android - 如何从Android 5中的外部存储中删除文件

Question

我用过

File f=new File(MyPath);
f.delete();

并且我使用了权限 WRITE_EXTERNAL_STORAGE 和 READ_EXTERNAL_STORAGE，但它在 Android 5 中不起作用。

Logcat 消息:

java.io.FileNotFoundException: storage/external_SD/mm.txt: open failed: EACCES (Permission denied)  

list 文件:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.mahestan_programming.myapplication">

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

---

WE CANNOT DELETE AND WRITE FILES FROM MICRO SD-CARD SINCE VERSION 4.4. It is read only now.

Answer 1

请仔细检查您的文件路径，路径如下所示:

String filePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Audio/audio_20160622_081844.3gp";
File file = new File(filePath);
if (file.exists()) {
   file.delete();
}