从URL Android的可绘制图片 [英] Android Drawable Images from URL

问题描述

我是presently使用下面这段code加载的图像，绘制对象形成一个网址。

 绘制对象drawable_from_url（URL字符串，字符串src_name）
抛出java.net.MalformedURLException，产生java.io.IOException {
        返回Drawable.createFromStream（（（java.io.InputStream中的）新的java.net.URL（URL）.getContent（）），src_name）;

}
 

这code工程完全按照想要的，但似乎与它的兼容性问题。在1.5版本，它抛出一个 FileNotFoundException异常时，我给它一个网址。在2.2，考虑到完全相同的网址，它工作正常。下面的网址是一个示例输入我给这个函数。

<$p$p><$c$c>http://bks6.books.google.com/books?id=aH7BPTrwNXUC&printsec=frontcover&img=1&zoom=5&edge=curl&sig=ACfU3U2aQRnAX2o2ny2xFC1GmVn22almpg

我将如何加载图像的方式，全线兼容，从一个网址？

解决方案

解决它自己。我用下面的code加载它作为一个位图。

 位图drawable_from_url（字符串URL）抛出java.net.MalformedURLException，产生java.io.IOException {
    位图X;

    HttpURLConnection的连接=（HttpURLConnection类）新的网址（URL）.openConnection（）;
    connection.setRequestProperty（用户代理，Mozilla的/ 4.0）;

    connection.connect（）;
    输入的InputStream = connection.getInputStream（）;

    X = BitmapFactory.de codeStream（输入）;
    返回X;
}
 

这是同样重要的是增加了用户代理，如googlebooks拒绝访问，如果它不存在

I am presently using the following piece of code to load in images as drawable objects form a URL.

Drawable drawable_from_url(String url, String src_name) 
throws java.net.MalformedURLException, java.io.IOException {
        return Drawable.createFromStream(((java.io.InputStream)new java.net.URL(url).getContent()), src_name);

}

This code works exactly as wanted, but there appears to be compatibility problems with it. In version 1.5, it throws a FileNotFoundException when I give it a URL. In 2.2, given the exact same URL, it works fine. The following URL is a sample input I am giving this function.

http://bks6.books.google.com/books?id=aH7BPTrwNXUC&printsec=frontcover&img=1&zoom=5&edge=curl&sig=ACfU3U2aQRnAX2o2ny2xFC1GmVn22almpg

How would I load in images in a way that is compatible across the board from a URL?

解决方案

Solved it myself. I loaded it in as a bitmap using the following code.

Bitmap drawable_from_url(String url) throws java.net.MalformedURLException, java.io.IOException {
    Bitmap x;

    HttpURLConnection connection = (HttpURLConnection)new URL(url) .openConnection();
    connection.setRequestProperty("User-agent","Mozilla/4.0");

    connection.connect();
    InputStream input = connection.getInputStream();

    x = BitmapFactory.decodeStream(input);
    return x;
}

It was also important to add in the user agent, as googlebooks denies access if it is absent

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