Question

我搜索了一些教程，将UIImage添加到点击事件按钮。如何添加网址路径

图像到按钮。例如代码：

UIButton *imageView=[[UIButton alloc]initWithFrame:CGRectMake((320*index)+countFlag*80+ 2, 5, 75, 75)];
                imageView.tag=i+1;
                [imageView addTarget:self action:@selector(imageViewClicked:) forControlEvents:UIControlEventTouchUpInside];
                [imageView.layer setBorderColor:[UIColor lightGrayColor].CGColor];
                [imageView.layer setBorderWidth:1.0f];
                switch ((i+1)%5) {
                    case 0:
                        [imageView setImage:[UIImage imageNamed:@"img1.png"] forState:UIControlStateNormal];               

                        break;

                    case 1:
                        [imageView setImage:[UIImage imageNamed:@"img2.png"]  forState:UIControlStateNormal];

                        break;
    }

Answer 1

最好使用此UIButton+WebCache.h类SDWebImage它支持异步加载按钮的图像。您可以使用以下任何一种方法。

- (void)setImageWithURL:(NSURL *)url forState:(UIControlState)state;
- (void)setImageWithURL:(NSURL *)url forState:(UIControlState)state placeholderImage:(UIImage *)placeholder;

它还为UIButton

提供背景图像异步加载

- (void)setBackgroundImageWithURL:(NSURL *)url forState:(UIControlState)state;
- (void)setBackgroundImageWithURL:(NSURL *)url forState:(UIControlState)state placeholderImage:(UIImage *)placeholder;

不要忘记将SDWebImage包含在您的项目中，将UIButton+WebCache.h文件包含在您的实施文件中。

参考：https://github.com/rs/SDWebImage

Answer 2

尝试使用此按钮（imageView）

[imageView setImage:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"imageurl"]]]forState:UIControlStateNormal];

Answer 3

对于正常状态，

[imageView setImage:[UIImage imageNamed:@"img1.png"] forState:UIControlStateNormal];

和Clicked（Selected）状态，

[imageView setImage:[UIImage imageNamed:@"img2.png"] forState:UIControlStateSelected];

希望这会有所帮助。

Answer 4

NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"url"];
[imageView setImage:[UIImage imageWithData:data]];

Answer 5

试试这个：

    EGOImageButton* btnUserImage = [[EGOImageButton alloc] initWithPlaceholderImage:[UIImage imageNamed:@"ProfilePictureDefault.png"]];
    btnUserImage.frame = CGRectMake(10,5,25,25);
    btnUserImage.highlighted = NO;
    [self addSubview:btnUserImage];

    btnUserImage.imageURL = [NSURL URLWithString:Url];

添加URL图像到按钮单击

5 个答案: