//

//  ViewController.m

//  一行显示可滚动的文本

//

//  Created by apple on 15-5-8.

//  Copyright (c) 2015年 apple. All rights reserved.

//

#import "ViewController.h"

@interface ViewController () {

    UIScrollView *_scrollView;

    UITextField *_textField1;

    NSInteger _indextext;

}

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    _scrollView = [[UIScrollViewalloc]initWithFrame:CGRectMake(,CGRectGetHeight(self.view.bounds)/,CGRectGetWidth(self.view.bounds) - , )];

    _scrollView.showsHorizontalScrollIndicator = NO;

    _scrollView.showsHorizontalScrollIndicator = NO;

    _scrollView.bounces = NO;

    _scrollView.layer.borderWidth = ;

    [self.view addSubview:_scrollView];

    NSMutableAttributedString * attributedStr4 = [[NSMutableAttributedStringalloc]initWithString:@"请输入约会内容"];

    [attributedStr4 addAttribute:NSForegroundColorAttributeName value:[UIColor grayColor] range:NSMakeRange(, attributedStr4.length)];

    _textField1 = [[UITextField alloc]initWithFrame:CGRectMake(,,CGRectGetWidth(self.view.bounds) - , )];

    _textField1.textAlignment = NSTextAlignmentRight;

    _textField1.text = @"";

    _textField1.textColor = [UIColor grayColor];

    _textField1.font = [UIFont fontWithName:@"Helvetica-Bold" size:];

    _textField1.attributedPlaceholder = attributedStr4;

    [_textField1 addTarget:self action:@selector(textFieldEditChanged:)forControlEvents:UIControlEventEditingChanged];

    [_scrollView addSubview:_textField1];

    _scrollView.contentSize = CGSizeMake(CGRectGetWidth(_textField1.bounds),);

}

- (void)textFieldEditChanged:(UITextField *)textField

{

    if (CGRectGetWidth(_textField1.bounds)  >=CGRectGetWidth(self.view.bounds) - ) {

        _scrollView.contentSize =CGSizeMake(CGRectGetWidth(_textField1.bounds),);

        NSLog(@"%.2f",_scrollView.contentSize.width);

        if (_indextext != _textField1.text.length) {

            [_textField1 sizeToFit];

            [_scrollViewsetContentOffset:CGPointMake(CGRectGetWidth(_textField1.bounds) -CGRectGetWidth(_scrollView.bounds), ) animated:NO];

            _indextext = _textField1.text.length;

        }

    }

    else {

        _textField1.frame = CGRectMake(, ,CGRectGetWidth(self.view.bounds) - , );

        [_scrollView setContentOffset:CGPointMake(, ) animated:NO];

        _scrollView.contentSize = CGSizeMake(CGRectGetWidth(self.view.bounds) - ,);

        _indextext = _textField1.text.length;

    }

    if (_textField1.text.length > ) {

        _textField1.text = [_textField1.text substringToIndex:];

    }

}

@end

- (void)viewDidLoad

{

    [_textField addTarget:self action:@selector(textFieldEditChanged:) forControlEvents:UIControlEventEditingChanged];

    [super viewDidLoad];

}

- (void)textFieldEditChanged:(UITextField *)textField

{

    NSLog(@"textField text : %@", [textField text]);

}