// RootViewController.h // Device // // Created by 张国锋 on 15/7/23. // Copyright (c) 2015年 张国锋. All rights reserved. // #import <UIKit/UIKit.h> //带有音频播放器的framework #import <AVFoundation/AVFoundation.h> @interface RootViewController : UIViewController<UINavigationControllerDelegate,UIImagePickerControllerDelegate,AVAudioPlayerDelegate> @end // // RootViewController.m // Device // // Created by 张国锋 on 15/7/23. // Copyright (c) 2015年 张国锋. All rights reserved. // #import "RootViewController.h" //此framework中带有系统预置的多媒体常量参数 #import <MobileCoreServices/MobileCoreServices.h> #import "ImageTool.h"//对图片进行压缩处理的工具类 #import <MediaPlayer/MediaPlayer.h>//此framework中带有视频播放器 @interface RootViewController (){ AVAudioPlayer *_audioPlayer;//音频播放器 //带有视频播放器的控制器(能够播放mp4、avi、mov格式的视频,支持本地和远程视频的播放) MPMoviePlayerViewController*_playController; } @end @implementation RootViewController - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization } return self; } - (void)viewDidLoad { [super viewDidLoad]; NSArray *titles = [NSArray arrayWithObjects:@"拍照",@"相册库",@"音频",@"视频",nil]; for (int i = 0; i<titles.count; i++) { UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect]; [btn setTitle:[titles objectAtIndex:i] forState:UIControlStateNormal]; [btn setFrame:CGRectMake(10,70+i*60,300,50)]; [btn addTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside]; btn.tag = 100+i; [self.view addSubview:btn]; } } #pragma mark - customMethods - (void)btnClicked:(UIButton *)btn{ switch (btn.tag) { case 100: { //拍照功能 //先判断硬件是否支持拍照功能 if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { [self loadImagePickerWithSourceType:UIImagePickerControllerSourceTypeCamera]; }else{ //提示用户 [self showAlertViewWithMessage:@"不支持拍照功能"]; } }break; case 101: { //调用系统相册库 if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) { [self loadImagePickerWithSourceType:UIImagePickerControllerSourceTypePhotoLibrary]; }else { [self showAlertViewWithMessage:@"无法获取相册库"]; } }break; case 102: { //音频 NSString *audioPath = [[NSBundle mainBundle] pathForResource:@"song1" ofType:@"mp3"]; //播音频 [self playAudioWithPath:audioPath]; //[self haha]; }break; case 103: { NSString *videoPath = [[NSBundle mainBundle] pathForResource:@"1" ofType:@"mp4"]; [self playVideoWithPath:videoPath]; //[self hahahaha]; }break; default: break; } } //根据不同的资源参数加载不同的资源（拍照、相册库） - (void)loadImagePickerWithSourceType:(UIImagePickerControllerSourceType)type{ //UIImagePickerController //通过UIImagePickerController 来获取拍照和相册库资源 UIImagePickerController *picker = [[[UIImagePickerController alloc] init] autorelease]; //根据不同的参数加载不同的资源 picker.sourceType = type; //设置代理 picker.delegate = self; //是否允许对图片、视频资源进行后续处理 picker.allowsEditing = YES; //一般情况下picker 习惯通过模态化的方式呈现到程序中 [self presentViewController:picker animated:YES completion:^{ }]; } //根据不同的提示信息来创建警告框,用于提升用户体验 - (void)showAlertViewWithMessage:(NSString *)info{ UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"温馨提示" message:info delegate:nil cancelButtonTitle:nil otherButtonTitles:@"确定", nil]; //将警告框呈现到应用程序 [alert show]; [alert release]; } //根据音频的资源路径来播放音频 - (void)playAudioWithPath:(NSString *)audioPath{ if (audioPath.length == 0) { NSLog(@"没有音频资源!"); return; } //如果有旧的播放器对象，销毁 if (_audioPlayer) { [_audioPlayer release]; _audioPlayer = nil; } //创建新的播放器对象 //本地的资源路径生成url用fileURLWithPath NSURL *url = [NSURL fileURLWithPath:audioPath]; _audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil]; //设置代理 _audioPlayer.delegate = self; //对音频资源进行预加载 [_audioPlayer prepareToPlay]; //播放音频 [_audioPlayer play]; //[_audioPlayer stop]; } //播视频 - (void)playVideoWithPath:(NSString *)videoPath{ if (videoPath.length == 0) { NSLog(@"没有视频资源!"); return; } //可以播放本地和远程视频 NSURL *url; if ([videoPath rangeOfString:@"http://"].location !=NSNotFound || [videoPath rangeOfString:@"https://"].location!=NSNotFound) { url=[NSURL URLWithString:videoPath]; }else{ //本地资源路径 url = [NSURL fileURLWithPath:videoPath]; } if (!_playController) { //创建一个带有视频播放器的控制器 _playController = [[MPMoviePlayerViewController alloc] initWithContentURL:url]; _playController.moviePlayer.movieSourceType = MPMovieSourceTypeFile; //通过模态化的方式呈现 [self presentViewController:_playController animated:YES completion:^{ //停掉音频播放器 [self stopAudioPlayer]; }]; //视频资源分为普通的文件资源,还有流媒体格式(.m3u8)的视频资源 //moviePlayer属性为视频播放器,指定播放的资源的类型 //播放视频 [_playController.moviePlayer play]; //通过点击done按钮后，销毁_playController //每个应用程序有且只有一个通知中心的对象(单例),可以理解为广播站，任何对象都可以通过通知中心发送广播 //任何对象都可以通过通知中心注册成为某条广播的观察者(具有接收/收听某条广播能力的对象) //在通知中心注册self为MPMoviePlayerPlaybackDidFinishNotification广播的观察者，一旦有其他对象发送这条广播，self就能接收到并触发playBack方法 //addObserver 添加观察者, selector 触发的方法,name:广播的名称 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playBack) name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; //点击done按钮->视频播放器会自动通过通知中心发送MPMoviePlayerPlaybackDidFinishNotification这条广播 //[[NSNotificationCenter defaultCenter] postNotificationName:MPMoviePlayerPlaybackDidFinishNotification object:nil]; } } - (void)playBack{ //在通知中心移除self对MPMoviePlayerPlaybackDidFinishNotification广播的观察 [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; if (_playController) { //停掉播放器 [_playController.moviePlayer stop]; //销毁playController [_playController release]; _playController = nil; } } //停掉音频播放器，并销毁 - (void)stopAudioPlayer{ if (_audioPlayer) { [_audioPlayer stop]; [_audioPlayer release]; _audioPlayer = nil; } } #pragma mark - UIImagePickerControllerDelegate //点击picker上的cancel按钮时，触发的方法 - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{ NSLog(@"cancel!!"); //实现picker的dismiss [picker dismissViewControllerAnimated:YES completion:^{ }]; } //点击choose按钮触发的方法 //info 带有选中资源的信息 - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ //判断选中的资源的类型 NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType]; //kUTTypeImage 系统预置的图片资源类型 if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) { //证明取出来的是图片 //通过字典获取选中的图片 UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage]; //从相机中取出来的图片占的空间:(1M-2M)左右,需要对图片进行压缩处理,然后在进行后续操作 //将原图压缩成50*50的尺寸 UIImage *smallImage = [[ImageTool shareTool] resizeImageToSize:CGSizeMake(50,50) sizeOfImage:image]; self.view.backgroundColor = [UIColor colorWithPatternImage:smallImage]; } [picker dismissViewControllerAnimated:YES completion:^{ }]; } #pragma mark - AVAudioPlayerDelegate //当成功播放完成一首歌后，调用此方法 - (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{ NSLog(@"successFully!!"); } //当系统级别的功能介入（来电话了)，播放器被打断时，调用此方法 - (void)audioPlayerBeginInterruption:(AVAudioPlayer *)player{ NSLog(@"beginInterruption!"); } //当播放器结束被打断，调用此方法 - (void)audioPlayerEndInterruption:(AVAudioPlayer *)player withOptions:(NSUInteger)flags{ if (player) { //继续播放 [player play]; } } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end
//小工具 // ImageTool.h // SystemFunction // // Copyright (c) 2013年 qianfeng. All rights reserved. // #import <Foundation/Foundation.h> @interface ImageTool : NSObject //返回单例的静态方法 +(ImageTool *)shareTool; //返回特定尺寸的UImage , image参数为原图片，size为要设定的图片大小 -(UIImage*)resizeImageToSize:(CGSize)size sizeOfImage:(UIImage*)image; //在指定的视图内进行截屏操作,返回截屏后的图片 -(UIImage *)imageWithScreenContentsInView:(UIView *)view; @end // // ImageTool.m // SystemFunction // // Copyright (c) 2013年 qianfeng. All rights reserved. // #import "ImageTool.h" #import <QuartzCore/QuartzCore.h> @implementation ImageTool static ImageTool *_shareImageTool =nil; //返回单例的静态方法 +(ImageTool *)shareTool { //确保线程安全 @synchronized(self){ //确保只返回一个实例 if (_shareImageTool == nil) { _shareImageTool = [[ImageTool alloc] init]; } } return _shareImageTool; } -(id)init { self = [super init]; if (self) { } return self; } //在指定的视图内进行截屏操作,返回截屏后的图片 -(UIImage *)imageWithScreenContentsInView:(UIView *)view { //根据屏幕大小，获取上下文 UIGraphicsBeginImageContext([[UIScreen mainScreen] bounds].size); [view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return viewImage; } -(UIImage*)resizeImageToSize:(CGSize)size sizeOfImage:(UIImage*)image { UIGraphicsBeginImageContext(size); //获取上下文内容 CGContextRef ctx= UIGraphicsGetCurrentContext(); CGContextTranslateCTM(ctx, 0.0, size.height); CGContextScaleCTM(ctx, 1.0, -1.0); //重绘image CGContextDrawImage(ctx,CGRectMake(0.0f, 0.0f, size.width, size.height), image.CGImage); //根据指定的size大小得到新的image UIImage* scaled= UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return scaled; } @end
转载于:https://www.cnblogs.com/0515offer/p/4696186.html
