1. 首先在javascript中加入相关代码
$(‘.content .saveCode‘).on(‘touchstart‘, function () {//touchstart if (temp == 0) { jump(); } if (temp == 1) { android.savePic(image.src); } }); function jump() {//IOS var touchstart = true; window.location = "/touchstart"; //改变URL 注意:要使用"/"分隔符 } function postStr() {//IOS return image.src; }
2. iOS保存图片到本地代码
// 当加载完网页取到imageurl- (void)webViewDidFinishLoad:(UIWebView *)webView { _urlString = [_myWebView stringByEvaluatingJavaScriptFromString:@"postStr();"]; NSLog(@"%@",_urlString); } // 调用次序 - shouldStart->FinishLoad->回调block函数- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { if ([request.mainDocumentURL.relativePath isEqualToString:@"/touchstart"]) { UIImageFromURL( [NSURL URLWithString:_urlString], ^( UIImage * image ) { UIImageWriteToSavedPhotosAlbum( image, self, @selector( onSaveComplete:didFinishSavingWithError:contextInfo: ), nil ); }, ^(void){ NSLog(@"error!"); }); return false; } return true; } void UIImageFromURL( NSURL * URL, void (^imageBlock)(UIImage * image), void (^errorBlock)(void) ) { dispatch_async( dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_DEFAULT, 0 ), ^(void) { NSData * data = [[NSData alloc] initWithContentsOfURL:URL]; UIImage * image = [[UIImage alloc] initWithData:data]; dispatch_async( dispatch_get_main_queue(), ^(void){ if( image != nil ) { imageBlock( image ); } else { errorBlock(); } }); }); }
时间: 2024-09-29 01:34:51