IOUtils.java

package it.sephiroth.android.library.imagezoom.test.utils;

import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.ParcelFileDescriptor;
import android.provider.MediaStore.Images.ImageColumns;

import java.io.Closeable;

/**
 * Various I/O utilities
 *
 * @author alessandro
 */
public class IOUtils {

    /**
     * Close a {@link Closeable} stream without throwing any exception
     *
     * @param c
     */
    public static void closeSilently(final Closeable c) {
        if (c == null) return;
        try {
            c.close();
        } catch (final Throwable ignored) {
        }
    }

    public static void closeSilently(final ParcelFileDescriptor c) {
        if (c == null) return;
        try {
            c.close();
        } catch (final Throwable ignored) {
        }
    }

    public static void closeSilently(Cursor cursor) {
        if (cursor == null) return;
        try {
            if (cursor != null) cursor.close();
        } catch (Throwable ignored) {
        }
    }

    /**
     * Try to return the absolute file path from the given Uri
     *
     * @param context
     * @param uri
     * @return the file path or null
     */
    public static String getRealFilePath(final Context context, final Uri uri) {

        if (null == uri) return null;

        final String scheme = uri.getScheme();
        String data = null;

        if (scheme == null)
            data = uri.getPath();
        else if (ContentResolver.SCHEME_FILE.equals(scheme)) {
            data = uri.getPath();
        } else if (ContentResolver.SCHEME_CONTENT.equals(scheme)) {
            Cursor cursor = context.getContentResolver().query(uri, new String[]{ImageColumns.DATA}, null, null, null);
            if (null != cursor) {
                if (cursor.moveToFirst()) {
                    int index = cursor.getColumnIndex(ImageColumns.DATA);
                    if (index > -1) {
                        data = cursor.getString(index);
                    }
                }
                cursor.close();
            }
        }
        return data;
    }
}