097在进度条中显示进度百分比

效果如下：

ViewController.h

1 #import <UIKit/UIKit.h>
2 #import "KMProgressViewWithLabel.h"
3
4 @interface ViewController : UIViewController
5 @property (strong, nonatomic) KMProgressViewWithLabel *progressViewCustom;
6
7 @end

ViewController.m

 1 #import "ViewController.h"
 2
 3 @interface ViewController ()
 4 - (void)layoutUI;
 5 - (void)updateProgressView:(KMProgressViewWithLabel *)component;
 6 @end
 7
 8 @implementation ViewController
 9
10 - (void)viewDidLoad {
11     [super viewDidLoad];
12
13     [self layoutUI];
14 }
15
16 - (void)didReceiveMemoryWarning {
17     [super didReceiveMemoryWarning];
18     // Dispose of any resources that can be recreated.
19 }
20
21 - (void)layoutUI {
22     self.navigationItem.title = @"在进度条中显示进度百分比";
23     self.view.backgroundColor = [UIColor whiteColor];
24
25     _progressViewCustom = [[KMProgressViewWithLabel alloc] init];
26
27     UIBarButtonItem *barBtnProgress = [[UIBarButtonItem alloc] initWithCustomView:_progressViewCustom];
28     UIBarButtonItem *barBtnFlexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
29     [self setToolbarItems:@[barBtnFlexibleSpace, barBtnProgress, barBtnFlexibleSpace] animated:NO];
30 }
31
32 - (void)viewWillAppear:(BOOL)animated {
33     [self.navigationController setNavigationBarHidden:NO animated:animated];
34     [self.navigationController setToolbarHidden:NO animated:animated];
35 }
36
37 - (void)viewDidAppear:(BOOL)animated {
38     [super viewDidAppear:animated];
39     [self performSelector:@selector(updateProgressView:)
40                withObject:_progressViewCustom
41                afterDelay:5];
42 }
43
44 - (void)viewWillDisappear:(BOOL)animated {
45     [super viewWillDisappear:animated];
46     _progressViewCustom.hidden = YES;
47 }
48
49 - (void)updateProgressView:(KMProgressViewWithLabel *)component {
50     if (!component.hidden) {
51         if (component.progressView.progress < 1.0) {
52             component.progressView.progress += 0.1;
53             component.lblProgress.text = [NSString stringWithFormat:@"下载进度： %.0f%%", component.progressView.progress * 100];
54             [self performSelector:@selector(updateProgressView:)
55                        withObject:component
56                        afterDelay:1];
57         } else {
58             component.lblProgress.text = @"下载成功";
59         }
60     }
61 }
62
63 @end

KMProgressViewWithLabel.h

1 #import <UIKit/UIKit.h>
2
3 @interface KMProgressViewWithLabel : UIView
4 @property (strong, nonatomic) UILabel *lblProgress;
5 @property (strong, nonatomic) UIProgressView *progressView;
6
7 @end

KMProgressViewWithLabel.m

 1 #import "KMProgressViewWithLabel.h"
 2
 3 @interface KMProgressViewWithLabel ()
 4 - (void)layoutUI;
 5 @end
 6
 7 @implementation KMProgressViewWithLabel
 8
 9 - (id)init {
10     if (self = [super init]) {
11         [self layoutUI];
12     }
13     return self;
14 }
15
16 - (void)layoutUI {
17     _lblProgress = [[UILabel alloc] init];
18     _lblProgress.textAlignment = NSTextAlignmentCenter;
19     _lblProgress.textColor = [UIColor whiteColor];
20     _lblProgress.font = [UIFont boldSystemFontOfSize:14.0];
21     _lblProgress.shadowColor = [UIColor blackColor];
22     [self addSubview:_lblProgress];
23
24     _progressView = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleBar];
25     [self addSubview:_progressView];
26
27     self.frame = CGRectMake(0, 0, _progressView.bounds.size.width, _progressView.bounds.size.height * 5);
28 }
29
30 /**
31  *  重新绘制UILabel和UIProgressView的位置和大小外观
32  */
33 - (void)layoutSubviews {
34     CGRect newPoint = self.bounds;
35     newPoint.size.height -= _progressView.frame.size.height;
36     _lblProgress.frame = newPoint;
37
38     newPoint = _progressView.frame;
39     newPoint.origin.y = _lblProgress.frame.size.height + 4.0;
40     _progressView.frame = newPoint;
41 }
42
43 @end

AppDelegate.h

1 #import <UIKit/UIKit.h>
2
3 @interface AppDelegate : UIResponder <UIApplicationDelegate>
4 @property (strong, nonatomic) UIWindow *window;
5 @property (strong, nonatomic) UINavigationController *navigationController;
6
7 @end

AppDelegate.m

 1 #import "AppDelegate.h"
 2 #import "ViewController.h"
 3
 4 @interface AppDelegate ()
 5 @end
 6
 7 @implementation AppDelegate
 8
 9 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
10     _window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
11     ViewController *viewController = [[ViewController alloc] init];
12     _navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
13     _window.rootViewController = _navigationController;
14     //[_window addSubview:_navigationController.view]; //当_window.rootViewController关联时，这一句可有可无
15     [_window makeKeyAndVisible];
16     return YES;
17 }
18
19 - (void)applicationWillResignActive:(UIApplication *)application {
20 }
21
22 - (void)applicationDidEnterBackground:(UIApplication *)application {
23 }
24
25 - (void)applicationWillEnterForeground:(UIApplication *)application {
26 }
27
28 - (void)applicationDidBecomeActive:(UIApplication *)application {
29 }
30
31 - (void)applicationWillTerminate:(UIApplication *)application {
32 }
33
34 @end