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

提新车要注意哪些方面的问题 2021年8月哪天提新车好

和婆婆相处的原则有什么为什么和婆婆处不好

Kotlin|Kotlin 基本语法

加湿器出来的雾气对人体有害吗

大金家用空调显示U4故障排除图解,这里有详细步骤

Spark学习记录之SparkCore核心属性

QQ安装流程分析用例,qq安装流程图用例

在农村有什么半加工的生意吗？

淘宝双十一战队怎么集淘气值 2017双11战队集淘气值收集攻略

最近大盘为什么下跌大盘为什么一直跌

如何将Python文件转换为可执行文件（快速实现教程）

比瑞吉猫粮好不好？猫咪不爱吃猫粮怎么办？

百灵鸟和她的孩子们的故事告诉我们什么道理

2023宁波慈溪免费求职公交专线运营时间+路线安排

两主线火热造势！新热点一触即发！

PowerPoint2007中艺术字的使用方法介绍

餐饮营销方案怎么写餐饮营销方案100例

原因分析树图,不同痘痘的原因分析图

属狗女孩简单快乐智慧名字大全2020 女孩名字大全2020属狗

饿了么服务器故障了怎么处理？饿了么服务器出错了怎么办