Iphone 旋转的UIPicker显示标签低分辨率?
我一直在研究一个水平的UIPicker,我终于让picker和picker上的标签都显示旋转。但是,我现在注意到的问题是,标签以低分辨率显示,具有非常明显的像素化。使用字体值似乎对像素化没有影响。我已经包括了我的代码: //鉴于你没有加载Iphone 旋转的UIPicker显示标签低分辨率?,iphone,xcode,ios4,ios,uipickerview,Iphone,Xcode,Ios4,Ios,Uipickerview,我一直在研究一个水平的UIPicker,我终于让picker和picker上的标签都显示旋转。但是,我现在注意到的问题是,标签以低分辨率显示,具有非常明显的像素化。使用字体值似乎对像素化没有影响。我已经包括了我的代码: //鉴于你没有加载 [super viewDidLoad]; myPicker.delegate = self; myPicker.dataSource = self; myPicker.showsSelectionIndicator =YES;
[super viewDidLoad];
myPicker.delegate = self;
myPicker.dataSource = self;
myPicker.showsSelectionIndicator =YES;
myPicker.backgroundColor = [UIColor blackColor];
CGAffineTransform rotate = CGAffineTransformMakeRotation(3.14/2);
//original settings
//rotate = CGAffineTransformScale(rotate, 0.1, 0.8);
rotate = CGAffineTransformScale(rotate, 0.2, 1.65);
[self.myPicker setTransform:rotate];
NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:@"155", @"165", @"175",
@"185", @"195", @"205", @"215", nil];
self.pickerData = array;
[array release];
NSInteger TOTALITEM = [pickerData count];
UILabel *theview[TOTALITEM-1]; // + 1 for the nil
for (int i=1;i<=TOTALITEM-1;i++) {
theview[i] = [[UILabel alloc] init];
theview[i].text = [NSString stringWithFormat:@"%d",i];
theview[i].textColor = [UIColor blackColor];
theview[i].frame = CGRectMake(0,0, 25, 25);
theview[i].backgroundColor = [UIColor clearColor];
theview[i].textAlignment = UITextAlignmentCenter;
theview[i].shadowColor = [UIColor whiteColor];
theview[i].shadowOffset = CGSizeMake(-1,-1);
theview[i].adjustsFontSizeToFitWidth = NO;
UIFont *myFont = [UIFont fontWithName:@"Helvetica" size:10];
[theview[i] setFont:myFont];
}
CGAffineTransform rotateItem = CGAffineTransformMakeRotation(-3.14/2);
rotateItem = CGAffineTransformScale(rotateItem, 1, 10);
for (int j=1;j<=TOTALITEM-1;j++) {
theview[j].transform = rotateItem;
}
pickerData = [[NSMutableArray alloc] init];
for (int j=1;j<=TOTALITEM-1;j++) {
[pickerData addObject:theview[j]];
}
[super viewDidLoad];
myPicker.delegate=self;
myPicker.dataSource=self;
myPicker.showsSelectIndicator=是;
myPicker.backgroundColor=[UIColor blackColor];
CGAffineTransform rotate=CGAffineTransformMakeRotation(3.14/2);
//原始设置
//旋转=CGAffineTransformScale(旋转,0.1,0.8);
旋转=CGAffineTransformScale(旋转,0.2,1.65);
[self.myPicker setTransform:rotate];
NSMUTABLEARRY*array=[[NSMUTABLEARRY alloc]initWithObjects:@“155”、“165”、“175”,
@"185,"195,"205,"215,无";;
self.pickerData=数组;
[阵列释放];
NSInteger TOTALITEM=[pickerData count];
UILabel*视图[TOTALITEM-1];//+一比零
对于(int i=1;i我发现了这个问题,所以我想我会在这里发布答案。现在很明显。我在文本上使用了与UIPicker相同的缩放变换设置。为了解决这个问题,我将文本上的变换减少了50%,并使用字体大小来控制标签的大小。下面是我更改的代码:
原件:
UIFont *myFont = [UIFont fontWithName:@"Helvetica" size:10];
[theview[i] setFont:myFont];
}
CGAffineTransform rotateItem = CGAffineTransformMakeRotation(-3.14/2);
rotateItem = CGAffineTransformScale(rotateItem, 1, 10);
固定的:
UIFont *myFont = [UIFont fontWithName:@"Helvetica" size:30];
[theview[i] setFont:myFont];
}
CGAffineTransform rotateItem = CGAffineTransformMakeRotation(-3.14/2);
rotateItem = CGAffineTransformScale(rotateItem, .5, 5);