UI总结-UIControl和UIControl的一些重要子类
今天写了一个简单的播放器,来体现UIcontrol和UIcontrol子类控件的一些作业:
#import "ViewController.h"
#import<AVFoundation/AVFoundation.h>
@interface ViewController ()
@property(nonatomic, retain)UIImageView *imagev;
@property(nonatomic, retain)AVAudioPlayer *player;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.view.backgroundColor = [UIColor whiteColor];
//UIControl对象采用了一种事件处理机制,将之前写到的事件转化成简单的操作,这样就无需关心用户访问空间的具体方式.
//UIControl是UIView的子类,但它是UIButton,UISwith,UITextfield等控件的父类,它本身包含了一些属性,但是不能直接使用UIControl类,它只是定义子类都使用的方法.
UIControl *control = [[UIControl alloc]initWithFrame:CGRectMake(0, 0, 100, 50)];
control.backgroundColor = [UIColor redColor];
[self.view addSubview:control];
[control release];
//开关按钮
UISwitch *switchOpen = [[UISwitch alloc]initWithFrame:CGRectMake(150, 0, 150, 50)];
[self.view addSubview:switchOpen];
[switchOpen release];
switchOpen.onTintColor = [UIColor blueColor];
switchOpen.tintColor = [UIColor greenColor];
[switchOpen addTarget:self action:@selector(touch:) forControlEvents:UIControlEventValueChanged];
//滑块控件
UISlider *slider = [[UISlider alloc]initWithFrame:CGRectMake(0, 60, 300, 50)];
slider.backgroundColor = [UIColor orangeColor];
[self.view addSubview:slider];
[slider release];
[slider addTarget:self action:@selector(slider:) forControlEvents:UIControlEventValueChanged];
slider.minimumValue = 0;
slider.maximumValue = 235.076;
slider.minimumTrackTintColor = [UIColor blueColor];
slider.maximumTrackTintColor = [UIColor redColor];
slider.thumbTintColor = [UIColor greenColor];
slider.tag = 1000;
//分段控制器
UISegmentedControl *seg = [[UISegmentedControl alloc]initWithItems:@[@"红", @"蓝", @"绿"]];
seg.frame = CGRectMake(0, 120, 300, 50);
[self.view addSubview:seg];
[seg release];
seg.backgroundColor = [UIColor greenColor];
seg.layer.cornerRadius = 10;
[seg addTarget:self action:@selector(seg:) forControlEvents:UIControlEventValueChanged];
//步进控件
UIStepper *step = [[UIStepper alloc]initWithFrame:CGRectMake(0, 180, 100, 50)];
step.backgroundColor = [UIColor grayColor];
[self.view addSubview:step];
[step release];
[step addTarget:self action:@selector(step:) forControlEvents:UIControlEventValueChanged];
//日期选择器
UIDatePicker *date = [[UIDatePicker alloc]initWithFrame:CGRectMake(120, 180, 280, 50)];
[self.view addSubview:date];
date.backgroundColor = [UIColor grayColor];
[date release];
//寻找本地文件路径
NSString *path = [[NSBundle mainBundle]pathForResource:@"童年" ofType:@"mp3"];
NSURL *url = [NSURL fileURLWithPath:path];
//定义播放器
self.player = [[AVAudioPlayer alloc]initWithContentsOfURL:url error:nil];
[self.player play ];
UIButton *button =[UIButton buttonWithType:UIButtonTypeCustom];
button.backgroundColor = [UIColor grayColor];
button.frame = CGRectMake(100, 240, 50, 50);
button.layer.cornerRadius = 25;
[self.view addSubview:button];
[button release];
[button setTitle:@"暂停" forState:UIControlStateNormal];
[button addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];
//定时器
[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(changeTime) userInfo:nil repeats:YES];
//进度条
UIProgressView *pro = [[UIProgressView alloc]initWithFrame:CGRectMake(10, 250, 400, 20)];
pro.progressTintColor = [UIColor orangeColor];
[self.view addSubview:pro];
[pro release];
pro.progress = self.player.currentTime;
}
#pragma mark - switch的点击方法
- (void)touch:(UISwitch *)switchOpen{
NSLog(@"%d",switchOpen.isOn);
if (switchOpen.isOn == 0) {
self.player.volume = 0;
}else{
self.player.volume = 3;
}
}
#pragma mark - slider的点击方法
- (void)slider:(UISlider *)slider{
self.player.currentTime = slider.value;
}
#pragma mark - SegmentedControl的点击方法
-(void)seg:(UISegmentedControl *)seg{
NSLog(@"%ld",seg.selectedSegmentIndex);
switch (seg.selectedSegmentIndex ) {
case 0:
self.view.backgroundColor = [UIColor redColor];
break;
case 1:
self.view.backgroundColor = [UIColor blueColor];
break;
case 2:
self.view.backgroundColor = [UIColor greenColor];
break;
default:
break;
}
}
#pragma mark -stepper的点击方法
-(void)step:(UIStepper *)step{
//用step控制播放器的音量
step.minimumValue = 0;
step.maximumValue = 10;
self.player.volume = step.value;
}
-(void)changeTime{
UISlider *slider = (UISlider *)[self.view viewWithTag:1000];
slider.value = self.player.currentTime;
}
-(void)click:(UIButton *)button{
if ([button.currentTitle isEqualToString:@"播放"]) {
[self.player play];
[button setTitle:@"暂停" forState:UIControlStateNormal];
}else if([button.currentTitle isEqualToString:@"暂停"]){
[self.player pause];
[button setTitle:@"播放" forState:UIControlStateNormal];
}
}
