How to delete all files and folders in one folder on Android

Question

I use this code to delete all files:

File root = new File(\"root path\");
File[] Files = root.listFiles();
if(Files != null) {
    int j;
    for(j = 0; j < F         


        

Answer 1

As a kotlin extension function you can do this

fun File.deleteDirectoryFiles(){
    this.listFiles().forEach {
        if(it.isDirectory){
            it.deleteDirectoryFiles()
        }else{
            it.delete()
        }
    }

    this.delete()
}

Then you can just do

file.deleteDirectoryFiles()