iOS开发：调用相关设备

一、调用电话

- (IBAction)callPhone:(id)sender {
    
#if 0
    //tel:// 打电话
    NSURL *url = [NSURL URLWithString:@"tel://10010"];
    [[UIApplication sharedApplication] openURL:url];
#else
    //打电话 可以使用webView作为弹窗显示
    if (self.webView == nil) {
        self.webView = [[UIWebView alloc]init];
    }
    
    NSURL *url = [NSURL URLWithString:@"tel://10010"];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    //显示
    [self.webView loadRequest:request];
    
#endif
    
}

电话、邮件调用需要包含头文件#import <MessageUI/MessageUI.h>

二、调用短信，需要遵守协议<MFMessageComposeViewControllerDelegate>

- (IBAction)sendMessage:(id)sender {
#if 0
    //用下面这种方式发送信息 跳转到信息界面 取消还是发送 不能回到原来的app
    //sms:// 发短信
    NSURL *url = [NSURL URLWithString:@"sms://123456"];
    [[UIApplication sharedApplication] openURL:url];
#else
    //判断是否能发送信息
    BOOL ret = [MFMessageComposeViewController canSendText];
    if (ret) {
        
        MFMessageComposeViewController *controller = [[MFMessageComposeViewController alloc]init];
        
        //要发送消息的电话
        controller.recipients = [NSArray arrayWithObject:@"10010"];
        
        controller.body = @"nobody nobody";//要发送的短信的内容
        
        //设置代理
        controller.messageComposeDelegate = self;
        
        //修改短信界面的标题
        [[[controller viewControllers] lastObject] setTitle:@"短信"];
        NSLog(@"可以发送");
        
        //弹出界面
        [self presentViewController:controller animated:YES completion:nil];
        
    }else{
        NSLog(@"不能发送");
    }
    
#endif
}
#pragma mark--发送消息协议，发送完成调用此方法。返回发送结果
- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result{
    
    //把当前短信界面消失
    [controller dismissViewControllerAnimated:YES completion:nil];
    /*
     MessageComposeResultCancelled,
     MessageComposeResultSent,
     MessageComposeResultFailed
     */
    switch (result) {
        case MessageComposeResultCancelled:
            NSLog(@"取消发送");
            break;
        case MessageComposeResultSent:
            NSLog(@"发送成功");
            break;
        case MessageComposeResultFailed:
            NSLog(@"发送失败");
            break;
        default:
            break;
    }
    
}

三、调用邮件，需要遵守协议<MFMailComposeViewControllerDelegate>

- (IBAction)sentMail:(id)sender {
#if 0
    //mailto:// 发邮件
    NSURL *url = [NSURL URLWithString:@"mailto://[email protected]"];
    [[UIApplication sharedApplication] openURL:url];
#else
    //MFMailComposeViewController 发邮件的类
    MFMailComposeViewController *mail = [[MFMailComposeViewController alloc]init];
    if (!mail) {
        NSLog(@"当前设备不支持应用内发送邮件");
        return;
    }
    
    if ([MFMailComposeViewController canSendMail]) {
        
        MFMailComposeViewController *controller = [[MFMailComposeViewController alloc]init];
        //设置代理
        controller.mailComposeDelegate = self;
        
        //添加收件人
        [controller setToRecipients:[NSArray arrayWithObject:@"[email protected]"]];
        
        [controller setMessageBody:@"马化腾" isHTML:NO];
        
        //弹出界面
        [self presentViewController:controller animated:YES completion:nil];
        
    }else{
        NSLog(@"不能发送邮件");
    }
    
#endif
}
#pragma mark--发送邮件协议，发送完成调用此方法。返回发送结果
- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{
    
    [controller dismissViewControllerAnimated:YES completion:nil];
    /*
     MFMailComposeResultCancelled,
     MFMailComposeResultSaved,
     MFMailComposeResultSent,
     MFMailComposeResultFailed
     */
    switch (result) {
        case MFMailComposeResultCancelled:
            NSLog(@"取消发送");
            break;
        case MFMailComposeResultSaved:
            NSLog(@"保存");
            break;
        case MFMailComposeResultSent:
            NSLog(@"发送成功");
            break;
        case MFMailComposeResultFailed:
            NSLog(@"发送失败");
            break;
        default:
            break;
    }
    
}

四、调用图库或相机

需要遵守的协议<UIActionSheetDelegate,UINavigationControllerDelegate,UIImagePickerControllerDelegate>

//调取提示框的代码

- (IBAction)click:(id)sender {
    UIActionSheet * sheet = [[UIActionSheet alloc] initWithTitle:@"打开相机或照片库" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"相机" otherButtonTitles:@"照片库", nil];
    [sheet showInView:self.view];
}

//提示框的代理方法

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
    if (buttonIndex == 3) return;
    
    UIImagePickerController * picker = [[UIImagePickerController alloc] init];
    picker.allowsEditing = YES;
    picker.delegate = self;
    if (buttonIndex == 0) {
        UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;
        //如果没有拍照功能
        if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
            sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        }
        picker.sourceType = sourceType;
        picker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:sourceType];
    }
    else if(buttonIndex == 1){
        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
            
            picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;   
        }
    }
    [self presentViewController:picker animated:YES completion:nil];
}

#pragma mark--点击相册中的图片 货照相机照完后点击use  后触发的方法

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info{
    
/* info dictionary keys
 
UIImagePickerControllerOriginalImage// a UIImage
UIImagePickerControllerEditedImage// a UIImage
UIImagePickerControllerMediaURL// an NSURL

*/
    
    //获取修改后的图片
    UIImage *editedImg = info[UIImagePickerControllerEditedImage];
    NSURL * mediaUrl = info[UIImagePickerControllerMediaURL];
    
    if (editedImg) {
        
        //更改cell里的图片
        [self.headPicture.layer.sublayers.lastObject removeFromSuperlayer];
        self.headPicture.image = editedImg;
    }
    
    if (mediaUrl) {
        self.headPicture.image = nil;
        [self creatMediaPlayerWithUrl:mediaUrl];
    }
    
    //移除图片选择的控制器
    [self dismissViewControllerAnimated:YES completion:nil];
}

#pragma mark--点击cancel 调用的方法

-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
    NSLog(@"取消了操作");
    [self dismissViewControllerAnimated:YES completion:nil];
}

#pragma mark--创建播放器

-(void)creatMediaPlayerWithUrl:(NSURL * )url{
    // 创建播放器
    AVPlayer *player = [AVPlayer playerWithURL:url];
    [player play];
    // 创建播放器图层
    AVPlayerLayer *layer = [AVPlayerLayer layer];
    layer.player = player;
    layer.frame = self.headPicture.bounds;
    // 添加图层到控制器的view
    [self.headPicture.layer addSublayer:layer];
    self.player = player;
}