获取本地相册图片

.h
< UIPickerViewDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate>

@property(nonatomic,strong)NSString *filePath;
@property(nonatomic,strong)UIActionSheet *myActionSheet ;

.m

//获取相册和本地图片

-(void)openMenu
{
    
    //在这里呼出下方菜单按钮项
   _myActionSheet = [[UIActionSheet
alloc]
                     initWithTitle:nil
                     delegate:self
                     cancelButtonTitle:@"取消"
                     destructiveButtonTitle:nil
                     otherButtonTitles:
@"打开照相机",
@"从手机相册获取",nil];
    [_myActionSheet
showInView:self.view];
}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
    //呼出的菜单按钮点击后的响应
    if (buttonIndex == _myActionSheet.cancelButtonIndex)
    {
        NSLog(@"取消");
    }
    switch (buttonIndex)
    {
    case
0:  //打开照相机拍照        [self takePhoto];
        break;
    case 1: 
//打开本地相册
        [self LocalPhoto];
        break;
    }
}

//开始拍照
-(void)takePhoto
{
    UIImagePickerControllerSourceType sourceType =
UIImagePickerControllerSourceTypeCamera;
    if ([UIImagePickerController
isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera])
    {
        UIImagePickerController *picker = [[UIImagePickerController
alloc] init];
        picker.delegate =
self;
        //设置拍照后的图片可被编辑
        picker.allowsEditing =
YES;
        picker.sourceType = sourceType;
        [self
presentModalViewController:picker animated:YES];
    }else
    {
        NSLog(@"模拟其中无法打开照相机,请在真机中使用");
    }
}

//打开本地相册
-(void)LocalPhoto
{
    UIImagePickerController *picker = [[UIImagePickerController
alloc] init];
    picker.sourceType =
UIImagePickerControllerSourceTypePhotoLibrary;    picker.delegate =
self;
    //设置选择后的图片可被编辑
    picker.allowsEditing =
YES;
    [self
presentModalViewController:picker animated:YES];
}

//当选择一张图片后进入这里
-(void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    NSString *type = [info
objectForKey:UIImagePickerControllerMediaType];
    
    //当选择的类型是图片
    if ([type isEqualToString:@"public.image"])
    {
        //先把图片转成NSData
        UIImage* image = [info
objectForKey:@"UIImagePickerControllerOriginalImage"];
        NSData *data;
        if (UIImagePNGRepresentation(image) ==
nil)
        {
            data = UIImageJPEGRepresentation(image,
1.0);
        }
        else
        {
            data = UIImagePNGRepresentation(image);
        }
        //图片保存的路径
        //这里将图片放在沙盒的documents文件夹中
        NSString * DocumentsPath = [NSHomeDirectory()
stringByAppendingPathComponent:@"Documents"];

        //文件管理器
        NSFileManager *fileManager = [NSFileManager
defaultManager];

        //把刚刚图片转换的data对象拷贝至沙盒中
并保存为image.png
        [fileManager createDirectoryAtPath:DocumentsPath
withIntermediateDirectories:YES
attributes:nil
error:nil];
        [fileManager createFileAtPath:[DocumentsPath
stringByAppendingString:@"/image.png"]
contents:data attributes:nil];
        //得到选择后沙盒中图片的完整路径
        _filePath = [[NSString
alloc]initWithFormat:@"%@%@",DocumentsPath, 
@"/image.png"];
        //关闭相册界面
        [picker dismissModalViewControllerAnimated:YES];

        //创建一个选择后图片的小图标放在下方
        //类似微薄选择图后的效果
        UIImageView *smallimage = [[UIImageView
alloc] initWithFrame:
                                    CGRectMake(50,
120, 40, 40)];
        smallimage.image = image;
        
        //加在视图中
        [self.view
addSubview:smallimage];

    }
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    NSLog(@"您取消了选择图片");
    
    [picker dismissModalViewControllerAnimated:YES];
    
}

-(void)sendInfo
{
    NSLog(@"图片的路径是：%@", _filePath);
    
}