问题描述
我是iPhone开发的新手。我已经浏览了一些探索页面,在iOS4的Info.plist中创建了UIBackgroundModes键。但是它有点难以理解。请提供一些一步一步的程序与截图示例,以便于理解...还指定所需的要求,即iPhone,操作系统版本4.0 ...
I'm new to iPhone development.I have already gone through some of the exploring pages to create UIBackgroundModes key in Info.plist for iOS4 .But it is little bit difficult to understand . Kindly provide some step by step procedure with screenshot example for easy understanding...also specify what the requirements which are needed ie iPhone, OS version 4.0...
推荐答案
UIBackgroundModes键标识应用程序支持的后台任务。它的值是一个包含一个或多个具有以下值的字符串的数组:
The UIBackgroundModes key identifies which background tasks your application supports. Its value is an array that contains one or more strings with the following values:
- audio - 应用程序在用户播放可听内容时背景。
- 位置 - 即使在后台运行,应用程序也会通知用户他们的位置。
- voip - 应用程序提供的功能用户使用Internet连接拨打电话。
您可以在Xcode上编辑Info.plist文件。要添加新密钥,请单击 + 标志并写入:
You can edit the Info.plist file on Xcode. To add a new key, click on the + sign and write:
iOS 4
UIBackgroundModes 作为密钥,确保将类型设置为字符串,然后在值中写入 audio ,位置或 voip 取决于您的需求:
"UIBackgroundModes" as the key, make sure the type is set to string and then in value write audio, location or voip depending on your needs:
iOS 6
所需的背景模式作为键,然后在下拉菜单中设置类型。
"Required background modes" as the key and then set the type in drop down menu.
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