import android.annotation.TargetApi;
import android.app.ActivityManager;
import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Build;
import android.os.SystemClock;
import android.telephony.TelephonyManager;
import android.text.format.Formatter;
import
 
 android.util.DisplayMetrics;


public class DeviceUtils {

    private static final String TAG = DeviceUtils.class.getSimpleName();
    private static final String CMCC_ISP = "46000";//中國移動
    private static final String CMCC2_ISP = "46002";//中國移動
    private static final String CU_ISP = "46001";//中國聯通
    private
 
 static final String CT_ISP = "46003";//中國電信

    /**
     * 獲取裝置的系統版本號
     */
    public static int getDeviceSDK() {
        int sdk = Build.VERSION.SDK_INT;
        return sdk;
    }

    /**
     * 獲取裝置的型號
     */
    public static String getDeviceName() {
        String model = Build.MODEL;
        return
 
 model;
    }

    public static String getIMSI(Context context) {
        TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        String IMSI = telephonyManager.getSubscriberId();
        return IMSI;
    }

    public static String getIMEI(Context context) {
        TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        String IMEI = telephonyManager.getDeviceId();
        return IMEI;
    }

    /**
     * 獲取手機網路運營商型別
     *
     * @param context
     * @return
     */
    public static String getPhoneISP(Context context) {
        if (context == null) {
            return "";
        }
        TelephonyManager manager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        String teleCompany = "";
        String np = manager.getNetworkOperator();

        if (np != null) {
            if (np.equals(CMCC_ISP) || np.equals(CMCC2_ISP)) {
                teleCompany = "中國移動";
            } else if (np.startsWith(CU_ISP)) {
                teleCompany = "中國聯通";
            } else if (np.startsWith(CT_ISP)) {
                teleCompany = "中國電信";
            }
        }
        return teleCompany;
    }

    /**
     * 獲取螢幕資訊
     *
     * @param context
     * @return
     */
    public static DisplayMetrics getDisplayMetrics(Context context) {
        DisplayMetrics dm = context.getResources().getDisplayMetrics();
        return dm;
    }

    /**
     * 獲取/列印螢幕資訊
     *
     * @param context
     * @return
     */
    public static DisplayMetrics printDisplayInfo(Context context) {
        DisplayMetrics dm = getDisplayMetrics(context);
        StringBuilder sb = new StringBuilder();
        sb.append("\ndensity         :").append(dm.density);
        sb.append("\ndensityDpi      :").append(dm.densityDpi);
        sb.append("\nheightPixels    :").append(dm.heightPixels);
        sb.append("\nwidthPixels     :").append(dm.widthPixels);
        sb.append("\nscaledDensity   :").append(dm.scaledDensity);
        sb.append("\nxdpi            :").append(dm.xdpi);
        sb.append("\nydpi            :").append(dm.ydpi);
        LogUtils.i(TAG, sb.toString());
        return dm;
    }

    /**
     * 獲取系統當前可用記憶體大小
     *
     * @param context
     * @return
     */
    @TargetApi(Build.VERSION_CODES.CUPCAKE)
    public static String getAvailMemory(Context context) {
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        ActivityManager.MemoryInfo mi = new ActivityManager.MemoryInfo();
        am.getMemoryInfo(mi);
        return Formatter.formatFileSize(context, mi.availMem);// 將獲取的記憶體大小規格化
    }


    /**
     * 獲取 MAC 地址
     * 須配置android.permission.ACCESS_WIFI_STATE許可權
     */
    public static String getMacAddress(Context context) {
        //wifi mac地址
        WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        WifiInfo info = wifi.getConnectionInfo();
        String mac = info.getMacAddress();
        LogUtils.i(TAG, " MAC：" + mac);
        return mac;
    }

    /**
     * 獲取 開機時間
     */
    public static String getBootTimeString() {
        long ut = SystemClock.elapsedRealtime() / 1000;
        int h = (int) ((ut / 3600));
        int m = (int) ((ut / 60) % 60);
        LogUtils.i(TAG, h + ":" + m);
        return h + ":" + m;
    }
}