Android 一些系统参数的获取

//获取网络类型 2G/3G/WIFI
public String getNetworkType(){
String mNetWorkType = "";
ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = manager.getActiveNetworkInfo();

if (networkInfo != null && networkInfo.isConnected()) {
String type = networkInfo.getTypeName();

if (type.equalsIgnoreCase("WIFI")) { //WIFI网络
mNetWorkType = "WIFI";
} else if (type.equalsIgnoreCase("MOBILE")) {
String proxyHost = android.net.Proxy.getDefaultHost();

if (TextUtils.isEmpty(proxyHost) == true){
if (isFastMobileNetwork(this) == true){ //3G网络
mNetWorkType =  "3G";
}else{ //2G网络
mNetWorkType = "2G";
}
}else{ //wap网络
mNetWorkType = "wap";
}

}
} else { //无网络
mNetWorkType = "";
}

return mNetWorkType;
}

public boolean isFastMobileNetwork(Context context) {
TelephonyManager telephonyManager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
switch (telephonyManager.getNetworkType()) {
case TelephonyManager.NETWORK_TYPE_1xRTT:
return false; // ~ 50-100 kbps
case TelephonyManager.NETWORK_TYPE_CDMA:
return false; // ~ 14-64 kbps
case TelephonyManager.NETWORK_TYPE_EDGE:
return false; // ~ 50-100 kbps
case TelephonyManager.NETWORK_TYPE_EVDO_0:
return true; // ~ 400-1000 kbps
case TelephonyManager.NETWORK_TYPE_EVDO_A:
return true; // ~ 600-1400 kbps
case TelephonyManager.NETWORK_TYPE_GPRS:
return false; // ~ 100 kbps
case TelephonyManager.NETWORK_TYPE_HSDPA:
return true; // ~ 2-14 Mbps
case TelephonyManager.NETWORK_TYPE_HSPA:
return true; // ~ 700-1700 kbps
case TelephonyManager.NETWORK_TYPE_HSUPA:
return true; // ~ 1-23 Mbps
case TelephonyManager.NETWORK_TYPE_UMTS:
return true; // ~ 400-7000 kbps
case TelephonyManager.NETWORK_TYPE_EHRPD:
return true; // ~ 1-2 Mbps
case TelephonyManager.NETWORK_TYPE_EVDO_B:
return true; // ~ 5 Mbps
case TelephonyManager.NETWORK_TYPE_HSPAP:
return true; // ~ 10-20 Mbps
case TelephonyManager.NETWORK_TYPE_IDEN:
return false; // ~25 kbps
case TelephonyManager.NETWORK_TYPE_LTE:
return true; // ~ 10+ Mbps
case TelephonyManager.NETWORK_TYPE_UNKNOWN:
return false;
default:
return false;
}
}

//获取手机运营商
public String getProvidersName() {
String ProvidersName = null;
// 返回唯一的用户ID;就是这张卡的编号神马的
String IMSI = ((TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE)).getSubscriberId();
// IMSI号前面3位460是国家，紧接着后面2位00 02是中国移动，01是中国联通，03是中国电信。
if (IMSI.startsWith("46000") || IMSI.startsWith("46002")) {
ProvidersName = "中国移动";
} else if (IMSI.startsWith("46001")) {
ProvidersName = "中国联通";
} else if (IMSI.startsWith("46003")) {
ProvidersName = "中国电信";
}
return ProvidersName;
}

//获取屏幕分辨率
public String getScreenResolution(){
WindowManager windowManager = getWindowManager();
Display display = windowManager.getDefaultDisplay();
int screenWidth = display.getWidth();
int screenHeight = display.getHeight();

return screenWidth + "*" + screenHeight;
}