从SD卡中的Andr​​oid读取特定文件 [英] reading a specific file from sdcard in android

问题描述

如何读取SD卡的特定文件。我已经推入SD卡文件通过DDMS，我想读它，虽然这样，但是这让我异常。有谁能够告诉我如何准确地指向在该文件？

我的code是这样的。

 字符串路径= Environment.getExternalStorageDirectory（）getAbsolutePath（）。
的FileInputStream的IStream =新的FileInputStream（路径）;
 

解决方案

您正试图读取目录......你需要什么文件！做这样的事......那么，你可以根据需要读取该文件。

 文件DIR = Environment.getExternalStorageDirectory（）;
文件yourFile =新的文件（目录，路径/到/的/文件/内/ / sdcard.ext）;
 

how to read a specific file from sdcard. i have pushed the file in sdcard through DDMS and i am trying to read it though this way but this give me exception. can anybody tell me how to point exactly on that file?

my code is this.

String path = Environment.getExternalStorageDirectory().getAbsolutePath();
FileInputStream iStream =  new FileInputStream(path);

解决方案

You are trying to read a directory... what you need is the file! Do something like this... then, you can read the file as you want.

File dir = Environment.getExternalStorageDirectory();
File yourFile = new File(dir, "path/to/the/file/inside/the/sdcard.ext");

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