Android工具类-关于网络、状态的工具类

下方是一个很好的监测网络、状态的工具类

public class NetworkUtils {

	/**
	 * 网络是否可用
	 * 
	 * @param activity
	 * @return
	 */
	public static boolean isNetworkAvailable(Context context) {
		ConnectivityManager connectivity = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		if (connectivity == null) {
		} else {
			NetworkInfo[] info = connectivity.getAllNetworkInfo();
			if (info != null) {
				for (int i = 0; i < info.length; i++) {
					if (info[i].getState() == NetworkInfo.State.CONNECTED) {
						return true;
					}
				}
			}
		}
		return false;
	}


	/**
	 * Gps是否打开
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isGpsEnabled(Context context) {
		LocationManager locationManager = ((LocationManager) context
				.getSystemService(Context.LOCATION_SERVICE));
		List<String> accessibleProviders = locationManager.getProviders(true);
		return accessibleProviders != null && accessibleProviders.size() > 0;
	}

	/**
	 * wifi是否打开
	 */
	public static boolean isWifiEnabled(Context context) {
		ConnectivityManager mgrConn = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		TelephonyManager mgrTel = (TelephonyManager) context
				.getSystemService(Context.TELEPHONY_SERVICE);
		return ((mgrConn.getActiveNetworkInfo() != null && mgrConn
				.getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || mgrTel
				.getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS);
	}

	/**
	 * 判断当前网络是否是wifi网络
	 * if(activeNetInfo.getType()==ConnectivityManager.TYPE_MOBILE) { 
	 * 
	 * @param context
	 * @return boolean
	 */
	public static boolean isWifi(Context context) {
		ConnectivityManager connectivityManager = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
		if (activeNetInfo != null
				&& activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI) {
			return true;
		}
		return false;
	}

	/**
	 * 判断当前网络是否3G网络
	 * 
	 * @param context
	 * @return boolean
	 */
	public static boolean is3G(Context context) {
		ConnectivityManager connectivityManager = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
		if (activeNetInfo != null
				&& activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
			return true;
		}
		return false;
	}
}

以上方法均通过测试，tv_result为自设定的TextView。

				tv_result.append("网络是否可用:"+NetworkUtils.isNetworkAvailable(MainActivity.this)+"
");
				tv_result.append("GPS开关是否打开:"+NetworkUtils.isGpsEnabled(MainActivity.this)+"
");
				tv_result.append("是否为3G网络:"+NetworkUtils.is3G(MainActivity.this)+"
");
				tv_result.append("WIFI是否打开:"+NetworkUtils.isWifiEnabled(MainActivity.this)+"
");
				tv_result.append("是否为WIFI网络:"+NetworkUtils.isWifi(MainActivity.this)+"
");