项目是用Swift写的，不过之前还是有OC版本的，但是后来由于一些**（不可描述的问题），才变成了现在的纯Swift版本。对于使用Swift开发的人员，直接仿照Demo操作即可。如果你是用Swift开发的，那下面的内容你可以不用看了。接下来我就讲一下针对OC引用DFU升级的操作步骤和我遇到的问题。
代码研究
nRF-Toolbox项目包含BGM，HRM，HTM，DFU等多个模块，我们今天只关注其中的DFU升级模块。打开项目，在对应的NORDFUViewController.swift中我们能够看到有三个引用库
import UIKit
import CoreBluetooth
import iOSDFULibrary
集成步骤
有两种方案集成：
通过cocoapods集成
编译出framework然后把库导入项目
第一种方案是作者推荐的，但是我试了很久，引入DFULibrary会出现头文件找不到等一系列问题，无奈只能放弃，如果有人通过这种方式成功，还望告知。
下面讲的是通过第二种方案的集成。
第一步：导出iOSDFULibrary
这一步是最关键也是最容易出问题的，这个库也是由Swift写成的，我们将这个库clone到本地，然后选择iOSDFULibrary
进行编译
最后生成两个framework:
iOSDFULibrary.framework
Zip.framework
1、On your mac please install carthage (instructions)
2、Create a file named cartfile anywhere on your computer
3、add the following content to the file:
github "NordicSemiconductor/IOS-Pods-DFU-Library" ~> 2.1.2
github "marmelroy/Zip" ~> 0.6
1、Open a new terminal and cd to the directory where the file is
2、Enter the command carthage update --platform iOS
3、Carthage will now take care of building your frameworks, the produced .framework files will be found in a newly created directory called Carthage/Build/iOS,copy over iOSDFULibrary.framework and Zip.framework to your project and you are good to go.
第二步、导入framework
Target->General
直接拖入项目默认只会导入到Linked Frameworks and Libraries，我们还需要在Embeded Binaries中引入。
第三步、使用iOSDFULibrary
//create a DFUFirmware object using a NSURL to a Distribution Packer(ZIP)
DFUFirmware *selectedFirmware = [[DFUFirmware alloc] initWithUrlToZipFile:url];// or
//Use the DFUServiceInitializer to initialize the DFU process.
DFUServiceInitiator *initiator = [[DFUServiceInitiator alloc] initWithCentralManager: centralManager target:selectedPeripheral];
[initiator withFirmware:selectedFirmware];
// Optional:
// initiator.forceDfu = YES/NO; // default NO
// initiator.packetReceiptNotificationParameter = N; // default is 12
initiator.logger = self; // - to get log info
initiator.delegate = self; // - to be informed about current state and errors
initiator.progressDelegate = self; // - to show progress bar
// initiator.peripheralSelector = ... // the default selector is used
DFUServiceController *controller = [initiator start];
库中有三个代理方法DFUProgressDelegate，DFUServiceDelegate，LoggerDelegate，它们的作用分别为监视DFU升级进度，DFU升级及蓝牙连接状态，打印状态日志。
常见问题
1、selectedFirmware返回nil
DFUFirmware *selectedFirmware = [[DFUFirmware alloc] initWithUrlToZipFile:url];
需要在General的Embeded Binaries选项卡里导入那Zip.framework和iOSDFULibrary.framework
2、崩溃报错
dyld: Library not loaded: @rpath/libswiftCore.dylibReferenced from: /private/var/containers/Bundle/Application/02516D79-BB30-4278-81B8-3F86BF2AE2A7/XingtelBLE.app/Frameworks/iOSDFULibrary.framework/iOSDFULibraryReason: image not found
需要改两个地方
03.png 04.png如果不起作用，将Runpath Search Paths的选项内容删掉再重新添加一遍即可
3、打包上架时报ERROR IT MS-90087等问题
问题描述：
ERROR ITMS-90087: "Unsupported Architectures. The executable for ***.app/Frameworks/SDK.framework contains unsupported architectures '[x86_64, i386]'."
ERROR ITMS-90362: "Invalid Info.plist value. The value for the key 'MinimumOSVersion' in bundle ***.app/Frameworks/SDK.framework is invalid. The minimum value is 8.0"
ERROR ITMS-90209: "Invalid Segment Alignment. The app binary at '***.app/Frameworks/SDK.framework/SDK' does not have proper segment alignment. Try rebuilding the app with the latest Xcode version."
ERROR ITMS-90125: "The binary is invalid. The encryption info in the LC_ENCRYPTION_INFO load command is either missing or invalid, or the binary is already encrypted. This binary does not seem to have been built with Apple's linker."
解决方法，添加Run Script Phase
Shell脚本内容填写如下内容，再次编译即可
APP_PATH="${TARGET_BUILD_DIR}/${WRAPPER_NAME}"
# This script loops through the frameworks embedded in the application and
# removes unused architectures.
find "$APP_PATH" -name '*.framework' -type d | while read -r FRAMEWORK
do
FRAMEWORK_EXECUTABLE_NAME=$(defaults read "$FRAMEWORK/Info.plist" CFBundleExecutable)
FRAMEWORK_EXECUTABLE_PATH="$FRAMEWORK/$FRAMEWORK_EXECUTABLE_NAME"
echo "Executable is $FRAMEWORK_EXECUTABLE_PATH"
EXTRACTED_ARCHS=()
for ARCH in $ARCHS
do
echo "Extracting $ARCH from $FRAMEWORK_EXECUTABLE_NAME"
lipo -extract "$ARCH" "$FRAMEWORK_EXECUTABLE_PATH" -o "$FRAMEWORK_EXECUTABLE_PATH-$ARCH"
EXTRACTED_ARCHS+=("$FRAMEWORK_EXECUTABLE_PATH-$ARCH")
done
echo "Merging extracted architectures: ${ARCHS}"
lipo -o "$FRAMEWORK_EXECUTABLE_PATH-merged" -create "${EXTRACTED_ARCHS[@]}"
rm "${EXTRACTED_ARCHS[@]}"
echo "Replacing original executable with thinned version"
rm "$FRAMEWORK_EXECUTABLE_PATH"
mv "$FRAMEWORK_EXECUTABLE_PATH-merged" "$FRAMEWORK_EXECUTABLE_PATH"
done
完整OC项目
以下为更新内容，时间：2017.12.26
收到很多关于无法适配Xcode9.2的反馈，因为最近比较忙没时间处理，不好意思啦，今天抽出时间来把代码更新了一下。
Xcode9.2 出现的问题
1、dyld: Library not loaded: @rpath/libswiftCore.dylib
Referenced from: /private/var/containers/Bundle/Application/02516D79-BB30-4278-81B8-3F86BF2AE2A7/XingtelBLE.app/Frameworks/iOSDFULibrary.framework/iOSDFULibrary
Reason: image not found
2、DFUFirmware *selectedFirmware = [[DFUFirmware alloc] initWithUrlToZipFile:url]; 返回为空或者崩溃问题
我的测试结果是更新iOSDFULibrary. framework和Zip.framework可以解决以上问题。
解决方案 Carthage
1、安装brew
/usr/bin/ruby -e "$(curl -fsSL
2、brew更新
brew update
3、安装Carthage
brew install carthage
4、使用Carthage
cd ~/路径/项目文件夹 /**进入项目文件夹下*/
touch Cartfile /**创建carthage文件*/
open Cartfile /**打开carthage文件*/
/**输入以下内容*/
github "NordicSemiconductor/IOS-Pods-DFU-Library" ~> 4.1
github "marmelroy/Zip" ~> 1.1
5、运行Carthage
carthage update --platform iOS /**编译出iOS版本*/
6、更新framework
cd Carthage/Build/iOS /**framework输出位置，将老的framework替换掉*/
注意
nRF Toolbox项目方法变更
[initiator withFirmwareFile:selectedFirmware];/** 旧版本方法 */
initiator = [initiator withFirmware:selectedFirmware];/** 新版本方法 */