我的目的是利用canvas来实现矩形的绘制 但发现在真机调试的时候 fillRect函数绘制的矩形在安卓机上调试时无法显示 在苹果机上调试时可以显示

Page({

data:{

array:[1,2,3,4,5,6,7],

name:"leec"

},

onReady: function () {

var content = wx.createCanvasContext("second");

var draw_array = this.data.array;

var temp = "";

function Elements(index, number) {

content.setFillStyle('green');

content.fillRect(20 + index * 40, 260, 20, -number * 20);

temp += number;

content.fillText(temp, 25 + index * 40, 280);

temp = "";

}

var length = draw_array.length;

var value = 0;

for (var index = 0; index < length; ++index) {

value = draw_array[index];

Elements(index, value);

}

})