如何在Swift中编写Cordova插件?
我将现有自定义插件转换为Swift语言: (位于如何在Swift中编写Cordova插件?,cordova,swift,Cordova,Swift,我将现有自定义插件转换为Swift语言: (位于插件/custompluginswift.swift下) 我有两个问题: CDVPlugin未找到 Javascript没有看到插件:custompluginswift: CDVPlugin类CustomPluginInSwift(pluginName:CustomPluginInSwift)不存在 我留下了相同的config.xml,但它没有按预期工作 我的问题在哪里 CDVPlugin未找到 当您第一次创建swift文件时,Xcode要求您
插件/custompluginswift.swift
下)
我有两个问题:
未找到CDVPlugin
- Javascript没有看到插件:
:custompluginswift
config.xml
,但它没有按预期工作
我的问题在哪里
CDVPlugin
未找到
当您第一次创建swift文件时,Xcode要求您生成
-桥接头.h
带有空内容的头:
//
// Use this file to import your target's public headers that you would like to expose to Swift.
//
在此标题中添加:
#import <Cordova/CDVPlugin.h>
如何知道什么是合适的索引
[步骤2]
当您启动custompluginswift
类的实例时,如:
var temp:CustomPluginInSwift = CustomPluginInSwift()
,Swift将向-Swift.h
标题添加新类名。问题是在项目中看不到此标题
如何找到它?
- 转到xCode->Window->Organizer->“项目选项卡”
- 选择您的项目
- 复制“派生数据”路径(对于我来说:
)~/Library/Developer/Xcode/DerivedData/-hbgwavxfqvhwxzagxhgzjvsdrkjk
- 转到控制台并运行
cd~/Library/Developer/Xcode/DerivedData/-hbgwavxfqvhwxzagzjvsdrkjk
- 运行之后:
cd Build/Intermediates/.Build/Debug iphoneos/.Build/DerivedSources/
-Swift.h
的文件,其中包含以下内容:
/* ... */
SWIFT_CLASS("_TtC8Wanameet14CustomPluginInSwift")
@interface CustomPluginInSwift : CDVPlugin
- (void)getSettings:(CDVInvokedUrlCommand *)command;
- (instancetype)initWithWebView:(UIWebView *)theWebView OBJC_DESIGNATED_INITIALIZER;
- (instancetype)init OBJC_DESIGNATED_INITIALIZER;
@end
/* ... */
@objc(HWPMyPlugin) class MyPlugin : CDVPlugin { // see @tsubik answer
/* ... */
}
因此我们得到了正确的名称:\u TtC8Wanameet14CustomPluginInSwift
[步骤3]
现在,转到config.xml
并更改为:
<feature name="CustomPluginInSwift">
<param name="ios-package" value="CustomPluginInSwift" />
</feature>
解析javascript请求并立即返回答案的方法示例:
func someMethod(command: CDVInvokedUrlCommand){
println("MyPlugin :: someMethod is called")
let callbackId:String = command.callbackId
var obj:AnyObject = command.arguments[0] as AnyObject!
var eventStructure:AnyObject = obj["eventStructure"]
var eventId:String = eventStructure["_id"] as AnyObject! as String
println("MyPlugin :: someMethod :: _id: \(eventId) ")
self.commandDelegate.runInBackground({
// 'jw' is some class
var data:NSData = jw.toJson()
var str:String = jw.toJsonString(data)
var obj:JSONObject = jw.getJSONObjectFromNSData(data)
println("sampleList as String: \(str)")
var pluginResult:CDVPluginResult = CDVPluginResult(status: CDVCommandStatus_OK, messageAsDictionary: obj)
self.commandDelegate.sendPluginResult(pluginResult, callbackId:command.callbackId)
})
}
返回空callabck并在一段时间后返回答案的方法示例:
func someMethod(command: CDVInvokedUrlCommand){
println("MyPlugin :: someMethod is called")
let callbackId:String = command.callbackId
var obj:AnyObject = command.arguments[0] as AnyObject!
var eventStructure:AnyObject = obj["eventStructure"]
var eventId:String = eventStructure["_id"] as AnyObject! as String
println("MyPlugin :: someMethod :: _id: \(eventId) ")
self.commandDelegate.runInBackground({
// 'jw' is some class
var data:NSData = jw.toJson()
var str:String = jw.toJsonString(data)
var obj:JSONObject = jw.getJSONObjectFromNSData(data)
println("sampleList as String: \(str)")
var pluginResult:CDVPluginResult = CDVPluginResult(status: CDVCommandStatus_OK, messageAsDictionary: obj)
self.commandDelegate.sendPluginResult(pluginResult, callbackId:command.callbackId)
})
}
当您尝试通过异步方式在本机端获取一些数据时,我使用了很多这种方法:
protocol AccountLoaderListenerItf {
func onAccountsDone(data:NSData)
}
@objc(HWPMyPlugin) class MyPlugin : CDVPlugin, AccountLoaderListenerItf {
var mCalendarAccountsCallbackContext:String?
func getCalendarAccounts( command: CDVInvokedUrlCommand ){
println("MyPlugin :: getCalendarAccounts is called")
self.mCalendarAccountsCallbackContext = command.callbackId
self.commandDelegate.runInBackground({
var all:AccountLoaderListenerItf = self
var accounts = MyAccounts(accLoader: all)
accounts.populateFromCalendars()
var pluginResult:CDVPluginResult = CDVPluginResult(status:CDVCommandStatus_NO_RESULT)
pluginResult.setKeepCallbackAsBool(true)
self.commandDelegate.sendPluginResult(pluginResult, callbackId:command.callbackId)
})
} // func
/* .... */
func onAccountsDone(data:NSData){
if self.mCalendarAccountsCallbackContext != nil {
var list:JSONArray = WmUtils.getJSONArrayFromNSData(data) // dummy data
var pluginResult:CDVPluginResult = CDVPluginResult(status: CDVCommandStatus_OK, messageAsArray: list)
pluginResult.setKeepCallbackAsBool(false)
self.commandDelegate.sendPluginResult(pluginResult, callbackId:self.mCalendarAccountsCallbackContext)
}
}
}
如上所述,您必须添加一个桥接头.h文件,其中包含
#import <Cordova/CDV.h>
此外,为了让Objective-C看到相同的插件类名,您需要在类声明中添加@objc映射。它可以与swift类名本身相同,也可以不同。在本例中,“HWPCustomPluginInSwift”将是Objective-C(和Javascript)最终看到的内容:
@objc(HWPCustomPluginInSwift) class CustomPluginInSwift : CDVPlugin {
然后,config.xml文件中的功能节点应该如下所示:
<feature name="CustomPluginInSwift">
<param name="ios-package" value="HWPCustomPluginInSwift" />
</feature>
我认为它是更好的解决方案。应该注意的是,当前的Cordova版本(4.3.0)似乎没有生成与Swift兼容的XCode项目。如果您使用的是Cordova CLI,则可能需要下载边缘版本以使项目正确生成。请参阅:目前我正在使用钩子在xCode项目中启用swift支持。很高兴知道他们正在使用内置解决方案。我在这里编写了关于如何使用最新的XCode 8.2/Swift 3执行此操作的教程:还要确保在Swift方法定义之前添加@objc(getSettings:)
!否则,您必须将js中的操作标记为“getSettingsCommand”
your-app-name/plugins/com.plugin.example/bridging-header.h
@objc(HWPCustomPluginInSwift) class CustomPluginInSwift : CDVPlugin {
<feature name="CustomPluginInSwift">
<param name="ios-package" value="HWPCustomPluginInSwift" />
</feature>