com.yixia.zi.utils.UIUtils.java Source code

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Here is the source code for com.yixia.zi.utils.UIUtils.java

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/*
 * Copyright (C) 2012 YIXIA.COM
 *
 * 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.yixia.zi.utils;

import java.io.File;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Build;
import android.os.StatFs;
import android.support.v4.app.FragmentActivity;
import android.text.format.Formatter;
import android.util.TypedValue;

/**
 * 
 * @author crossle
 */
public class UIUtils {

    private static final String IMAGE_FETCHER = "imageFetcher";

    public static boolean hasFroyo() {
        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 hasGingerbreadMR1() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD_MR1;
    }

    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 hasICS() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH;
    }

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

    public static boolean hasJellyBeanMR1() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1;
    }

    public static boolean isTablet(Context context) {
        return (context.getResources().getConfiguration().screenLayout
                & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE;
    }

    public static boolean isHoneycombTablet(Context context) {
        return hasHoneycomb() && isTablet(context);
    }

    public static boolean isGingerbread() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD
                && Build.VERSION.SDK_INT <= Build.VERSION_CODES.GINGERBREAD_MR1;
    }

    public static boolean isNetworkAvailable(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        if (activeNetwork == null || !activeNetwork.isConnected()) {
            return false;
        }
        return true;
    }

    public static ImageFetcher getImageFetcher(final FragmentActivity activity) {
        // The ImageFetcher takes care of loading remote images into our ImageView
        ImageFetcher fetcher = new ImageFetcher(activity);
        fetcher.setImageCache(ImageCache.findOrCreateCache(activity, IMAGE_FETCHER));
        return fetcher;
    }

    /**
     * Set the theme of the Activity, and restart it by creating a new Activity of
     * the same type.
     */
    public static void changeToTheme(Activity activity) {
        activity.finish();
        activity.startActivity(new Intent(activity, activity.getClass()));
    }

    public static TypedValue getAttrValue(Activity activity, int attrId) {
        TypedValue typedValue = new TypedValue();
        activity.getTheme().resolveAttribute(attrId, typedValue, true);
        return typedValue;
    }

    public static String getAvailaleSize(Context context, String path) {
        File file = new File(path);
        if (!file.exists())
            return null;
        StatFs stat = new StatFs(path);
        long blockSize = stat.getBlockSize();
        long availableBlocks = stat.getAvailableBlocks();
        return Formatter.formatFileSize(context, (availableBlocks * blockSize));
    }
}