无法在 Android 设备上的外部存储中创建文件夹 [英] can't create a folder in external storage on android device

问题描述

我正在尝试在外部存储中创建一个文件夹，我在这里关注了其他几个线程.然而，即使我似乎在按照他们的指示去做，但创作还是失败了.

I am trying to create a folder in external storage and I followed a couple of other threads here. However, even though I seem to be doing what they indicate, creation fails.

这是一段代码

boolean mExternalStorageAvailable = false;
    boolean mExternalStorageWriteable = false;

    String state = Environment.getExternalStorageState();
    if (Environment.MEDIA_MOUNTED.equals(state)) {
        mExternalStorageAvailable = true;
        mExternalStorageWriteable = true;
    } else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
        mExternalStorageAvailable = true;
        mExternalStorageWriteable = false;
    } else {
        mExternalStorageAvailable = false;
        mExternalStorageWriteable = false;
    }
    File exst = Environment.getExternalStorageDirectory();
    String exstPath = exst.getPath();

    File fooo = new File(exstPath+"/fooo");
    boolean success = fooo.mkdir();

当我执行它时，我得到这个:

When I execute it, I get this:

mExternalStorageAvailable = true;
mExternalStorageWriteable = true;
success = false;

这是整个清单文件:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mydev.mobile.Test"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" />

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" >
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <activity
        android:label="@string/app_name"
        android:name=".TestIndexSearchForHitsAndroidActivity" >
        <intent-filter >
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

我做错了什么?谢谢！

推荐答案

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mydev.mobile.Test"
android:versionCode="1"
android:versionName="1.0" >
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
...
....
</manifest>

这篇关于无法在 Android 设备上的外部存储中创建文件夹的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！