com.android.project.imagefetcher.Utils.java Source code

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Here is the source code for com.android.project.imagefetcher.Utils.java

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/*
 * Copyright (C) 2012 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.android.project.imagefetcher;

import com.android.project.imagefetcher.ImageCache.ImageCacheParams;

import android.annotation.TargetApi;
import android.os.Build;
import android.os.StrictMode;
import android.support.v4.app.FragmentActivity;

/**
 * Class containing some static utility methods.
 */
public class Utils {

    private static final String IMAGE_CACHE_DIR = "imageFetcher";

    private Utils() {
    };

    @TargetApi(11)
    public static void enableStrictMode(Class<?> strictClass) {
        if (Utils.hasGingerbread()) {
            StrictMode.ThreadPolicy.Builder threadPolicyBuilder = new StrictMode.ThreadPolicy.Builder().detectAll()
                    .penaltyLog();
            StrictMode.VmPolicy.Builder vmPolicyBuilder = new StrictMode.VmPolicy.Builder().detectAll()
                    .penaltyLog();

            if (Utils.hasHoneycomb()) {
                threadPolicyBuilder.penaltyFlashScreen();
                vmPolicyBuilder.setClassInstanceLimit(strictClass, 1).setClassInstanceLimit(strictClass, 1);
            }
            StrictMode.setThreadPolicy(threadPolicyBuilder.build());
            StrictMode.setVmPolicy(vmPolicyBuilder.build());
        }
    }

    public static boolean hasFroyo() {
        // Can use static final constants like FROYO, declared in later versions
        // of the OS since they are inlined at compile time. This is guaranteed behavior.
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO;
    }

    public static boolean hasGingerbread() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD;
    }

    public static boolean hasHoneycomb() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB;
    }

    public static boolean hasHoneycombMR1() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1;
    }

    public static boolean hasJellyBean() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
    }

    public static ImageFetcher getImageFetcher(final FragmentActivity activity) {
        ImageCacheParams cacheParams = new ImageCacheParams(activity, IMAGE_CACHE_DIR);
        // Set memory cache to 25% of mem class
        cacheParams.setMemCacheSizePercent(activity, 0.25f);
        // The ImageFetcher takes care of loading images into our ImageView children asynchronously
        ImageFetcher imageFetcher = new ImageFetcher(activity);
        imageFetcher.setImageFadeIn(true);
        imageFetcher.addImageCache(activity.getSupportFragmentManager(), cacheParams);
        return imageFetcher;
    }
}