网上有很多自定义相机的例子，这里只是我临时写的一个iOS自定义相机（仿微信）拍照、视频录制demo，仅供参考：
用到了下面几个库：
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#import <AVFoundation/AVFoundation.h>
#import <AssetsLibrary/AssetsLibrary.h>
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在使用的时候需要在Info.plist中把相关权限写进去：
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Privacy - Microphone Usage Description
Privacy - Photo Library Usage Description
Privacy - Camera Usage Description
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我在写这个demo时，是按照微信的样式写的，同样是点击拍照、长按录制视频，视频录制完直接进行播放，这里封装了一个简易的播放器：
m文件
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#import "HAVPlayer.h"
#import <AVFoundation/AVFoundation.h>
@interface HAVPlayer ()
@property (nonatomic,strong) AVPlayer *player;//播放器对象
@end
@implementation HAVPlayer
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
// Drawing code
}
*/
- (instancetype)initWithFrame:(CGRect)frame withShowInView:(UIView *)bgView url:(NSURL *)url {
if (self = [self initWithFrame:frame]) {
//创建播放器层
AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:self.player];
playerLayer.frame = self.bounds;
[self.layer addSublayer:playerLayer];
if (url) {
self.videoUrl = url;
}
[bgView addSubview:self];
}
return self;
}
- (void)dealloc {
[self removeAvPlayerNtf];
[self stopPlayer];
self.player = nil;
}
- (AVPlayer *)player {
if (!_player) {
_player = [AVPlayer playerWithPlayerItem:[self getAVPlayerItem]];
[self addAVPlayerNtf:_player.currentItem];
}
return _player;
}
- (AVPlayerItem *)getAVPlayerItem {
AVPlayerItem *playerItem=[AVPlayerItem playerItemWithURL:self.videoUrl];
return playerItem;
}
- (void)setVideoUrl:(NSURL *)videoUrl {
_videoUrl = videoUrl;
[self removeAvPlayerNtf];
[self nextPlayer];
}
- (void)nextPlayer {
[self.player seekToTime:CMTimeMakeWithSeconds(0, _player.currentItem.duration.timescale)];
[self.player replaceCurrentItemWithPlayerItem:[self getAVPlayerItem]];
[self addAVPlayerNtf:self.player.currentItem];
if (self.player.rate == 0) {
[self.player play];
}
}
- (void) addAVPlayerNtf:(AVPlayerItem *)playerItem {
//监控状态属性
[playerItem addObserver:self forKeyPath:@"status" options:NSKeyValueObservingOptionNew context:nil];
//监控网络加载情况属性
[playerItem addObserver:self forKeyPath:@"loadedTimeRanges" options:NSKeyValueObservingOptionNew context:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playbackFinished:) name:AVPlayerItemDidPlayToEndTimeNotification object:self.player.currentItem];
}
- (void)removeAvPlayerNtf {
AVPlayerItem *playerItem = self.player.currentItem;
[playerItem removeObserver:self forKeyPath:@"status"];
[playerItem removeObserver:self forKeyPath:@"loadedTimeRanges"];
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)stopPlayer {
if (self.player.rate == 1) {
[self.player pause];//如果在播放状态就停止
}
}
/**
* 通过KVO监控播放器状态
*
* @param keyPath 监控属性
* @param object 监视器
* @param change 状态改变
* @param context 上下文
*/
-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context{
AVPlayerItem *playerItem = object;
if ([keyPath isEqualToString:@"status"]) {
AVPlayerStatus status= [[change objectForKey:@"new"] intValue];
if(status==AVPlayerStatusReadyToPlay){
NSLog(@"正在播放...，视频总长度:%.2f",CMTimeGetSeconds(playerItem.duration));
}
}else if([keyPath isEqualToString:@"loadedTimeRanges"]){
NSArray *array=playerItem.loadedTimeRanges;
CMTimeRange timeRange = [array.firstObject CMTimeRangeValue];//本次缓冲时间范围
float startSeconds = CMTimeGetSeconds(timeRange.start);
float durationSeconds = CMTimeGetSeconds(timeRange.duration);
NSTimeInterval totalBuffer = startSeconds + durationSeconds;//缓冲总长度
NSLog(@"共缓冲：%.2f",totalBuffer);
}
}
- (void)playbackFinished:(NSNotification *)ntf {
Plog(@"视频播放完成");
[self.player seekToTime:CMTimeMake(0, 1)];
[self.player play];
}
@end
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另外微信下面的按钮长按会出现圆弧时间条：
m文件
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#import "HProgressView.h"
@interface HProgressView ()
/**
* 进度值0-1.0之间
*/
@property (nonatomic,assign)CGFloat progressValue;
@property (nonatomic, assign) CGFloat currentTime;
@end
@implementation HProgressView
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
// Drawing code
CGContextRef ctx = UIGraphicsGetCurrentContext();//获取上下文
Plog(@"width = %f",self.frame.size.width);
CGPoint center = CGPointMake(self.frame.size.width/2.0, self.frame.size.width/2.0); //设置圆心位置
CGFloat radius = self.frame.size.width/2.0-5; //设置半径
CGFloat startA = - M_PI_2; //圆起点位置
CGFloat endA = -M_PI_2 + M_PI * 2 * _progressValue; //圆终点位置
UIBezierPath *path = [UIBezierPath bezierPathWithArcCenter:center radius:radius startAngle:startA endAngle:endA clockwise:YES];
CGContextSetLineWidth(ctx, 10); //设置线条宽度
[[UIColor whiteColor] setStroke]; //设置描边颜色
CGContextAddPath(ctx, path.CGPath); //把路径添加到上下文
CGContextStrokePath(ctx); //渲染
}
- (void)setTimeMax:(NSInteger)timeMax {
_timeMax = timeMax;
self.currentTime = 0;
self.progressValue = 0;
[self setNeedsDisplay];
self.hidden = NO;
[self performSelector:@selector(startProgress) withObject:nil afterDelay:0.1];
}
- (void)clearProgress {
_currentTime = _timeMax;
self.hidden = YES;
}
- (void)startProgress {
_currentTime += 0.1;
if (_timeMax > _currentTime) {
_progressValue = _currentTime/_timeMax;
Plog(@"progress = %f",_progressValue);
[self setNeedsDisplay];
[self performSelector:@selector(startProgress) withObject:nil afterDelay:0.1];
}
if (_timeMax <= _currentTime) {
[self clearProgress];
}
}
@end
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接下来就是相机的控制器了，由于是临时写的，所以用的xib，大家不要直接使用，直接上m文件代码吧：
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