Android 常用的几个有用的方法

        在Android开发过程中，有时候需要获取IP地址、mac地址、移动设备IP等，这里记录下方法，方便查找，也希望可以帮到需要的朋友。

1. 获取本地国家码

public static String getLocalCountry()
{
    String code = Locale.getDefault().getCountry();
    Log.d("country", code);
    return code;
}

2.  判定是否是中国

private static boolean isZhRCN() 
{
	if (Locale.getDefault().getLanguage().equalsIgnoreCase("zh")
				&& Locale.getDefault().getCountry().equalsIgnoreCase("CN") ) {
		return true;
	}

	return false;
}

3. 获取手机系统语言

public static String getSystemLanguage()
{
	String lan = Locale.getDefault().toString();
	Log.w("syslan", lan);
	if(isZhRCN())
		return "zh-Hans";
	else if (Locale.getDefault().getLanguage().equalsIgnoreCase("zh") && Locale.getDefault().getCountry().equalsIgnoreCase("hk"))
		return "zh-HK";
	else if(Locale.getDefault().getLanguage().equalsIgnoreCase("zh"))
		return "zh-Hant";

    return lan;
}

4. 获取移动设备本地IP

private static InetAddress getLocalInetAddress() 
{
	InetAddress ip = null;
	try {
		// 列举
		Enumeration en_netInterface = NetworkInterface
					.getNetworkInterfaces();
		while (en_netInterface.hasMoreElements()) {// 是否还有元素
			NetworkInterface ni = (NetworkInterface) en_netInterface
						.nextElement();// 得到下一个元素
			Enumeration en_ip = ni.getInetAddresses();// 得到一个ip地址的列举
			while (en_ip.hasMoreElements()) 
            {
				ip = en_ip.nextElement();
				if (!ip.isLoopbackAddress()
							&& ip.getHostAddress().indexOf(":") == -1)
					break;
				else
					ip = null;
			}

			if (ip != null) {
				break;
			}
		}
	} catch (SocketException e) {
		e.printStackTrace();
	}

	return ip;
}

5. 获取本地Mac地址

public static String getLocalMac(String ipAddress) throws SocketException,
		UnknownHostException 
{
	String strMacAddr = null;
	try {
		//获得IpD地址
		InetAddress ip = getLocalInetAddress();
		byte[] b = NetworkInterface.getByInetAddress(ip).getHardwareAddress();
		StringBuffer buffer = new StringBuffer();
		for (int i = 0; i < b.length; i++) {
			if (i != 0) {
				buffer.append(':');
			}
			String str = Integer.toHexString(b[i] & 0xFF);
			buffer.append(str.length() == 1 ? 0 + str : str);
		}
		strMacAddr = buffer.toString().toUpperCase();
	} catch (Exception e) {
        e.printStackTrace();
	}

	return strMacAddr;
}

6. 获取设备Mac地址

public static String getDeviceMac() {
	//获得IpD地址
	InetAddress ip = getLocalInetAddress();
	String ipAddress = ip.getHostAddress();
	String macAddress = null;
	try {
		macAddress = getLocalMac(ipAddress);
	} catch (SocketException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	} catch (UnknownHostException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
	return macAddress;
}

7. 获取设备token

public static byte[] getDeviceToken()
{
	byte[] devicetoken = null;

	// make sure you have READ_PHONE_STATE permission.
	{
		final String androidId = Secure.getString(activityInst.getContentResolver(), ANDROID_ID);
		if (androidId != null && androidId.length() > 0)
		{
			if (!androidId.equals("9774d56d682e549c") 
			&& !androidId.equals("754d1a720b957ce6")
			&& !androidId.equals("15742e48457c04d4")
			&& !androidId.equals("b68276f4353a908f"))
				devicetoken = androidId.getBytes();
		}
	}
	if (devicetoken == null)
	{
		final String deviceid = ((TelephonyManager) activityInst.getSystemService( Context.TELEPHONY_SERVICE )).getDeviceId();
		if (deviceid != null && deviceid.length() > 0)
		{
			devicetoken = deviceid.getBytes();
		}
	}

	if (devicetoken == null)
		devicetoken = Installation.id(activityInst);
	return devicetoken;
}

8. 获取版本号

public static String getVersionString()
{
	try {
		PackageInfo pi = activityInst.getPackageManager().getPackageInfo(activityInst.getPackageName(), 0);
		return pi.versionName;
	} catch (NameNotFoundException e) {
		Log.e(TAG, "failed to get version number");
	}
    return null;
}

9. 获取包名及设备型号

public static String getAndroidPackageName()
{
    return activityInst.getPackageName();
}

public static String getDeviceModel()
{
	return android.os.Build.MODEL;
}

public static String GetDeviceType()
{
	return android.os.Build.MODEL + " " + android.os.Build.VERSION.RELEASE;
}

10. 打开链接

public static void openLink(String url)
{
	if(url == null) return;
	if (url.startsWith("http://") || url.startsWith("https://")) {
		Intent fIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
		activityInst.startActivity(fIntent);
	}
}

11. 唤醒屏幕

@SuppressLint("InvalidWakeLockTag")
private static void setBoolean(String systemSettingKey, boolean enabled) {

	  PowerManager pManager = ((PowerManager) activityInst.getSystemService(POWER_SERVICE));  
         
	  if(enabled)
	  {
		  mWakeLock = pManager.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK  
	                | PowerManager.ON_AFTER_RELEASE, TAG);  
		  mWakeLock.acquire();
	  }
	  else
	  {
		  if (mWakeLock != null) {
	            Log.v(TAG, "Releasing wakelock");
	            try {
	            	mWakeLock.release();
	            	mWakeLock = null;
	            } catch (Throwable th) {
	                // ignoring this exception, probably wakeLock was already released
	            }
	        } 
		  
	  }

    Settings.System.putInt(mContentResolver,
            systemSettingKey, enabled ? 1 : 0);
	  
}