Android Open Source - ElyTheme Silk

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Back to project page ElyTheme.

License

The source code is released under:

GNU General Public License

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Java Source Code

package com.afollestad.silk;
/*  w w w .  j av a2  s  . c  o m*/
import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Configuration;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

import java.util.List;

/**
 * Various convenience methods.
 *
 * @author Aidan Follestad (afollestad)
 */
public class Silk {

    /**
     * Checks if the device is currently online, works for both wifi and mobile networks.
     */
    public static boolean isOnline(Context context) {
        if (context == null)
            return false;
        boolean state = false;
        ConnectivityManager cm = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo wifiNetwork = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        if (wifiNetwork != null)
            state = wifiNetwork.isConnectedOrConnecting();
        NetworkInfo mobileNetwork = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        if (mobileNetwork != null)
            state = mobileNetwork.isConnectedOrConnecting();
        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        if (activeNetwork != null)
            state = activeNetwork.isConnectedOrConnecting();
        return state;
    }

    /**
     * Checks whether or not the calling app has permission to access the internet.
     */
    public static boolean hasInternetPermission(Context context) {
        return declaresPermission(context, Manifest.permission.INTERNET);
    }

    public static boolean declaresPermission(Context context, String permission) {
        int res = context.checkCallingOrSelfPermission(permission);
        return res == PackageManager.PERMISSION_GRANTED;
    }

    /**
     * Checks if there's any apps available to open a certain intent on the current device.
     */
    public static boolean isIntentAvailable(Context context, String action) {
        final PackageManager packageManager = context.getPackageManager();
        final Intent intent = new Intent(action);
        List<ResolveInfo> list = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
        return list.size() > 0;
    }

    /**
     * Detects whether or not the device is a tablet.
     */
    public static boolean isTablet(Context context) {
        return (context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE;
    }
}

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