我想更改 TextView 中的光标位置...
// NoteView 目标 _c 类，它的超类是 TextView...
#import "NoteView.h"
@implementation NoteView
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
self.backgroundColor =[UIColor whiteColor];
self.contentMode = UIViewContentModeRedraw;
self.font = [UIFont fontWithName:@"Helvetica Neue" size:14];
}
return self;
}
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
//Get the current drawing context
CGContextRef context = UIGraphicsGetCurrentContext();
//Set the line color and width
// CGContextSetStrokeColorWithColor(context, [UIColor colorWithRed:0.0f green:0.0f blue:0.0f alpha:0.2f].CGColor);
CGContextSetStrokeColorWithColor(context,[UIColor colorWithRed:0.29804f green:0.12157f blue:0.9f alpha:0.1].CGColor);
//Start a new Path
CGContextBeginPath(context);
//Find the number of lines in our textView + add a bit more height to draw lines in the empty part of the view
NSUInteger numberOfLines = (self.contentSize.height + self.bounds.size.height) / self.font.leading;
//Set the line offset from the baseline. (I'm sure there's a concrete way to calculate this.)
CGFloat baselineOffset = 6.0f;
//iterate over numberOfLines and draw each line
for (int x = 0; x < numberOfLines; x++) {
//0.5f offset lines up line with pixel boundary
CGContextMoveToPoint(context, self.bounds.origin.x, self.font.leading*x + 0.5f + baselineOffset);
CGContextAddLineToPoint(context, self.bounds.size.width, self.font.leading*x + 0.5f + baselineOffset);
}
//Close our Path and Stroke (draw) it
CGContextClosePath(context);
CGContextStrokePath(context);
}
//its a view controller class and here i imported NotesView here
#import "NotesViewController.h"
@interface NotesViewController ()
@end
@implementation NotesViewController
// i load the textView frame whatever i created class above
- (void)loadView {
[super loadView];
CGSize result = [[UIScreen mainScreen] bounds].size;
CGFloat scale = [UIScreen mainScreen].scale;
result = CGSizeMake(result.width*scale, result.height * scale);
if (result.height==1136)
{
_TextView = [[NoteView alloc] initWithFrame:CGRectMake(29,50,266,430)];
backgroundView.frame=CGRectMake(10,32,300,450);
}
else
{
_TextView = [[NoteView alloc] initWithFrame:CGRectMake(29,50,266,340)];
backgroundView.frame=CGRectMake(10,32,300,360);
}
[self.view addSubview:_TextView];
_TextView.delegate = self;
UIView *lineView = [[UIView alloc]initWithFrame:CGRectMake(30,40,1,backgroundView.frame.size.height-5)];
lineView.backgroundColor = [UIColor brownColor];
lineView.alpha=0.3;
[self.view addSubview:lineView];
UIView *lineView1 = [[UIView alloc]initWithFrame:CGRectMake(32,40,1,backgroundView.frame.size.height-5)];
lineView1.backgroundColor = [UIColor brownColor];
lineView1.alpha=0.3;
[self.view addSubview:lineView1];
}
}
}
// in view did load i set the delegate and code for cursor position
- (void)viewDidLoad
{
[super viewDidLoad];
// setting delegate here
_TextView.delegate=self;
_TextView.editable = YES;
[_TextView setSelectedRange:NSMakeRange(10, 0)];
}
我为Textview的Textview和ScrollView编写了所有委托方法我光标位置是在垂直线之后开始的......我表达得不好请根据图像理解......我想要光标位置......我想要在 iPhone 中使用真正的笔记应用程序设置我的 Textview .. 我将 Textview 添加到 ViewController 一切正常，但光标统计起始位置...我想光标位置始终为水平线........尝试根据图片..
