ios10適配相關問題總結

原創 xiaoxiaoqunqun 2020-02-22 12:23

隨着iOS10發佈的臨近,大家的App都需要適配iOS10,下面是我總結的一些關於iOS10適配方面的問題,如果有錯誤,歡迎指出.

1.系統判斷方法失效:

在你的項目中,當需要判斷系統版本的話,不要使用下面的方法:

<code class="cpp">#<span class="hljs-keyword">define</span> isiOS10 ([[[[UIDevice currentDevice] systemVersion] substringToIndex:<span class="hljs-number">1</span>] intValue]>=<span class="hljs-number">10</span>)</code>

它會永遠返回NO,substringToIndex:1在iOS 10 會被檢測成 iOS 1了,
應該使用下面的這些方法:
Objective-C 中這樣寫:

<code class="lisp">#define SYSTEM_VERSION_EQUAL_TO<span class="hljs-list">(<span class="hljs-keyword">v</span>)</span> <span class="hljs-list">([[[UIDevice currentDevice] systemVersion] compare<span class="hljs-keyword">:v</span> options<span class="hljs-keyword">:NSNumericSearch</span>] == NSOrderedSame)</span>
#define SYSTEM_VERSION_GREATER_THAN<span class="hljs-list">(<span class="hljs-keyword">v</span>)</span> <span class="hljs-list">([[[UIDevice currentDevice] systemVersion] compare<span class="hljs-keyword">:v</span> options<span class="hljs-keyword">:NSNumericSearch</span>] == NSOrderedDescending)</span>
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO<span class="hljs-list">(<span class="hljs-keyword">v</span>)</span> <span class="hljs-list">([[[UIDevice currentDevice] systemVersion] compare<span class="hljs-keyword">:v</span> options<span class="hljs-keyword">:NSNumericSearch</span>] != NSOrderedAscending)</span>
#define SYSTEM_VERSION_LESS_THAN<span class="hljs-list">(<span class="hljs-keyword">v</span>)</span> <span class="hljs-list">([[[UIDevice currentDevice] systemVersion] compare<span class="hljs-keyword">:v</span> options<span class="hljs-keyword">:NSNumericSearch</span>] == NSOrderedAscending)</span>
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO<span class="hljs-list">(<span class="hljs-keyword">v</span>)</span> <span class="hljs-list">([[[UIDevice currentDevice] systemVersion] compare<span class="hljs-keyword">:v</span> options<span class="hljs-keyword">:NSNumericSearch</span>] != NSOrderedDescending)</span></code>

或者使用:

<code class="objectivec"><span class="hljs-keyword">if</span> ([[<span class="hljs-built_in">NSProcessInfo</span> processInfo] isOperatingSystemAtLeastVersion:(<span class="hljs-built_in">NSOperatingSystemVersion</span>){<span class="hljs-variable">.majorVersion</span> = <span class="hljs-number">9</span>, <span class="hljs-variable">.minorVersion</span> = <span class="hljs-number">1</span>, <span class="hljs-variable">.patchVersion</span> = <span class="hljs-number">0</span>}]) { <span class="hljs-built_in">NSLog</span>(<span class="hljs-string">@"Hello from > iOS 9.1"</span>);}
<span class="hljs-keyword">if</span> ([<span class="hljs-built_in">NSProcessInfo</span><span class="hljs-variable">.processInfo</span> isOperatingSystemAtLeastVersion:(<span class="hljs-built_in">NSOperatingSystemVersion</span>){<span class="hljs-number">9</span>,<span class="hljs-number">3</span>,<span class="hljs-number">0</span>}]) { <span class="hljs-built_in">NSLog</span>(<span class="hljs-string">@"Hello from > iOS 9.3"</span>);}</code>

或者使用:

<code class="ruby"><span class="hljs-keyword">if</span> (<span class="hljs-constant">NSFoundationVersionNumber</span> > <span class="hljs-constant">NSFoundationVersionNumber_iOS_9_0</span>) { <span class="hljs-regexp">//</span> <span class="hljs-keyword">do</span> stuff <span class="hljs-keyword">for</span> iOS <span class="hljs-number">9</span> <span class="hljs-keyword">and</span> newer} <span class="hljs-keyword">else</span> { <span class="hljs-regexp">//</span> <span class="hljs-keyword">do</span> stuff <span class="hljs-keyword">for</span> older versions than iOS <span class="hljs-number">9</span>}</code>

有時候會缺少一些常量,NSFoundationVersionNumber是在NSObjCRuntime.h中定義的,作爲Xcode7.3.1的一部分,我們設定常熟範圍從iPhone OS 2到#define NSFoundationVersionNumber_iOS_8_4 1144.17,在iOS 10(Xcode 8)中,蘋果補充了缺少的數字,設置有未來的版本.

<code class="cpp"><span class="hljs-preprocessor">#<span class="hljs-keyword">define</span> NSFoundationVersionNumber_iOS_9_0 <span class="hljs-number">1240.1</span></span>
<span class="hljs-preprocessor">#<span class="hljs-keyword">define</span> NSFoundationVersionNumber_iOS_9_1 <span class="hljs-number">1241.14</span></span>
<span class="hljs-preprocessor">#<span class="hljs-keyword">define</span> NSFoundationVersionNumber_iOS_9_2 <span class="hljs-number">1242.12</span></span>
<span class="hljs-preprocessor">#<span class="hljs-keyword">define</span> NSFoundationVersionNumber_iOS_9_3 <span class="hljs-number">1242.12</span></span>
<span class="hljs-preprocessor">#<span class="hljs-keyword">define</span> NSFoundationVersionNumber_iOS_9_4 <span class="hljs-number">1280.25</span></span>
<span class="hljs-preprocessor">#<span class="hljs-keyword">define</span> NSFoundationVersionNumber_iOS_9_x_Max <span class="hljs-number">1299</span></span></code>

Swift中這樣寫:

<code class="cpp"><span class="hljs-function"><span class="hljs-keyword">if</span> <span class="hljs-title">NSProcessInfo</span><span class="hljs-params">()</span>.<span class="hljs-title">isOperatingSystemAtLeastVersion</span><span class="hljs-params">(NSOperatingSystemVersion(majorVersion: <span class="hljs-number">10</span>, minorVersion: <span class="hljs-number">0</span>, patchVersion: <span class="hljs-number">0</span>)</span>) </span>{ 
         <span class="hljs-comment">// 代碼塊</span>
}</code>

或者使用

<code class="cpp"><span class="hljs-keyword">if</span> <span class="hljs-preprocessor">#available(iOS <span class="hljs-number">10.0</span>, *) { </span>
         <span class="hljs-comment">// 代碼塊</span>
} <span class="hljs-keyword">else</span> { 
         <span class="hljs-comment">// 代碼塊</span>
}</code>

2.隱私數據訪問問題:

你的項目中訪問了隱私數據,比如:相機,相冊,聯繫人等,在Xcode8中打開編譯的話,統統會crash,控制檯會輸出下面這樣的日誌:


Snip20160905_1.png

這是因爲iOS對用戶的安全和隱私的增強,在申請很多私有權限的時候都需要添加描述,但是,在使用Xcode 8之前的Xcode還是使用系統的權限通知框.
要想解決這個問題,只需要在info.plist添加NSContactsUsageDescription的key, value自己隨意填寫就可以,這裏列舉出對應的key(Source Code模式下):

<code class="xml"><span class="hljs-comment"><!-- 相冊 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSPhotoLibraryUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問相冊<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 相機 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSCameraUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問相機<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 麥克風 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSMicrophoneUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問麥克風<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 位置 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSLocationUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問位置<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 在使用期間訪問位置 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSLocationWhenInUseUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能在使用期間訪問位置<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 始終訪問位置 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSLocationAlwaysUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能始終訪問位置<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 日曆 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSCalendarsUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問日曆<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 提醒事項 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSRemindersUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問提醒事項<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 運動與健身 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSMotionUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> <span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問運動與健身<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 健康更新 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSHealthUpdateUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問健康更新 <span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 健康分享 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSHealthShareUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問健康分享<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 藍牙 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSBluetoothPeripheralUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問藍牙<span class="hljs-tag"></<span class="hljs-title">string</span>></span> 
<span class="hljs-comment"><!-- 媒體資料庫 --></span> 
<span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSAppleMusicUsageDescription<span class="hljs-tag"></<span class="hljs-title">key</span>></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>App需要您的同意,才能訪問媒體資料庫<span class="hljs-tag"></<span class="hljs-title">string</span>></span></code>

如果不起作用,可以請求後臺權限,類似於這樣:

<code class="xml"><span class="hljs-tag"><<span class="hljs-title">key</span>></span>UIBackgroundModes<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
<span class="hljs-tag"><<span class="hljs-title">array</span>></span> 
<span class="hljs-comment"><!-- 在這裏寫上你在後臺模式下要使用權限對應的key --></span> 
<span class="hljs-tag"><<span class="hljs-title">string</span>></span>location<span class="hljs-tag"></<span class="hljs-title">string</span>></span>
...
<span class="hljs-tag"></<span class="hljs-title">array</span>></span></code>

或者在Xcode裏選中當前的target,選擇Capabilities,找到Background Modes,打開它,在裏面選擇對應權限


後臺模式的操作.png

3.UIColor的問題

官方文檔中說:大多數core開頭的圖形框架和AVFoundation都提高了對擴展像素和寬色域色彩空間的支持.通過圖形堆棧擴展這種方式比以往支持廣色域的顯示設備更加容易。現在對UIKit擴展可以在sRGB的色彩空間下工作，性能更好,也可以在更廣泛的色域來搭配sRGB顏色.如果你的項目中是通過低級別的api自己實現圖形處理的,建議使用sRGB,也就是說在項目中使用了RGB轉化顏色的建議轉換爲使用sRGB,在UIColor類中新增了兩個api:

<code class="objectivec">- (<span class="hljs-built_in">UIColor</span> *)initWithDisplayP3Red:(<span class="hljs-built_in">CGFloat</span>)displayP3Red green:(<span class="hljs-built_in">CGFloat</span>)green blue:(<span class="hljs-built_in">CGFloat</span>)blue alpha:(<span class="hljs-built_in">CGFloat</span>)alpha <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
+ (<span class="hljs-built_in">UIColor</span> *)colorWithDisplayP3Red:(<span class="hljs-built_in">CGFloat</span>)displayP3Red green:(<span class="hljs-built_in">CGFloat</span>)green blue:(<span class="hljs-built_in">CGFloat</span>)blue alpha:(<span class="hljs-built_in">CGFloat</span>)alpha <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);</code>

4.真彩色的顯示

真彩色的顯示會根據光感應器來自動的調節達到特定環境下顯示與性能的平衡效果,如果需要這個功能的話,可以在info.plist裏配置(在Source Code模式下):

<code class="xml"><span class="hljs-tag"><<span class="hljs-title">key</span>></span>UIWhitePointAdaptivityStyle<span class="hljs-tag"></<span class="hljs-title">key</span>></span></code>

它有五種取值,分別是:

<code class="cs"><<span class="hljs-keyword">string</span>>UIWhitePointAdaptivityStyleStandard</<span class="hljs-keyword">string</span>> <span class="hljs-comment">// 標準模式</span>
<<span class="hljs-keyword">string</span>>UIWhitePointAdaptivityStyleReading</<span class="hljs-keyword">string</span>> <span class="hljs-comment">// 閱讀模式</span>
<<span class="hljs-keyword">string</span>>UIWhitePointAdaptivityStylePhoto</<span class="hljs-keyword">string</span>> <span class="hljs-comment">// 圖片模式</span>
<<span class="hljs-keyword">string</span>>UIWhitePointAdaptivityStyleVideo</<span class="hljs-keyword">string</span>> <span class="hljs-comment">// 視頻模式</span>
<<span class="hljs-keyword">string</span>>UIWhitePointAdaptivityStyleStandard</<span class="hljs-keyword">string</span>> <span class="hljs-comment">// 遊戲模式</span></code>

也就是說如果你的項目是閱讀類的,就選擇UIWhitePointAdaptivityStyleReading這個模式,五種模式的顯示效果是從上往下遞減,也就是說如果你的項目是圖片處理類的,你選擇的是閱讀模式,給選擇太好的效果會影響性能.

5.ATS的問題

1.在iOS 9的時候,默認非HTTS的網絡是被禁止的,我們可以在info.plist文件中添加NSAppTransportSecurity字典,將NSAllowsArbitraryLoads設置爲YES來禁用ATS;
2.從2017年1月1日起,,所有新提交的 app 默認不允許使用NSAllowsArbitraryLoads來繞過ATS的限制,默認情況下你的 app 可以訪問加密足夠強的(TLS V1.2以上)HTTPS內容;
3.可以選擇使用NSExceptionDomains設置白名單的方式對特定的域名開放HTTP內容來通過審覈,比如說你的應用集成了第三方的登錄分享SDK,可以通過這種方式來做,下面以新浪SDK作爲示範(Source Code 模式下):

<code class="xml"> <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSAppTransportSecurity<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
 <span class="hljs-tag"><<span class="hljs-title">dict</span>></span>
  <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSExceptionDomains<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
  <span class="hljs-tag"><<span class="hljs-title">dict</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">key</span>></span>sina.cn<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">dict</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionMinimumTLSVersion<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">string</span>></span>TLSv1.0<span class="hljs-tag"></<span class="hljs-title">string</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionRequiresForwardSecrecy<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">false</span>/></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSIncludesSubdomains<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">true</span>/></span>
   <span class="hljs-tag"></<span class="hljs-title">dict</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">key</span>></span>weibo.cn<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">dict</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionMinimumTLSVersion<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">string</span>></span>TLSv1.0<span class="hljs-tag"></<span class="hljs-title">string</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionRequiresForwardSecrecy<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">false</span>/></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSIncludesSubdomains<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">true</span>/></span>
   <span class="hljs-tag"></<span class="hljs-title">dict</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">key</span>></span>weibo. com<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">dict</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionMinimumTLSVersion<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">string</span>></span>TLSv1.0<span class="hljs-tag"></<span class="hljs-title">string</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionRequiresForwardSecrecy<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">false</span>/></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSIncludesSubdomains<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">true</span>/></span>
   <span class="hljs-tag"></<span class="hljs-title">dict</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">key</span>></span>sinaimg.cn<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">dict</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionMinimumTLSVersion<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">string</span>></span>TLSv1.0<span class="hljs-tag"></<span class="hljs-title">string</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionRequiresForwardSecrecy<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">false</span>/></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSIncludesSubdomains<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">true</span>/></span>
   <span class="hljs-tag"></<span class="hljs-title">dict</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">key</span>></span>sinajs.cn<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">dict</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionMinimumTLSVersion<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">string</span>></span>TLSv1.0<span class="hljs-tag"></<span class="hljs-title">string</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionRequiresForwardSecrecy<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">false</span>/></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSIncludesSubdomains<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">true</span>/></span>
   <span class="hljs-tag"></<span class="hljs-title">dict</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">key</span>></span>sina.com.cn<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
   <span class="hljs-tag"><<span class="hljs-title">dict</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionMinimumTLSVersion<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">string</span>></span>TLSv1.0<span class="hljs-tag"></<span class="hljs-title">string</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSThirdPartyExceptionRequiresForwardSecrecy<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">false</span>/></span>
    <span class="hljs-tag"><<span class="hljs-title">key</span>></span>NSIncludesSubdomains<span class="hljs-tag"></<span class="hljs-title">key</span>></span>
    <span class="hljs-tag"><<span class="hljs-title">true</span>/></span>
   <span class="hljs-tag"></<span class="hljs-title">dict</span>></span>
  <span class="hljs-tag"></<span class="hljs-title">dict</span>></span>
 <span class="hljs-tag"></<span class="hljs-title">dict</span>></span></code>

4.在iOS 10 中info.plist文件新加入了NSAllowsArbitraryLoadsInWebContent鍵,允許任意web頁面加載,同時蘋果會用 ATS 來保護你的app;
5.安全傳輸不再支持SSLv3, 建議儘快停用SHA1和3DES算法;

6.UIStatusBar的問題:

在iOS10中,如果還使用以前設置UIStatusBar類型或者控制隱藏還是顯示的方法,會報警告,方法過期,如下圖:


UIStatusBar的警告.png


上面方法到 iOS 10 不能使用了,要想修改UIStatusBar的樣式或者狀態使用下圖中所示的屬性或方法:

<code class="objectivec"><span class="hljs-keyword">@property</span>(<span class="hljs-keyword">nonatomic</span>, <span class="hljs-keyword">readonly</span>) <span class="hljs-built_in">UIStatusBarStyle</span> preferredStatusBarStyle <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">7</span>_0) __TVOS_PROHIBITED; <span class="hljs-comment">// Defaults to UIStatusBarStyleDefault</span>
<span class="hljs-keyword">@property</span>(<span class="hljs-keyword">nonatomic</span>, <span class="hljs-keyword">readonly</span>) <span class="hljs-built_in">BOOL</span> prefersStatusBarHidden <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">7</span>_0) __TVOS_PROHIBITED; <span class="hljs-comment">// Defaults to NO</span>
- (<span class="hljs-built_in">UIStatusBarStyle</span>)preferredStatusBarStyle <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">7</span>_0) __TVOS_PROHIBITED; <span class="hljs-comment">// Defaults to UIStatusBarStyleDefault</span>
- (<span class="hljs-built_in">BOOL</span>)prefersStatusBarHidden <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">7</span>_0) __TVOS_PROHIBITED; <span class="hljs-comment">// Defaults to NO</span>
<span class="hljs-comment">// Override to return the type of animation that should be used for status bar changes for this view controller. This currently only affects changes to prefersStatusBarHidden.</span>
- (<span class="hljs-built_in">UIStatusBarAnimation</span>)preferredStatusBarUpdateAnimation <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">7</span>_0) __TVOS_PROHIBITED; <span class="hljs-comment">// Defaults to UIStatusBarAnimationFade</span></code>

7.UITextField

在iOS 10 中,UITextField新增了textContentType字段,是UITextContentType類型,它是一個枚舉,作用是可以指定輸入框的類型,以便系統可以分析出用戶的語義.是電話類型就建議一些電話,是地址類型就建議一些地址.可以在#import <UIKit/UITextInputTraits.h>文件中,查看textContentType字段,有以下可以選擇的類型:

<code class="objectivec"><span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeName</span>                      <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeNamePrefix</span>                <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeGivenName</span>                 <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeMiddleName</span>                <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeFamilyName</span>                <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeNameSuffix</span>                <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeNickname</span>                  <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeJobTitle</span>                  <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeOrganizationName</span>          <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeLocation</span>                  <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeFullStreetAddress</span>         <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeStreetAddressLine1</span>        <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeStreetAddressLine2</span>        <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeAddressCity</span>               <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeAddressState</span>              <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeAddressCityAndState</span>       <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeSublocality</span>               <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeCountryName</span>               <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypePostalCode</span>                <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeTelephoneNumber</span>           <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeEmailAddress</span>              <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeURL</span>                       <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);
<span class="hljs-built_in">UIKIT_EXTERN</span> <span class="hljs-built_in">UITextContentType</span> <span class="hljs-keyword">const</span> <span class="hljs-built_in">UITextContentTypeCreditCardNumber</span>          <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);</code>

8.UserNotifications(用戶通知)

iOS 10 中將通知相關的 API 都統一了,在此基礎上很多用戶定義的通知,並且可以捕捉到各個通知狀態的回調.以前通知的概念是:大家想接受的提前做好準備,然後一下全兩分發,沒收到也不管了,也不關心發送者,現在的用戶通知做成了類似於網絡請求,先發一個request得到response的流程,還封裝了error,可以在各個狀態的方法中做一些額外的操作,並且能獲得一些字段,比如發送者之類的.這個功能的頭文件是:#import <UserNotifications/UserNotifications.h>
主要有以下文件:

<code class="objectivec"><span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/NSString+UserNotifications.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNError.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotification.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotificationAction.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotificationAttachment.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotificationCategory.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotificationContent.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotificationRequest.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotificationResponse.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotificationSettings.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotificationSound.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotificationTrigger.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNUserNotificationCenter.h></span></span>
<span class="hljs-preprocessor">#import <span class="hljs-title"><UserNotifications/UNNotificationServiceExtension.h></span></span></code>

9.UICollectionViewCell的的優化

在iOS 10 之前,UICollectionView上面如果有大量cell,當用戶活動很快的時候,整個UICollectionView的卡頓會很明顯,爲什麼會造成這樣的問題,這裏涉及到了iOS 系統的重用機制,當cell準備加載進屏幕的時候,整個cell都已經加載完成,等待在屏幕外面了,也就是整整一行cell都已經加載完畢,這就是造成卡頓的主要原因,專業術語叫做:掉幀.
要想讓用戶感覺不到卡頓,我們的app必須幀率達到60幀/秒,也就是說每幀16毫秒要刷新一次.

iOS 10 之前UICollectionViewCell的生命週期是這樣的:
  • 1.用戶滑動屏幕,屏幕外有一個cell準備加載進來,把cell從reusr隊列拿出來,然後調用prepareForReuse方法,在這個方法裏面,可以重置cell的狀態,加載新的數據;
  • 2.繼續滑動,就會調用cellForItemAtIndexPath方法,在這個方法裏面給cell賦值模型,然後返回給系統;
  • 3.當cell馬上進去屏幕的時候,就會調用willDisplayCell方法,在這個方法裏面我們還可以修改cell,爲進入屏幕做最後的準備工作;
  • 4.執行完willDisplayCell方法後,cell就進去屏幕了.當cell完全離開屏幕以後,會調用didEndDisplayingCell方法.
iOS 10 UICollectionViewCell的生命週期是這樣的:
  • 1.用戶滑動屏幕,屏幕外有一個cell準備加載進來,把cell從reusr隊列拿出來,然後調用prepareForReuse方法,在這裏當cell還沒有進去屏幕的時候,就已經提前調用這個方法了,對比之前的區別是之前是cell的上邊緣馬上進去屏幕的時候就會調用該方法,而iOS 10 提前到cell還在屏幕外面的時候就調用;
  • 2.在cellForItemAtIndexPath中創建cell，填充數據，刷新狀態等操作,相比於之前也提前了;
  • 3.用戶繼續滑動的話,當cell馬上就需要顯示的時候我們再調用willDisplayCell方法,原則就是:何時需要顯示,何時再去調用willDisplayCell方法;
  • 4.當cell完全離開屏幕以後,會調用didEndDisplayingCell方法,跟之前一樣,cell會進入重用隊列.
    在iOS 10 之前,cell只能從重用隊列裏面取出,再走一遍生命週期,並調用cellForItemAtIndexPath創建或者生成一個cell.
    在iOS 10 中,系統會cell保存一段時間,也就是說當用戶把cell滑出屏幕以後,如果又滑動回來,cell不用再走一遍生命週期了,只需要調用willDisplayCell方法就可以重新出現在屏幕中了.
    iOS 10 中,系統是一個一個加載cell的,二以前是一行一行加載的,這樣就可以提升很多性能;
    iOS 10 新增加的Pre-Fetching預加載
    這個是爲了降低UICollectionViewCell在加載的時候所花費的時間,在 iOS 10 中,除了數據源協議和代理協議外,新增加了一個UICollectionViewDataSourcePrefetching協議,這個協議裏面定義了兩個方法:
<code class="objectivec">- (<span class="hljs-keyword">void</span>)collectionView:(<span class="hljs-built_in">UICollectionView</span> *)collectionView prefetchItemsAtIndexPaths:(<span class="hljs-built_in">NSArray</span><<span class="hljs-built_in">NSIndexPath</span> *> *)indexPaths <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);

- (<span class="hljs-keyword">void</span>)collectionView:(<span class="hljs-built_in">UICollectionView</span> *)collectionView cancelPrefetchingForItemsAtIndexPaths:(<span class="hljs-built_in">NSArray</span><<span class="hljs-built_in">NSIndexPath</span> *> *)indexPaths  <span class="hljs-built_in">NS_AVAILABLE_IOS</span>(<span class="hljs-number">10</span>_0);</code>

在ColletionView prefetchItemsAt indexPaths這個方法是異步預加載數據的,當中的indexPaths數組是有序的,就是item接收數據的順序;
CollectionView cancelPrefetcingForItemsAt indexPaths這個方法是可選的,可以用來處理在滑動中取消或者降低提前加載數據的優先級.
注意:這個協議並不能代替之前讀取數據的方法,僅僅是輔助加載數據.
Pre-Fetching預加載對UITableViewCell同樣適用.

10. UIRefreshControl的使用

在iOS 10 中, UIRefreshControl可以直接在UICollectionView和UITableView中使用,並且脫離了UITableViewController.現在RefreshControl是UIScrollView的一個屬性.
使用方法:

<code class="objectivec"><span class="hljs-built_in">UIRefreshControl</span> *refreshControl = [[<span class="hljs-built_in">UIRefreshControl</span> alloc] init];
    [refreshControl addTarget:<span class="hljs-keyword">self</span> action:<span class="hljs-keyword">@selector</span>(loadData) forControlEvents:<span class="hljs-built_in">UIControlEventValueChanged</span>];
    collectionView<span class="hljs-variable">.refreshControl</span> = refreshControl;</code>
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