这东西会者不难，难者不会，网上的资料也比较分散，分享整理下，顺便增强巩固
选取相册（多选）【ios】
由于IOS自带的imagePickerController不支持多选，所以这里选用了ELCImagePickerController
GitHub:ELCImagePicker
下载后将ELCImagePicker文件夹拖入Xcode
在info.plist 增加2个权限
Privacy - Photo Library Additions Usage Description 否允许此APP保存图片到相册？
Privacy - Photo Library Usage Description 是否允许此APP使用相册？
[流程]
游戏中点击按钮-调用oc方法-oc中拉起相册-用户选择-回调oc-调用js-游戏内逻辑操作
1.调用oc方法 xxx.js
if(cc.sys.OS_IOS == cc.sys.os)
{
jsb.reflection.callStaticMethod("RootViewController", "getImgData");
}
会调用RootViewController.mm 的 getImgData静态方法2.拉起相册 RootViewController.mm
1⃣️引入头文件 与 设置代理
#import "ELCImagePickerController.h"
@interface RootViewController () <ELCImagePickerControllerDelegate,UINavigationControllerDelegate>
@property(nonatomic,strong) ELCImagePickerController *elcPicker;
@end
static ELCImagePickerController *selectImage = nullptr;2⃣️新增代理函数
#pragma mark - ELCImagePickerControllerDelegate Methods
- (void)elcImagePickerController:(ELCImagePickerController *)picker didFinishPickingMediaWithInfo:(NSArray *)info
{
NSLog(@"Selected assets:");
// NSLog(@"%@", assets);//
[[[UIApplication sharedApplication] keyWindow].rootViewController dismissViewControllerAnimated:YES completion:NULL];
[RootViewController saveImage:info];
}
- (void)elcImagePickerControllerDidCancel:(ELCImagePickerController *)picker
{
NSLog(@"Canceled.");
[[[UIApplication sharedApplication] keyWindow].rootViewController dismissViewControllerAnimated:YES completion:NULL];
}
3⃣️初始化
在RootViewController.mm 的viewDidLoad初始化
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
_elcPicker=[[ELCImagePickerController alloc] initImagePicker];
_elcPicker.delegate = self;
selectImage = _elcPicker;
}4⃣️使用
//游戏中调用的方法
+(void) getImgData {
[[RootViewController alloc] init];
[[RootViewController alloc] selectPhoto]; //打开相册
}
-(void)selectPhoto{
selectImage.maximumImagesCount = 9;//最多选择9张
selectImage.imagePickerDelegate = self;
selectImage.returnsOriginalImage = NO; //Only return the fullScreenImage, not the fullResolutionImage
selectImage.returnsImage = YES; //Return UIimage if YES. If NO, only return asset location information
selectImage.onOrder = NO; //For single image selection, do not display and return order of selected images
// selectImage.mediaTypes = @[(NSString *)kUTTypeImage]; //Supports image and
UIViewController *topRootViewController = [[UIApplication sharedApplication] keyWindow].rootViewController;
[topRootViewController presentViewController:selectImage animated:YES completion:nil];
}到这里后会拉起相册，用户操作后会跳到上面的代理函数didFinishPickingMediaWithInfo
5⃣️处理
需要 #include “cocos/scripting/js-bindings/jswrapper/SeApi.h”
+(void)saveImage:(NSArray *)info
{
std::string allImage = "";
for (NSDictionary *dict in info) {
UIImage* image=[dict objectForKey:UIImagePickerControllerOriginalImage];//UIImagePickerControllerEditedImage。//UIImagePickerControllerOriginalImage
NSString* uuid = [[NSUUID UUID] UUIDString];
NSString* fileName;
fileName = [uuid stringByAppendingFormat:@".png"];
std::string strFileName = [fileName UTF8String];
std::string newImgPath = cocos2d::FileUtils::getInstance()->getWritablePath() + strFileName;
[UIImagePNGRepresentation(image) writeToFile:[NSString stringWithFormat:@"%s",newImgPath.c_str()] atomically:YES];//保存图片到应用内部，才能用 cc.loader.load 下载
allImage = allImage + strFileName + ",";//图片名字用逗号分隔，传入js后再处理
}
// NSString *log = [NSString stringWithCString:allImage.c_str()
// encoding:[NSString defaultCStringEncoding]];
//
// NSLog(@"imgFilePath assets: ============ %@" ,log);
//调用js
std::string jsCallStr = cocos2d::StringUtils::format("window.onSelectPhotoBack(\"%s\");", allImage.c_str());
se::ScriptEngine::getInstance()->evalString(jsCallStr.c_str());
}到这步我们就把选择的图片写到应用本地，然后把图片名字传回js啦，剩下的就是到js load 后使用
6⃣️使用
var self = this;
window.onSelectPhotoBack = function (photoPath) {
console.log("onSelectPhotoBack = " + photoPath)
setTimeout(() => {
self.list = [];
var sp = photoPath.split(","); //分隔，得到图片名字数组list
for (var i = 0; i < sp.length; i++) {
if(sp[i] == undefined || sp[i] == "") continue;
self.list.push(sp[i]);
}
Global.eventMgr.dispatchEvent({
name: Global.config.CustomEvent.PHOTO_VIEW_REFRESH
});
}, 500)
};
//单个使用
loadRes(url) {
var self = this;
url = url.replace(/\s+/g, "");
if (cc.sys.OS_IOS == cc.sys.os) {
var dirpath = jsb.fileUtils.getWritablePath();
var filepath = url;
cc.loader.load(dirpath + filepath, function (err, tex) {
if (err) {
cc.error(err);
} else {
var frame = new cc.SpriteFrame(tex);
self.getComponent(cc.Sprite).spriteFrame = frame;
}
});
}
},
});
【Android】 晚点再写 //todo
