var ksbridge = {
			kscb: {},
			to_flutter: function(m, p, c) {
				var ps = {
					method: m
				};
				if (p != undefined) {
					ps.params = p;
				}
				if (c != undefined) {
					ps.callback = c;
				}
				return JSON.stringify(ps);
			},
			call: function(method, params, callback) {
				if ("function" == typeof params) {
					callback = params;
					params = undefined;
				}
				var m = method;
				var p = undefined;
				var c = undefined;
				if ("undefined" == typeof params) {} else {
					p = params;
				}

				//有回调
				if (callback) {
					//注册回调
					var key = "_" + new Date().getTime() + "_" + Object.keys(ksbridge.kscb).length;
					ksbridge.kscb[key] = callback;
					c = "ksbridge.kscb." + key;
				}

				var callStr = m + "(";
				if (p != undefined) {
					callStr += p;
				}

				if (c != undefined) {
					if (callStr.endsWith("("))
						callStr += c;
					else {
						callStr += "," + c;
					}
				}

				callStr += ")";

				yestv.postMessage(ksbridge.to_flutter(m, p, c));

				//非flutter
				// 				console.log(callStr);
				// 				try {
				// 					eval(callStr);
				// 				} catch (e) {
				// 
				// 				}
			}
		};