无法在iOS4的Info.plist中创建UIBackgroundModes密钥 [英] Unable to create UIBackgroundModes key in Info.plist for iOS4

问题描述

我有一个音频应用程序，非常适合iPhone 3.1.x版本.

I have an audio application which works great for iPhone 3.1.x versions.

我正在尝试将其升级到 iOS4.0 以在多任务环境中工作.当我尝试在info.plist中创建新的UIBackgroundModes键时，它(必需的背景模式")没有显示在下拉列表中吗?

I am trying to upgrade it to iOS4.0 to work in multitasking environment. When I try to create a new UIBackgroundModes key in info.plist, it ("Required Background Modes") doesn't show up in drop down list?

我还将Xcode SDK升级到3.2.3，将Base SDK升级到4.0，将部署目标升级到4.0，但是UIBackgroundModes(必需的后台模式")仍然不会显示在info.plist下拉列表中.

I also upgraded the Xcode SDK to 3.2.3, Base SDK to 4.0, deployment target to 4.0 but still UIBackgroundModes ("Required Background Modes") won't show up in info.plist drop down list.

我还为4.0创建了测试项目，其info.list下拉列表具有所需的后台模式".

I also created test project for 4.0, and its info.list drop down list has "Required Background Modes".

我错过了什么吗?

推荐答案

您可以通过编辑.plist文件来手动添加密钥

You can add the key manually by edit the .plist file

    <key>UIBackgroundModes</key>
    <array>
            <string>audio</string>
    </array>

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