flutter 创建插件

news2024/11/19 5:36:46

资料：

flutter与原生通信的方式简介 - 简书

完整流程 Flutter 集成 Golang 多语言跨端开发基础案例 - 知乎

https://www.cnblogs.com/webabcd/p/flutter_lib_plugin_plugin_ios.html

步骤1、创建插件

我创建的插件名字是konnect_im_sdk 选择的语言是 java和swift创建。

直接把插件放在项目中 plugins/konnect_im_sdk 如下

然后再项目的pubspec.yaml 引入本地项目插件

konnect_im_sdk:

path: plugins/konnect_im_sdk

然后再插件的ios项目目录下创建 Products 将完整流程 Flutter 集成 Golang 多语言跨端开发基础案例 - 知乎

生成的object-c的ios第三方sdk放进去

然后在 .podspec 文件配置第三方sdk的路径

s.vendored_frameworks = 'Products/*.framework'

s.static_framework = true

Classes 下的文件中导入第三方库如这样的

现在就可以调用object-c中的方法了

object-c 中声明文件

FOUNDATION_EXPORT BOOL Konnect_im_sdkInitSDK(id<Konnect_im_sdk_callbackOnConnListener> _Nullable listener, NSString* _Nullable operationID, NSString* _Nullable config);

@protocol Konnect_im_sdk_callbackOnConnListener;
@class Konnect_im_sdk_callbackOnConnListener;

@protocol Konnect_im_sdk_callbackOnBatchMsgListener <NSObject>
- (void)onRecvNewMessages:(NSString* _Nullable)messageList;
@end

@protocol Konnect_im_sdk_callbackOnConnListener <NSObject>
- (void)onConnectFailed:(int32_t)errCode errMsg:(NSString* _Nullable)errMsg;
- (void)onConnectSuccess;
- (void)onConnecting;
- (void)onKickedOffline;
- (void)onUserTokenExpired;
@end

@interface Konnect_im_sdk_callbackOnConnListener : NSObject <goSeqRefInterface, Konnect_im_sdk_callbackOnConnListener> {
}
@property(strong, readonly) _Nonnull id _ref;

- (nonnull instancetype)initWithRef:(_Nonnull id)ref;
- (void)onConnectFailed:(int32_t)errCode errMsg:(NSString* _Nullable)errMsg;
- (void)onConnectSuccess;
- (void)onConnecting;
- (void)onKickedOffline;
- (void)onUserTokenExpired;
@end

调用

Konnect_im_sdkInitSDK 第一个参数是这样写的

 class MyConnectionListener:  Konnect_im_sdk_callbackOnConnListener {
    override func onConnectFailed(_ errCode: Int32, errMsg: String?) {
        print("连接失败，错误码：\(errCode)，错误信息：\(errMsg ?? "")")
    }
    
    override func onConnectSuccess() {
        print("连接成功")
    }
    
    override func onConnecting() {
        print("正在连接...")
    }
    
    override func onKickedOffline() {
        print("您已被踢下线")
    }
    
    override func onUserTokenExpired() {
        print("用户令牌已过期")
    }
}

运行可以运行但是报错了报错同 go_seq_go_to_refnum on objective-c objects is not permitted

https://github.com/golang/go/issues/20254

记 IOS Swift 实现 gomobile interface 抛出异常 go_seq_go_to_refnum on objective-c objects is not permitted

swift 中是不存在多继承的下面的写法又报多继承

 class MyConnectionListener: NSObject, Konnect_im_sdk_callbackOnConnListener {
     func onConnectFailed(_ errCode: Int32, errMsg: String?) {
        print("连接失败，错误码：\(errCode)，错误信息：\(errMsg ?? "")")
    }
    
     func onConnectSuccess() {
        print("连接成功")
    }
    
     func onConnecting() {
        print("正在连接...")
    }
    
     func onKickedOffline() {
        print("您已被踢下线")
    }
    
     func onUserTokenExpired() {
        print("用户令牌已过期")
    }
}

那么 Konnect_im_sdk_callbackOnConnListener是一个类不是协议说明声明文件中Konnect_im_sdk_callbackOnConnListener定义有问题

找到第三方sdk定义的地方注释掉