UIImageView加载网络图片，NSOperationQuene异步加载图片

来源：互联网发布：unity3d 衣服模型编辑：程序博客网时间：2024/05/16 17:36

#import "newDetailViewController.h"
#import "Common.h"
#import "newObject.h"
#import "NetRequest.h"
#import <UIKit/UIKitDefines.h>
@interface newDetailViewController ()<UIWebViewDelegate>
{
UILabel *GWDetailTitleText;
UILabel *GWDetailTitleText1;
UITextView *GWDetailContentText;
UIImageView *imageview;
NSURL *url;
UIView *opaqueview;
UIActivityIndicatorView *activityIndicator;
}
@end
@implementation newDetailViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {
self.view.bounds = CGRectMake(0, -20, self.view.frame.size.width, self.view.frame.size.height );
}
}
return self;
}
- (void)viewDidLoad
{
[UIApplication sharedApplication].statusBarHidden = YES;
[super viewDidLoad];
//[self initView];
}
-(void)initView
{
UIButton *loginButton = [[UIButton alloc]initWithFrame:CGRectMake(SCREEN_WIDTH - 40, 0, 40, 30)];
[loginButton setTitle:@"返回" forState:UIControlStateNormal];
loginButton.titleLabel.textColor =[UIColor blackColor];
[loginButton addTarget:self action:@selector(backtofather) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:loginButton];
GWDetailTitleText = [[UILabel alloc]initWithFrame:CGRectMake(10, 30, SCREEN_WIDTH - 20, 40)];
GWDetailTitleText.textAlignment = NSTextAlignmentCenter;
GWDetailTitleText.numberOfLines = 0;
GWDetailTitleText.lineBreakMode = UILineBreakModeCharacterWrap;
[self.view addSubview:GWDetailTitleText];
GWDetailTitleText1 = [[UILabel alloc]initWithFrame:CGRectMake(10, 70, SCREEN_WIDTH - 20, 20)];
GWDetailTitleText1.textAlignment = NSTextAlignmentLeft;
[self.view addSubview:GWDetailTitleText1];
web = [[UIWebView alloc]initWithFrame:CGRectMake(10, 100, SCREEN_WIDTH - 20, self.view.bounds.origin.y + self.view.bounds.size.height - 110)];
web.scalesPageToFit = YES;
web.delegate = self;
[[web layer] setCornerRadius:10];
[web setClipsToBounds:YES];
web.scalesPageToFit = NO;
for (id subview in web.subviews)
{
if ([[subview class] isSubclassOfClass: [UIScrollView class]])
{
((UIScrollView *)subview).bounces = NO;
}
}
web.backgroundColor = [UIColor whiteColor];
[self.view addSubview:web];
// GWDetailContentText = [[UITextView alloc]initWithFrame:CGRectMake(10, 100, SCREEN_WIDTH - 20, self.view.bounds.origin.y + self.view.bounds.size.height - 110)];
// GWDetailContentText.layer.borderWidth = 1;
// GWDetailContentText.editable = NO;
// [self.view addSubview:GWDetailContentText];
}
-(void)setchoicedDate:(newObject *)myarray
{
[self initView];
MyLog(@"%@ ", myarray );
//MyLog(@"%@", myarray[0]);//[@"rel_title"]
GWDetailTitleText.text = myarray.rel_title;
NSString *date =[[NSString alloc]initWithString:myarray.rel_date];
date = [date substringToIndex:10];
NSString *mystring = [NSString stringWithFormat:@"发布人:%@ 日期:%@",myarray.rel_user,date];
GWDetailTitleText1.text = mystring;
MyLog(@"%@",myarray.rel_picpath);
if (![myarray.rel_picpath isEqualToString:@"null"]) {
url = [NSURL URLWithString:[NSString stringWithFormat:@"%@%@",@"http://www.xf0573.com",myarray.rel_picpath]];
imageview = [[UIImageView alloc]initWithFrame:CGRectMake(80, 0, 160, 120)];
imageview.layer.masksToBounds = YES;
imageview.layer.cornerRadius = 5.0f;
[imageview setBackgroundColor:[UIColor grayColor]];
imageview.image = [UIImage imageNamed:@"moren.png"];
[web addSubview:imageview];
opaqueview = [[ UIView alloc] initWithFrame: CGRectMake(0, 0, 160, 120)];
activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame: CGRectMake( 0, 0, 160, 120)];
[ opaqueview setBackgroundColor:[UIColor blackColor]];
[ opaqueview setAlpha:0.6 ];
[ imageview addSubview: opaqueview];
[ opaqueview addSubview: activityIndicator];
[ activityIndicator startAnimating ];
opaqueview.hidden = NO ;
web1 = [[UIWebView alloc]initWithFrame:CGRectMake(10, 120, SCREEN_WIDTH - 20, self.view.bounds.origin.y + self.view.bounds.size.height - web.frame.origin.y - 130)];
web1.scalesPageToFit = YES;
web1.delegate = self;
[[web1 layer] setCornerRadius:10];
[web1 setClipsToBounds:YES];
web1.scalesPageToFit = NO;
for (id subview in web1.subviews)
{
if ([[subview class] isSubclassOfClass: [UIScrollView class]])
{
((UIScrollView *)subview).bounces = NO;
}
}
web1.backgroundColor = [UIColor whiteColor];
[web1 loadHTMLString:myarray.rel_content baseURL:nil];
[web addSubview:web1];
NSOperationQueue *operationQueue = [[NSOperationQueue alloc] init];
NSInvocationOperation *op = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(downloadImage) object:nil];
[operationQueue addOperation:op];
//[web loadRequest:req];
}else if ([myarray.rel_picpath isEqualToString:@"null"])
{
[web loadHTMLString:myarray.rel_content baseURL:nil];
//GWDetailContentText.text = myarray.rel_content;
}
}
- (void)downloadImage
{
UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:url]];
imageview.image = image;
[activityIndicator stopAnimating];
opaqueview.hidden = YES ;
}
-(void)backtofather
{
[self dismissModalViewControllerAnimated:YES];
}
@end

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