iOS - 视频和音频相关
2016-10-31 本文已影响0人
Mn_Su
注:本文采用了第三方框架 Masonry 和 ReactiveCocoa,请自行导入
相关素材
Paste_Image.png
第一.视频
1.导入头文件和定义属性
#import <MediaPlayer/MediaPlayer.h>
@property (nonatomic,strong) MPMoviePlayerController *moviePlayer;//视频播放控制器
2.在 viewDidLoad 方法里面添加 play 方法和通知
//添加通知
[self addNotification];
3.相关方法
-(void)dealloc{
//移除所有通知监控
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
#pragma mark - 私有方法
/**
* 取得本地文件路径
*
* @return 文件路径
*/
-(NSURL *)getFileUrl{
NSString *urlStr=[[NSBundle mainBundle] pathForResource:@"经济技术.mp4" ofType:nil];
NSURL *url=[NSURL fileURLWithPath:urlStr];
return url;
}
/**
* 取得网络文件路径
*
* @return 文件路径
*/
-(NSURL *)getNetworkUrl{
NSString *urlStr=@"http://v.qq.com/x/cover/954n4p1nqozp5bg.html";
urlStr=[urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url=[NSURL URLWithString:urlStr];
return url;
}
/**
* 创建媒体播放控制器
*
* @return 媒体播放控制器
*/
-(MPMoviePlayerController *)moviePlayer{
if (!_moviePlayer) {
NSURL *url=[self getFileUrl];
_moviePlayer=[[MPMoviePlayerController alloc]initWithContentURL:url];
_moviePlayer.view.frame = CGRectMake(0, 65, WIDTH, (HEIGHT-65-46)/3);
_moviePlayer.view.autoresizingMask=UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
[self.view addSubview:_moviePlayer.view];
//覆盖播放器表面背景
UIView *myView = [[UIView alloc] initWithFrame:CGRectMake(0, 65, WIDTH, (HEIGHT-65-46)/3)];
myView.backgroundColor = [UIColor clearColor];
[self.view addSubview:myView];
//播放点击按钮
UIButton *playBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[playBtn setImage:[UIImage imageNamed:@"bofang"] forState:UIControlStateNormal];
[myView addSubview:playBtn];
[playBtn makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(myView.top).offset((HEIGHT-65-46)/3*0.5-20);
make.left.equalTo(self.view.left).offset(WIDTH/2-20);
make.width.equalTo(40);
make.height.equalTo(40);
}];
[[playBtn rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(id x) {
[myView removeFromSuperview];
[self.moviePlayer play];
}];
}
return _moviePlayer;
}
/**
* 获取视频缩略图
*/
-(void)thumbnailImageRequest{
//获取13.0s、21.5s的缩略图
[self.moviePlayer requestThumbnailImagesAtTimes:@[@13.0,@21.5] timeOption:MPMovieTimeOptionNearestKeyFrame];
}
第二.音频
1.导入头文件和定义属性
#import <AVFoundation/AVFoundation.h>
//音频相关
@property (nonatomic,strong) AVAudioPlayer *audioPlayer;//播放器
@property (nonatomic,strong) UILabel *controlPanel; //控制面板
@property (nonatomic,strong) UIProgressView *playProgress;//播放进度
@property (nonatomic,strong) UIView *playBG;
@property (nonatomic,strong) UIButton *playOrPause; //播放/暂停按钮(如果tag为0认为是暂停状态，1是播放状态)
@property (nonatomic,strong) NSTimer *timer;//进度更新定时器
@property (nonatomic,strong) UILabel *havTime;
@property (nonatomic,strong) UILabel *totalTime;
2.相关申明
//==============================分割线分割线=============*=================
//播放视图
self.playBG = [[UIView alloc] init];
[self.view addSubview:self.playBG];
[self.playBG makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(pop.picLab.bottom).offset(60);
make.left.equalTo(self.view.left).offset(60);
make.width.equalTo(WIDTH-120);
make.height.equalTo(80);
}];
self.playOrPause = [UIButton buttonWithType:UIButtonTypeCustom];
[self.playOrPause setImage:[UIImage imageNamed:@"play"] forState:UIControlStateNormal];
[self.playOrPause setImage:[UIImage imageNamed:@"pause"] forState:UIControlStateSelected];
self.playOrPause.layer.cornerRadius = 25;
self.playOrPause.layer.shouldRasterize = YES;
self.playOrPause.layer.rasterizationScale = [UIScreen mainScreen].scale;
[self.playBG addSubview:self.playOrPause];
[self.playOrPause makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(self.playBG.top).offset(15);
make.left.equalTo(self.playBG.left).offset(10);
make.width.equalTo(50);
make.height.equalTo(50);
}];
[[self.playOrPause rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(id x) {
self.playOrPause.selected = !self.playOrPause.selected;
if (self.playOrPause.selected) {
[self play];
}else{
[self pause];
}
}];
self.playProgress = [[UIProgressView alloc] init];
[self.playProgress setProgressViewStyle:UIProgressViewStyleDefault];
self.playProgress.progressTintColor = WHITECOLOR;
self.playProgress.trackTintColor = [UIColor colorWithRed:120/255.0 green:53/255.0 blue:54/255.0 alpha:1];
[self.playBG addSubview:self.playProgress];
[self.playProgress makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(self.playBG.top).offset(37.5);
make.left.equalTo(self.playOrPause.right).offset(5);
make.width.equalTo(WIDTH-120-75);
make.height.equalTo(5);
}];
self.havTime = [[UILabel alloc] init];
self.havTime.text = @"00:00";
self.havTime.textAlignment = NSTextAlignmentLeft;
self.havTime.font = [UIFont systemFontOfSize:12];
self.havTime.textColor = WHITECOLOR;
[self.playBG addSubview:self.havTime];
[self.havTime makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(self.playProgress.bottom).offset(0);
make.left.equalTo(self.playOrPause.right).offset(5);
make.width.equalTo(100);
make.height.equalTo(20);
}];
self.totalTime = [[UILabel alloc] init];
NSInteger totalTime = self.audioPlayer.duration;
self.totalTime.text = [NSString stringWithFormat:@"%02ld:%02ld",totalTime/60,totalTime/60];
self.totalTime.textAlignment = NSTextAlignmentRight;
self.totalTime.font = [UIFont systemFontOfSize:12];
self.totalTime.textColor = WHITECOLOR;
[self.playBG addSubview:self.totalTime];
[self.totalTime makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(self.playProgress.bottom).offset(0);
make.right.equalTo(self.playProgress.right).offset(0);
make.width.equalTo(100);
make.height.equalTo(20);
}];
//==============================分割线分割线=============*=================
3.相关方法
#pragma mark - 音频相关
-(NSTimer *)timer{
if (!_timer) {
_timer=[NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(updateProgress) userInfo:nil repeats:true];
}
return _timer;
}
/**
* 创建播放器
*
* @return 音频播放器
*/
-(AVAudioPlayer *)audioPlayer{
if (!_audioPlayer) {
NSString *urlStr=[[NSBundle mainBundle]pathForResource:@"华语群星 - 牵丝戏.mp3" ofType:nil];
NSURL *url=[NSURL fileURLWithPath:urlStr];
NSError *error=nil;
//初始化播放器，注意这里的Url参数只能时文件路径，不支持HTTP Url
_audioPlayer=[[AVAudioPlayer alloc]initWithContentsOfURL:url error:&error];
//设置播放器属性
_audioPlayer.numberOfLoops=0;//设置为0不循环
_audioPlayer.delegate=self;
[_audioPlayer prepareToPlay];//加载音频文件到缓存
if(error){
NSLog(@"初始化播放器过程发生错误,错误信息:%@",error.localizedDescription);
return nil;
}
}
return _audioPlayer;
}
/**
* 播放音频
*/
-(void)play{
if (![self.audioPlayer isPlaying]) {
[self.audioPlayer play];
self.timer.fireDate=[NSDate distantPast];//恢复定时器
}
}
/**
* 暂停播放
*/
-(void)pause{
if ([self.audioPlayer isPlaying]) {
[self.audioPlayer pause];
self.timer.fireDate=[NSDate distantFuture];//暂停定时器，注意不能调用invalidate方法，此方法会取消，之后无法恢复
}
}
/**
* 更新播放进度
*/
-(void)updateProgress{
[UIView animateWithDuration:6 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
float progress = self.audioPlayer.currentTime /self.audioPlayer.duration;
[self.playProgress setProgress:progress animated:YES];
} completion:nil];
// NSLog(@"----progress---%f",progress);
NSInteger time = self.audioPlayer.currentTime;
self.havTime.text = [NSString stringWithFormat:@"%02ld:%02ld",time/60,time%60];
// NSLog(@"----self.havTime.text---%@",self.havTime.text);
}
#pragma mark - 播放器代理方法
-(void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{
NSLog(@"音乐播放完成...");
self.playProgress.progress = 0;
self.playOrPause.selected = !self.playOrPause.selected;
}
