1.swift代码是什么?
2.å¦ä½å¼åä¸ä¸ª AVPlayer iPad ç¨åº
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swift代码是什么?
Swift代码是一种用Swift编程语言编写的源代码。Swift是一种由苹果公司开发并开源的通用编程语言,特别适用于iOS、macOS、ios 唱歌app源码watchOS、tvOS等苹果平台上的应用开发。它结合了C和Objective-C的强大功能,并采用了更加安全、简洁和现代的语法设计。
Swift代码的主要特点是易于阅读、编写和维护。数据可视化 源码它采用了严格的类型安全,这意味着在编写代码时必须明确变量的类型,从而减少了运行时错误的可能性。此外,Swift还提供了强大的小程序地图导航源码错误处理机制,帮助开发者更好地管理程序中的异常和错误。
Swift代码还具有高度的可扩展性和灵活性。它支持面向对象编程、函数式编程和泛型编程等多种编程范式,使开发者能够根据不同的文章编辑器源码需求选择最合适的编程风格。此外,Swift还提供了丰富的标准库和框架,如Foundation、UIKit等,为开发者提供了强大的魅力美容小程序源码功能和工具,简化了开发过程。
下面是一个简单的Swift代码示例,演示了如何在控制台输出“Hello, World!”:
swift
import Foundation
print("Hello, World!")
这个示例中,首先导入了Foundation框架,该框架提供了许多基础功能,如字符串处理、文件操作等。然后,使用print函数将字符串“Hello, World!”输出到控制台。
总之,Swift代码是用Swift编程语言编写的源代码,具有易于阅读、编写和维护、高度可扩展和灵活等特点。通过学习和掌握Swift语言,开发者可以更加高效地开发苹果平台上的应用程序,为用户提供更好的体验和功能。
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}
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}
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}
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#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
@class AVPlayer;
@interface Player : UIView
@property(nonatomic, strong) AVPlayer * player;
-(BOOL) setAirPlay:(BOOL) airplayMode;
@end
#import "Player.h"
#import <AVFoundation/AVFoundation.h>
@implementation Player
+ (Class)layerClass {
return [AVPlayerLayer class];
}
-(AVPlayer *) player{
return [(AVPlayerLayer *)[self layer] player];
}
- (void)setPlayer:(AVPlayer*)player {
[(AVPlayerLayer*)[self layer] setPlayer:player];
}
//Enable or disable AirPlay mode
-(BOOL)setAirPlay:(BOOL)airplayMode{
return self.player.allowsAirPlayVideo=airplayMode;
}
@end
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#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#import "Player.h"
@class Player;
@class AVPlayer;
@interface klViewController : UIViewController
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#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#import Player.h
@class Player;
@class AVPlayer;
@interface klViewController : UIViewController
@property(nonatomic, strong) AVPlayer * myPlayer;
@property(nonatomic, strong) NSURL * avContentUrl;
@property (strong, nonatomic) IBOutlet Player *airPlayView;
@property (nonatomic, retain) IBOutlet UISwitch * AirPlaySwitch;
- (IBAction)PlayVideo:(id)sender;
- (IBAction)PauseVideo:(id)sender;
- (IBAction)isAirPlayOn:(id)sender;
@end
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avContentUrl = [[NSURL alloc] initWithString
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self.myPlayer = [AVPlayer playerWithURL:avContentUrl];
[airPlayView setPlayer:[self myPlayer]];
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- (IBAction)PlayVideo:(id)sender {
[self.myPlayer play];
}
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- (IBAction)PauseVideo:(id)sender {
[self.myPlayer pause];
}
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- (IBAction)isAirPlayOn:(id)sender {
AirPlaySwitch = (UISwitch *) sender;
if (AirPlaySwitch.on) {
[airPlayView setAirPlay:NO];
}else
{
[airPlayView setAirPlay:YES];
}
}
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klViewController.h æ件
#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#import "Player.h"
@class Player;
@class AVPlayer;
@interface klViewController : UIViewController
@property(nonatomic, strong) AVPlayer * myPlayer;
@property(nonatomic, strong) NSURL * avContentUrl;
@property (strong, nonatomic) IBOutlet Player *airPlayView;
@property (nonatomic, retain) IBOutlet UISwitch * AirPlaySwitch;
- (IBAction)PlayVideo:(id)sender;
- (IBAction)PauseVideo:(id)sender;
- (IBAction)isAirPlayOn:(id)sender;
@end
klViewController.m æ件
#import "klViewController.h"
@implementation klViewController
@synthesize airPlayView;
@synthesize avContentUrl, myPlayer, AirPlaySwitch;
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
//This is an Apple sample video
avContentUrl = [[NSURL alloc] initWithString:@" self.myPlayer = [AVPlayer playerWithURL:avContentUrl];
[airPlayView setPlayer:[self myPlayer]];
[self.myPlayer play];
}
- (void)viewDidUnload
{
[self setAirPlayView:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (IBAction)PlayVideo:(id)sender {
[self.myPlayer play];
}
- (IBAction)PauseVideo:(id)sender {
[self.myPlayer pause];
}
- (IBAction)isAirPlayOn:(id)sender {
AirPlaySwitch = (UISwitch *) sender;
if (AirPlaySwitch.on) {
[airPlayView setAirPlay:NO];
}else
{
[airPlayView setAirPlay:YES];
}
}
@end
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