当前位置:新注册送38元体验金 > 新注册送38元体验金操作系统 > iPhone应用开发之UIPickerView使用DEMO

iPhone应用开发之UIPickerView使用DEMO

文章作者:新注册送38元体验金操作系统 上传时间:2019-08-22

iPhone应用开发之UIPickerView使用DEMO是本文要介绍的内容,内容不多,本文基于代码实现的内容,主要编写选择器的实现。从生肖选择、学历选择等来实现UIPickerView的用法,来看详细内容。

@interface Set_starViewController : UIViewController<UIPickerViewDelegate>{  UIPickerView  *pickerview;  UILabel       *contentview;  NSArray       *content;//星座  id      _delegate;  int     _type;  }  -(id)initWithDelegate:(id)delegate type:(int)type;  - (void)setString:(id)sender;  @end  //  Set_starViewController.m  //  //  Created by AmorYin on 10-11-23.  //  Copyright 2010 __MyCompanyName__. All rights reserved.  //  #import "Set_starViewController.h"  @implementation Set_starViewController  -(id)initWithDelegate:(id)delegate type:(int)type  {  self = [super init];  if (self != nil){  UILabel *titleText = [[UILabel alloc] initWithFrame: CGRectMake(0, 0, 200, 20)];  titleText.backgroundColor = [UIColor clearColor];  titleText.textAlignment = UITextAlignmentCenter;  titleText.textColor = [UIColor colorWithRed:0.33 green:0.33 blue:0.33 alpha:1.0];  [titleText setFont:[UIFont systemFontOfSize:15.0]];  [titleText setText:@"星座"];  self.navigationItem.titleView=titleText;  [titleText release];  _delegate = delegate;  UIButton *back = [[UIButton alloc] initWithFrame:CGRectMake(0.0, 0.0, 62.0, 32.0)];  [back setBackgroundImage:[UIImage imageNamed:@"返回按钮.png"] forState:UIControlStateNormal];  [back setBackgroundImage:[UIImage imageNamed:@"返回按钮按下.png"] forState:UIControlStateHighlighted];  [back setBackgroundImage:[UIImage imageNamed:@"返回按钮.png"] forState:UIControlStateDisabled];  [back addTarget:_delegate  action:@selector(backView)    forControlEvents:UIControlEventTouchUpInside];  UIBarButtonItem *add = [[UIBarButtonItem alloc] initWithCustomView:back];  [[self navigationItem] setLeftBarButtonItem:add];  [add release];  [back release];  UIBarButtonItem *save = nil;  save = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave  target:self   action:@selector(setString:)];  self.navigationItem.rightBarButtonItem = save;  save = nil;  [save release];  if (type == 0) {  content = [[NSArray alloc] initWithObjects:@"水瓶座",@"双鱼座",@"白羊座",@"金牛座"    ,@"双子座",@"巨蟹座",@"狮子座",@"处女座"    ,@"天秤座",@"天蝎座",@"射手座",@"山羊座",nil];  _type = 0;  }else {  content = [[NSArray alloc] initWithObjects:@"初中",@"高中",@"中技",@"中专",@"大专",@"本科",@"MBA",@"硕士"     ,@"其他",nil];  _type = 1;  }  }  return self;  }   -(void) loadView  {  UIView  *myview = [[[UIView alloc] initWithFrame:[UIScreen mainScreen].applicationFrame] autorelease];  myview.autoresizesSubviews = YES;  [myview setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"background.png"]]];  self.view  = myview;  // 设置选择器  pickerview = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0, 150.0, 320.0, 216.0)];  pickerview.delegate = self;  pickerview.showsSelectionIndicator = YES;  [self.view addSubview:pickerview];  contentview = [[UILabel alloc] initWithFrame:CGRectMake(80.0, 80.0, 100.0, 40.0)];  contentview.backgroundColor = [UIColor clearColor];  [self.view addSubview: contentview];   }   - (void)didReceiveMemoryWarning {      // Releases the view if it doesn't have a superview.      [super didReceiveMemoryWarning];      // Release any cached data, images, etc that aren't in use.  }  - (void)viewDidUnload {      [super viewDidUnload];      // Release any retained subviews of the main view.      // e.g. self.myOutlet = nil;  }  - (void)dealloc {      [super dealloc];  [contentview release];  [pickerview release];  [content release];  }   #pragma mark -  #pragma mark 处理方法  // 返回显示的列数  - (NSInteger)numberOfComponentsInPickerView:(UIPickerView*)pickerView  {  return 1;  }  // 返回当前列显示的行数   - (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component  {  return [content count];  }  // 设置当前行的内容,若果行没有显示则自动释放  - (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component  {  return [content objectAtIndex:row];  }  - (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component  {  //NSString *result = [pickerView pickerView:pickerView titleForRow:row forComponent:component];  NSString  *result = nil;  result = [content objectAtIndex:row];  NSLog(@"result: %@",result);  contentview.text = result;  [result release];  }   - (void)setString:(id)sender  {  // 传递值  if (_type ==0) {  [_delegate setSomthing:contentview.text name:@"star"];  }else {  [_delegate setSomthing:contentview.text name:@"xueli"];  }  [self.navigationController popViewControllerAnimated:YES];  [self.navigationController pushViewController:_delegate animated:YES];  [self.navigationController setNavigationBarHidden:NO];  }  @end 

小结:iPhone应用开发之UIPickerView使用DEMO的内容介绍完了,希望通过本文的学习对你有所帮助!

应用开发之 UIPickerView 使用 DEMO 是本文要介绍的内容,内容不多,本文基于代码实现的内容,主要编写选择器的实现。从生肖选择、学...

本文由新注册送38元体验金发布于新注册送38元体验金操作系统,转载请注明出处:iPhone应用开发之UIPickerView使用DEMO

关键词: