大连游戏产业不是很发达，最后，选择一个应用程序外包公司。积累的工作和学习过程中的一点业余生活微信体验，我想分享的游戏小朋友的爱。
在应用开发过程中会经常实用户上传头像的功能，在网上找了N多资料发现没有人详细介绍过该用cocos2d-x实现。这篇文章就来介绍一下怎样在Android和IOS平台上实现该功能。
先传一张完毕后的图片一饱眼福：= = 怎么不好用呢~
直接上代码：
头文件 ImagePicker.h
/**************************************************************************
* Copyright (c) 2015, pxbomb, All rights reserved. * File : ImagePicker.h
* Date : 2015/06/02 18:02
* Author : 田伟汉
* Email : wilhan.tian@gmail.com
* Depict : 图像选择器
**************************************************************************/
#ifndef _IMAGEPICKER_H_
#define _IMAGEPICKER_H_ #include "cocos2d.h" #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
#include "platform/android/jni/JniHelper.h"
#include <jni.h>
#endif // CC_PLATFORM_ANDROID /**
* 图像选择器
*/
class ImagePicker
{
public:
// 获取选择器单例
static ImagePicker* getInstance(); // 销毁
static void destoryInstance();
public:
// 显示本地相冊与相机选择器
void callImagePickerWithPhotoAndCamera(const std::function<void(std::string)>& callback); // 设置监听
void setListener(const std::function<void(std::string)>& callback); // 移除监听
void removeListener(); // 打开相冊
void openPhoto(); // 打开相机
void openCamera(); #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
// 设置AppController
void setViewController(void* viewController);
#endif // CC_PLATFORM_IOS protected:
// 初始化
bool init(); ImagePicker(); protected:
std::function<void(std::string)> m_callback;
static ImagePicker* s_instance; #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
void* m_viewController;
#endif // CC_PLATFORM_IOS }; #endif // _IMAGEPICKER_H_
实现文件 ImagePicker.cpp
#include "ImagePicker.h"
//--------------------------------------------------
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
#import "ImagePickerViewController.h"
#import "RootViewController.h"
#endif
//--------------------------------------------------
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
#define JAVA_CLASS "org/cocos2dx/cpp/ImagePicker"
#define JAVA_FUNC_OPEN_PHOTO "openPhoto"
#define JAVA_FUNC_OPEN_CAMERA "openCamera"
#endif
//--------------------------------------------------
USING_NS_CC;
//--------------------------------------------------
ImagePicker* ImagePicker::s_instance = NULL;
//--------------------------------------------------
ImagePicker* ImagePicker::getInstance()
{
if (s_instance == NULL)
{
s_instance = new ImagePicker();
}
return s_instance;
}
//--------------------------------------------------
void ImagePicker::destoryInstance()
{
CC_SAFE_DELETE(s_instance);
}
//--------------------------------------------------
ImagePicker::ImagePicker()
:m_callback(nullptr)
{
Director::getInstance()->getEventDispatcher()->addCustomEventListener("ImagePickerEvent", [=](EventCustom* eve)
{
std::string* path = (std::string*)eve->getUserData();
if (path && m_callback != nullptr)
{
m_callback(*path);
}
});
}
//--------------------------------------------------
void ImagePicker::callImagePickerWithPhotoAndCamera(const std::function<void(std::string)>& callback)
{
s_instance->init();
setListener(callback);
}
//--------------------------------------------------
void ImagePicker::setListener(const std::function<void(std::string)>& callback)
{
m_callback = callback;
}
//--------------------------------------------------
void ImagePicker::removeListener()
{
m_callback = nullptr;
}
//--------------------------------------------------
void ImagePicker::openPhoto()
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
ImagePickerViewController* imagePickerViewController = [[ImagePickerViewController alloc] initWithNibName:nil bundle:nil]; RootViewController* _viewController = (RootViewController*)m_viewController;
[_viewController.view addSubview:imagePickerViewController.view]; [imagePickerViewController localPhoto];
#endif #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
JniMethodInfo info;
bool ret = JniHelper::getStaticMethodInfo(info, JAVA_CLASS, JAVA_FUNC_OPEN_PHOTO,"()V");
if (ret)
{
info.env->CallStaticVoidMethod(info.classID, info.methodID);
}
#endif
}
//--------------------------------------------------
void ImagePicker::openCamera()
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
ImagePickerViewController* imagePickerViewController = [[ImagePickerViewController alloc] initWithNibName:nil bundle:nil]; RootViewController* _viewController = (RootViewController*)m_viewController;
[_viewController.view addSubview:imagePickerViewController.view]; [imagePickerViewController takePhoto];
#endif #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
JniMethodInfo info;
bool ret = JniHelper::getStaticMethodInfo(info, JAVA_CLASS, JAVA_FUNC_OPEN_CAMERA,"()V");
if (ret)
{
info.env->CallStaticVoidMethod(info.classID, info.methodID);
}
#endif
}
//--------------------------------------------------
bool ImagePicker::init()
{
cocos2d::Size visibleSize = Director::getInstance()->getVisibleSize(); //-------------------------------------
// 根层
//-------------------------------------
LayerColor* m_layer = LayerColor::create(Color4B(0, 0, 0, 125));
m_layer->retain();
//-------------------------------------
// button背景
//-------------------------------------
Sprite* sprite = Sprite::create("ImagePicker/bk.png");
sprite->setAnchorPoint(Vec2(0.5, 0));
sprite->setPosition(Vec2(visibleSize.width/2, 0));
m_layer->addChild(sprite);
//-------------------------------------
// button
//-------------------------------------
Menu* menu = Menu::create();
menu->setPosition(Vec2::ZERO);
m_layer->addChild(menu);
//-------------------------------------
MenuItemImage* btnPhoto = MenuItemImage::create("ImagePicker/ButtonPhoto.png", "ImagePicker/ButtonPhoto1.png", [=](Ref* p)
{
openPhoto();
});
btnPhoto->setAnchorPoint(Vec2(0.5, 1));
btnPhoto->setPosition(Vec2(visibleSize.width / 2, 280));
menu->addChild(btnPhoto);
//-------------------------------------
MenuItemImage* btnCamera = MenuItemImage::create("ImagePicker/ButtonCamera.png", "ImagePicker/ButtonCamera1.png", [=](Ref* p)
{
openCamera();
});
btnCamera->setAnchorPoint(Vec2(0.5, 1));
btnCamera->setPosition(btnPhoto->getPosition() + Vec2(0, -btnPhoto->getContentSize().height));
menu->addChild(btnCamera);
//-------------------------------------
MenuItemImage* btnCancel = MenuItemImage::create("ImagePicker/ButtonCancel.png", "ImagePicker/ButtonCancel1.png", [=](Ref* p)
{
float height = sprite->getContentSize().height; MoveBy* move = MoveBy::create(0.2, Vec2(0, -height));
sprite->runAction(move);
menu ->runAction(move->clone()); Sequence* seq = Sequence::createWithTwoActions(FadeOut::create(0.2), RemoveSelf::create());
m_layer->runAction(seq);
});
btnCancel->setAnchorPoint(Vec2(0.5, 1));
btnCancel->setPosition(btnCamera->getPosition() + Vec2(0, -btnCamera->getContentSize().height - 20));
menu->addChild(btnCancel);
//-------------------------------------
// 文字
//-------------------------------------
Label* textPhoto = Label::createWithSystemFont("Photo", "", 24);
textPhoto->setPosition(btnPhoto->getContentSize() / 2);
textPhoto->setTextColor(Color4B::BLACK);
btnPhoto->addChild(textPhoto);
//-------------------------------------
Label* textCamera = Label::createWithSystemFont("Camera", "", 24);
textCamera->setPosition(btnPhoto->getContentSize() / 2);
textCamera->setTextColor(Color4B::BLACK);
btnCamera->addChild(textCamera);
//-------------------------------------
Label* textCancel = Label::createWithSystemFont("Cancel", "", 24);
textCancel->setPosition(btnPhoto->getContentSize() / 2);
textCancel->setTextColor(Color4B::BLACK);
btnCancel->addChild(textCancel);
//-------------------------------------
// 准备显示
//-------------------------------------
Director::getInstance()->getRunningScene()->scheduleOnce([=](float time)
{
Director::getInstance()->getRunningScene()->addChild(m_layer, INT_MAX);
m_layer->release(); float height = sprite->getContentSize().height; sprite->setPositionY(sprite->getPositionY() - height);
menu ->setPositionY(menu->getPositionY() - height); MoveBy* move = MoveBy::create(0.3, Vec2(0, height));
sprite->runAction(move);
menu ->runAction(move->clone()); m_layer->setOpacity(0);
m_layer->runAction(FadeTo::create(0.2, 125)); }, 0.1, "ImagePickerScheduleOnce");
//-------------------------------------
// 截断事件
//-------------------------------------
EventListenerTouchOneByOne* touchEvent = EventListenerTouchOneByOne::create();
touchEvent->setSwallowTouches(true);
touchEvent->onTouchBegan = [=](Touch* touch, Event* eve)
{
if(sprite->getBoundingBox().containsPoint(touch->getLocation()))
return true; float height = sprite->getContentSize().height; MoveBy* move = MoveBy::create(0.2, Vec2(0, -height));
sprite->runAction(move);
menu ->runAction(move->clone()); Sequence* seq = Sequence::createWithTwoActions(FadeOut::create(0.2), RemoveSelf::create());
m_layer->runAction(seq); return true;
};
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(touchEvent, sprite);
//-------------------------------------
return true;
}
//--------------------------------------------------
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
void ImagePicker::setViewController(void* viewController)
{
m_viewController = viewController;
}
#endif
//--------------------------------------------------
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
extern "C"
{
void Java_org_cocos2dx_cpp_ImagePicker_onImageSaved(JNIEnv* env, jobject thiz, jstring path)
{
std::string strPath = JniHelper::jstring2string(path);
Director::getInstance()->getEventDispatcher()->dispatchCustomEvent("ImagePickerEvent", &strPath);
}
}
#endif
//--------------------------------------------------
为project加入资源：略
(图片资源和代码下载地址：点击打开链接)
分平台实现：
------------------------------------------
Android
------------------------------------------
1. 打开Eclipse在org.cocos2x.cpp(增加你没改过的话)包名下新建“ImagePicker.java”文件
ImagePicker.java详细代码例如以下：
public class ImagePicker{
<span style="white-space:pre"> </span>public static final int NONE = 0;
public static final int PHOTOHRAPH = 1; // 拍照
public static final int PHOTOZOOM = 2; // 缩放
public static final int PHOTORESOULT = 3; // 结果
public static final String IMAGE_UNSPECIFIED = "image/*";
private static ImagePicker instance = null;
private static Activity activity = null;
public static native void onImageSaved(String path);
public static ImagePicker getInstance(){
if(instance == null){
instance = new ImagePicker();
}
return instance;
}
// 初始化
public void init(Activity activity){
ImagePicker.activity = activity;
}
// 打开相冊
static public void openPhoto(){
Intent intent = new Intent(Intent.ACTION_PICK, null);
intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_UNSPECIFIED);
activity.startActivityForResult(intent, PHOTOZOOM);
}
// 打开相机
static public void openCamera(){
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(activity.getFilesDir(), "@cc_cameraCache.jpg")));
activity.startActivityForResult(intent, PHOTOHRAPH);
}
// 回调
public void onActivityResult(int requestCode, int resultCode, Intent data){
if (resultCode == NONE)
return;
// 拍照
if (requestCode == PHOTOHRAPH) {
File picture = new File(activity.getFilesDir() + "/@cc_cameraCache.jpg");
startPhotoZoom(Uri.fromFile(picture));
}
if (data == null)
return;
// 读取相冊缩放图片
if (requestCode == PHOTOZOOM) {
startPhotoZoom(data.getData());
}
// 处理结果
if (requestCode == PHOTORESOULT) {
Bundle extras = data.getExtras();
if (extras != null) {
Bitmap photo = extras.getParcelable("data");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);
// XXX/@ci_8888-8888-8888-8888.jpg
String path = activity.getFilesDir() + "/@ci_" + UUID.randomUUID().toString() + ".jpg";
saveMyBitmap(path, photo);
// 通知C++层已保存图片 并返回路径
onImageSaved(path);
}
}
}
public void startPhotoZoom(Uri uri) {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, IMAGE_UNSPECIFIED);
intent.putExtra("crop", "true");
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("outputX", 100);
intent.putExtra("outputY", 100);
intent.putExtra("return-data", true);
activity.startActivityForResult(intent, PHOTORESOULT);
}
public void saveMyBitmap(String filePath, Bitmap mBitmap){
File f = new File(filePath);
try {
f.createNewFile();
} catch (IOException e) {
}
FileOutputStream fOut = null;
try {
fOut = new FileOutputStream(f);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
mBitmap.compress(Bitmap.CompressFormat.JPEG, 70, fOut);
try {
fOut.flush();
} catch (IOException e) {
e.printStackTrace();
}
try {
fOut.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
2. 在Android入口进行初始化
打开AppActivity.java文件，复写OnCreate()与onActivityResult()方法。
在OnCreate方法中对我们的类初始化：“ImagePicker.getInstance().init(this);”
在onActivityResult()中将回调參数传递到ImagePicker中：“ImagePicker.getInstance().onActivityResult(requestCode, resultCode, data);”
AppActivity.java详细代码：
public class AppActivity extends Cocos2dxActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
ImagePicker.getInstance().init(this);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
ImagePicker.getInstance().onActivityResult(requestCode, resultCode, data);
}
}
3. 最后在AndroidManifest.xml增加訪问相机权限"<uses-permission android:name="android.permission.CAMERA"/>"
------------------------------------------
IOS
------------------------------------------
1. 将開始创建的ImagePicker.cpp文件后缀名改为.mm文件。
2. 在proj.ioc_mac/ios目录下创建两个文件。分别为ImagePickerViewController.h、ImagePickerViewController.mm
ImagePickerViewController.h详细代码：
#import <UIKit/UIKit.h> @interface ImagePickerViewController : UIViewController<UINavigationControllerDelegate, UIImagePickerControllerDelegate>
{
NSString* filePath;
} // 打开本地相冊
- (void)localPhoto; // 打开相机
- (void)takePhoto; @end
ImagePickerViewController.mm详细代码：
#import "ImagePickerViewController.h"
#import "cocos2d.h" @interface ImagePickerViewController () @end @implementation ImagePickerViewController - (void)viewDidLoad {
[super viewDidLoad]; //[self localPhoto];
} - (void)viewDidUnload
{
[super viewDidUnload];
} - (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
} -(void)localPhoto{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
picker.allowsEditing = YES;
//[self presentModalViewController:picker animated:YES];
[self presentViewController:picker animated:YES completion:^(void){
NSLog(@"Imageviewcontroller is presented");
}];
[picker release]; NSLog(@"-(void)localPhoto();");
} - (void)takePhoto{
UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
UIImagePickerController* picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
//设置拍照后的图像可编辑
picker.allowsEditing = YES;
picker.sourceType = sourceType;
[picker release];
[self presentModalViewController:picker animated:YES];
}
else{
NSLog(@"模拟器中无法打开照相机，请在真机中调试");
}
} - (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"];
UIImage* image = [info objectForKey:@"UIImagePickerControllerEditedImage"];
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目录中
NSString * DocumentsPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]; //文件管理器
NSFileManager *fileManager = [NSFileManager defaultManager]; //生成唯一字符串
NSString* uuid = [[NSUUID UUID] UUIDString]; //文件名称
NSString* fileName = [NSString stringWithFormat:@"/%@.png", uuid]; //把刚刚图片转换的data对象拷贝至沙盒中 并保存为XXXXXXXX-XXXX-XXXX....XXXX.png
[fileManager createDirectoryAtPath:DocumentsPath withIntermediateDirectories:YES attributes:nil error:nil];
[fileManager createFileAtPath:[DocumentsPath stringByAppendingString:fileName] contents:data attributes:nil]; //得到选择后沙盒中图片的完整路径
filePath = [[NSString alloc]initWithFormat:@"%@%@", DocumentsPath, fileName]; //关闭相冊界面
[picker dismissModalViewControllerAnimated:YES]; std::string strFilePath = [filePath UTF8String];
cocos2d::Director::getInstance()->getEventDispatcher()->dispatchCustomEvent("ImagePickerEvent", &strFilePath);
} } - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
NSLog(@"您取消了选择图片");
[picker dismissModalViewControllerAnimated:YES];
} @end
3. 改动原projectAppController.mm文件，增加一行“ImagePicker::getInstance()->setViewController(_viewController);”用来初始化。
AppController.mm详细代码：
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
cocos2d::Application *app = cocos2d::Application::getInstance();
app->initGLContextAttrs();
cocos2d::GLViewImpl::convertAttrs();
// Override point for customization after application launch.
// Add the view controller's view to the window and display.
window = [[UIWindow alloc] initWithFrame: [[UIScreen mainScreen] bounds]];
// Init the CCEAGLView
CCEAGLView *eaglView = [CCEAGLView viewWithFrame: [window bounds]
pixelFormat: (NSString*)cocos2d::GLViewImpl::_pixelFormat
depthFormat: cocos2d::GLViewImpl::_depthFormat
preserveBackbuffer: NO
sharegroup: nil
multiSampling: NO
numberOfSamples: 0 ];
// Use RootViewController manage CCEAGLView
_viewController = [[RootViewController alloc] initWithNibName:nil bundle:nil];
_viewController.wantsFullScreenLayout = YES;
_viewController.view = eaglView;
//----------------------------------
// 初始化ImagePicker
//----------------------------------
ImagePicker::getInstance()->setViewController(_viewController);
//----------------------------------
// Set RootViewController to window
if ( [[UIDevice currentDevice].systemVersion floatValue] < 6.0)
{
// warning: addSubView doesn't work on iOS6
[window addSubview: _viewController.view];
}
else
{
// use this method on ios6
[window setRootViewController:_viewController];
}
[window makeKeyAndVisible];
[[UIApplication sharedApplication] setStatusBarHidden:true];
// IMPORTANT: Setting the GLView should be done after creating the RootViewController
cocos2d::GLView *glview = cocos2d::GLViewImpl::createWithEAGLView(eaglView);
cocos2d::Director::getInstance()->setOpenGLView(glview);
app->run();
return YES;
}
OK。接下来就是在C++代码中调用了，你仅仅须要在想使用头像选择器的时候，调用这一行代码：
ImagePicker::getInstance()->callImagePickerWithPhotoAndCamera([=](std::string path)
{
//做你想做的事情
});
忘了说明，參数path就是你已经选择并编辑后。图片的真实路径。
咳咳，请各位大神轻喷，喜欢游戏的程序孩纸伤不起~别说，回家LOL过去的~
版权声明：本文博主原创文章，博客，未经同意不得转载。