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package de.danoeh.antennapod.util;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.StatFs;
import android.util.Log;
import de.danoeh.antennapod.BuildConfig;
import de.danoeh.antennapod.PodcastApp;
import de.danoeh.antennapod.activity.StorageErrorActivity;
import de.danoeh.antennapod.preferences.UserPreferences;
import java.io.File;
/** Utility functions for handling storage errors */
public class StorageUtils {
private static final String TAG = "StorageUtils";
public static boolean storageAvailable(Context context) {
File dir = UserPreferences.getDataFolder(context, null);
if (dir != null) {
return dir.exists() && dir.canRead() && dir.canWrite();
} else {
if (BuildConfig.DEBUG)
Log.d(TAG, "Storage not available: data folder is null");
return false;
}
}
/**
* Checks if external storage is available. If external storage isn't
* available, the current activity is finsished an an error activity is
* launched.
*
* @param activity
* the activity which would be finished if no storage is
* available
* @return true if external storage is available
*/
public static boolean checkStorageAvailability(Activity activity) {
boolean storageAvailable = storageAvailable(activity);
if (!storageAvailable) {
activity.finish();
activity.startActivity(new Intent(activity,
StorageErrorActivity.class));
}
return storageAvailable;
}
/** Get the number of free bytes that are available on the external storage. */
public static long getFreeSpaceAvailable() {
StatFs stat = new StatFs(UserPreferences.getDataFolder(
PodcastApp.getInstance(), null).getAbsolutePath());
long availableBlocks;
long blockSize;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
availableBlocks = stat.getAvailableBlocksLong();
blockSize = stat.getBlockSizeLong();
} else {
availableBlocks = stat.getAvailableBlocks();
blockSize = stat.getBlockSize();
}
return availableBlocks * blockSize;
}
}
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