Android Open Source - ivideo Utils

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Back to project page ivideo.
License

The source code is released under:
MIT License
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Java Source Code

package com.miscellapp.ivideo.util;
/*from ww w. j av a 2  s.c o m*/
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Collection;
import java.util.Collections;

/**
 * Created by chenjishi on 13-12-31.
 */
public class Utils {
    public static synchronized boolean didNetworkConnected(Context context) {
        ConnectivityManager conn = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (null != conn) {
            NetworkInfo info = conn.getActiveNetworkInfo();
            if (null != info) return info.isConnected();
        }
        return false;
    }

    public static synchronized boolean isWifiConnected(Context context) {
        ConnectivityManager connManager = (ConnectivityManager) context.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connManager != null) {
            NetworkInfo networkInfo = connManager.getActiveNetworkInfo();
            if (networkInfo != null) {
                int networkInfoType = networkInfo.getType();
                if (networkInfoType == ConnectivityManager.TYPE_WIFI || networkInfoType == ConnectivityManager.TYPE_ETHERNET) {
                    return networkInfo.isConnected();
                }
            }
        }
        return false;
    }

    public static String getVersionName(Context context) {
        String versionName = "";
        Context appContext = context.getApplicationContext();

        try {
            PackageManager pm = appContext.getPackageManager();
            PackageInfo pi = pm.getPackageInfo(appContext.getPackageName(), 0);
            versionName = pi.versionName;
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }

        return versionName;
    }

    public static int getVersionCode(Context context) {
        int versionCode = 0;
        Context appContext = context.getApplicationContext();

        try {
            PackageManager pm = appContext.getPackageManager();
            PackageInfo pi = pm.getPackageInfo(appContext.getPackageName(), 0);
            versionCode = pi.versionCode;
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }

        return versionCode;
    }

    public static <T> Collection<T> nullSafe(Collection<T> c) {
        return (null == c) ? Collections.<T>emptyList() : c;
    }

    public static String getMD5Str(String str) {
        MessageDigest messageDigest = null;
        try {
            messageDigest = MessageDigest.getInstance("MD5");
            messageDigest.reset();
            messageDigest.update(str.getBytes("UTF-8"));
        } catch (NoSuchAlgorithmException e) {
            System.out.println("NoSuchAlgorithmException caught!");
            System.exit(-1);
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        byte[] byteArray = messageDigest.digest();
        StringBuffer md5StrBuff = new StringBuffer();
        for (int i = 0; i < byteArray.length; i++) {
            if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)
                md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));
            else
                md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));
        }
        return md5StrBuff.toString();
    }

    public static boolean isEmpty(String s) {
        return null == s || s.length() == 0;
    }
}
Java Source Code List
