iOS UITextField拼音预输入

UITextField输入汉字时，在输入框会变成拼音的英文字母。比如输入chang(长)之后，输入qi(期)，此时输入框会显示“长prg期”。通过增加输入框的监听方法，对输入内容进行控制。

#import "ViewController.h"
@interface ViewController ()
@property(nonatomic,strong)UITextField *input;
@end
@implementation ViewController
- (void)viewDidLoad {
    [super viewDidLoad];
   self.input = [[UITextField alloc]initWithFrame:CGRectMake(100, 100, self.view.frame.size.width - 200, 30)];
    _input.backgroundColor = [UIColor yellowColor];
    [self.view addSubview:self.input];
    [self.input addTarget:self action:@selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged];
}
- (void)textFieldDidChange:(UITextField *)textField{
    if (textField.markedTextRange == nil)//点击完选中的字之后
    {
        NSLog(@"text:%@", textField.text);
    }
    else//没有点击出现的汉字,一直在点击键盘
    {
        NSLog(@"markedTextRange:%@",textField.text);
        self.input.text = textField.text;
    }
}
@end

这样改之后输入正常。

#import "ViewController.h"
@interface ViewController ()
@property(nonatomic,strong)UITextField *input;
@end
@implementation ViewController
- (void)viewDidLoad {
    [super viewDidLoad];
   self.input = [[UITextField alloc]initWithFrame:CGRectMake(100, 100, self.view.frame.size.width - 200, 30)];
    _input.backgroundColor = [UIColor yellowColor];
    [self.view addSubview:self.input];
    [self.input addTarget:self action:@selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged];
}
- (void)textFieldDidChange:(UITextField *)textField{
    if (textField.markedTextRange == nil)//点击完选中的字之后
    {
        NSLog(@"text:%@", textField.text);
        self.input.text = textField.text;
    }
    else//没有点击出现的汉字,一直在点击键盘
    {
        NSLog(@"markedTextRange:%@",textField.text);
    }
}
@end