iOS开发拓展篇—音频处理（音乐播放器2）

//  YYPlayingViewController.h

#import <UIKit/UIKit.h>

@interface YYPlayingViewController : UIViewController
//显示控制器
-(void)show;
@end

//
//  YYPlayingViewController.m
//

#import "YYPlayingViewController.h"

@interface YYPlayingViewController ()
- (IBAction)exit;

@end

@implementation YYPlayingViewController
#pragma mark-公共方法
-(void)show
{
    //1.禁用整个app的点击事件
    UIWindow *window=[UIApplication sharedApplication].keyWindow;
    window.userInteractionEnabled=NO;
    
    //2.添加播放界面
    //设置View的大小为覆盖整个窗口
    self.view.frame=window.bounds;
    //设置view显示
    self.view.hidden=NO;
    //把View添加到窗口上
    [window addSubview:self.view];
    
    //3.使用动画让View显示
    self.view.y=self.view.height;
    [UIView animateWithDuration:0.25 animations:^{
        self.view.y=0;
    } completion:^(BOOL finished) {
        window.userInteractionEnabled=YES;
    }];
}
#pragma mark-内部的按钮监听方法
//返回按钮
- (IBAction)exit {
    //1.禁用整个app的点击事件
    UIWindow *window=[UIApplication sharedApplication].keyWindow;
    window.userInteractionEnabled=NO;
    
    //2.动画隐藏View
    [UIView animateWithDuration:0.25 animations:^{
        self.view.y=window.height;
    } completion:^(BOOL finished) {
        window.userInteractionEnabled=YES;
        //设置view隐藏能够节省一些性能
        self.view.hidden=YES;
    }];
}
@end

/**
 *  cell的点击事件
 */
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    //取消选中被点击的这行
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    
    //调用公共方法
    [self.playingViewController show];
    
//    //执行segue跳转
//    [self performSegueWithIdentifier:@"music2playing" sender:nil];
}