iOS分享到Facebook/微信/Line C++接口

//
// DoShare.h
// DoShare
//
// Created by zhai chunlin on 15/11/11.
// Copyright (c) 2015年 YA. All rights reserved.
//

#import <Foundation/Foundation.h>

typedef enum : NSUInteger {
DoWXShare,
DoFacebookShare,
DoLineShare,
} DoShareType;

#if defined(__cplusplus)
extern "C"{
#endif
//分享结果回调函数类型声明
typedef void (*DoShareCallBack)(DoShareType shareType, int resultStatus);

//分享
extern void iosDoShare(DoShareType shareType, const char *appID, const char *title, const char *description, const char *imagePath);

//注册回调函数
extern void iosSetShareListener(DoShareCallBack callback);
#if defined(__cplusplus)
}
#endif

这里调用OC方法时使用NSClassFromString动态加载某个类，这样做就不用在该文件中import三方SDK的头文件了。当只需要接入某几个SDK的时候，也不需要改动该文件，只要不加载那些不需要的SDK就可以了。注意：需要在Other
Lind Flag中加入 “-all_load”，或者-force_load指定库文件
，保证需要的类已被加载。

类似方法还有NSGetSizeAndAlignment、NSSelectorFromString、NSStringFromClass、NSStringFromSelector.

//
//  DoShare.m
//  DoShare
//
//  Created by zhai chunlin on 15/11/11.
//  Copyright (c) 2015年 YA. All rights reserved.
//

#import "DoShare.h"
#import "DoshareNotification.h"

@interface DoShare : NSObject

@end

#if defined(__cplusplus)
"C"{
#endif

DoShareCallBack _callBack;

DoShare *_share;

static id _objc = nil;

//字符串转化的工具函数
NSString *_CreateNSString(const char *string)
{
if (string) {

return [NSString stringWithUTF8String:string];
} else {

return @"";
}
}

void iosDoShare(DoShareType shareType, const char *appID, const char *title, const char *description, const char *imagePath)
{
if (!_share) {

_share = [[DoShare alloc] init];
}

NSMutableDictionary *mDict = [NSMutableDictionary dictionary];

[mDict setValue:_CreateNSString(appID) forKey:@"appID"];

[mDict setValue:_CreateNSString(title) forKey:@"title"];

[mDict setValue:_CreateNSString(description) forKey:@"description"];

[mDict setValue:_CreateNSString(imagePath) forKey:@"imagePath"];

if (shareType == DoWXShare) {

Class myClass = NSClassFromString(@"DoWXShare");

if (myClass) {

if (!_objc) {

_objc = [[myClass alloc] init];
}

[[NSNotificationCenter defaultCenter] postNotificationName:kDoShareWXShareNotification object:nil userInfo:mDict];
}
} else if (shareType == DoFacebookShare) {

Class myClass = NSClassFromString(@"DoFacebookShare");

if (myClass) {

if (!_objc) {

_objc = [[myClass alloc] init];
}

[[NSNotificationCenter defaultCenter] postNotificationName:kDoShareFacebookShareNotification object:nil userInfo:mDict];
}
} else if (shareType == DoLineShare) {

Class myClass = NSClassFromString(@"DoLineShare");

if (myClass) {

if (!_objc) {

_objc = [[myClass alloc] init];
}

[[NSNotificationCenter defaultCenter] postNotificationName:kDoShareLineShareNotification object:nil userInfo:mDict];
}
}
}

void iosSetShareListener(DoShareCallBack callback)
{
_callBack = callback;
}

#if defined(__cplusplus)
}
#endif

@implementation DoShare

- (instancetype)init
{
if (self = [super init]) {

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(DoShareResultNotification:) name:kDoShareResultNotification object:nil];
}

return self;
}

- (void)DoShareResultNotification:(NSNotification *)notification
{
NSDictionary *dict = [notification userInfo];

int type = [[dict objectForKey:@"shareType"] intValue];

DoShareType shareType;

switch (type) {
case 0:
shareType = DoWXShare;
break;
case 1:
shareType = DoFacebookShare;
break;
case 2:
shareType = DoLineShare;
break;
default:
break;
}

BOOL result = [[dict objectForKey:@"errorCode"] boolValue];

NSLog(@"errorCode = %d",[[dict objectForKey:@"errorCode"] boolValue]);

_callBack(shareType,result);
}

@end

在做台湾Line分享图片的时候遇到了UIPasteboard以前没有用过，这个东西是创建剪切板，如果是系统级别的可以在应用间共享剪切板内容，具体可以自己了解一下。

- (void)DoLineShare:(NSNotification *)notification
{
NSDictionary *dict = [notification userInfo];

NSString *imagePath = [dict objectForKey:@"imagePath"];

UIPasteboard *pasteBoard = [UIPasteboard generalPasteboard];

pasteBoard.image = [UIImage imageWithContentsOfFile:imagePath];

NSString *linePath = @"line://msg/image";

NSString *finalPath = [NSString stringWithFormat:@"%@/%@",linePath,pasteBoard.name];

_path = finalPath;

NSLog(@"finalPath = %@",finalPath);

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:finalPath]];

}