获取android系统的一些功能

    public static String getLocalMacAddress() {
        WifiManager wifi = (WifiManager) PilotApp.getInstance().getSystemService(Context.WIFI_SERVICE);
        WifiInfo info = wifi.getConnectionInfo();
        return info.getMacAddress();
    }

    public static String getSystemVersion() {
        return android.os.Build.VERSION.RELEASE;
    }

    public static String getChannelID() {
        String channelId = "";

        try {
            ApplicationInfo info = PilotApp.getInstance().getPackageManager().getApplicationInfo(
                    PilotApp.getInstance().getPackageName(), PackageManager.GET_META_DATA);
            channelId = info.metaData.getString("UMENG_CHANNEL");
        } catch (Exception e) {

        }
        return channelId;
    }

    // 获取系统媒体音量
    public static int getAudioStreamVolumeForMusic(Context context) {
        AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
        return audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
    }

    // 是否为静音模式|振动模式
    public static boolean audioRingerModeIsSilentOrVibrate(Context context) {
        AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
        return audioManager.getRingerMode() == AudioManager.RINGER_MODE_SILENT
                || audioManager.getRingerMode() == AudioManager.RINGER_MODE_VIBRATE;
    }

//    public static int getScreenHeight(Context context) {
//        WindowManager wm = (WindowManager) context
//                .getSystemService(Context.WINDOW_SERVICE);
//        return wm.getDefaultDisplay().getHeight();
//    }
//
//    public static int getScreenWidth(Context context) {
//        WindowManager wm = (WindowManager) context
//                .getSystemService(Context.WINDOW_SERVICE);
//        return wm.getDefaultDisplay().getWidth();
//    }
    
    public static DisplayMetrics getWindowsWidthAndHigh(Activity context){
        DisplayMetrics metrics = new DisplayMetrics();
        context.getWindowManager().getDefaultDisplay().getMetrics(metrics);
        return metrics;
    }