零散知識點記錄

設定UIView的陰影製作效果：

    [[self.view layer] setShadowOffset:CGSizeMake(2, 2)];    [[self.view layer] setShadowRadius:6];    [[self.view layer] setShadowOpacity:1];     [[self.view layer] setShadowColor:[UIColor blackColor].CGColor];

        MPMoviePlayerViewController* tmpMoviePlayViewController=[[[MPMoviePlayerViewController alloc] initWithContentURL:URL] autorelease];        if (tmpMoviePlayViewController)        {            tmpMoviePlayViewController.moviePlayer.shouldAutoplay = NO;            tmpMoviePlayViewController.view.userInteractionEnabled = NO;// 設定這個VIEW不響應事件，會將所有事件傳給它的superview            [tmpMoviePlayViewController.view setFrame: self.view.bounds];            tmpMoviePlayViewController.moviePlayer.controlStyle = MPMovieControlStyleNone;// 去除視頻播放器的所有風格                        [self presentMoviePlayerViewControllerAnimated:tmpMoviePlayViewController];            [self.view addSubview:tmpMoviePlayViewController.view];                        self.moviePlayer = tmpMoviePlayViewController;            [tmpMoviePlayViewController release];        } 

擷取視屏播放的當前事件、總時間長度、開始播放事件等NSTimeInterval currentTime = self.movieController.moviePlayer.moviePlayer.currentPlaybackTime;// 擷取視頻播放的目前時間    NSTimeInterval duration = self.movieController.moviePlayer.moviePlayer.duration;// 擷取總時間長度NSTimeInterval轉換成時分秒NSString類型：    NSString *string = [NSString stringWithFormat:@"%02li:%02li:%02li",                        lround(floor(time / 3600.)) % 100,                        lround(floor(time / 60.)) % 60,                        lround(floor(time / 1.)) % 60];    NSLog(@"%f, %@", time, string);

UISlider的用發：

    UISlider *slider = [[UISlider alloc] initWithFrame:CGRectMake(20, 800, 768, 10)];    self.moviePlayerProgress = slider;    [slider release];        [self.view addSubview:self.moviePlayerProgress];    self.moviePlayerProgress.minimumValue = 0.0;    self.moviePlayerProgress.maximumValue = 100;    [self.moviePlayerProgress setValue:currentTime animated:YES];

// 相應事件

[self.moviePlayerProgressaddTarget:selfaction:@selector(valueChange)forControlEvents:UIControlEventTouchUpInside];

- (void) valueChange

{

    float value =self.moviePlayerProgress.value;

}