想问下这句 oc 代码的用 swift3 应该怎么调用？

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最近在用 oc 到 swift 的迁移，对 swift 实在生疏，oc 中的 TZImagePickController 中有这么一个属性

@property (nonatomic, copy) void (^didFinishPickingPhotosHandle)(NSArray<UIImage *> *photos,NSArray *assets,BOOL isSelectOriginalPhoto);

先前的调用方式是这样的

[imagePickerVc setDidFinishPickingPhotosHandle:^(NSArray<UIImage *> *photos, NSArray *assets, BOOL isSelectOriginalPhoto) { _fileArr = photos; NSString *webImg =[NSString stringWithFormat:@"[""]; for (int i=0; i<photos.count; i++) { // [self htmlForJPGImage:photos[i]] webImg =[webImg stringByAppendingString:[self htmlForJPGImage:photos[i]]]; webImg = [webImg stringByAppendingString:@"""]; if (i != photos.count - 1) { webImg = [webImg stringByAppendingString:@",""]; } else { webImg = [webImg stringByAppendingString:@"]"]; } } NSLog(@"%@",webImg); [self evaluateJsCode:callback val:webImg webview:self.webview]; }];

想问下改写成 swift3 应该怎么写？

3 条回复 • 2018-01-09 16:06:52 +08:00

mufeng

2018-01-09 15:49:12 +08:00

imagePickerVc?.didFinishPickingPhotosHandle = { (photos, assets, isSelectOriginalPhoto) -> Void in
/// ba la ba la
}

jecshcier

2018-01-09 16:06:02 +08:00

@mufeng 我试过这么写，结果报了以下错

Cannot assign value of type '([UIImage]!, [AnyObject]!, Bool) -> Void' to type '(([UIImage]?, [Any]?, Bool) -> Void)!'

jecshcier

2018-01-09 16:06:52 +08:00

@mufeng 我是这么写的

imagePickerVc?.didFinishPickingPhotosHandle = {(photos:[UIImage]!,assets:[AnyObject]!,isSelectOriginalPhoto:Bool) -> Void in

}