我想创建的外部存储的文件夹，我跟其他几个线程在这里。不过，即使我似乎在做什么，他们表示，创建失败。

下面是一张code

 布尔mExternalStorageAvailable = FALSE;
    布尔mExternalStorageWriteable = FALSE;

    字符串状态= Environment.getExternalStorageState（）;
    如果（Environment.MEDIA_MOUNTED.equals（州））{
        mExternalStorageAvailable = TRUE;
        mExternalStorageWriteable = TRUE;
    }否则，如果（Environment.MEDIA_MOUNTED_READ_ONLY.equals（州））{
        mExternalStorageAvailable = TRUE;
        mExternalStorageWriteable = FALSE;
    } 其他 {
        mExternalStorageAvailable = FALSE;
        mExternalStorageWriteable = FALSE;
    }
    文件EXST = Environment.getExternalStorageDirectory（）;
    串exstPath = exst.getPath（）;

    文件fooo =新的文件（exstPath +/ fooo）;
    布尔成功= fooo.mkdir（）;
 

当我执行它，我得到这样的：

  mExternalStorageAvailable = TRUE;
mExternalStorageWriteable = TRUE;
成功= FALSE;
 

下面是整个清单文件：

 ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆LT;舱单的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
包=com.mydev.mobile.Test
安卓版code =1
机器人：VERSIONNAME =1.0＆GT;

＆LT;使用-SDK安卓的minSdkVersion =8/＆GT;

＆lt;应用
    机器人：图标=@可绘制/ ic_launcher
    机器人：标签=@字符串/ APP_NAME＆GT;
    ＆LT;使用-权限的Andr​​oid：名称=android.permission.WRITE_EXTERNAL_STORAG​​E/＆GT;
    ＆LT;活动
        机器人：标签=@字符串/ APP_NAME
        机器人：名称=TestIndexSearchForHitsAndroidActivity。＆GT;
        ＆LT;意向滤光器＆gt;
            ＆lt;作用机器人：名称=android.intent.action.MAIN/＆GT;

            ＆LT;类机器人：名称=android.intent.category.LAUNCHER/＆GT;
        ＆所述; /意图滤光器＆gt;
    ＆LT; /活性GT;
＆LT; /用途＆gt;
 

我是什么做错了吗？谢谢！

 ＆LT;舱单的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
包=com.mydev.mobile.Test
安卓版code =1
机器人：VERSIONNAME =1.0＆GT;
    ＆LT;使用-权限的Andr​​oid：名称=android.permission.WRITE_EXTERNAL_STORAG​​E/＆GT;
...
....
＆LT; / maifest＆GT;
 

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.

Here's a piece of code

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();

When I execute it, I get this:

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

Here's the entire manifest file:

<?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>

What am I doing wrong? Thanks!

<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" />
...
....
</maifest>