{"id":1252,"date":"2023-06-16T12:04:41","date_gmt":"2023-06-16T04:04:41","guid":{"rendered":"https:\/\/www.zhidianwl.com\/zhidian\/2023\/1252\/"},"modified":"2023-06-16T12:04:41","modified_gmt":"2023-06-16T04:04:41","slug":"ios-%e7%94%9f%e6%88%90%e6%8e%a8%e8%8d%90%e4%bd%bf%e7%94%a8%e4%b8%80%e9%97%a8app%e5%bc%80%e5%8f%91%e5%b9%b3%e5%8f%b0","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.com\/zhidian\/2023\/1252\/","title":{"rendered":"ios \u751f\u6210\u63a8\u8350\u4f7f\u7528\u4e00\u95e8APP\u5f00\u53d1\u5e73\u53f0"},"content":{"rendered":"<p>iOS\u751f\u6210\u662f\u6307\u5728iOS\u8bbe\u5907\u4e0a\u751f\u6210\u4e00\u4e9b\u7279\u5b9a\u7684\u6570\u636e\u6216\u6587\u4ef6\uff0c\u4f8b\u5982\u4e8c\u7ef4\u7801\u3001PDF\u6587\u6863\u3001\u97f3\u9891\u6587\u4ef6\u7b49\u7b49\u3002iOS\u751f\u6210\u7684\u539f\u7406\u662f\u901a\u8fc7\u8c03\u7528\u7cfb\u7edf\u63d0\u4f9b\u7684API\uff0c\u4f7f\u7528\u7279\u5b9a\u7684\u7b97\u6cd5\u548c\u6570\u636e\u5904\u7406\u65b9\u6cd5\u6765\u751f\u6210\u76f8\u5e94\u7684\u6570\u636e\u6216\u6587\u4ef6\u3002<\/p>\n<p>\u4e0b\u9762\u5c06\u5206\u522b\u4ecb\u7ecdiOS\u751f\u6210\u4e2d\u5e38\u7528\u7684\u51e0\u79cd\u6280\u672f\u548c\u5e94\u7528\u3002<\/p>\n<p>1. \u4e8c\u7ef4\u7801\u751f\u6210<\/p>\n<p>\u4e8c\u7ef4\u7801\u662f\u4e00\u79cd\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u4e2a\u9886\u57df\u7684\u6570\u636e\u7f16\u7801\u65b9\u5f0f\uff0c\u901a\u8fc7\u626b\u63cf\u4e8c\u7ef4\u7801\u53ef\u4ee5\u83b7\u53d6\u76f8\u5e94\u7684\u4fe1\u606f\u3002\u5728iOS\u8bbe\u5907\u4e0a\uff0c\u53ef\u4ee5\u4f7f\u7528\u7cfb\u7edf\u63d0\u4f9b\u7684CoreImage\u6846\u67b6\u4e2d\u7684CIFilter\u7c7b\u6765\u751f\u6210\u4e8c\u7ef4\u7801\u3002\u5177\u4f53\u5b9e\u73b0\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p>&#8220;`<\/p>\n<p>\/\/\u521b\u5efa\u4e8c\u7ef4\u7801\u6ee4\u955c<\/p>\n<p>CIFilter *filter = [CIFilter filterWithName:@&#8221;CIQRCodeGenerator&#8221;];<\/p>\n<p>[filter setDefaults];<\/p>\n<p>\/\/\u8bbe\u7f6e\u4e8c\u7ef4\u7801\u6570\u636e<\/p>\n<p>NSString *dataString = @&#8221;https:\/\/www.example.com&#8221;;<\/p>\n<p>NSData *data = [dataString dataUsingEncoding:NSUTF8StringEncoding];<\/p>\n<p>[filter setValue:data forKey:@&#8221;inputMessage&#8221;];<\/p>\n<p>\/\/\u8bbe\u7f6e\u4e8c\u7ef4\u7801\u7ea0\u9519\u7ea7\u522b<\/p>\n<p>[filter setValue:@&#8221;H&#8221; forKey:@&#8221;inputCorrectionLeve<\/p>\n<p><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.cdn.yimenapp.com\/2023-04\/03\/17\/17876093895.jpg\" \/><\/figure>\n<\/p>\n<p>l&#8221;];<\/p>\n<p>\/\/\u83b7\u53d6\u6ee4\u955c\u751f\u6210\u7684\u56fe\u50cf<\/p>\n<p>CIImage *outputImage = [filter outputImage];<\/p>\n<p>\/\/\u5c06CIImage\u8f6c\u6362\u6210UIImage<\/p>\n<p>UIImage *qrImage = [UIImage imageWithCIImage:o<a href=\"https:\/\/www.yimenapp.net\/dabao-631.html\">\u7f51\u9875\u6253\u5305\u6210APP<\/a>utputImage];<\/p>\n<p>&#8220;`<\/p>\n<p>2. PDF\u6587\u6863\u751f\u6210<\/p>\n<p>\u5728iOS\u8bbe\u5907\u4e0a\uff0c\u53ef\u4ee5\u4f7f\u7528Quartz 2D\u6846\u67b6\u4e2d\u7684CGPDFContextRef\u6765\u751f\u6210PDF\u6587\u6863\u3002\u5177\u4f53\u5b9e\u73b0\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p>&#8220;`<\/p>\n<p>\/\/\u83b7\u53d6\u6587\u6863\u5b58\u50a8\u8def\u5f84<\/p>\n<p>NSString *pdfPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject stringByAppendingPathComponent:@&#8221;example.pdf&#8221;];<\/p>\n<p>\/\/\u521b\u5efaPDF\u6587\u6863\u4e0a\u4e0b\u6587<\/p>\n<p>CFURLRef pdfURL = (__bridge CFURLRef)[NSURL fileURLWithPath:pdfPath];<\/p>\n<p>CGContextRef pdfContext = CGPDFContextCreateWithURL(pdfURL, NULL, NULL);<\/p>\n<p>\/\/\u5f00\u59cb\u7ed8\u5236PDF\u5185\u5bb9<\/p>\n<p>CGPDFContextBeginPage(pdfContext, NULL);<\/p>\n<p>\/\/\u7ed8\u5236\u6587\u672c<\/p>\n<p>CGContextSelectFont(pdfContext, &#8220;Helvetica&#8221;, 20, kCGEncodingMacRoman);<\/p>\n<p>CGContextSetTextDrawingMode(pdfContext, kCGTextFill);<\/p>\n<p>CGContextSetRGBFillColor(pdfContext, 0, 0, 0, 1);<\/p>\n<p>const char *text = &#8220;Hello, World!&#8221;;<\/p>\n<p>CGContextShowTextAtPoint(pdfContext, 50, 50, text, strlen(text));<\/p>\n<p>CGPDFContextEndPage(pdfContext);<\/p>\n<p>\/\/\u91ca\u653ePDF\u6587\u6863\u4e0a\u4e0b\u6587<\/p>\n<p>CGPDFContextClose(pdfContext);<\/p>\n<p>CFRelease(pdfContext);<\/p>\n<p>&#8220;`<\/p>\n<p>3. \u97f3\u9891\u6587\u4ef6\u751f\u6210<\/p>\n<p>\u5728iOS\u8bbe\u5907\u4e0a\uff0c\u53ef\u4ee5\u4f7f\u7528AVFoundation\u6846\u67b6\u4e2d\u7684AVAssetWriter\u548cAVAssetWriterInput\u7c7b\u6765\u751f\u6210\u97f3\u9891\u6587\u4ef6\u3002\u5177\u4f53\u5b9e\u73b0\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p>&#8220;`<\/p>\n<p>\/\/\u521b\u5efa\u97f3\u9891\u6587\u4ef6\u8f93\u51fa\u8def\u5f84<\/p>\n<p>NSString *audioPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject stringByAppendingPathComponent:@&#8221;example.caf&#8221;];<\/p>\n<p>NSURL *audioURL = [NSURL fileURLWithPath:audioPath];<\/p>\n<p>\/\/\u521b\u5efa\u97f3\u9891\u8f93\u5165\u6570\u636e\u683c\u5f0f<\/p>\n<p>NSDictionary *audioSettings = @{AVFormatIDKey: @(kAudioFormatAppleIMA4),<\/p>\n<p>                                AVSampleRateKey: @(44100.0),<\/p>\n<p>                                AVNumberOfChannelsKey: @(1)};<\/p>\n<p>\/\/\u521b\u5efa\u97f3\u9891\u6587\u4ef6\u8f93\u51fa<\/p>\n<p>NSError *error;<\/p>\n<p>AVAssetWriter *audioWriter = [[AVAssetWriter alloc] initWithURL:audioURL fileType:AVFileTypeCoreAudioFormat error:&amp;error];<\/p>\n<p>if (error) {<\/p>\n<p>    NSLog(@&#8221;\u97f3\u9891\u6587\u4ef6\u8f93\u51fa\u9519\u8bef\uff1a%@&#8221;, error.localizedDescription);<\/p>\n<p>    return;<\/p>\n<p>}<\/p>\n<p>\/\/\u521b\u5efa\u97f3\u9891\u6587\u4ef6\u8f93\u5165<\/p>\n<p>AVAssetWriterInput *audioInput = [[AVAssetWriterInput alloc] initWithMediaType:AVMediaTypeAudio outputSettings:audioSettings];<\/p>\n<p>audioInput.expectsMediaDataInRealTime = YES;<\/p>\n<p>[audioWriter addInput:audioInput];<\/p>\n<p>\/\/\u5f00\u59cb\u5199\u5165\u97f3\u9891\u6570\u636e<\/p>\n<p>[audioWriter startWriting];<\/p>\n<p>[audioWriter startSessionAtSourceTime:kCMTimeZero];<\/p>\n<p>for (int i = 0; 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