上传图片模块

apicloud代码部分

function UpdateAvatar() 
		{
			api.actionSheet({
				cancleTitle : "取消",
				buttons : ["拍照", "打开相册"]
			}, function(ret, err) {
				if (ret.buttonIndex == 3) {
					return;
				}
				var sourceType = (ret.buttonIndex == 1) ? "camera" : "album";
				api.getPicture({
					sourceType : sourceType,
					destinationType:"url",
					allowEdit : true,
					quality : 70,
					targetWidth : 100,
					targetHeight : 100
					
				}, function(ret, err) {
					if (ret.data) {
						var img=ret.data;
						var uid=$api.getStorage("user").id;
						api.ajax({
							url : "http://www.xxxxcom.cn/index.php?g=Osapp&m=Mine&a=updateAvatar",
							method : "post",
							cache : false,
							timeout : 30,
							dataType : "json",
							data : {
								files : {upfile : ret.data},
								values:{uid:uid}
							}
						}, function(ret, err) {
							if (ret.msg==1) {
								$api.attr($api.byId("avatarImg"), "src", img);
								var user = $api.getStorage("user");
								user.avatar = img;
								$api.setStorage("user", user);
							} else {
								alert("上传失败");								
							}
						});
					}else{
						alert($api.jsonToStr(err));
					}
				});
			});
		}

后台处理数据部分

public function updateAvatar(){
	     $uid=$_POST["uid"];
	     $upload = new ThinkUpload();// 实例化上传类
	     $upload->maxSize   =     3145728 ;// 设置附件上传大小
	     $upload->exts      =     array("jpg", "gif", "png", "jpeg");// 设置附件上传类型
	     $upload->rootPath  =     "./".C("UPLOADPATH"); // 设置附件上传根目录
	     $upload->savePath  =     "./avatar/"; // 设置附件上传（子）目录
	     $info   =   $upload->uploadOne($_FILES["upfile"]);
	     if(!$info) {// 上传错误提示错误信息
		       $arr=array("msg"=>0);
		       echo json_encode($arr);
	     }else{// 上传成功
		        $avatar=$info["savename"];
		        $user_model=M("users");
		        $ret=$user_model->find($uid);
		        $old_img=$ret["avatar"];
		        $result=$user_model->where(array("id"=>$uid))->save(array("avatar"=>$avatar));
		        if($result){
		            	// 删除旧的头像
			         sp_delete_avatar($old_img);
			         $arr=array("msg"=>1);
			         echo json_encode($arr);
		        }   
	     }
	}