删除 Android 内部存储中的目录

Question

In order to remove a directory within Android internal storage, this is the kind of code I use.

    val directory = getDir("myDirName", MODE_PRIVATE) // *1.

    if (directory.isDirectory()) {
        directory.delete()
    }

The first problem is that line *1 will create the directory in case it does not exist.

Is there a way to actually know if a directory exists or not, without creating one if it does not?

Beside, I also noticed that this code is not working one hundred percent of the time.

Is there a better way to remove a directory?

Answer 1

You could implement something like that:

val directory = File("myDirName")

if (directory.exists()) {
    directory.delete()
}

Answer 2

this is a method which delete your app directory

public boolean deleteRecursive(Context context,String filePath) {
        
        boolean result=false;

        //Create androiddeft folder if it does not exist
        File fileOrDirectory = new File(filePath);

        if (fileOrDirectory.isDirectory()) {
            for (File child : fileOrDirectory.listFiles()) {

                child.delete();
            }
        }else {
            log("Delete pdf","no directory found");
            return false;
        }

        if (fileOrDirectory.listFiles().length<2)
        {
            result=true;
        }else {
            result=false;
       }


       return  result;

    }