iOS 相机(需真机测试)

今天给大家带来调取相机的 Demo

新建个TestViewController

.h:

#import <UIKit/UIKit.h>

@interface TestViewController : UIViewController

{

    

    //输入框

    UITextView *_textEditor;

    

    //下拉菜单

    UIActionSheet *myActionSheet;

    

    //图片2进制路径

    NSString* filePath;

    

}

@end

.m:

#import "TestViewController.h"

@interface TestViewController ()<UITextViewDelegate,UIActionSheetDelegate,UINavigationControllerDelegate,UIImagePickerControllerDelegate>

@end

@implementation TestViewController

- (void)viewDidLoad {

    [superviewDidLoad];

    //导航栏标题

    self.navigationItem.title =@"Amydom";

    //导航栏按钮

    self.navigationItem.rightBarButtonItem = [[UIBarButtonItemalloc]initWithTitle:@"发送"style:UIBarButtonItemStyleDonetarget:selfaction:@selector(sendInfo)] ;

    //输入框显示区域

    _textEditor = [[UITextViewalloc]initWithFrame:CGRectMake(0,0,320,100)];

    //设置它的代理

    _textEditor.delegate =self;

    _textEditor.autoresizingMask =UIViewAutoresizingFlexibleWidth;

    _textEditor.keyboardType =UIKeyboardTypeDefault;

    _textEditor.font = [UIFontsystemFontOfSize:20];

    _textEditor.text =@"请输入内容";

    //默认软键盘是在触摸区域后才会打开

    //这里表示进入当前ViewController直接打开软键盘

    [_textEditorbecomeFirstResponder];

    

    //把输入框加在视图中

    [self.viewaddSubview:_textEditor];

    

    //下方的图片按钮点击后呼出菜单打开摄像机查找本地相册

    UIImage *image = [[UIImagealloc]initWithContentsOfFile:[[NSBundlemainBundle]pathForResource:@"camera"ofType:@"png"]];

    

    UIButton *button = [UIButtonbuttonWithType:UIButtonTypeCustom];

    button.frame = CGRectMake(0, 120, image.size.width, image.size.height);

    

    [button setImage:imageforState:UIControlStateNormal];

    

    [button addTarget:selfaction:@selector(openMenu)forControlEvents:UIControlEventTouchUpInside];

    

    //把它也加在视图当中

    [self.viewaddSubview:button];

}

-(void)openMenu

{

    //在这里呼出下方菜单按钮项

    myActionSheet = [[UIActionSheetalloc]

                     initWithTitle:nil

                     delegate:self

                     cancelButtonTitle:@"取消"

                     destructiveButtonTitle:nil

                     otherButtonTitles: @"打开照相机",@"从手机相册获取",nil];

    

    [myActionSheetshowInView: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 ([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])

    {

        UIImagePickerController *picker = [[UIImagePickerControlleralloc]init];

        picker.delegate = self;

        //设置拍照后的图片可被编辑

        picker.allowsEditing = YES;

        picker.sourceType = sourceType;

        [selfpresentModalViewController:pickeranimated: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 = [[UIImagePickerControlleralloc]init];

    

    picker.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;

    picker.delegate = self;

    //设置选择后的图片可被编辑

    picker.allowsEditing = YES;

    [selfpresentModalViewController:pickeranimated:YES];

}

//当选择一张图片后进入这里

-(void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

    

    NSString *type = [infoobjectForKey:UIImagePickerControllerMediaType];

    

    //当选择的类型是图片

    if ([type isEqualToString:@"public.image"])

    {

        //先把图片转成NSData

        UIImage* image = [infoobjectForKey:@"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 = [NSFileManagerdefaultManager];

        

        //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:DocumentsPathwithIntermediateDirectories:YESattributes:nilerror:nil];

        [fileManager createFileAtPath:[DocumentsPathstringByAppendingString:@"/image.png"]contents:dataattributes:nil];

        

        //得到选择后沙盒中图片的完整路径

        filePath = [[NSStringalloc]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 = [[UIImageViewalloc]initWithFrame:

                                    CGRectMake(50,120,40, 40)] ;

        

        smallimage.image = image;

        //加在视图中

        [self.viewaddSubview: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);

    

    NSLog(@"您输入框中的内容是：%@",_textEditor.text);

}

- (void)didReceiveMemoryWarning {

    [superdidReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}