相机相册闪关灯
#import "RootViewController.h"
#import#define KScreenWidth [[UIScreen mainScreen]bounds].size.width
#define KScreenHeight [[UIScreen mainScreen]bounds].size.height
@interface RootViewController ()
@property(nonatomic, strong)UIImageView *imageView;// 需要引入 #import// 获取硬件设备
@property(nonatomic, strong)AVCaptureDevice *device;
@end
@implementation RootViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.navigationController.navigationBar.translucent = NO;
self.navigationItem.title = @"相机相册闪光灯";
self.imageView = [[UIImageView alloc]initWithFrame:CGRectMake((KScreenWidth - 100) / 2, 30, 100, 100)];
self.imageView.backgroundColor = [UIColor cyanColor];
[self.view addSubview:_imageView];
UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
[button setTitle:@"选择" forState:UIControlStateNormal];
button.frame = CGRectMake((KScreenWidth - 100) / 2, 150, 100, 30);
[button addTarget:self action:@selector(actionSheetAction:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
UIButton *closeButton = [UIButton buttonWithType:UIButtonTypeSystem];
[closeButton setTitle:@"关闭闪关灯" forState:UIControlStateNormal];
closeButton.frame = CGRectMake((KScreenWidth - 100) / 2, 200, 100, 30);
[closeButton addTarget:self action:@selector(closeButton:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:closeButton];
}
- (void)closeButton:(UIButton *)button
{
// 如果闪光灯已经打开，那么把闪光灯关闭
if (self.device.torchMode == AVCaptureTorchModeOn)
{
[self.device setTorchMode:AVCaptureTorchModeOff];
[self.device unlockForConfiguration]; // 解除对设备硬件的独占
}
// 如果闪光灯是关闭状态则提示已经是关闭
else
{
UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"闪关灯是关闭状态" message:nil delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
[alertView show];
}
}
#pragma mark - 点击头像button触发方法 弹出actionSheet -
- (void)actionSheetAction:(UIButton *)button
{
UIActionSheet *actionSheet = [[UIActionSheet alloc]initWithTitle:nil delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"拍照",@"相册",@"闪光灯", nil];
actionSheet.actionSheetStyle = UIActionSheetStyleDefault;
[actionSheet showInView:self.view];
}
#pragma mark ----- ActionSheet触发方法 -----
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
// 调用系统相机
if (buttonIndex == 0)
{
// 如果有系统相机
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
UIImagePickerController * picker = [[UIImagePickerController alloc]init];
picker.delegate = self;
picker.allowsEditing = YES;
//摄像头
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:nil];
}
//如果没有系统相机提示用户
else
{
UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"您的设备没有摄像头" message:nil delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
[alertView show];
}
}
// 调用系统相册
else if (buttonIndex == 1)
{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
UIImagePickerController * picker = [[UIImagePickerController alloc]init];
picker.delegate = self;
picker.allowsEditing = YES;//是否可以编辑
//打开相册选择照片
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
// 模态进入相册
[self presentViewController:picker animated:YES completion:nil];
}
}
else if (buttonIndex == 2)
{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
self.device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; // 返回用于捕获视频数据的设备（摄像头）
if (![self.device hasTorch]) {
NSLog(@"没有闪光灯");
}else{
[self.device lockForConfiguration:nil]; // 请求独占设备的硬件性能
if (self.device.torchMode == AVCaptureTorchModeOff) {
[self.device setTorchMode: AVCaptureTorchModeOn]; // 打开闪光灯
}
}
}
else
{
//如果当前设备没有摄像头
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:@"哎呀，当前设备没有摄像头。" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil];
[alertView show];
}
}
}
#pragma mark - 拍摄完成后或者选择相册完成后自动调用的方法 -
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
// 存入系统相册
// UIImageWriteToSavedPhotosAlbum(backImageView.image, nil, nil, nil);
//得到图片
self.imageView.image = [info objectForKey:UIImagePickerControllerOriginalImage];
NSString *filePath = [self libirayFilePath];
NSLog(@"filePath === %@", filePath);
// 模态返回
[self dismissViewControllerAnimated:YES completion:nil];
}
- (NSString *)libirayFilePath
{
return [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)firstObject];
}
