下面是内存溢出 jb51.cc 通过网络收集整理的代码片段。
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1,NSData 与 Nsstring NSData --> Nsstring Nsstring *aString = [[Nsstring alloc] initWithData:adata enCoding:NSUTF8StringEnCoding]; Nsstring --> NSData Nsstring *aString = @"1234"; NSData *aData = [aString dataUsingEnCoding: NSUTF8StringEnCoding]; iOS Nsstring 和NSData 转换 Nsstring 转换成NSData 对象 NSData* xmlData = [@"testdata" dataUsingEnCoding:NSUTF8StringEnCoding]; NSData 转换成Nsstring对象 NSData * data; Nsstring *result = [[Nsstring alloc] initWithData:data enCoding:NSUTF8StringEnCoding];2,NSData 与 Byte NSData --> Byte Nsstring *testString = @"1234567890"; NSData *testData = [testString dataUsingEnCoding: NSUTF8StringEnCoding]; Byte *testByte = (Byte *)[testData bytes]; Byte --> NSData Byte byte[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23}; NSData *adata = [[NSData alloc] initWithBytes:byte length:24];3,NSData 与 UIImage NSData --> UIImage UIImage *aimage = [UIImage imageWithData: imageData]; //例:从本地文件沙盒中取图片并转换为NSData Nsstring *path = [[NSBundle mainBundle] bundlePath]; Nsstring *name = [Nsstring stringWithFormat:@"ceshi.png"]; Nsstring *finalPath = [path stringByAppendingPathComponent:name]; NSData *imageData = [NSData dataWithContentsOffile: finalPath]; UIImage *aimage = [UIImage imageWithData: imageData]; UIImage-> NSData NSData *imageData = UIImagePNGRepresentation(aimae);4,NSData 与 NSMutableData NSData --> MSMutableData NSData *data=[[NSData alloc]init]; NSMutableData *mdata=[[NSMutableData alloc]init]; mdata=[NSData dataWithData:data];5,NSData合并为一个NSMutableData- (Nsstring *)filePathWithname:(Nsstring *)filename { NSArray *paths = NSSearchPathForDirectorIEsInDomains(NSdocumentDirectory,NSUserDomainMask,YES); Nsstring *documentsDirectory = [paths objectAtIndex:0]; return [documentsDirectory stringByAppendingPathComponent:filename]; } - (BOol)application:(UIApplication *)application dIDFinishLaunchingWithOptions:(NSDictionary *)launchOptions { //音频文件路径 Nsstring *mp3Path1 = [[NSBundle mainBundle] pathForResource:@"1" ofType:@"mp3"]; Nsstring *mp3Path2 = [[NSBundle mainBundle] pathForResource:@"2" ofType:@"mp3"]; //音频数据 NSData *sound1Data = [[NSData alloc] initWithContentsOffile: mp3Path1]; NSData *sound2Data = [[NSData alloc] initWithContentsOffile: mp3Path2]; //合并音频 NSMutableData *sounds = [NSMutableData alloc]; [sounds appendData:sound1Data]; [sounds appendData:sound2Data]; //保存音频 NSLog(@"data length:%d",[sounds length]); [sounds writetofile:[self filePathWithname:@"tmp.mp3"] atomically:YES]; [window makeKeyAndVisible]; return YES; }
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总结以上是内存溢出为你收集整理的iOS数据类型转换 NSData转NSString,Byte,UIImage全部内容,希望文章能够帮你解决iOS数据类型转换 NSData转NSString,Byte,UIImage所遇到的程序开发问题。
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