IOS開發之自訂狀態條

第一種方法：

-(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];        // 添加自訂子視圖    UIImageView *customView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 0, 120, 18)];    customView.image=[UIImage imageNamed:@"資料重新整理欄.png"];    //    UILabel *label=[[UILabel alloc] initWithFrame:CGRectMake(100, 0, 100, 20)];//    //    label.backgroundColor=[UIColor clearColor];//    label.text=@"資料正在重新整理";//    [customView addSubview:label];    [statusbarWindow addSubview:customView];    [statusbarWindow makeKeyAndVisible];}

第二種方法：

如果需要在狀態列顯示自訂的訊息時，就需要自訂狀態列。

代碼如下：

XYCustomStatusBar.h

01

#import

02

03	@interface XYCustomStatusBar : UIWindow{

04

05	UILabel *_messageLabel;

06

}

07

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

09

10	- (void)hide;

11

12

@end

XYCustomStatusBar.m

01	#import "XYCustomStatusBar.h"

02

03	@implementation XYCustomStatusBar

04

05	- (void)dealloc{

06	[super dealloc];

07	[_messageLabel release], _messageLabel = nil;

08

}

09

10	- (id)init{

11	self = [super init];

12	if (self) {

13	self.frame = [UIApplication sharedApplication].statusBarFrame;

14	self.backgroundColor = [UIColor blackColor];

15	self.windowLevel = UIWindowLevelStatusBar + 1.0f;

16

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

18	[_messageLabel setTextColor:[UIColor whiteColor]];

19	[_messageLabel setTextAlignment:NSTextAlignmentRight];

20	[_messageLabel setBackgroundColor:[UIColor clearColor]];

21	[self addSubview:_messageLabel];

22

}

23

24	return self;

25

}

26

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

28	self.hidden = NO;

29	self.alpha = 1.0f;

30	_messageLabel.text = @"";

31

32	CGSize totalSize = self.frame.size;

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

34

35	[UIView animateWithDuration:0.5 animations:^{

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

37	} completion:^(BOOL finished){

38	_messageLabel.text = message;

39

}];

40

41

}

42

43

44	- (void)hide{

45	self.alpha = 1.0f;

46

47	[UIView animateWithDuration:0.5f animations:^{

48	self.alpha = 0.0f;

49	} completion:^(BOOL finished){

50	_messageLabel.text = @"";

51	self.hidden = YES;

52

}];

53

}

54

55

@end

為了讓自訂的狀態列可以讓使用者看到，設定了它的windowlevel，在ios中，windowlevel屬性決定了UIWindow的顯示層次，預設的windowlevel為UIWindowLevelNormal，即0.0 。為了能覆蓋預設的狀態列，將windowlevel設定高點。其他代碼基本上都不解釋什麼，如果要特殊效果，可以自己添加。