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AssetUtils.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.wearable.recipeassistant;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.io.InputStream;

final class AssetUtils {
    private static final String TAG = "RecipeAssistant";

public static byte[] loadAsset(Context context, String asset) {
        byte[] buffer = null;
        try {
            InputStream is = context.getAssets().open(asset);
            int size = is.available();
            buffer = new byte[size];
            is.read(buffer);
            is.close();
        } catch (IOException e) {
            Log.e(TAG, "Failed to load asset " + asset + ": " + e);
        }
        return buffer;
    }

public static JSONObject loadJSONAsset(Context context, String asset) {
        String jsonString = new String(loadAsset(context, asset));
        JSONObject jsonObject = null;
        try {
            jsonObject = new JSONObject(jsonString);
        } catch (JSONException e) {
            Log.e(TAG, "Failed to parse JSON asset " + asset + ": " + e);
        }
        return jsonObject;
    }

public static Bitmap loadBitmapAsset(Context context, String asset) {
        InputStream is = null;
        Bitmap bitmap = null;
        try {
            is = context.getAssets().open(asset);
            if (is != null) {
                bitmap = BitmapFactory.decodeStream(is);
            }
        } catch (IOException e) {
            Log.e(TAG, e.toString());
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    Log.e(TAG, "Cannot close InputStream: ", e);
                }
            }
        }
        return bitmap;
    }
}