将base64编码的字符串存储为文件

Question

我有一个Web服务，它返回一个PDF文件的base64编码字符串。

我想将此文件保存到SD卡。但是当我尝试这样做时，adobe reader会告诉我该文件已损坏。显然我没有妥善保存它。

byte[] pdfAsBytes = Base64.decode(resultsRequestSOAP.toString(), 0);

File filePath = new File(Environment.getExternalStorageDirectory()+"/braodcasts.pdf");
FileOutputStream os = new FileOutputStream(filePath, true);
os.write(pdfAsBytes);
os.close();

resultsRequestSOAP.toString()看起来像这样：

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

这只是一个片段！

由于

Answer 1

也许你可以在关闭之前刷新FileOutputStream。

os.write(pdfAsBytes);
os.flush();
os.close();

Answer 2

看起来你正在打开它以便追加。是否已存在您要附加该名称的文件？