如何使用ACTION_OPEN_DOCUMENT_TREE Intent获得真实路径? [英] How to get the real path with ACTION_OPEN_DOCUMENT_TREE Intent?

问题描述

我的应用下载并解压缩特定文件夹中的文件:

My app downloads and unzips a file in a specific folder:

output = new FileOutputStream(realpath, true);
output.write(buffer, 0, bytesRead);

ZipFile zipFile = new ZipFile(realpath);

使用新引入的ACTION_OPEN_DOCUMENT_TREE Intent，我想为用户提供选择该文件夹的方法.

With the new introduced ACTION_OPEN_DOCUMENT_TREE Intent, I would like to offer the user to choose that folder.

测试onActivityResult中收到的值时，我得到的路径类似于/tree/primary:mynewfolder，而不是像/sdcard/mynewfolder这样的物理真实路径.

When testing the values received in my onActivityResult, I get a Path like /tree/primary:mynewfolder, which is not the physical real path like /sdcard/mynewfolder.

Uri treeUri = data.getData();
String sPath = treeUri.getPath();
Log.v("Path from Tree ", sPath);

我的解压缩方法需要真实路径:

My unzip method need the real path:

ZipFile zipFile = new ZipFile(realpath);

如何从Lollipop(API 21& 22)中提供的URI中获取诸如/sdcard/mynewfolder之类的真实路径?

How do I get the real path like /sdcard/mynewfolder from the provided URI in Lollipop (API 21 & 22)?

推荐答案

从URI获取真实路径的过程与以前相同，但有一点点补充:

Process of getting real Path from URI is same as before, but with a little addition:

Uri uri = data.getData();
Uri docUri = DocumentsContract.buildDocumentUriUsingTree(uri, 
                        DocumentsContract.getTreeDocumentId(uri));
String path = getPath(this, docUri);

具有中间方法的getPath()方法的要点可以在这里找到: getPath()

The gist of getPath() method with intermediate methods can be found here: getPath()

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