Android Open Source - webimageloader I O Util

From Project

Back to project page webimageloader.

License

The source code is released under:

Apache License

If you think the Android project webimageloader listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package com.webimageloader.util;
/*from  w w  w  . j  a  v  a  2  s .  co m*/
import java.io.Closeable;
import java.io.File;

import android.annotation.TargetApi;
import android.content.Context;
import android.os.Environment;

public class IOUtil {
    public static void closeQuietly(Closeable closeable) {
        if (closeable != null) {
            try {
                closeable.close();
            } catch (Exception ignored) {
            }
        }
    }

    /**
     * Get a usable cache directory (external if available, internal otherwise).
     *
     * @param context The context to use
     * @param uniqueName A unique directory name to append to the cache dir
     * @return The cache dir
     */
    public static File getDiskCacheDir(Context context, String uniqueName) {
        // Check if media is mounted or storage is built-in, if so, try and use external cache dir
        // otherwise use internal cache dir
        final String cachePath = Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()) ||
                !isExternalStorageRemovable() ?
                getExternalCacheDir(context).getPath() :
                context.getCacheDir().getPath();

        return new File(cachePath + File.separator + uniqueName);
    }

    /**
     * Check if external storage is built-in or removable.
     *
     * @return True if external storage is removable (like an SD card), false
     *         otherwise.
     */
    @TargetApi(9)
    public static boolean isExternalStorageRemovable() {
        if (Android.isAPI(9)) {
            return Environment.isExternalStorageRemovable();
        }
        return true;
    }

    /**
     * Get the external app cache directory.
     *
     * @param context The context to use
     * @return The external cache dir
     */
    @TargetApi(8)
    public static File getExternalCacheDir(Context context) {
        // Do we have a built-in external cache dir method.
        if (Android.isAPI(8)) {
            File cacheDir = context.getExternalCacheDir();
            if (cacheDir != null) {
                return cacheDir;
            }
        }

        // Before Froyo we need to construct the external cache dir ourselves
        final String cacheDir = "/Android/data/" + context.getPackageName() + "/cache/";
        return new File(Environment.getExternalStorageDirectory().getPath() + cacheDir);
    }

    private IOUtil() {}
}

Java Source Code List