我正在尝试为我的应用程序创建一个欢迎页面(带有屏幕截图)。
我已经取了一些样本并将其制作成文字卷轴。我已经尝试了数周但没有成功。谢谢
int numberOfPages = 5;
UIScrollView *someScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 400)];
someScrollView.pagingEnabled = YES;
someScrollView.contentSize = CGSizeMake(numberOfPages * someScrollView.frame.size.width, someScrollView.frame.size.height);
[self.view addSubview:someScrollView];
for (int i = 0; i < numberOfPages; i++) {
UILabel *tmpLabel = [[UILabel alloc] initWithFrame:CGRectMake(i * someScrollView.frame.size.width + 20,
20,
someScrollView.frame.size.width - 40,
20)];
tmpLabel.textAlignment = UITextAlignmentCenter;
tmpLabel.text = [NSString stringWithFormat:@"THIS ACTUALLY WORKS!! %d", i];
[someScrollView addSubview:tmpLabel];
}
这是我对图像的失败尝试:
int numberOfPages = 5;
UIScrollView *someScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 400)];
someScrollView.pagingEnabled = YES;
someScrollView.contentSize = CGSizeMake(numberOfPages * someScrollView.frame.size.width, someScrollView.frame.size.height);
[self.view addSubview:someScrollView];
for (int i = 0; i < numberOfPages; i++) {
UIImageView *tmpLabel = [[UIImageView alloc] initWithFrame:CGRectMake(i * someScrollView.frame.size.width + 20,
20,
someScrollView.frame.size.width - 40,
20)];
tmpLabel.imageAlignment = UIImageAlignmentCenter;
tmpLabel.text = [NSString stringWithFormat:@"THIS ACTUALLY WORKS!! %d", i];
[someScrollView addSubview:tmpLabel];
}
UIImageView *imageView1 = [[UIImageView alloc]initWithFrame:subview1.frame];
if (i == 0) {
imageView1.image = [UIImage imageNamed:@"openingScreen1.png"];
}else if (i == 1){
imageView1.image = [UIImage imageNamed:@"openingScreen2.png"];
}else if (i == 2){
imageView1.image = [UIImage imageNamed:@"openingScreen3.png"];
}else {
imageView1.image = [UIImage imageNamed:@"openingScreen4.png"];
}
我可能还需要删除“Parse”这个词,除非上面的图片位于它上面?我找不到这个词。
最佳答案
试试这个
UIScrollView *someScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0,
self.view.frame.size.width,
self.view.frame.size.height)];
someScrollView.pagingEnabled = YES;
[someScrollView setAlwaysBounceVertical:NO];
//setup internal views
NSInteger numberOfPages = 5;
for (int i = 0; i < numberOfPages; i++)
{
CGFloat xOrigin = i * self.view.frame.size.width+10;
UILabel *tmpLabel = [[UILabel alloc] initWithFrame:CGRectMake(xOrigin,70,self.view.frame.size.width,25)];
tmpLabel.textAlignment = NSTextAlignmentCenter;
tmpLabel.text = [NSString stringWithFormat:@"THIS ACTUALLY WORKS!! %d", i+1];
[someScrollView addSubview:tmpLabel];
// calculate the width
UIImageView *image = [[UIImageView alloc] initWithFrame:
CGRectMake(xOrigin, tmpLabel.frame.size.height + tmpLabel.frame.origin.y + 10,
self.view.frame.size.width,
self.view.frame.size.height)]; // customize your width, height and y co ordinates
image.image = [UIImage imageNamed:[NSString stringWithFormat:
@"openingScreen%d.jpg", i+1]];
image.contentMode = UIViewContentModeScaleAspectFit;
[someScrollView addSubview:image];
}
//set the scroll view content size
someScrollView.backgroundColor = [UIColor blueColor];
someScrollView.contentSize = CGSizeMake(self.view.frame.size.width *
numberOfPages,
self.view.frame.size.height);
//add the scrollview to this view
[self.view addSubview:someScrollView];
样本输出是
我在这里附上了 sample Project另外,请使用这个
关于ios - 用于图像 Objective C (iOS) 的 ScrollView ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32883548/