在 iTunes 中为 iPod shuffle（第 3 代）启用 VoiceOver 后，iPod shuffle 可在播放内容时读出歌曲、表演者和播放列表的名称。
本文章已经归档，因此 Apple 将不再对其进行更新。
您可以在首次设置具有 iTunes 的 iPod 时启用 VoiceOver，也可以稍后在 iTunes 的 iPod 设置中的&摘要&标签中进行设置。
iPod 设置助理
iTunes 中的&摘要&标签
在&iPod 设置助理&或&摘要&标签中选择&启用 VoiceOver&选项后，系统会引导您安装 VoiceOver 套件。有关此过程的更多信息，请参考下列步骤。
如果已启用 VoiceOver，请使用 Apple Software Update 检查并安装更新。Windows 用户可以查看。
选择 VoiceOver 选项后，点按&iPod 设置助理&中的完成或&摘要&标签中的应用。
系统会提示您查看有关 VoiceOver 的信息。点按&下一步&。
此时您将会看到&软件许可协议&。点按&同意&。
系统将提示您授权安装 VoiceOver 套件：
在 Mac OS X 中，系统将会提示您输入管理员用户名和密码（如果是以管理员身份登录的，则只需输入密码）。
在 Windows Vista 和 Windows 7 中，系统将会提示您选择&取消&或&允许&（如果使用的是具有管理权限的帐户），或者输入所选管理帐户的密码（如果使用的是受限用户帐户），以授权安装&iPod 语音支持&。
在 Windows XP 中，如果使用的是受限用户帐户，则系统将会提示您输入具有管理权限的帐户用户名和密码。如果是以管理员帐户登录的，则不会再出现提示。
VoiceOver 套件安装完成后，iTunes 即会生成将同步到 iPod shuffle 的 VoiceOver 信息。
VoiceOver 支持以下语言：
中文（粤语和普通话）、捷克语、丹麦语、荷兰语、英语、芬兰语、法语、德语、希腊语、意大利语、日语、韩语、挪威语、波兰语、葡萄牙语、俄语、西班牙语、瑞典语和土耳其语。
选择 VoiceOver 内容的默认语言
打开 iTunes 并连接 iPod shuffle（第 3 代）。
在&设备&部分中选择&iPod shuffle&，然后选择&摘要&标签。
在&语音反馈&下，从语言弹出式菜单中选取所需的语言。
重要信息:有关非 Apple 生产的产品的信息仅供参考，并不代表 Apple 的建议或认可。更多信息，请联系供应商。iOS 7 - NSHipster
Written by
September 23rd, 2013
With the NDA finally lifted, we can finally talk about all of the amazing new APIs in iOS 7. And there are a lot of them. &1500 new APIs&, by Apple&s count during the WWDC Keynote. (Granted, a good portion of that could just be all of the changes from id to instancetype, but that&s a huge number, regardless).
We&ll be going over many of the new features iOS 7 in depth over the coming weeks, but with all of the excitement around this major release, this week&s issue will hit on some of the gems hiding in plain sight: NSData Base64 encoding, NSURLComponents, NSProgress, CIDetectorSmile, CIDetectorEyeBlink, SSReadingList, AVCaptureMetaDataOutput, AVSpeechSynthesizer, and MKDistanceFormatter.
NSData (NSDataBase64Encoding)
is a general term for encoding binary data as ASCII text. This is used all over the place on the web, since many core technologies are designed to support text, but not raw binary. For instance, CSS can embed images with , which are often Base64-encoded. Another example is , which Base64-encodes its username/password pair, which is marginally better than having them completely in the clear.
For the longest time, this boringly essential function was completely MIA, leaving thousands of developers to copy-paste random code snippets from forum threads. It was an omission as conspicuous and annoying as JSON pre-iOS 5.
But no longer! iOS 7 finally bakes-in Base64:
let string = &Lorem ipsum dolor sit amet.&
if let data = string.dataUsingEncoding(NSUTF8StringEncoding) {
let base64EncodedString = data.base64EncodedStringWithOptions([])
print(base64EncodedString)
// TG9yZW0gaXBzdW0gZG9sYXIgc2l0IGFtZXQu
NSString *string = @&Lorem ipsum dolor sit amet.&;
NSString *base64EncodedString = [[string dataUsingEncoding:NSUTF8StringEncoding] base64EncodedStringWithOptions:0];
NSLog(@&%@&, base64EncodedString);
// TG9yZW0gaXBzdW0gZG9sYXIgc2l0IGFtZXQu
NSURLComponents & NSCharacterSet (NSURLUtilities)
Foundation is blessed with a wealth of functionality for working with URIs. Unfortunately, many of the APIs for manipulating URLs are strewn across NSString, since NSURL is immutable.
NSURLComponents dramatically improves this situation. Think of it as NSMutableURL:
if let components = NSURLComponents(string: &http://nshipster.com&) {
components.path = &/iOS7&
components.query = &foo=bar&
print(components.scheme!)
print(components.URL!)
// http://nshipster.com/iOS7?foo=bar
NSURLComponents *components = [NSURLComponents componentsWithString:@&http://nshipster.com&];
components.path = @&/iOS7&;
components.query = @&foo=bar&;
NSLog(@&%@&, components.scheme);
NSLog(@&%@&, [components URL]);
// http://nshipster.com/iOS7?foo=bar
Each property for URL components also has a percentEncoded* variation (e.g. user & percentEncodedUser), which forgoes any additional URI percent encoding of special characters.
Which characters are special, you ask? Well, it depends on what part of the URL you&re talking about. Good thing that NSCharacterSet adds a new category for allowed URL characters in iOS 7:
+ (id)URLUserAllowedCharacterSet
+ (id)URLPasswordAllowedCharacterSet
+ (id)URLHostAllowedCharacterSet
+ (id)URLPathAllowedCharacterSet
+ (id)URLQueryAllowedCharacterSet
+ (id)URLFragmentAllowedCharacterSet
NSProgress
NSProgress is a tough class to describe. It acts as both an observer and a delegate / coordinator, acting as a handle for reporting and monitoring progress. It integrates with system-level processes on OS X, but can also be plugged into user-facing UI. It can specify handlers for pausing and canceling, which then forward onto the operation actually doing the work.
Anything with a notion of completed and total units is a candidate for NSProgress, whether it&s the bytes written to a file, the number of frames in a large render job, or the files downloaded from a server.
NSProgress can be used to simply report overall progress in a localized way:
let progress = NSProgress(totalUnitCount: 100)
progress.completedUnitCount = 42;
print(progress.localizedDescription) // 42% completed
NSProgress *progress = [NSProgress progressWithTotalUnitCount:100];
progress.completedUnitCount = 42;
NSLog(@&%@&, [progress localizedDescription]); // 42% completed
&or it can be given a handler for stopping work entirely:
let timer = NSTimer(timeInterval: 1.0, target: self, selector: &incrementCompletedUnitCount:&,
userInfo: nil, repeats: true)
progress.cancellationHandler = {
timer.invalidate()
progress.cancel()
NSTimer *timer = [NSTimer timerWithTimeInterval:1.0
target:self
selector:@selector(incrementCompletedUnitCount:) userInfo:nil
repeats:YES];
progress.cancellationHandler = ^{
[timer invalidate];
[progress cancel];
NSProgress makes a lot more sense in the context of OS X Mavericks, but for now, it remains a useful class for encapsulating the shared patterns of work units.
NSArray -firstObject
Rejoice! The NSRangeException-dodging convenience of -lastObject has finally been extended to the first member of an NSArray. (Well, it has been there as a private API since ~iOS 4, but that&s water under the bridge now).
let array = [1, 2, 3] as NSArray
print(&First Object: \(array.firstObject)&)
// First Object: Optional(1)
print(&Last Object: \(array.lastObject)&)
// Last Object: Optional(3)
NSArray *array = @[@1, @2, @3];
NSLog(@&First Object: %@&, [array firstObject]); // First Object: 1
NSLog(@&Last Object: %@&, [array lastObject]);
// Last Object: 3
Refreshing!
CIDetectorSmile & CIDetectorEyeBlink
As a random aside, shouldn&t it be a cause for concern that the device most capable of taking embarrassing photos of ourselves is also the device most capable of distributing it to millions or people? Just a thought.
Since iOS 5, the Core Image framework has provided facial detection and recognition functionality through the CIDetector class. If it wasn&t insaneballs enough that we could detect faces in photos, in iOS 7 we can even tell if that face is smiling or has its eyes closed. *shudder*
In yet another free app idea, here&s a snippet that might be used by a camera that only saves pictures of smiling faces:
import CoreImage
let smileDetector = CIDetector(ofType: CIDetectorTypeFace, context: context,
options: [CIDetectorTracking: true, CIDetectorAccuracy: CIDetectorAccuracyLow])
var features = smileDetector.featuresInImage(ciImage, options: [CIDetectorSmile: true])
if let feature = features.first as? CIFaceFeature where feature.hasSmile {
UIImageWriteToSavedPhotosAlbum(UIImage(CIImage: ciImage), self, &didFinishWritingImage&, &features)
label.text = &Say Cheese!&
@import CoreImage;
CIDetector *smileDetector = [CIDetector detectorOfType:CIDetectorTypeFace
context:context
options:@{CIDetectorTracking: @YES,
CIDetectorAccuracy: CIDetectorAccuracyLow}];
NSArray *features = [smileDetector featuresInImage:ciImage options:@{CIDetectorSmile:@YES}];
if (([features count] & 0) && (((CIFaceFeature *)features[0]).hasSmile)) {
UIImageWriteToSavedPhotosAlbum([UIImage imageWithCIImage:ciImage], self, @selector(didFinishWritingImage), features);
self.label.text = @&Say Cheese!&
AVCaptureMetaDataOutput
Scan UPCs, QR codes, and barcodes of all varieties with AVCaptureMetaDataOutput, new to iOS 7. All you need to do is set it up as the output of an AVCaptureSession, and implement the captureOutput:didOutputMetadataObjects:fromConnection: method accordingly:
import AVFoundation
let session = AVCaptureSession()
let device = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo)
var error: NSError?
let input = try AVCaptureDeviceInput(device: device)
session.addInput(input)
} catch let error {
print(&Error: \(error)&)
let output = AVCaptureMetadataOutput()
output.setMetadataObjectsDelegate(self, queue: dispatch_get_main_queue())
session.addOutput(output)
output.metadataObjectTypes = [AVMetadataObjectTypeQRCode]
session.startRunning()
// MARK: - AVCaptureMetadataOutputObjectsDelegate
func captureOutput(
captureOutput: AVCaptureOutput!,
didOutputMetadataObjects metadataObjects: [AnyObject]!,
fromConnection connection: AVCaptureConnection!) {
var QRCode: String?
for metadata in metadataObjects as! [AVMetadataObject] {
if metadata.type == AVMetadataObjectTypeQRCode {
// Th nobody has ever scanned a QR code... ever
QRCode = (metadata as! AVMetadataMachineReadableCodeObject).stringValue
print(&QRCode: \(QRCode)&)
@import AVFoundation;
AVCaptureSession *session = [[AVCaptureSession alloc] init];
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
NSError *error = nil;
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device
error:&error];
if (input) {
[session addInput:input];
NSLog(@&Error: %@&, error);
AVCaptureMetadataOutput *output = [[AVCaptureMetadataOutput alloc] init];
[output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
[session addOutput:output];
[output setMetadataObjectTypes:@[AVMetadataObjectTypeQRCode]];
[session startRunning];
#pragma mark - AVCaptureMetadataOutputObjectsDelegate
- (void)captureOutput:(AVCaptureOutput *)captureOutput
didOutputMetadataObjects:(NSArray *)metadataObjects
fromConnection:(AVCaptureConnection *)connection
NSString *QRCode = nil;
for (AVMetadataObject *metadata in metadataObjects) {
if ([metadata.type isEqualToString:AVMetadataObjectTypeQRCode]) {
// Th nobody has ever scanned a QR code... ever
QRCode = [(AVMetadataMachineReadableCodeObject *)metadata stringValue];
NSLog(@&QR Code: %@&, QRCode);
AVFoundation supports every code you&ve heard of (and probably a few that you haven&t):
AVMetadataObjectTypeUPCECode
AVMetadataObjectTypeCode39Code
AVMetadataObjectTypeCode39Mod43Code
AVMetadataObjectTypeEAN13Code
AVMetadataObjectTypeEAN8Code
AVMetadataObjectTypeCode93Code
AVMetadataObjectTypeCode128Code
AVMetadataObjectTypePDF417Code
AVMetadataObjectTypeQRCode
AVMetadataObjectTypeAztecCode
If nothing else, AVCaptureMetaDataOutput makes it possible to easily create a Passbook pass reader for the iPhone and iPad. There&s still a lot of unrealized potential in Passbook, so here&s to hoping that this API will be a factor in more widespread adoption.
SSReadingList
Even though the number of people who have actually read something saved for later is only marginally greater than , it&s nice that iOS 7 adds a way to add items to the Safari reading list with the new Safari Services framework.
import SafariServices
let url = NSURL(string: &http://nshipster.com/ios7&)!
try? SSReadingList.defaultReadingList()?.addReadingListItemWithURL(url, title: &NSHipster&, previewText: &...&)
@import SafariServices;
NSURL *URL = [NSURL URLWithString:@&http://nshipster.com/ios7&];
[[SSReadingList defaultReadingList] addReadingListItemWithURL:URL
title:@&NSHipster&
previewText:@&...&
error:nil];
AVSpeechSynthesizer
Text-to-Speech has been the killer feature of computers for
enthusiasts since its inception in the late 1960s.
iOS 7 brings the power of Siri with the convenience of a
in a new class AVSpeechSynthesizer:
import AVFoundation
let synthesizer = AVSpeechSynthesizer()
let utterance = AVSpeechUtterance(string: &Just what do you think you're doing, Dave?&)
utterance.rate = AVSpeechUtteranceMinimumSpeechRate
// Tell it to me slowly
synthesizer.speakUtterance(utterance)
@import AVFoundation;
AVSpeechSynthesizer *synthesizer = [[AVSpeechSynthesizer alloc] init];
AVSpeechUtterance *utterance = [AVSpeechUtterance speechUtteranceWithString:@&Just what do you think you're doing, Dave?&];
utterance.rate = AVSpeechUtteranceMinimumSpeechRate;
// Tell it to me slowly
[synthesizer speakUtterance:utterance];
MKDistanceFormatter
Finally, we end our showcase of iOS 7&s new and noteworthy APIs with another class that has NSHipsters crying out &finally!&: MKDistanceFormatter.
As advertised, MKDistanceFormatter provides a way to convert distances into localized strings using either imperial or metric units:
import CoreLocation
import MapKit
let sanFrancisco = CLLocation(latitude: 37.775, longitude: -122.4183333)
let portland = CLLocation(latitude: 45.5236111, longitude: -122.675)
let distance = portland.distanceFromLocation(sanFrancisco)
let formatter = MKDistanceFormatter()
formatter.units = .Imperial
print(formatter.stringFromDistance(distance)) // 535 miles
@import CoreLocation;
@import MapKit;
CLLocation *sanFrancisco = [[CLLocation alloc] initWithLatitude:37.775 longitude:-122.4183333];
CLLocation *portland = [[CLLocation alloc] initWithLatitude:45.5236111 longitude:-122.675];
CLLocationDistance distance = [portland distanceFromLocation:sanFrancisco];
MKDistanceFormatter *formatter = [[MKDistanceFormatter alloc] init];
formatter.units = MKDistanceFormatterUnitsImperial;
NSLog(@&%@&, [formatter stringFromDistance:distance]); // 535 miles
So there you have it! This was just a small sample of the great new features of iOS 7. Still craving more? Check out Apple&s
guide on the Developer Center.
NSMutableHipster
Questions? Corrections?
are always welcome — NSHipster is made better by readers like you.
This article uses Swift version 2.0 and was last reviewed on Sep 12, 2015.
Find status information for all articles on the .
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() is a writer and developer from the Rustbelt.
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Questions? Corrections?
NSHipster.com is released under a .iphone7怎么关闭盲人模式_百度知道
iphone7怎么关闭盲人模式
我有更好的答案
iPhone7关闭盲人模式及时关闭VoiceOver语音播报功能。iPhone7关闭盲人模式具体操作方法如下：1、进入手机设置。2、点击通用进入。3、点击辅助功能进入。4、找到VoiceOver，点击VoiceOver进入并关闭即可。
数码爱好者
轻按一次来选中“VoiceOver”，再按二次进入开关切换选项，所以无论三个手指怎么上下滑动，屏幕都不会滚动，并且还会听到“咚咚”的声音，这表明所指的地方不支持屏幕滚动。正确的操作方法是，我们就成功地把 VoiceOver 关闭了，接着再按二次把 VoiceOver 关闭，最后。重点：VoiceOver 有一个触摸焦点，比如触摸焦点在“设置”按钮上，再轻按一次来选中“VoiceOver”，再按二次进入辅助功能选项，然后，接下来，轻按屏幕中间任意一个选项，就会看到被选中的项目有一个黑框，然后我们再用三个手指来滚动屏幕，用三个手指向上滑动，找到下面的“辅助功能”，轻按一次选中，滚动到下面的选项。关闭方法还是需要点技巧的iphone盲人模式怎么关闭的解决方案：打开手机上的“设置-通用”，找到通用选项里的“辅助功能”
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