

NSArray *array = [[NSArray alloc]initWithObjects:@"1",@"2",@"3",nil]; //创建数组储存分段控制器标题
UISegmentedControl *segment = [[UISegmentedControl alloc]initWithItems:array]; //创建UISegmentedControl,并赋予标题
segment.frame = CGRectMake(20,20,30,30); //设置UISegmentedControl的位置

• BackgroundColor————背景颜色；

segment.backgroundColor = [UIColor colorWithRed:1 green:1 blue:1 alpha:1];

• tintColor————渲染色彩

segment.tintColor = [UIColor redColor];

• 片段的增删

[segment insertSegmentWithTitle:@"First" atIndex:0 anitmated:NO]; //第0单元title为First
UIImage *myImage = [UIImage imageNamed:@"1.png"];
[segment inserSegmentWithImage:myImage atIndex:2 animated:NO]; //第2单元添加图片
[segment removeSegmentAtIndex:1 animated:YES]; //删除单个片段
[segment removeAllSegments]; //删除所有
[segment setTitle:@"Third" forSegmentAtIndex:2]; //设置标题
[NSString *myTitle = [segment titleForSegmentAtIndex:0]; //读取标题
[segment setImage:[UIImage imageNamed:@""] forSegmentAtIndex:0]; //设置图像
UIImage *myImage = [segment imageForSegmentAtIndex:3]; //读取图片

• 设置片段的宽度

[segment setWidth:64 forSegmentAtIndex:0]; //设置片段宽度

• 瞬时单击

segment.momentary = YES; //按钮被按下后很快恢复,默认选中状态就一直保持 设置在点击后是否恢复原样

• 初始化默认片段

segment.selectedSegmentIndex = 0; //初始指定第0格选中

• 设置指定索引选项不可选

[segment setEnabled:NO forSegmentAtIndex:4];

• 判断指定索引选项是否可选

BOOL endableFlag = [segment isEnabledForSegmentAtIndex:4];
NSLog(@"endabledFlag = %d",endableFlag);

• 设置边角

segment.layer.cornerRadius = 5.0;
segment.layer.masksToBounds = YES;

• 响应事件

[segment addTarget:self action:@selector(controlPressed:) forControlEvents:UIControlEventValueChanged];
-(void)controlPressed:(UISegmentedControl *)segment{
    NSInteger Index = segment.selectedSegmentIndex;
    switch(Index) {//switch循环语句
    }
}