Example usage for java.io File delete

Introduction

In this page you can find the example usage for java.io File delete.

Prototype

public boolean delete()

Source Link

Document

Deletes the file or directory denoted by this abstract pathname.

Usage

From source file:Main.java

public static boolean deleteFile(String path) {
    if (TextUtils.isEmpty(path)) {
        return true;
    }//from  www  .j av  a 2  s  . c o m

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

From source file:Main.java

/**
 * Deletes the contents of {@code dir}. Throws an IOException if any file
 * could not be deleted, or if {@code dir} is not a readable directory.
 *///w  w w .jav a 2  s. c o  m
public static void deleteContents(File dir) throws IOException {
    File[] files = dir.listFiles();
    if (files == null) {
        throw new IOException("not a readable directory: " + dir);
    }
    for (File file : files) {
        if (file.isDirectory()) {
            deleteContents(file);
        }
        if (!file.delete()) {
            throw new IOException("failed to delete file: " + file);
        }
    }
}

From source file:Main.java

public static boolean deleteFile(String path) {
    // If path == null will throw NullPointException.
    if (TextUtils.isEmpty(path)) {
        return false;
    }//from   w  w  w . ja v  a 2s.  c  om

    File file = new File(path);
    if (!file.exists()) {
        return false;
    }

    boolean flag = file.delete();
    File parent = file.getParentFile();
    if (isEmptyDirectory(parent)) {
        parent.delete();
    }
    return flag;
}

From source file:Main.java

/**
 * Deletes an image given its Uri./*from ww  w.j a  v  a2  s.co  m*/
 *
 * @param cameraPicUri
 * @param context
 * @return true if it was deleted successfully, false otherwise.
 */
public static boolean deleteImageWithUriIfExists(Uri cameraPicUri, Context context) {
    if (cameraPicUri != null) {
        File fdelete = new File(cameraPicUri.getPath());
        if (fdelete.exists()) {
            if (fdelete.delete()) {
                context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED,
                        Uri.parse("file://" + Environment.getExternalStorageDirectory())));
                return true;
            }
        }
    }
    return false;
}

From source file:Main.java

public static File setOutPutImage(String name) {
    File outputimage = new File(Environment.getExternalStorageDirectory(), name + ".jpg");
    if (outputimage.exists()) {
        outputimage.delete();
    }//from  ww  w .  j av  a 2 s .  c  o m
    try {
        outputimage.createNewFile();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return outputimage;
}

From source file:Main.java

public static void deleteDir(File target) {
    if (target.exists() == false) {
        return;/*from   ww w. ja  va2s.  c o  m*/
    }

    if (target.isFile()) {
        target.delete();
    }

    if (target.isDirectory()) {
        File[] files = target.listFiles();
        for (int i = 0; i < files.length; i++) {
            deleteDir(files[i]);
        }
        target.delete();
    }
}

From source file:Main.java

public static boolean saveFile(String filePath, String str) throws IOException {
    boolean result = false;
    if (filePath != null && str != null) {
        Log.d(TAG, "filePath:" + filePath);
        File file = new File(filePath);
        if (file.exists()) {
            file.delete();
        }//from w w  w  .  j  av  a 2s.c  o  m
        if (file.createNewFile()) {
            FileOutputStream fos = new FileOutputStream(file.getAbsolutePath());
            fos.write(str.getBytes("gb18030"));
            fos.flush();
            fos.close();
            result = true;
        }
    }
    return result;
}

From source file:Main.java

public static String saveImg(Bitmap b, String name) throws Exception {
    String path = Environment.getExternalStorageDirectory().getPath() + File.separator + "QuCai/shareImg/";
    File mediaFile = new File(path + File.separator + name + ".jpg");
    if (mediaFile.exists()) {
        mediaFile.delete();

    }/*from   w w  w  . j  a  va  2 s. c o m*/
    if (!new File(path).exists()) {
        new File(path).mkdirs();
    }
    mediaFile.createNewFile();
    FileOutputStream fos = new FileOutputStream(mediaFile);
    b.compress(Bitmap.CompressFormat.PNG, 100, fos);
    fos.flush();
    fos.close();
    b.recycle();
    b = null;
    System.gc();
    return mediaFile.getPath();
}

From source file:Main.java

public static File createTempFile(String prefix, String suffix, File dir, boolean isReCreat)
        throws IOException {
    int exceptionsCount = 0;
    while (true) {
        try {/*from   w ww .j ava2  s  . c om*/
            File file = File.createTempFile(prefix, suffix, dir).getCanonicalFile();
            if (isReCreat) {
                file.delete();
                file.createNewFile();
            }
            return file;
        } catch (IOException ioex) { // fixes java.io.WinNTFileSystem.createFileExclusively access denied
            if (++exceptionsCount >= 50) {
                throw ioex;
            }
        }
    }
}

From source file:Main.java

/**
 * save the bitmap to local,add give a white bg color
 * @param bitmap/* w  ww  . ja  v a2s  . c  om*/
 * @param path
 * @return
 */
public static boolean saveBitmapNoBgToSdCard(Bitmap bitmap, String path) {
    BufferedOutputStream bos = null;
    try {
        File file = new File(path);
        if (file.exists())
            file.delete();
        bos = new BufferedOutputStream(new FileOutputStream(file));

        int w = bitmap.getWidth();
        int h = bitmap.getHeight();
        int w_new = w;
        int h_new = h;
        Bitmap resultBitmap = Bitmap.createBitmap(w_new, h_new, Bitmap.Config.ARGB_8888);
        //            Paint paint = new Paint();
        //            paint.setColor(Color.WHITE);
        Canvas canvas = new Canvas(resultBitmap);
        canvas.drawColor(Color.WHITE);
        canvas.drawBitmap(bitmap, new Rect(0, 0, w, h), new Rect(0, 0, w_new, h_new), null);
        resultBitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos);
        bos.flush();
        resultBitmap.recycle();
        return true;
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (bos != null) {
            try {
                bos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return false;
}