Status Bar prompt

Status Bar prompt
Status Bar prompt

@property (nonatomic, strong) UIWindow *window;@property (nonatomic, strong) UILabel *meterLabel;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    self.window = [[UIWindow alloc] initWithFrame:[UIApplication sharedApplication].statusBarFrame];    self.window.windowLevel = UIWindowLevelStatusBar + 10.0;    self.window.userInteractionEnabled = NO;        CGFloat const kMeterWidth = 165.0;    self.meterLabel = [[UILabel alloc] initWithFrame:CGRectMake((CGRectGetWidth(self.window.bounds) - kMeterWidth) / 2.0, 0.0,                                                                kMeterWidth, CGRectGetHeight(self.window.bounds))];    self.meterLabel.font = [UIFont boldSystemFontOfSize:12.0];    self.meterLabel.backgroundColor = [UIColor blackColor];    self.meterLabel.textColor = [UIColor whiteColor];    self.meterLabel.textAlignment = NSTextAlignmentCenter;    self.meterLabel.text = @"touch here to go back";    [self.window addSubview:self.meterLabel];    self.window.hidden = NO;    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{        self.window = nil;    });}