【代码笔记】改变文字输入框背景

一，效果图。

二，工程图。

三，代码。

RootViewController.h

#import <UIKit/UIKit.h>

@interface RootViewController : UIViewController <UITextFieldDelegate>

@end

 

RootViewController.m

- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. //初始化背景
 [self addView]; } #pragma -mark -functions
-(void)addView { UITextField *textField=[[UITextField alloc]initWithFrame:CGRectMake(50, 100, 200, 50)]; textField.backgroundColor=[UIColor redColor]; textField.delegate=self; [self.view addSubview:textField]; } #pragma -mark -UITextFieldDelegate
-(BOOL) textFieldShouldBeginEditing:(UITextField *)textField{ [textField setBackground:[UIImage imageNamed:@"1.jpg"]]; return YES; } -(void) textFieldDidEndEditing:(UITextField *)textField{ [textField setBackground:[UIImage imageNamed:@"2.jpg"]]; } -(BOOL)textFieldShouldReturn: (UITextField *)TextField{ [TextField resignFirstResponder]; return YES; }