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var img = new Image();
img.onload = function(data){
var obj ={
uri:src,
width:data.path["0"].width,
height:data.path["0"].height
});
}
img.src = src;
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在android设备中可以得到图片的宽高 在iso设备中img.onload 返回结果是 isTrusted:true 由于使用的是阿里云oss服务 http://image-demo.oss-cn-hangzhou.aliyuncs.com/example.jpg?x-oss-process=image/info
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{
"FileSize": {"value": "21839"},
"Format": {"value": "jpg"},
"ImageHeight": {"value": "267"},
"ImageWidth": {"value": "400"}
}
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最终结果：
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getImgInfo:function(srcArr,newSrcArr){
var arr = [];
var len = srcArr.length;
var num = 0;
return new Promise(function(resolve,reject){
srcArr.forEach(function(src,index,array){
if($.device.ios){
axios.get(newSrcArr[index]+"?x-oss-process=image/info").then(function(r){
vPage.homework.body = JSON.stringify(r.data.ImageHeight.value);
arr.push({
uri:newSrcArr[index],
width:r.data.ImageWidth.value,
height:r.data.ImageHeight.value
});
num += 1;
if(num == len){
resolve(arr)
}
})
}else{
var img = new Image();
img.onload = function(data){
arr.push({
uri:newSrcArr[index],
width:data.path["0"].width,
height:data.path["0"].height
});
num += 1;
if(num == len){
resolve(arr)
}
}
img.src = src;
}
})
})
}
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