HOWTO获得与ACTION_OPEN_DOCUMENT_TREE意图真实路径。棒棒堂API 21安培; 22 [英] howto get the real path with ACTION_OPEN_DOCUMENT_TREE Intent. Lollipop API 21 & 22

问题描述

我的应用程序下载和解压的文件在特定文件夹：

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);

随着新推出ACTION_OPEN_DOCUMENT_TREE意图，我想提供用户选择该文件夹。

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

在测试中我的onActivityResult接收的值，我​​得到这样 A路径/树/主：mynewfolder ，这是不喜欢/ SD卡/ mynewfolder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);

我的解压方法需要真正的路径：

My unzip method need the real path:

ZipFile zipFile = new ZipFile(realpath);

我如何获得真正的路径如/ SD卡/从提供的URI在棒棒堂（API 21安培; 22）mynewfolder？

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得到真正路径的过程是和以前一样，但有一点增加：

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);

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

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