创建UITableViewCell

Question

//ConentCell.h
#import <UIKit/UIKit.h>@interface ConentCell : UITableViewCell<NSURLConnectionDataDelegate>
{
    long long allLength,currentLength;
    NSMutableData * allData;
    UIProgressView * progress;
}//ConentCell.m
#import "ConentCell.h"
#import <AVFoundation/AVFoundation.h>@implementation ConentCell
static int a=0;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        // Initialization code
        NSArray * arr=[NSArray arrayWithObjects:@"http://zhangmenshiting.baidu.com/data2/music/7306551/7302495140400128.mp3?xcode=c0880abde3bf0952b5949db22586f5d7",@"http://music.baidu.com/data/music/file?link=http://zhangmenshiting.baidu.com/data2/music/20882281/20882278165600128.mp3?xcode=c44299c26a33d9ac553396c56deab3f1",@"http://music.baidu.com/data/music/file?link=http://zhangmenshiting.baidu.com/data2/music/23977117/2398208714040096.mp3?xcode=770acb99a10bb36756a00a6b01fdecfe", nil];
        NSURL * url=[NSURL URLWithString:arr[a]];
        a++;
        //创建请求
        NSURLRequest * request=[[NSURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:120];
        //发送请求
        [NSURLConnection connectionWithRequest:request delegate:self];
        self.imageView.image=[UIImage imageNamed:@"icon57.png"];
        progress=[[UIProgressView alloc] initWithFrame:CGRectMake(100, 80, 150, 50)];
        [self addSubview:progress];
        //[progress release];
    }
    return self;
}
-(void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    NSLog(@"接收请求，开始下载");
    allLength=[response expectedContentLength];
    currentLength=0;
    if(allData)
    {
        [allData release];
    }
    NSLog(@"本音乐大小为：%lld",allLength);
    allData=[[NSMutableData alloc] init];
}
-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    //long long length;
    currentLength+=data.length;
    NSLog(@"当前下载了：%lld",currentLength);
    long long temp = currentLength *100;
    temp = temp/allLength;//计算出百分比
    progress.progress=temp/100;
    NSLog(@"下载百分比为:%lld%@",temp,@"%");
    [allData appendData:data];
}
-(void) connectionDidFinishLoading:(NSURLConnection *)connection
{
    AVAudioPlayer * player=[[AVAudioPlayer alloc] initWithData:allData error:nil];
    player.volume=1;
    [player play];
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
    [super setSelected:selected animated:animated];
    
    // Configure the view for the selected state
}为什么输出加载的进度是100%没有过程了，也不会播放

Answer 1

你直接把progress.progress=temp/100;的。。当然没过程，想要过程就自己弄个定时器，然后方法里progress.progress的值一点点的加，一直加到temp/100...