ios 视频播放器MPMoviePlayerController
这个东西和之前的音频播放差不多, 也是先需要导入系统框架MediaPlayer.framework 才能使用到MPMoviePlayerController 的文件中导入相应的头文件
初始化:这里就有些不一样了MPMoviePlayerController是可以通过远程url初始化的, 例如:
MPMoviePlayerController *moviePlayer = [ [ MPMoviePlayerController alloc]initWithContentURL:[NSURL urlWithString:@"URL"] ];
接下来是控制器样式设置:
moviePlayer.moviewControlMode = MPMovieControlModeHidden;
可以使用下列样式：
MPMovieControlModeDefault 显示播放/暂停、音量和时间控制
MPMovieControlModeVolumeOnly 只显示音量控制
MPMovieControlModeHidden 没有控制器
通常情况下, 我们一般都是自己来定义视频播放器, 所以大多数还是选择最后没有控制器的那个.
屏幕宽高比例:
moviePlayer.scallingMode = MPMovieScallingModeNone;
MPMovieScallingModeNone 不做任何缩放
MPMovieScallingModeAspectFit 适应屏幕大小，保持宽高比
MPMovieScallingModeAspectFill 适应屏幕大小，保持宽高比，可裁剪
MPMovieScallingModeFill 充满屏幕，不保持宽高比
[ moviePlayer play ]; // 开始播放 [ moviePlayer stop ]; // 停止播放
注册一个通知 你的程序可以配置电影播放器在何时候发送通知，包括结束加载内容、技术播放、改变宽高比等。电影播放器会将事件发送到 Cocoa 的通知中心，你可以对其进行配置，指定将这些事件转发到你的应用程序的一个对象。要接收这些通知，需要使用 NSNotificationCenter 类，为电影播放器添加一个观察者(observer):
NSNotificationCenter* notificationCenter = [NSNotificationCenter defaultCenter];
[ notificationCenter addObserver:self selector:@selector(moviePlayerPreloadFinish:) name:MPMoviePlayerContentPreloadDidFinishNotification object:moviePlayer ];
// 通知会发到你指定的委托类和目标方法。通知参数让你可以知道是哪个事件触发了委托方法：
-(void)moviePlayerPreloadDidFinish:(NSNotification*)notification{
//添加你的处理代码
}
你会观察到以下通知：
MPMoviePlayerContentPreloadDidFinishNotification
当电影播放器结束对内容的预加载后发出。因为内容可以在仅加载了一部分的情况下播放，所以这个通知可能在已经播放后才发出。
MPMoviePlayerScallingModeDidChangedNotification
当用户改变了电影的缩放模式后发出。用户可以点触缩放图标，在全屏播放和窗口播放之间切换。
MPMoviePlayerPlaybackDidFinishNotification
当电影播放完毕或者用户按下了Done按钮后发出。
这里有个小实例:自定义视频之用手势来控制视频进度和音量大小
#import <MediaPlayer/MediaPlayer.h> @interface KKBMoviePlayerController : MPMoviePlayerController<UIGestureRecognizerDelegate> @end
#import "KKBMoviePlayerController.h"
#import "AppDelegate.h"
@interface KKBMoviePlayerController(){
BOOL _inFullScreen;
UIPanGestureRecognizer *_pan;
CGPoint _lastPoint;
BOOL _startChange;
BOOL _changeVolume;
}
@end
@implementation KKBMoviePlayerController
- (id)initWithContentURL:(NSURL *)url{
self =[super initWithContentURL:url];
if (self) {
self.view.backgroundColor = [UIColor clearColor];
self.initialPlaybackTime = -1;
self.endPlaybackTime = -1;
[self prepareToPlay];
[self play];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(enterFullScreen:)
name:MPMoviePlayerWillEnterFullscreenNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(leaveFullScreen:)
name:MPMoviePlayerWillExitFullscreenNotification
object:nil];
}
return self;
}
#pragma mark - full screen controller
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
return YES;
}
- (void)handlePan:(UIPanGestureRecognizer*)rec{
if (_inFullScreen) {
if (rec.state == UIGestureRecognizerStateBegan) {
_lastPoint = [rec locationInView:self.view];
} else if (rec.state == UIGestureRecognizerStateChanged) {
CGPoint nowPoint = [rec locationInView:self.view];
if (_startChange == NO) {
if (fabs(nowPoint.y - _lastPoint.y) > fabs(nowPoint.x - _lastPoint.x)) {
_changeVolume = NO;
} else {
_changeVolume = YES;
}
_startChange = YES;
} else {
if (_changeVolume) {
//change volume
float volume = [[MPMusicPlayerController applicationMusicPlayer] volume];
float newVolume = volume;
if (nowPoint.x == _lastPoint.x) {
} else {
if (nowPoint.x < _lastPoint.x) {
newVolume += 0.01;
} else {
newVolume -= 0.01;
}
}
if (newVolume < 0) {
newVolume = 0;
} else if (newVolume > 1.0) {
newVolume = 1.0;
}
[[MPMusicPlayerController applicationMusicPlayer] setVolume:newVolume];
} else {
//change playback state
if (self.playbackState != MPMoviePlaybackStateSeekingForward &&
self.playbackState != MPMoviePlaybackStateSeekingBackward) {
if (nowPoint.y == _lastPoint.y) {
} else {
if (nowPoint.y < _lastPoint.y) {
[self beginSeekingForward];
} else {
[self beginSeekingBackward];
}
}
_lastPoint = nowPoint;
}
}
}
} else if (rec.state == UIGestureRecognizerStateCancelled ||
rec.state == UIGestureRecognizerStateEnded ||
rec.state == UIGestureRecognizerStateFailed){
_startChange = NO;
[self endSeeking];
}
}
}
- (void)enterFullScreen:(NSNotification*)notification{
_inFullScreen = YES;
_pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)];
_pan.delegate = self;
[[[[UIApplication sharedApplication] windows] objectAtIndex:0] addGestureRecognizer:_pan];
}
- (void)leaveFullScreen:(NSNotification*)notification{
_inFullScreen = NO;
[[[[UIApplication sharedApplication] windows] objectAtIndex:0] removeGestureRecognizer:_pan];
}
@end
原文: http://blog.csdn.net/u013561113/article/details/21457903
