function init() 

{

var canvas = wx.createCanvas();

Laya.init(400, 400, canvas);

wx.setPreferredFramesPerSecond(1);

requestAnimationFrame(draw);

}

function draw() 

{

Laya.stage.draw();

requestAnimationFrame(draw);

}

var Laya =

{

init: function (width, height, canvas) {

var context = canvas.getContext('2d');

canvas.width = width;

canvas.height = height;

this.stage = new Stage();

this.stage.init(width, height, context);

}

}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

function Stage() 

{

this.width = 0;

this.height = 0;

this.context = null;

this.init = function (width, height, context) { this.width = width; this.height = height; this.context = context; };

this.draw = function () { 

console.log("123")

this.context.clearRect(0, 0, this.width, this.height);

this.context.fillStyle = "#fff";

this.context.fillRect(0, 0, this.width, this.height);

this.context.font = "20px Times New Roman";

this.context.fillStyle = "blue";

this.context.fillText("Sample String", 5, 30);

this.context.shadowOffsetX = 2;

this.context.shadowOffsetY = 2;

this.context.shadowBlur = 20;

this.context.shadowColor = "#555";

}

}

init();

这段代码在模拟器中能展示阴影效果，在小程序真机中展示不出来