delete file or directory - Android java.io

Android examples for java.io:File Delete

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Description

delete file or directory

Demo Code

import android.app.Activity;
import android.content.Context;
import android.content.CursorLoader;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.MediaStore;
import android.text.TextUtils;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class Main{
    public static boolean deleteFile(File file) {

        return file.delete();
    }//from w w  w .j  a v a 2  s.  co m
    public static void DeleteFile(File file) {
        if (file.exists() == false) {
            return;
        } else {
            if (file.isFile()) {
                file.delete();
                return;
            }
            if (file.isDirectory()) {
                File[] childFile = file.listFiles();
                if (childFile == null || childFile.length == 0) {
                    file.delete();
                    return;
                }
                for (File f : childFile) {
                    DeleteFile(f);
                }
                file.delete();
            }
        }
    }
    /**
     * delete file or directory
     * <ul>
     * <li>if path is null or empty, return true</li>
     * <li>if path not exist, return true</li>
     * <li>if path exist, delete recursion. return true</li>
     * <ul>
     *
     */
    public static boolean deleteFile(String path) {


        File file = new File(path);
        if (!file.exists()) {
            return true;
        }
        if (file.isFile()) {
            return file.delete();
        }
        if (!file.isDirectory()) {
            return false;
        }
        for (File f : file.listFiles()) {
            if (f.isFile()) {
                f.delete();
            } else if (f.isDirectory()) {
                deleteFile(f.getAbsolutePath());
            }
        }
        return file.delete();
    }

}

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