IOS研究院之打开照相机与本地相册选择图片

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#import <UIKit/UIKit.h>

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#import "TestViewController.h"

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@interface AppDelegate : UIResponder <UIApplicationDelegate>

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@property (strong, nonatomic) UIWindow *window;

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@property (strong, nonatomic) UINavigationController *navController;

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@property (strong, nonatomic) UIViewController *viewController;

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@end

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#import "AppDelegate.h"

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@implementation AppDelegate

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@synthesize window = _window;

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@synthesize navController;

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@synthesize viewController;

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- (

void

)dealloc

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{

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[_window release];

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[super dealloc];

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}

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- (

BOOL

)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

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{

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self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

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self.window.backgroundColor = [UIColor whiteColor];

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self.viewController =  [[TestViewController alloc]init];

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self.navController = [[UINavigationController alloc] initWithRootViewController:self.viewController];

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[self.window addSubview:navController.view];

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[self.window makeKeyAndVisible];

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return

YES;

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}

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@end

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#import <UIKit/UIKit.h>

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@interface TestViewController : UIViewController<UITextViewDelegate,UIActionSheetDelegate,UINavigationControllerDelegate,UIImagePickerControllerDelegate>

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{

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//输入框

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UITextView *_textEditor;

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//下拉菜单

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UIActionSheet *myActionSheet;

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//图片2进制路径

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NSString* filePath;

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}

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@end

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#import "TestViewController.h"

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@interface TestViewController ()

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@end

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@implementation TestViewController

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- (

void

)viewDidLoad

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{

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[super viewDidLoad];

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//导航栏标题

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self.navigationItem.title = @

"雨松MOMO输入框"

;

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//导航栏按钮

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self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc]

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initWithTitle: @

"发送"

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style: UIBarButtonItemStyleDone

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target: self

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action: @selector(sendInfo)] autorelease];

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//输入框显示区域

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

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//设置它的代理

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_textEditor.delegate = self;

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_textEditor.autoresizingMask = UIViewAutoresizingFlexibleWidth;

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_textEditor.keyboardType = UIKeyboardTypeDefault;

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_textEditor.font = [UIFont systemFontOfSize:20];

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_textEditor.text = @

"请输入内容"

;

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//默认软键盘是在触摸区域后才会打开

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//这里表示进入当前ViewController直接打开软键盘

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[_textEditor becomeFirstResponder];

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//把输入框加在视图中

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[self.view addSubview:_textEditor];

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//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

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UIImage *image = [[UIImage alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@

"camera"

ofType:@

"png"

]];

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UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

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

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[button setImage:image forState:UIControlStateNormal];

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

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//把它也加在视图当中

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[self.view addSubview:button];

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}

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-(

void

)openMenu

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{

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//在这里呼出下方菜单按钮项

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myActionSheet = [[UIActionSheet alloc]

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initWithTitle:nil

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delegate:self

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cancelButtonTitle:@

"取消"

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destructiveButtonTitle:nil

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otherButtonTitles: @

"打开照相机"

, @

"从手机相册获取"

,nil];

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[myActionSheet showInView:self.view];

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[myActionSheet release];

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}

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- (

void

)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

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{

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//呼出的菜单按钮点击后的响应

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if

(buttonIndex == myActionSheet.cancelButtonIndex)

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{

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NSLog(@

"取消"

);

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}

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switch

(buttonIndex)

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{

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case

0:

//打开照相机拍照

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[self takePhoto];

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break

;

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case

1:

//打开本地相册

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[self LocalPhoto];

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break

;

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}

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}

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//开始拍照

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-(

void

)takePhoto

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{

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UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;

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if

([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera])

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{

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UIImagePickerController *picker = [[UIImagePickerController alloc] init];

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picker.delegate = self;

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//设置拍照后的图片可被编辑

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picker.allowsEditing = YES;

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picker.sourceType = sourceType;

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[picker release];

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[self presentModalViewController:picker animated:YES];

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}

else

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{

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NSLog(@

"模拟其中无法打开照相机,请在真机中使用"

);

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}

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}

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//打开本地相册

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-(

void

)LocalPhoto

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{

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UIImagePickerController *picker = [[UIImagePickerController alloc] init];

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picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

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picker.delegate = self;

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//设置选择后的图片可被编辑

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picker.allowsEditing = YES;

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[self presentModalViewController:picker animated:YES];

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[picker release];

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}

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//当选择一张图片后进入这里

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-(

void

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

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{

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NSString *type = [info objectForKey:UIImagePickerControllerMediaType];

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//当选择的类型是图片

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if

([type isEqualToString:@

"public.image"

])

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{

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//先把图片转成NSData

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UIImage* image = [info objectForKey:@

"UIImagePickerControllerOriginalImage"

];

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NSData *data;

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if

(UIImagePNGRepresentation(image) == nil)

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{

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data = UIImageJPEGRepresentation(image, 1.0);

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}

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else

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{

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data = UIImagePNGRepresentation(image);

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}

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//图片保存的路径

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//这里将图片放在沙盒的documents文件夹中

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NSString * DocumentsPath = [NSHomeDirectory() stringByAppendingPathComponent:@

"Documents"

];

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//文件管理器

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NSFileManager *fileManager = [NSFileManager defaultManager];

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//把刚刚图片转换的data对象拷贝至沙盒中 并保存为image.png

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[fileManager createDirectoryAtPath:DocumentsPath withIntermediateDirectories:YES attributes:nil error:nil];

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[fileManager createFileAtPath:[DocumentsPath stringByAppendingString:@

"/image.png"

] contents:data attributes:nil];

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//得到选择后沙盒中图片的完整路径

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filePath = [[NSString alloc]initWithFormat:@

"%@%@"

,DocumentsPath,  @

"/image.png"

];

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//关闭相册界面

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[picker dismissModalViewControllerAnimated:YES];

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//创建一个选择后图片的小图标放在下方

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//类似微薄选择图后的效果

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UIImageView *smallimage = [[[UIImageView alloc] initWithFrame:

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

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smallimage.image = image;

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//加在视图中

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[self.view addSubview:smallimage];

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}

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}

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- (

void

)imagePickerControllerDidCancel:(UIImagePickerController *)picker

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{

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NSLog(@

"您取消了选择图片"

);

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[picker dismissModalViewControllerAnimated:YES];

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}

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-(

void

)sendInfo

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{

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NSLog(@

"图片的路径是：%@"

, filePath);

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NSLog(@

"您输入框中的内容是：%@"

, _textEditor.text);

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}

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- (

void

)viewDidUnload

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{

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[super viewDidUnload];

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// Release any retained subviews of the main view.

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}

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- (

BOOL

)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

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{

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return

(interfaceOrientation == UIInterfaceOrientationPortrait);

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}

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@end

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NSString *server_base = [NSString stringWithFormat:@

"%@/users/uploadResource.json"

, _server];

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ASINetworkQueue *queue = [[ASINetworkQueue alloc] init];

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ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:server_base]];

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[ASIHTTPRequest setShouldUpdateNetworkActivityIndicator: NO];

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[request setDelegate :self];

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[request setDidFinishSelector:@selector(sendCommentSucc:)];

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[request setDidFailSelector:@selector(sendCommentFail:)];

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// res 就是 需要上传图片文件的路径

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[request setFile:res forKey:@

"res"

];

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[queue addOperation:request];

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[queue go];