我是一名iOS开发人员,但我也负责更新我们公司的Android应用程序(所以我的安卓体验很少)Android应用程序目前从raw加载PDF,然后在另一个安装在android上的pdf阅读器应用程序中显示它们。 ..但我想从互联网上获取pdf。
这是用于显示本地存储的pdf的代码。
if (mExternalStorageAvailable==true && mExternalStorageWriteable==true)
{
// Create a path where we will place our private file on external
// storage.
Context context1 = getApplicationContext();
File file = new File(context1.getExternalFilesDir(null).toString() + "/pdf.pdf");
URL url = new URL("https://myurl/pdf.pdf");
URLConnection urlConnection = url.openConnection();
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
OutputStream os = new FileOutputStream(file);
try {
byte[] data = new byte[in.available()];
in.read(data);
os.write(data);
Uri path = Uri.fromFile(file);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(path, "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
} catch (IOException e) {
// Unable to create file, likely because external storage is
// not currently mounted.
Log.w("ExternalStorage", "Error writing " + file, e);
Context context2 = getApplicationContext();
CharSequence text1 = "PDF File NOT Saved";
int duration1 = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context2, text1, duration1);
toast.show();
} finally {
in.close();
os.close();
}
}
最终,pdf将来自一个网站,该网站将要求在下载PDF之前向其发送HTML帖子请求。我想我将能够弄清楚HTML帖子,但是现在如何从互联网上下载PDF并显示它。我尝试将URI更改为指向该位置,但这不起作用,或者我的结构不正确。
另外请注意出于安全原因,我不想使用Google查看器和网页浏览来显示此内容
答案 0 :(得分:1)
您只需要从远程服务器读取即可。我会尝试类似的事情:
URL url = new URL("http://www.mydomain.com/slug");
URLConnection urlConnection = url.openConnection();
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
try {
readStream(in); // Process your pdf
} finally {
in.close();
}
您可能还想查看AndroidHttpClient课程以直接发出http请求(在您的应用程序中获取GET或POST)。