[iOS 多线程 & 网络

A.ASI的上传功能基本使用

1.实现步骤

（1）创建请求

使用ASIFormDataRequest

（2）设置上传文件路径

（3）发送请求

 

 

2.上传相册相片

UIImagePickerController用来选择图片

设置图片来源，可以选择相册

使用代理 UIImagePickerControllerDelegate方法，选择完成之后取得相片

 

//
//  ViewController.m
//  ASIUploadDemo
//
//  Created by hellovoidworld on 15/1/28.
//  Copyright (c) 2015年 hellovoidworld. All rights reserved.
//

#import "ViewController.h"
#import "ASIFormDataRequest.h"

@interface ViewController () <ASIProgressDelegate, UINavigationControllerDelegate,UIImagePickerControllerDelegate>

@property (weak, nonatomic) IBOutlet UIProgressView *progressView;

@property(nonatomic, strong) ASIFormDataRequest *request;

- (IBAction)startUploading;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
   
    // 显示网络请求状态
    [ASIHTTPRequest setShouldThrottleBandwidthForWWAN:YES];
}

/** 回收 */
- (void)dealloc {
    [self.request clearDelegatesAndCancel];
   
//    self.request = nil;
}

#pragma mark - 上传方法
- (IBAction)startUploading {
//    [self upload];
//    [self upload2];
   
    [self uploadImageFromAlbum];
}

#pragma mark - 上传文件

/** 上传方法1 */
- (void) upload {
    // 1.创建请求
    NSURL *url = [NSURL URLWithString:@"http://192.168.0.21:8080/MyTestServer/upload"];
    self.request = [ASIFormDataRequest requestWithURL:url];
   
    // 2.设置上传文件
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"bird.jpg" ofType:nil];
    [self.request setFile:filePath forKey:@"uploadedFile"];
   
    // 3.设置其他参数
    [self.request setPostValue:@"tom" forKey:@"user"];

    // 进度条
    self.request.uploadProgressDelegate = self.progressView;
   
    // 程序进入后台，仍然继续发送请求，适合发送大文件时使用
    self.request.shouldContinueWhenAppEntersBackground = YES;
   
    // 4.发送请求
    [self.request startAsynchronous];
   
    // 5.监听请求
    self.request.completionBlock = ^{
        NSLog(@"上传完成!");
    };
}


/** 上传方法2，从新设置上传文件名和类型 */
- (void) upload2 {
    // 1.创建请求
    NSURL *url = [NSURL URLWithString:@"http://192.168.0.21:8080/MyTestServer/upload"];
    self.request = [ASIFormDataRequest requestWithURL:url];
   
    // 2.设置上传文件
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"bird.jpg" ofType:nil];
    // 从新设置上传文件名和类型
    [self.request setFile:filePath withFileName:@"my_file.jpg" andContentType:@"image/jpg" forKey:@"uploadedFile"];
   
    // 3.设置其他参数
    [self.request setPostValue:@"tom" forKey:@"user"];
   
    // 进度条
    self.request.uploadProgressDelegate = self.progressView;
   
    // 程序进入后台，仍然继续发送请求，适合发送大文件时使用
    self.request.shouldContinueWhenAppEntersBackground = YES;
   
    // 4.发送请求
    [self.request startAsynchronous];
   
    // 5.监听请求
    self.request.completionBlock = ^{
        NSLog(@"上传完成!");
    };
}

#pragma mark - 从相册/相机选择照片上传
- (void) uploadImageFromAlbum {
    // 创建一个相片选择控制器
    UIImagePickerController *imagePC = [[UIImagePickerController alloc] init];
   
    // 设置来源
//    [imagePC setSourceType:UIImagePickerControllerSourceTypeCamera]; // 相机
    [imagePC setSourceType:UIImagePickerControllerSourceTypePhotoLibrary]; // 相簿
   
    // 设置代理
    imagePC.delegate = self;
   
    // 弹出相片控制器
    [self presentViewController:imagePC animated:YES completion:^{
        NSLog(@"开始选择相片");
    }];
}

- (void) uploadImage:(UIImage *) image {
    // 1.创建请求
    NSURL *url = [NSURL URLWithString:@"http://192.168.0.21:8080/MyTestServer/upload"];
    self.request = [ASIFormDataRequest requestWithURL:url];
   
    // 2.将上传图片转换成二进制数据
    NSData *imageData = UIImagePNGRepresentation(image);
   
    // 从新设置上传文件名和类型
    [self.request setData:imageData withFileName:@"my_photo.png" andContentType:@"iamge/png" forKey:@"uploadedFile"];
   
    // 3.设置其他参数
    [self.request setPostValue:@"tom" forKey:@"user"];
   
    // 进度条
    self.request.uploadProgressDelegate = self.progressView;
   
    // 程序进入后台，仍然继续发送请求，适合发送大文件时使用
    self.request.shouldContinueWhenAppEntersBackground = YES;
   
    // 4.发送请求
    [self.request startAsynchronous];
   
    // 5.监听请求
    self.request.completionBlock = ^{
        NSLog(@"上传完成!");
    };
}

#pragma mark - UIImagePickerControllerDelegate
/** 完成选择照片代理方法 */
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
   
    // 退出相片选择控制器
    [picker dismissViewControllerAnimated:YES completion:^{
        NSLog(@"已经选择相片，准备上传");
    }];
   
    // 得到上传图片
    UIImage *image = info[UIImagePickerControllerOriginalImage];
   
    // 上传图片
    [self uploadImage:image];
}

@end