迭代 Jiri 的答案，这将使您非常接近。将MTStatusBarOverlay 替换为CWStatusBarNotification。为了处理视图控制器之间的模态转换，我使用了MusicPlayerTransition。我们假设 self.view 中的 imageView: "art" 带有 frame:CGRect(0, 0, self.view.bounds.size.width, self.view.bounds.size.width)。需要一点按摩，但你明白了要点。注意：虽然我们不是“活”的，但我们最多只能关闭一秒钟，并且不会保留电池颜色。此外，您需要将 CWStatusBarNotification.m 中的动画时间设置为零。 （notificationAnimationDuration 属性）。
#import "CWStatusBarNotification.h"
#define kStatusTextOffset 5.4 // (rough guess of) space between window's origin.y and status bar label's origin.y
@interface M_Player () <UIGestureRecognizerDelegate>
@property (retain) UIView *fakeStatusBarView;
@property (retain) CWStatusBarNotification *fakeStatusBar;
@property (retain) UIImageView *statusImgView;
@property (retain) UIImageView *statusImgViewCopy;
@property (retain) UIWindow *window;
@property (strong, nonatomic) NSTimer *statusTimer;
@end
@implementation M_Player
@synthesisze fakeStatusBarView, fakeStatusBar, statusImgView, statusImgViewCopy, window, statusTimer;
-(void)viewDidLoad{
self.window = [[UIApplication sharedApplication] delegate].window;
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handleStatusBarDrag:)];
pan.delegate = self;
[self.view addGestureRecognizer:pan];
}
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
if (!fakeStatusBar){
[self buildFakeStatusBar];
}
if (!statusTimer) {
[self setupStatusBarImageUpdateTimer];
}
// optional
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
[self setNeedsStatusBarAppearanceUpdate];
-(void)viewDidDisappear:(BOOL)animated{
[super viewDidDisappear:animated];
[self destroyStatusBarImageUpdateTimer];
}
-(void)destroyFakeStatusBar{
[statusImgView removeFromSuperview];
statusImgView = nil;
[fakeStatusBarView removeFromSuperview];
fakeStatusBarView = nil;
fakeStatusBar = nil;
}
-(void)buildFakeStatusBar{
UIWindow *statusBarWindow = [[UIApplication sharedApplication] valueForKey:@"_statusBarWindow"]; // This window is actually still fullscreen. So we need to capture just the top 20 points.
UIGraphicsBeginImageContext(self.view.bounds.size);
[statusBarWindow.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
CGRect rect = CGRectMake(0, 0, self.view.bounds.size.width, 20);
CGImageRef imageRef = CGImageCreateWithImageInRect([viewImage CGImage], rect);
UIImage *statusImg = [UIImage imageWithCGImage:imageRef];
CGImageRelease(imageRef);
statusImg = [statusImg imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate]; // This allows us to set the status bar content's color via the imageView's .tintColor property
statusImgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, 20)];
statusImgView.image = statusImg;
statusImgView.tintColor = [UIColor colorWithWhite:0.859 alpha:1.000]; // any color you want
statusImgViewCopy = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, 20)];
statusImgViewCopy.image = statusImg;
statusImgViewCopy.tintColor = statusImgView.tintColor;
fakeStatusBarView = nil;
fakeStatusBar = nil;
fakeStatusBarView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, 20)];
[fakeStatusBarView addSubview:statusImgView];
fakeStatusBar = [CWStatusBarNotification new];
fakeStatusBar.notificationStyle = CWNotificationStyleStatusBarNotification;
[fakeStatusBar displayNotificationWithView:fakeStatusBarView forDuration:CGFLOAT_MAX];
}
-(void)handleStatusBarDrag:(UIPanGestureRecognizer*)gestureRecognizer{
if (gestureRecognizer.state == UIGestureRecognizerStateBegan) {
}
if (gestureRecognizer.state == UIGestureRecognizerStateChanged){
CGPoint convertedPoint = [self.window convertPoint:art.frame.origin fromView:self.view];
CGFloat originY = convertedPoint.y - kStatusTextOffset;
if (originY > 0 && originY <= 10) { // the range of change we're interested in
//NSLog(@"originY:%f statusImgView.frame:%@", originY, NSStringFromCGRect(statusImgView.frame));
// render in context from new originY using our untouched copy as reference view
UIGraphicsBeginImageContext(self.view.bounds.size);
[statusImgViewCopy.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
CGRect rect = CGRectMake(0, kStatusTextOffset + originY, self.view.bounds.size.width, 20);
CGImageRef imageRef = CGImageCreateWithImageInRect([viewImage CGImage], rect);
UIImage *statusImg = [UIImage imageWithCGImage:imageRef];
CGImageRelease(imageRef);
statusImgView.image = statusImg;
statusImgView.transform = CGAffineTransformMakeTranslation(0, kStatusTextOffset + originY);
}
// destroy
if (originY > 90) {
[self destroyFakeStatusBar];
}
}
if (gestureRecognizer.state == UIGestureRecognizerStateEnded){
}
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
return YES;
}
要使您的状态栏屏幕截图与实际状态栏保持同步，请设置您的计时器。在 viewWillAppear 中触发它，并在 viewDidDisappear 中杀死它。
-(void)setupStatusBarImageUpdateTimer{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
dispatch_async(dispatch_get_main_queue(), ^(){
// main thread
if (!statusTimer) {
statusTimer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(handleStatusTimer:) userInfo:nil repeats:YES];
[[NSRunLoop currentRunLoop] addTimer:statusTimer forMode:NSRunLoopCommonModes];
}
});
});
}
-(void)destroyStatusBarImageUpdateTimer{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
dispatch_async(dispatch_get_main_queue(), ^(){
// main thread
[statusTimer invalidate];
statusTimer = nil;
});
});
}
-(void)handleStatusTimer:(NSTimer*)timer{
UIWindow *statusBarWindow = [[UIApplication sharedApplication] valueForKey:@"_statusBarWindow"];
UIGraphicsBeginImageContext(CGSizeMake(self.view.bounds.size.width, 20));
[statusBarWindow.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
CGRect rect = CGRectMake(0, 0, self.view.bounds.size.width, 20);
CGImageRef imageRef = CGImageCreateWithImageInRect([viewImage CGImage], rect);
UIImage *statusImg = [UIImage imageWithCGImage:imageRef];
CGImageRelease(imageRef);
statusImg = [statusImg imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
statusImgViewCopy.image = statusImg;
}
因为我们对定时器有很强的引用，并且设置和失效发生在同一个线程上，所以不用担心定时器失效。
最终结果应如下所示：