CODEWITHSUNDEEP
android
meh
meh

Reputation: 22469

Download an image file and replace existing image file

I am trying to download an image file and override and existing file if it exists.

But it doesn't replace the existing file.

public static String saveBitmap(String url, String fileName, Context context,
        boolean deleteExisting) {
    File cacheDir;
    if (android.os.Environment.getExternalStorageState().equals(
            android.os.Environment.MEDIA_MOUNTED))
        cacheDir = context.getDir("images", Context.MODE_PRIVATE);
    else
        cacheDir = context.getCacheDir();
    if (!cacheDir.exists())
        cacheDir.mkdirs();

    File f = new File(cacheDir, fileName + ".png");
    Bitmap bitmap = null;
    // Is the bitmap in our cache?
    if (f.exists()) {
        bitmap = BitmapFactory.decodeFile(f.getPath());
    }
    if (bitmap != null && !deleteExisting)
        return f.getPath();
    else {
        // Nope, have to download it
        try {
            InputStream input = new URL(url).openConnection().getInputStream();
            bitmap = BitmapFactory.decodeStream(new FlushedInputStream(input));
            // save bitmap to cache for later
            writeFile(bitmap, f);
            return f.getPath();
        } catch (FileNotFoundException ex) {
            ex.printStackTrace();
            return null;
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
            return null;
        }
    }
}

Upvotes: 3

Views: 6999

Answers (2)

hemantsb
hemantsb

Reputation: 2059

Have you tried permission, if not then add this permission in manifest

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

Upvotes: 0

mdDroid
mdDroid

Reputation: 3195

Go through following code for storing file

private void createDirectoryAndSaveFile(Bitmap imageToSave, String fileName) {

File direct = new File(Environment.getExternalStorageDirectory() + "/DirName");

if (!direct.exists()) {
    File wallpaperDirectory = new File("/sdcard/DirName/");
    wallpaperDirectory.mkdirs();
  }

    File file = new File(new File("/sdcard/DirName/"), fileName);
    if (file.exists())
        file.delete();
    try {
        FileOutputStream out = new FileOutputStream(file);
        imageToSave.compress(Bitmap.CompressFormat.JPEG, 100, out);
        out.flush();
        out.close();

    } catch (Exception e) {
        e.printStackTrace();
    }

}

Upvotes: 5

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