Android项目中访问assets文件夹的方法是什么？
我访问放置在项目文件夹（例如“资产”）中的 XML 文件，以打开文件并从文件中读取数据。
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = factory.newDocumentBuilder();
InputStream iS = this.getAssets().open("myFile.xml");
Document doc = docBuilder.parse(iS);
但是如果我想编辑该文件，我找不到保存它的路径。
TransformerFactory transfac = TransformerFactory.newInstance();
Transformer trans = transfac.newTransformer();
//create string from xml tree
StringWriter sw = new StringWriter();
StreamResult result = new StreamResult(sw);
DOMSource source = new DOMSource(doc);
trans.transform(source, result);
String xmlString = sw.toString();
OutputStream f0;
byte buf[] = xmlString.getBytes();
**f0 = new FileOutputStream("/assets/wines.xml");**
//f0 = new FileOutputStream("file:///assets/wines.xml");
for(int i=0;i<buf .length;i++) {
f0.write(buf[i]);
}
f0.close();
buf = null;
我总是在以下行获得 FileNotFoundException：
f0 = new FileOutputStream("/assets/wines.xml");
有什么想法吗？谢谢！
I access to an XML file placed in a project folder (for instance 'assets') for open and read data from file.
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = factory.newDocumentBuilder();
InputStream iS = this.getAssets().open("myFile.xml");
Document doc = docBuilder.parse(iS);
but If I want to edit the file, I can't find the path to save it.
TransformerFactory transfac = TransformerFactory.newInstance();
Transformer trans = transfac.newTransformer();
//create string from xml tree
StringWriter sw = new StringWriter();
StreamResult result = new StreamResult(sw);
DOMSource source = new DOMSource(doc);
trans.transform(source, result);
String xmlString = sw.toString();
OutputStream f0;
byte buf[] = xmlString.getBytes();
**f0 = new FileOutputStream("/assets/wines.xml");**
//f0 = new FileOutputStream("file:///assets/wines.xml");
for(int i=0;i<buf .length;i++) {
f0.write(buf[i]);
}
f0.close();
buf = null;
I obtain always a FileNotFoundException at line:
f0 = new FileOutputStream("/assets/wines.xml");
Any ideas? Thanks!
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评论（2）
如果您尝试
编辑或写入文件到资产或原始文件夹。我想这是不可能的。 这是不可能的If you are trying to
edit or writefile toassets or raw folder. I guess it is not possible. It cannot be doneBettery 尝试将其保存到 SD 卡或内部存储
使用
File sdDir = [Environment.getExternalStorageDirectory()][1];获取 sdcard 路径。并且不要忘记给予许可
Bettery try saving it to sd card or internal storage
Use
File sdDir = [Environment.getExternalStorageDirectory()][1];to get the sdcard path.And don't forget to give permission