基本的navigationBar上面就左,中,右 3个位置,而且默认也是添加UIBarButtonItem/UINavigationBar按钮,但是很多开发过程中会遇到在上面添加更多其它控件,经过研究后,所以特写此文,算是做个笔记,也希望能够帮助朋友解决正在解决的这方面的问题。
1.在固定位置添加UIBarButtonItem
cpp
- UIBarButtonItem *myButton = [[[UIBarButtonItem alloc]
- initWithTitle:@"myButton"
- style:UIBarButtonItemStyleBordered
- target:self
- action:@selector(action)]autorelease];
- self.navigationItem.leftBarButtonItem = myButton;
- //self.navigationItem.rightBarButtonItem = myButton;
- //self.navigationItem.backBarButtonItem = myButton;
- [myButton release];
复制代码 NavigationItem类有以下一些成员:
-title
-titleview
-backBarButtonItem//这是有返回上一级事件的后退按钮
-rightBarButtonItem
-leftBarButtonItem
2.在任意位置添加一个UIToolbar叠加到navigationBar上,然后设置其背景透明,则可以实现在上这个navigationBar 上面添加多个按钮的效果cpp- UIToolbar *mycustomToolBar;
- NSMutableArray *mycustomButtons = [[NSMutableArray alloc] init];
- UIBarButtonItem *myButton1 = [[[UIBarButtonItem alloc]
- initWithTitle:@"Get5"
- style:UIBarButtonItemStyleBordered
- target:self
- action:@selector(action)]autorelease];
- myButton1.width = 40;
- [mycustomButtons addObject: myButton1];
- UIBarButtonItem *myButton2 = [[[UIBarButtonItem alloc]
- initWithTitle:@"Play5"
- style:UIBarButtonItemStyleBordered
- target:self
- action:@selector(action)]autorelease];
- myButton2.width = 40;
- [mycustomButtons addObject: myButton2];
-
- mycustomToolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0.0f, 0.0f,320.0f, 44.0f)];
- //mycustomToolBar.center = CGPointMake(160.0f,200.0f);
- mycustomToolBar.barStyle = UIBarStyleDefault;
- [mycustomToolBar setItems:mycustomButtons animated:YES];
- [mycustomToolBar sizeToFit];
- [self.view addSubview:mycustomToolBar];
- //self.navigationItem.titleView = mycustomToolBar;//与上一句都可实现在上面叠加工具条
- //将toolbar的颜色设置为透明,总之使用两个控件叠加完美
- [mycustomToolBar release];
- [mycustomButtons release];
复制代码 这里是在UIToolbar 上面添加UIBarButtonItem,然而我们很多时候可能会添加其它控件,如:switch,label等等,所以在UIToolbar上面如何添加各种控件,就参考下一篇文章。
3.在任意位置添加UISegmentedControlcpp- UISegmentedControl * mySegment;
- mySegment = [[UISegmentedControl alloc]
- initWithFrame:CGRectMake(5.0f, 10.0, 60.0f, 30.0f)];
- [mySegment insertSegmentWithTitle:@"mySeg1" atIndex:0 animated:YES];
- [get5Segment insertSegmentWithTitle:@"mySeg2" atIndex:1 animated:YES];
- mySegment.segmentedControlStyle = UISegmentedControlStyleBar;
- [mySegment addTarget:self action:@selector(segAction:) forControlEvents:UIControlEventValueChanged];
- mySegment.selectedSegmentIndex = -1;
- [self.navigationController.navigationBar addSubview: mySegment];
- [mySegment release];
复制代码 如果要在navigationBar实现多个按钮,而且某个功能块的类似按钮需要挨在一起,用segment实现还是很不错,用UIBarButtonItem实现的话,按钮间总是有一个间隔。4.在任意位置添加UILabelcpp- UILabel* myLabel;
- myLabel=[[UILabel alloc] initWithFrame:CGRectMake(100.0f, 14.0f, 100.0f, 10.0f)];
- myLabel.font=[UIFont systemFontOfSize:10];
- myLabel.backgroundColor = [UIColor clearColor];
- [self.navigationController.navigationBar addSubview: myLabel];
- [myLabel release];
复制代码 5.在任意位置添加UIProgressView cpp - UIProgressView *myProgress;
- myProgress =[[UIProgressView alloc] initWithFrame:CGRectMake(80.0f, 28.0f, 150.0f, 8.0f)];
- [self.navigationController.navigationBar addSubview: myProgress];
- [myProgress release];
复制代码
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