不能读/写的Andr​​oid到SD卡 [英] Can't read/write to sdcard in Android

问题描述

可以在问题的任何一个帮助

Can any one help in that problem

当我尝试code

File routesRoot = Environment.getExternalStorageDirectory();
            if (!routesRoot.canWrite())
                System.out.println("can't write root");
            if (!routesRoot.canRead())
                System.out.println("can't read root");

在运行的程序都不能写/读occure

when run program both can't write /read occure

我已经设置权限访问SD卡是什么问题？

I have set permission to access sdcard what is the problem ??

推荐答案

你在你的manifest.xml ??

Do you have this in your manifest.xml??

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

在Android SDK版本4，你有你的清单文件授予的权限指定。

From android SDK ver 4, you have to specify this in your manifest file to give the permissions.

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