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我已将 SVG 图像加载到 UIWebView 中，但没有发生从 SVG 图像的选择位置渲染数据的工作魅力。即使我被搜索了更多关于我没有得到任何关于这个功能的信息。同样，我尝试过 SVGKit，但我不了解 SVGKit 的完整场景，所以我选择 UIWebView 的原因。如果有人知道这个功能，请在此处发表评论。
the SVG map seems like below one.i found few link about SVG image but those are not loading by UIWebView. SVGKIT & chensheng12330/SVGKitDemo
Best Answer-推荐答案
//Create a empty test.html and override below html code and reload the Webview.
-(UIWebView *)setup{
self.svgName=@"third";
//create a webview
UIWebView *webview = [[UIWebView alloc] init];
//create a empty html file and convert the svg into html and save dynamically
NSString *testPath = [[NSBundle mainBundle]pathForResource "test"ofType"html"inDirectory:nil ];
NSString *filePath = [self writeAndAppendString:[self getHTMLStringForLoadSVG:[self.svgName stringByAppendingString".svg"]] toFile:testPath];
//load svg file into the webview
//NSString *path = [[NSBundle mainBundle] pathForResource"loadSVG" ofType"html"];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:filePath];
NSURLRequest *req = [NSURLRequest requestWithURL:fileURL];
[ webview loadRequest:req];
[ webview setScalesPageToFit:YES];
[webview setUserInteractionEnabled:NO];
// webview.contentMode = UIViewContentModeScaleAspectFit;
[webview setBackgroundColor:[UIColor cyanColor]];
webview.delegate = self;
return webview;
}
//HTML file
-(NSString *)getHTMLStringForLoadSVG  NSString *)svgFileName{
NSString *jQueryLib = @"https://code.jquery.com/jquery-3.2.1.min.js";
NSString *idOfJQuery = @"test";
NSString *type = @"image/svg+xml";
NSString *id = @"test";
return [NSString stringWithFormat"<!DOCTYPE html>\n<html>\n<head>\n<script src='%@'></script>\n<script>\n window.clickedId;\n$(document).ready(function() {\nvar embed = document.getElementById('%@');\nembed.addEventListener('load', function(){\nvar svg = embed.getSVGDocument();\nvar pathElements = svg.getElementsByTagName('path');\nfor(var i=0;i<pathElements.length;i++){\n$(pathElements[i]).bind('click', function() {\nwindow.clickedId = $(this).attr('id');\n});\n}});\n});\nfunction clicked(){\n return window.clickedId;\n}</script>\n</head>\n<body>\n<embed src='%@' type='%@' id='%@'/>\n</body>\n</html>", jQueryLib,idOfJQuery,svgFileName,type,id];
}
- (void)tapActionUITapGestureRecognizer *)sender{
[self performSelectorselector(getJSObj) withObject:nil afterDelay:1.0];
}
-(void)getJSObj{
NSLog(@"return value :%@",[self.self.mapWebview stringByEvaluatingJavaScriptFromString"clicked()"]);
}
//write the code of converting svg to html code dynamically
- (NSString *)writeAndAppendStringNSString *)str toFileNSString *)fileName {
NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:fileName]) {
NSString *testP = [[paths firstObject] stringByAppendingPathComponent"testHtml.html"];
NSString *testPath = [[NSBundle mainBundle]pathForResource:svgName ofType"svg"inDirectory:nil ];
NSString *testSvgP = [[paths firstObject] stringByAppendingPathComponent:[svgName stringByAppendingString:@".svg"]];
[[NSFileManager defaultManager] copyItemAtPath:testPath toPath:testSvgP error:nil];
[[NSFileManager defaultManager] copyItemAtPath:fileName toPath:testP error:nil];
// Add the text at the end of the file.
NSFileHandle *fileHandler = [NSFileHandle fileHandleForUpdatingAtPath:testP];
// [fileHandler seekToEndOfFile];
[fileHandler writeData:data];
[fileHandler closeFile];
return testP;
}
return nil;
}
关于javascript - 在 Obj C 中，如何添加 SVG 蓝图图像并从 UIWebView 渲染数据？，我们在Stack Overflow上找到一个类似的问题：
https://stackoverflow.com/questions/43830427/
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