图像从浏览器保存到手机图库 [英] Save an image to a mobile phone gallery from a browser

问题描述

所以，这似乎不太可能纯粹从安全角度考虑，但我需要支付我的基地。有没有人碰到一个方法，在浏览器用户的画廊保存图像？在这种情况下，我专门谈从网站提供的JavaScript（不PhoneGap的）。

So this seems unlikely purely from a security point of view, but I need to cover my bases. Has anyone come across a method for saving an image in a browser to the user's gallery? In this case, I'm specifically talking about from site served javascript (not phonegap).

虽然我知道你可以点击并按住图片保存，我喜欢一个按钮，我们的技术不太倾向于用户。

While I know you can tap and hold on the image to save, I'd love a button for our less technically inclined users.

电话生态系统是多样的，所以任何手机会为我工作。我只是好奇，如果可能的话。

The phone ecosystem is diverse, so any phone would work for me. I'm just curious if it's possible.

一些尝试：

工程于桌面上，手机链，通过（Android版）

<a href="logo.png" download="logo.png">
    <img src="logo.png" alt="">
</a>

挂起点击时（Android版）

<一个href=\"http://stackoverflow.com/questions/7951326/save-image-to-users-disk-using-javascript/7952401#7952401\">save图像用户的磁盘使用javascript

推荐答案

如何

function save(){
    document.addEventListener("deviceready", onDeviceReady, false);
}

function onDeviceReady() {
    window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail);
}

function gotFS(fileSystem) {
    fileSystem.root.getFile("pic.jpg", {create: true, exclusive: false}, gotFileEntry, fail);
}

function gotFileEntry(fileEntry) {
    fileEntry.createWriter(gotFileWriter, fail);
}

function gotFileWriter(writer) {

    var photo = document.getElementById("image");
    writer.write(photo.value);

}

function fail(error) {
    console.log(error.code);
}

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