NSData转换成其他类型对象 NSData转换成其他类型对象

1，NSData 与 NSString

NSData --> NSString
NSString *aString = [[NSString alloc] initWithData:adata encoding:NSUTF8StringEncoding];
NSString --> NSData
NSString *aString = @"1234";
NSData *aData = https://www.it610.com/article/[aString dataUsingEncoding: NSUTF8StringEncoding];
2，NSData 与 Byte
NSData --> Byte
NSString *testString = @"1234567890";
NSData *testData = https://www.it610.com/article/[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 = https://www.it610.com/article/[[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
【NSData转换成其他类型对象】NSString *path = [[NSBundle mainBundle] bundlePath];
NSString *name = [NSString stringWithFormat:@"ceshi.png"];
NSString *finalPath = [path stringByAppendingPathComponent:name];
NSData *imageData = https://www.it610.com/article/[NSData dataWithContentsOfFile: finalPath];
UIImage *aimage = [UIImage imageWithData: imageData];
UIImage－> NSData
NSData *imageData = https://www.it610.com/article/UIImagePNGRepresentation(aimae);
4，NSData 与 NSMutableData
NSData --> MSMutableData
NSData *data=https://www.it610.com/article/[[NSData alloc]init];
NSMutableData *mdata=https://www.it610.com/article/[[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 = https://www.it610.com/article/[[NSData alloc] initWithContentsOfFile: mp3Path1];
NSData *sound2Data = https://www.it610.com/article/[[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;
}

NSData转换成其他类型对象

推荐阅读

蓦字五行属什么蓦字读音及解释

企业qq怎么登录邮箱企业QQ邮箱登录的方法教程

手工皂长出菌斑怎么回事手工皂出现白斑

如何结束mysql命令行，mysql怎么终止命令

中国邮政在线客服邮政客服电话人工服务，中国邮政快递法规

元气骑士iOS破解版全无限下载，求元气骑士iOS无限宝石破解版不要越狱的最好带教程

一篇文章带你入门Java数据结构

原神各个角色升级材料《原神》3.4瑶瑶升级材料介绍

染头发为什么会爆顶

电视机通电后无任何反应什么原因,各个方面来对比下

2019一级演员名单国家一级演员的全部名单

测量机油的正确方法测量机油的正确方法视频教程

宋智孝结婚了吗宋智孝男朋友

贵妃芒怎么样才是熟了

蕨菜什么时候采摘

为什么有人说“当年流氓真君子,今日君子真流氓”呢？

黄瓜菌核病如何防治效果好黄瓜病毒病怎样防治

初次使用初忆云服务器的感受如何？初忆云服务器怎么样

咖啡蛋糕的做法很需要啊

六神装是什么