【代碼筆記】iOS-自訂選擇框（高底強弱），ios-強弱

【代碼筆記】iOS-自訂選擇框（高底強弱），ios-強弱

一，

二，代碼。

ViewController.h

#import <UIKit/UIKit.h>@interface ViewController : UIViewController<UIPickerViewDataSource,UIPickerViewDelegate>@end

 

ViewController.m

#import "ViewController.h"#define Color(r, g, b,d) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:d]#define  W [UIScreen mainScreen].bounds.size.width#define  H [UIScreen mainScreen].bounds.size.height@interface ViewController (){    NSMutableArray *arrayData;    UIView *chooseView;}@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.        //初始化選擇介面    [self addChooseView];}#pragma -mark -functions//初始化選擇頁面-(void)addChooseView{    //背景框    chooseView = [[UIView alloc]initWithFrame:CGRectMake(0,H- H*0.45, W, H*0.45)];    chooseView.backgroundColor = Color(230, 230, 230, 1);    [self.view addSubview:chooseView];        //完成按鈕上面的線    UIView *line3 = [[UIView alloc]initWithFrame:CGRectMake(0, 0, W, 1)];    line3.backgroundColor = Color(202, 202, 202, 1);    [chooseView addSubview:line3];        //完成按鈕下面的線    UIView *line4 = [[UIView alloc]initWithFrame:CGRectMake(0, 40, W, 1)];    line4.backgroundColor = Color(202, 202, 202, 1);    [chooseView addSubview:line4];        //完成按鈕    UIButton *finishedBtn = [UIButton buttonWithType:UIButtonTypeCustom];    finishedBtn.frame = CGRectMake(W-50, 5, 50, 30);    [finishedBtn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];    [finishedBtn setTitle:@"完成" forState:UIControlStateNormal];    [finishedBtn addTarget:self action:@selector(doClickFinishButton) forControlEvents:UIControlEventTouchUpInside];    [chooseView addSubview:finishedBtn];        UIPickerView *choosePicker = [[UIPickerView  alloc]initWithFrame:CGRectMake(0, 40, W, chooseView.bounds.size.height-40)];    choosePicker.delegate = self;    choosePicker.dataSource = self;    [chooseView addSubview:choosePicker];        arrayData=[[NSMutableArray alloc]initWithObjects:@"高",@"中",@"強",@"弱", nil];}#pragma -mark -doClickActions-(void)doClickFinishButton{    chooseView.hidden=YES;    NSLog(@"點擊完成按鈕");}#pragma -mark -UIPickerViewDelegate- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{    return 1;}- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{    return arrayData.count;}- (NSString*)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{    return [arrayData objectAtIndex:row];}- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{    NSString *chooseStr = [NSString stringWithFormat:@"%ld", (long)row];    NSLog(@"---chooseStr--%@",chooseStr);}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end