IOS开发之自定义状态条

时间：2014-05-15 03:00:20 收藏：0 阅读：414

第一种方法：

-(void)setRefreshWindow{
    CGRect frame = CGRectMake(0.0, 0.0, 320.0, 20.0);
    statusbarWindow = [[UIWindow alloc] initWithFrame:frame];
    [statusbarWindow setBackgroundColor:[UIColor clearColor]];
    [statusbarWindow setWindowLevel:UIWindowLevelStatusBar+1.0f];
    
    // 添加自定义子视图
    UIImageView *customView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 0, 120, 18)];
    customView.image=[UIImage imageNamed:@"数据刷新栏.png"];
    
//    UILabel *label=[[UILabel alloc] initWithFrame:CGRectMake(100, 0, 100, 20)];
//    //    label.backgroundColor=[UIColor clearColor];
//    label.text=@"数据正在刷新";
//    [customView addSubview:label];
    [statusbarWindow addSubview:customView];
    [statusbarWindow makeKeyAndVisible];
}

第二种方法：

如果需要在状态栏显示自定义的消息时，就需要自定义状态栏。

代码如下：

XYCustomStatusBar.h

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#import
 <UIKit/UIKit.h>

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@interface
 XYCustomStatusBar : UIWindow{

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    UILabel
 *_messageLabel;

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}

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08

-
 (void)showStatusMessage:(NSString
 *)message;

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-
 (void)hide;

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@end

XYCustomStatusBar.m

01

#import
 "XYCustomStatusBar.h"

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@implementation
 XYCustomStatusBar

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-
 (void)dealloc{

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    [super
 dealloc];

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    [_messageLabel
 release], _messageLabel = nil;

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}

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-
 (id)init{

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    self
 = [super init];

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    if (self)
 {

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        self.frame
 = [UIApplication sharedApplication].statusBarFrame;

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        self.backgroundColor
 = [UIColor blackColor];

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        self.windowLevel
 = UIWindowLevelStatusBar + 1.0f;

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        _messageLabel
 = [[UILabel alloc] initWithFrame:self.bounds];

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        [_messageLabel
 setTextColor:[UIColor whiteColor]];

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        [_messageLabel
 setTextAlignment:NSTextAlignmentRight];

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        [_messageLabel
 setBackgroundColor:[UIColor clearColor]];

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        [self
 addSubview:_messageLabel];

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    }

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    return self;

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}

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-
 (void)showStatusMessage:(NSString
 *)message{

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    self.hidden
 = NO;

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    self.alpha
 = 1.0f;

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    _messageLabel.text
 = @"";

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    CGSize
 totalSize = self.frame.size;

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    self.frame
 = (CGRect){ self.frame.origin, 0, totalSize.height };

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    [UIView
 animateWithDuration:0.5 animations:^{

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        self.frame
 = (CGRect){self.frame.origin, totalSize };

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    }
 completion:^(BOOL finished){

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        _messageLabel.text
 = message;

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    }];

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}

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-
 (void)hide{

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    self.alpha
 = 1.0f;

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    [UIView
 animateWithDuration:0.5f animations:^{

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        self.alpha
 = 0.0f;

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    }
 completion:^(BOOL finished){

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        _messageLabel.text
 = @"";

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        self.hidden
 = YES;

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    }];

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}

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@end

为了让自定义的状态栏可以让用户看到，设置了它的windowlevel，在ios中，windowlevel属性决定了UIWindow的显示层次，默认的windowlevel为UIWindowLevelNormal，即0.0 。为了能覆盖默认的状态栏，将windowlevel设置高点。其他代码基本上都不解释什么，如果要特殊效果，可以自己添加。

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