How to delete a file/folder in a SDCARD under Android Platform? [closed]

问题

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Closed 7 years ago.

I want to know how to delete a file/folder in SD Card. I tried the code below:

File folder = Environment.getExternalStorageDirectory();
String fileName = folder.getPath() + "/LOST.DIR/ppt52.ppt";
File myFile = new File(fileName);
if(myFile.exists()) {
    myFile.delete();
}

but it didn't work.

回答1:

Maybe the folder you are trying to access is Protected. So try to change the access mode before accessing it.

Or you are missing the following permission,

uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE

来源：https://stackoverflow.com/questions/8922714/how-to-delete-a-file-folder-in-a-sdcard-under-android-platform