[Code Note] iOS-custom selection box (high bottom strength), ios-strength

[Code Note] iOS-custom selection box (high bottom strength), ios-strength

I,

Ii. Code.

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. // initialization selection interface [self addChooseView];} # pragma-mark-functions // initialization selection page-(void) addChooseView {// background box 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]; // line UIView * line3 = [[UIView alloc] initWithFrame: CGRectMake (0, 0, W, 1)] above the completion button; line3.backgroundColor = Color (202,202,202, 1); [chooseView addSubview: line3]; // line UIView * line4 = [[UIView alloc] initWithFrame: CGRectMake (0, 40, 40, w, 1)]; line4.backgroundColor = Color (202,202,202, 1); [chooseView addSubview: line4]; // complete button UIButton * finishedBtn = [UIButton buttonWithType: Finished]; finishedBtn. frame = CGRectMake (W-50, 5, 50, 30); [finishedBtn setTitleColor: [UIColor blueColor] forState: UIControlStateNormal]; [finishedBtn setTitle: @ "done" forState: UIControlStateNormal]; [Export addTarget: self action: @ selector (optional) forControlEvents: Events]; [chooseView addSubview: Events]; UIPickerView * choosePicker = [[Export alloc] initWithFrame: CGRectMake (0, 40, W, chooseView. bounds. size. height-40)]; choosePicker. delegate = self; choosePicker. dataSource = self; [chooseView addSubview: choosePicker]; arrayData = [[NSMutableArray alloc] initWithObjects: @ "high", @ "medium", @ "strong", @ "weak ", nil] ;}# pragma-mark-doClickActions-(void) doClickFinishButton {chooseView. hidden = YES; NSLog (@ "click Finish") ;}# 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 didreceivemorywarning]; // Dispose of any resources that can be recreated .} @ end