weex-31-接入iOS完整步骤

#import <Foundation/Foundation.h>
#import <WeexSDK/WeexSDK.h>
@interface WXImgLoaderDefaultImpl :     NSObject<WXImgLoaderProtocol, WXModuleProtocol>
@end

#import "WXImgLoaderDefaultImpl.h"
#import <SDWebImage/UIImageView+WebCache.h>
@interface WXImgLoaderDefaultImpl()
@property (strong, nonatomic) dispatch_queue_t ioQueue;
@end
@implementation WXImgLoaderDefaultImpl
- (id<WXImageOperationProtocol>)downloadImageWithURL:(NSString *)url imageFrame:(CGRect)imageFrame userInfo:(NSDictionary *)userInfo completed:(void(^)(UIImage *image,  NSError *error, BOOL finished))completedBlock
{
return (id<WXImageOperationProtocol>)[[SDWebImageManager sharedManager] downloadImageWithURL:[NSURL URLWithString:url] options:0 progress:^(NSInteger receivedSize, NSInteger expectedSize) {
} completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
    if (completedBlock) {
        completedBlock(image, error, finished);
    }
}];
}

#import <WeexSDK/WeexSDK.h>

[WXSDKEngine initSDKEnvironment];
[WXSDKEngine registerHandler:[WXImgLoaderDefaultImpl new] withProtocol:@protocol(WXImgLoaderProtocol)];// 注册图片下载操作

#import <WeexSDK/WeexSDK.h>

 _instance = [[WXSDKInstance alloc] init];

_instance.viewController = self;
_instance.frame = [UIScreen mainScreen].bounds; // 设置当前布局范围 这个很重要一定要设置 不然渲染的时候,可能会出现问题

 _instance.onCreate = ^(UIView *view) {}

_instance.onCreate = ^(UIView *view) {
    [weakSelf.weexView removeFromSuperview];
    weakSelf.weexView = view;
    [weakSelf.view addSubview:weakSelf.weexView];
}

  _instance.renderFinish = ^(UIView *view) {
 [weakSelf.weexView removeFromSuperview];
    weakSelf.weexView = view;
    [weakSelf.view addSubview:weakSelf.weexView];
  };

- (void)renderWithURL:(NSURL *)url;

 _instance.onFailed = ^(NSError *error) {}