iOS软件开发获取相机图片处理

在点击按钮的方法中 ：

//弹出图片选择器
- (IBAction)btnClick:(id)sender {
   
   
    //向photos中保存图片
    //UIImageWriteToSavedPhotosAlbum([UIImage imageNamed:@"2.jpg"], self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);
   
    //UIImagePickerController : UINavigationController  图片选择器
    //不需要指定根视图控制器
    UIImagePickerController *imagePicker =[[UIImagePickerController alloc]init];
   
    imagePicker.delegate =self;
   
    //是否允许修改
    imagePicker.allowsEditing =YES;
   
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { //以相机为来源
       
        NSLog(@"以相机为来源");
        imagePicker.sourceType =UIImagePickerControllerSourceTypeCamera;
    }/*else if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]){ //图片库
        NSLog(@"以图片库为来源");
        imagePicker.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;
    }*/else{ //相册
        NSLog(@"以相册为来源");
        imagePicker.sourceType =UIImagePickerControllerSourceTypeSavedPhotosAlbum;
    }
   
    [self presentViewController:imagePicker animated:YES completion:nil];
    [imagePicker release];
   
   
}

//选择某个图片之后调用的协议方法
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
    NSLog(@"hhhhh==%@",info);
   
    //Key:
    //UIImagePickerControllerOriginalImage 原生的图片
    //UIImagePickerControllerEditedImage 修改的图片
   
    UIImage *image =[info objectForKey:@"UIImagePickerControllerOriginalImage"];
    _imageView.image =image;
   
    [self dismissViewControllerAnimated:YES completion:nil];
   
}

//点击Cancel按钮时调用的协议方法
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
    NSLog(@"Cancel----");
    [self dismissViewControllerAnimated:YES completion:nil];
}


- (void)dealloc {
    [_imageView release];
    [super dealloc];
}

@end

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