Android Open Source - WebImageView Storage Utils

• Back to Image/url  ↑

From Project

Back to project page WebImageView.

License

The source code is released under:

MIT License

Java Source Code

package com.rsv.utils;
//from   w w w . j a  v a  2s . c o  m
import java.io.File;
import java.io.IOException;
import android.annotation.SuppressLint;
import android.os.Build;
import android.os.Environment;
import android.os.StatFs;

public final class StorageUtils {
  private static final String EXT_STORAGE_PATH_PREFIX = "/Android/data/";
  private static final String EXT_STORAGE_FILES_PATH_SUFFIX = "/files/";
  private static final String EXT_STORAGE_CACHE_PATH_SUFFIX = "/cache/";

  @SuppressLint("NewApi")
  @SuppressWarnings("deprecation")
  public static long getFreeSpace(String path) {
    StatFs stat = new StatFs(path);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2)
      return stat.getBlockSizeLong() * stat.getAvailableBlocksLong();

    return stat.getBlockSize() * stat.getAvailableBlocks();
  }

  public static long getExternalFreeSpace() {
    return getFreeSpace(getExternalDir("").toString());
  }

  public static File getExternalCacheDirectory(String packageName, String dirName) {
    File cacheDir = getExternalCacheDir(packageName);

    File individualCacheDir = new File(cacheDir, dirName);

    if (!individualCacheDir.exists()) {
      if (!individualCacheDir.mkdir()) {
        individualCacheDir = cacheDir;
      }
    }
    return individualCacheDir;
  }

  public static boolean isExternalStorageWritable() {
    return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
  }

  public static boolean isExternalStorageReadable() {
    if (isExternalStorageWritable()) {
      return true;
    }
    return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED_READ_ONLY);
  }

  /**
   * Return the recommended external files directory, whether using API level
   * 8 or lower. (Uses getExternalStorageDirectory and then appends the
   * recommended path.)
   * 
   * @param packageName
   * @return
   */
  public static File getExternalFilesDir(final String packageName) {
    return getExternalDirAllApiLevels(packageName, EXT_STORAGE_FILES_PATH_SUFFIX);
  }

  /**
   * Return the recommended external cache directory, whether using API level
   * 8 or lower. (Uses getExternalStorageDirectory and then appends the
   * recommended path.)
   * 
   * @param packageName
   * @return
   */
  public static File getExternalCacheDir(final String packageName) {
    return getExternalDirAllApiLevels(packageName, EXT_STORAGE_CACHE_PATH_SUFFIX);
  }

  public static File getExternalDir(final String packageName) {
    return getExternalDirAllApiLevels(packageName, "");
  }

  private static File getExternalDirAllApiLevels(final String packageName, final String suffixType) {
    File baseDir = new File(Environment.getExternalStorageDirectory() + EXT_STORAGE_PATH_PREFIX
        + packageName);

    if (!baseDir.exists()) {
      synchronized (FileUtils.DATA_LOCK) {
        baseDir.mkdirs();
        try {
          new File(baseDir, ".nomedia").createNewFile();
        } catch (IOException e) {
          LogUtils.logException(e);
        }
      }

    }

    File dir = new File(baseDir + suffixType);

    if (!dir.exists()) {
      synchronized (FileUtils.DATA_LOCK) {
        dir.mkdir();
      }
    }

    return dir;
  }

}

Java Source Code List

• Back to Image/url  ↑