Example usage for android.content Context getCacheDir

Introduction

In this page you can find the example usage for android.content Context getCacheDir.

Prototype

public abstract File getCacheDir();

Source Link

Document

Returns the absolute path to the application specific cache directory on the filesystem.

Usage

From source file:com.amytech.android.library.utils.asynchttp.FileAsyncHttpResponseHandler.java

/**
 * Used when there is no file to be used when calling constructor
 *
 * @param context/*from   ww w . j a  va2  s.  c o m*/
 *            Context, must not be null
 * @return temporary file or null if creating file failed
 */
protected File getTemporaryFile(Context context) {
    Utils.asserts(context != null, "Tried creating temporary file without having Context");
    try {
        // not effective in release mode
        assert context != null;
        return File.createTempFile("temp_", "_handled", context.getCacheDir());
    } catch (IOException e) {
        Log.e(LOG_TAG, "Cannot create temporary file", e);
    }
    return null;
}

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From source file:com.raptureinvenice.webimageview.cache.WebImageCache.java

public void addBitmapToCache(Context context, String urlString, Bitmap bitmap) {
    // mem cache/*from  w w  w.j a va2 s . co m*/
    addBitmapToMemCache(urlString, bitmap);

    // disk cache
    // TODO: manual cache cleanup
    if (mIsDiskCachingEnabled) {
        File path = context.getCacheDir();
        OutputStream os = null;
        String hashedURLString = hashURLString(urlString);

        try {
            // NOWORKY File tmpFile = File.createTempFile("wic.", null);
            File file = new File(path, hashedURLString);
            os = new FileOutputStream(file.getAbsolutePath());

            bitmap.compress(Bitmap.CompressFormat.PNG, 100, os);
            os.flush();
            os.close();

            // NOWORKY tmpFile.renameTo(file);
        } catch (Exception ex) {
            Log.e(TAG, "Could not store " + urlString + " to disk cache: " + ex.toString());
        } finally {
            try {
                os.close();
            } catch (Exception ex) {
            }
        }
    }
}

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From source file:in.rab.ordboken.Ordboken.java

private Ordboken(Context context) {
    mContext = context;/*from w w w .ja  va2  s .  c  o m*/

    try {
        // Ends up only fully caching the search results. Documents use ETag
        // and are conditionally cached.
        HttpResponseCache.install(new File(context.getCacheDir(), "ordboken"), 1024 * 1024);
    } catch (IOException e) {
        // Oh well...
    }

    mPrefs = context.getSharedPreferences("ordboken", Context.MODE_PRIVATE);
    mLastWhere = Where.valueOf(mPrefs.getString("lastWhere", Where.MAIN.toString()));
    mLastWhat = mPrefs.getString("lastWhat", "ordbok");

    mConnMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

    mNeClient = new NeClient(NeClient.Auth.BASIC);
    mNeClient.setPersistentAuthData(mPrefs.getString("persistentAuthData", null));
    mNeClient.setUsername(mPrefs.getString("username", null));
    mNeClient.setPassword(mPrefs.getString("password", null));
}

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From source file:com.blork.anpod.util.BitmapUtils.java

public static BitmapResult fetchImage(Context context, Picture picture, int desiredWidth, int desiredHeight) {

    // First compute the cache key and cache file path for this URL
    File cacheFile = null;/*  w  w w  .  ja  v  a  2s . c  o m*/
    if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
        Log.d("APOD", "creating cache file");
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);

        if (prefs.getBoolean("archive", false)) {
            cacheFile = new File(Environment.getExternalStorageDirectory() + File.separator + "APOD"
                    + File.separator + toSlug(picture.title) + ".jpg");
        } else {
            cacheFile = new File(Environment.getExternalStorageDirectory() + File.separator + "Android"
                    + File.separator + "data" + File.separator + "com.blork.anpod" + File.separator + "cache"
                    + File.separator + toSlug(picture.title) + ".jpg");
        }
    } else {
        Log.d("APOD", "SD card not mounted");
        Log.d("APOD", "creating cache file");
        cacheFile = new File(context.getCacheDir() + File.separator + toSlug(picture.title) + ".jpg");
    }

    if (cacheFile != null && cacheFile.exists()) {
        Log.d("APOD", "Cache file exists, using it.");
        try {
            Bitmap bitmap = decodeStream(new FileInputStream(cacheFile), desiredWidth, desiredHeight);
            return new BitmapResult(bitmap, Uri.fromFile(cacheFile));
        } catch (FileNotFoundException e) {
        }
    }

    try {
        Log.d("APOD", "Not cached, fetching");
        BitmapUtils.manageCache(toSlug(picture.title), context);
        // TODO: check for HTTP caching headers
        final HttpClient httpClient = SyncUtils.getHttpClient(context.getApplicationContext());
        final HttpResponse resp = httpClient.execute(new HttpGet(picture.getFullSizeImageUrl()));
        final HttpEntity entity = resp.getEntity();

        final int statusCode = resp.getStatusLine().getStatusCode();
        if (statusCode != HttpStatus.SC_OK || entity == null) {
            return null;
        }

        final byte[] respBytes = EntityUtils.toByteArray(entity);

        Log.d("APOD", "Writing cache file " + cacheFile.getName());
        try {
            cacheFile.getParentFile().mkdirs();
            cacheFile.createNewFile();
            FileOutputStream fos = new FileOutputStream(cacheFile);
            fos.write(respBytes);
            fos.close();
        } catch (FileNotFoundException e) {
            Log.d("APOD", "Error writing to bitmap cache: " + cacheFile.toString(), e);
        } catch (IOException e) {
            Log.d("APOD", "Error writing to bitmap cache: " + cacheFile.toString(), e);
        }

        // Decode the bytes and return the bitmap.
        Log.d("APOD", "Reiszing bitmap image");

        Bitmap bitmap = decodeStream(new ByteArrayInputStream(respBytes), desiredWidth, desiredHeight);
        Log.d("APOD", "Returning bitmap image");
        return new BitmapResult(bitmap, Uri.fromFile(cacheFile));
    } catch (Exception e) {
        Log.d("APOD", "Problem while loading image: " + e.toString(), e);
    }

    return null;
}

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From source file:at.modalog.cordova.plugin.cache.Cache.java

@Override
public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
    /*try// w w w. j av a2s. c om
    {
    */
    if (action.equals("clear")) {
        Log.v(LOG_TAG, "Cordova Android Cache.clear() called.");
        this.callbackContext = callbackContext;

        final Cache self = this;
        final Context ctx = this.cordova.getActivity().getApplicationContext();
        cordova.getActivity().runOnUiThread(new Runnable() {
            public void run() {
                try {
                    // clear the cache
                    self.webView.clearCache(true);
                    File dir = ctx.getCacheDir();
                    deleteDir(dir);

                    // send success result to cordova
                    PluginResult result = new PluginResult(PluginResult.Status.OK);
                    result.setKeepCallback(false);
                    self.callbackContext.sendPluginResult(result);
                } catch (Exception e) {
                    String msg = "Error while clearing webview cache.";
                    Log.e(LOG_TAG, msg);

                    // return error answer to cordova
                    PluginResult result = new PluginResult(PluginResult.Status.ERROR, msg);
                    result.setKeepCallback(false);
                    self.callbackContext.sendPluginResult(result);
                }
            }
        });
        return true;
    }
    return false;
    /*
    }
    catch (JSONException e)
    {
    // TODO: signal JSON problem to JS
    //callbackContext.error("Problem with JSON");
    return false;
    }
    */
}

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From source file:fr.eoidb.util.ImageDownloader.java

private void flushSingleCacheFileToDisk(Bitmap bitmap, String cacheIconName, Context context)
        throws IOException {
    File cacheIconFile = new File(context.getCacheDir(), cacheIconName);
    if (!cacheIconFile.exists()) {
        if (BuildConfig.DEBUG)
            Log.v(LOG_TAG, "Flushing bitmap " + cacheIconName + " to disk...");
        cacheIconFile.createNewFile();/* w w  w .  ja va2  s .  com*/

        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(cacheIconFile));
        bitmap.compress(CompressFormat.PNG, 100, bos);
        bos.flush();
        bos.close();
    }
}

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From source file:fr.eoidb.util.ImageDownloader.java

private Bitmap loadSingleCacheFile(String url, Context context) {
    Bitmap bitmap = null;/*  ww  w .j a  v  a2 s  .co  m*/
    File cacheIconFile = new File(context.getCacheDir(), getCacheFileName(url));
    if (cacheIconFile.exists()) {
        if (BuildConfig.DEBUG)
            Log.v(LOG_TAG, "Loading cache file : " + url);

        bitmap = BitmapFactory.decodeFile(cacheIconFile.getAbsolutePath());

        if (bitmap != null) {
            sHardBitmapCache.put(url, bitmap);
        }
    }

    return bitmap;
}

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From source file:org.kontalk.util.MediaStorage.java

/**
 * Tries various methods for obtaining the rotation of the image.
 * @return a matrix to rotate the image (if any)
 *//* w w w .  j  av a2 s. c  o m*/
private static Matrix getRotation(Context context, Uri media) throws IOException {
    // method 1: query the media storage
    Cursor cursor = context.getContentResolver().query(media,
            new String[] { MediaStore.Images.ImageColumns.ORIENTATION }, null, null, null);

    if (cursor != null) {
        cursor.moveToFirst();
        int orientation = cursor.getInt(0);
        cursor.close();

        if (orientation != 0) {
            Matrix m = new Matrix();
            m.postRotate(orientation);

            return m;
        }
    }

    // method 2: write media contents to a temporary file and run ExifInterface
    InputStream in = context.getContentResolver().openInputStream(media);
    OutputStream out = null;
    File tmp = null;
    try {
        tmp = File.createTempFile("rotation", null, context.getCacheDir());
        out = new FileOutputStream(tmp);

        SystemUtils.copy(in, out);
        // flush the file
        out.close();

        ExifInterface exif = new ExifInterface(tmp.toString());
        int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);
        Matrix matrix = new Matrix();
        switch (orientation) {
        case ExifInterface.ORIENTATION_ROTATE_90:
            matrix.postRotate(90);
            break;
        case ExifInterface.ORIENTATION_ROTATE_180:
            matrix.postRotate(180);
            break;
        case ExifInterface.ORIENTATION_ROTATE_270:
            matrix.postRotate(270);
            break;
        default:
            return null;
        }

        return matrix;
    } finally {
        if (tmp != null)
            tmp.delete();
        SystemUtils.closeStream(in);
        SystemUtils.closeStream(out);
    }
}

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From source file:com.android.settings.users.EditUserPhotoController.java

private Uri createTempImageUri(Context context, String fileName, boolean purge) {
    final File folder = context.getCacheDir();
    folder.mkdirs();//from w w  w.  j  a  v a2 s  . com
    final File fullPath = new File(folder, fileName);
    if (purge) {
        fullPath.delete();
    }
    return FileProvider.getUriForFile(context, RestrictedProfileSettings.FILE_PROVIDER_AUTHORITY, fullPath);
}

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From source file:fr.sedona.volley.manager.HttpImageLoader.java

@SuppressLint("NewApi")
private long getDiskCacheSpace(Context context) {
    String cachePath = context.getCacheDir().getPath();
    File diskCacheDir = new File(cachePath);

    if (Build.VERSION.SDK_INT >= 9) {
        return Math.min(diskCacheDir.getFreeSpace() - (1024 * 1024 * 30), (long) 1024 * 1024 * 20);
    }//from   www .  j  av a 2 s.  c om
    StatFs statFs = new StatFs(diskCacheDir.getAbsolutePath());
    return (long) Math.min(statFs.getAvailableBlocks() * (long) statFs.getBlockSize() - (1024 * 1024 * 30),
            (long) 1024 * 1024 * 20);
}

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