UI06_LTView

来源：互联网发布：linux入门教程推荐编辑：程序博客网时间：2024/06/03 18:31

LTView:全称label , textField , view创建一个LTView类继承于UIViewLTView.h#import <UIKit/UIKit.h>1.在LTView.h文件中签订协议UITextFieldDelegate.@interface LTView : UIView<UITextFieldDelegate>2.因为LTView里的label和textField需要在外面设置一些内容,所以需要在.h文件里把他们设置成属性.@property(nonatomic, retain)UILabel *myLabel;@property(nonatomic, retain)UITextField *myTextField;@endLTView.m#import "LTView.h"@implementation LTView3.重写initWithFrame方法.- (instancetype)initWithFrame:(CGRect)frame {    self = [super initWithFrame:frame];    if (self) {        // 创建label和textField        [self creatView];   // 代码模块化.    }    return self;}- (void)creatView {4.创建label    self.myLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 20, 150, 50)];    self.myLabel.layer.borderWidth = 1;    self.myLabel.layer.cornerRadius = 10;    [self addSubview:self.myLabel];   // 把label贴在LTView上.    [_myLabel release];5.创建textFieldself.myTextField = [[UITextField alloc] initWithFrame:CGRectMake(180, 20, 150, 50)];self.myTextField.layer.borderWidth = 1;self.myTextField.layer.cornerRadius = 10;[self addSubview:self.myTextField];   // 把textField贴在LTView上.[_myTextField release];self.myTextField.clearButtonMode = UITextFieldViewModeAlways;self.myTextField.delegate = self;}- (BOOL)textFieldShouldReturn:(UITextField *)textField {    [self.myTextField resignFirstResponder];    return YES;}- (void)dealloc{    [_myLabel release];    [_myTextField release];    [super dealloc];}AppDelegate.m#import "AppDelegate.h”#import “LTView.h”   // 引入LTView的头文件.@interface AppDelegate ()@end@implementation AppDelegate- (void)dealloc{    [_window release];    [super dealloc];}- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];    // Override point for customization after application launch.    self.window.backgroundColor = [UIColor whiteColor];    [self.window makeKeyAndVisible];    [_window release];    // 用LTView来创建视图.    LTView *view = [[LTView alloc] initWithFrame:CGRectMake(0, 50, 375, 100)];    view.backgroundColor = [UIColor greenColor];    [self.window addSubview:view];    [view release];

LTView

    return YES;}注意:如果label或者textField的大小超出了LTView的范围,那么超出的范围没有功能性,只有显示性.

0 0