Detect phone type and network type

Android example to detect phone (CDMA, GSM, SIP or NONE) type and network type (CDMA, EDGE, GPRS, LTE...etc).

MainActivity.java

package com.blogspot.android_er.androidphone;

import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView textPhoneType = (TextView)findViewById(R.id.textphonetype);
        TextView textNetworkType = (TextView)findViewById(R.id.textnetworktype);

        TelephonyManager telephonyManager =
                (TelephonyManager) getApplicationContext()
                        .getSystemService(Context.TELEPHONY_SERVICE);

        if(telephonyManager == null){
            textPhoneType.setText("not supported TELEPHONY_SERVICE");
        }else{
            int phoneType = telephonyManager.getPhoneType();
            int networkType = telephonyManager.getNetworkType();

            textPhoneType.setText(
                    "Phone Type: " + phoneType + " " + decPhoneType(phoneType));
            textNetworkType.setText(
                    "Network Type: " + networkType + " " + decNetworkType(networkType));
        }
    }

    private String decPhoneType(int type){
        String result = "";

        switch(type){
            case TelephonyManager.PHONE_TYPE_CDMA:
                result = "CDMA";
                break;
            case TelephonyManager.PHONE_TYPE_GSM:
                result = "GSM";
                break;
            case TelephonyManager.PHONE_TYPE_NONE:
                result = "NONE";
                break;
            case TelephonyManager.PHONE_TYPE_SIP:
                result = "SLIP";
                break;
            default:
                result = "unknown type";
        }
        return result;
    }

    private String decNetworkType(int type){
        String result = "";

        switch(type){
            case TelephonyManager.NETWORK_TYPE_1xRTT:
                result = "1xRTT";
                break;
            case TelephonyManager.NETWORK_TYPE_CDMA:
                result = "CDMA";
                break;
            case TelephonyManager.NETWORK_TYPE_EDGE:
                result = "EDGE";
                break;
            case TelephonyManager.NETWORK_TYPE_EHRPD:
                result = "EHRPD";
                break;
            case TelephonyManager.NETWORK_TYPE_EVDO_0:
                result = "EVDO_0";
                break;
            case TelephonyManager.NETWORK_TYPE_EVDO_A:
                result = "EVDO_A";
                break;
            case TelephonyManager.NETWORK_TYPE_EVDO_B:
                result = "EVDO_B";
                break;
            case TelephonyManager.NETWORK_TYPE_GPRS:
                result = "GPRS";
                break;
            case TelephonyManager.NETWORK_TYPE_HSDPA:
                result = "HSDPA";
                break;
            case TelephonyManager.NETWORK_TYPE_HSPA:
                result = "HSPA";
                break;
            case TelephonyManager.NETWORK_TYPE_HSPAP:
                result = "HSPAP";
                break;
            case TelephonyManager.NETWORK_TYPE_HSUPA:
                result = "HSUPA";
                break;
            case TelephonyManager.NETWORK_TYPE_IDEN:
                result = "IDEN";
                break;
            case TelephonyManager.NETWORK_TYPE_LTE:
                result = "LTE";
                break;
            case TelephonyManager.NETWORK_TYPE_UMTS:
                result = "UMTS";
                break;
            case TelephonyManager.NETWORK_TYPE_UNKNOWN:
                result = "UNKNOWN";
                break;
            default:
                result = "unknown type";
        }
        return result;
    }
}

layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    android:orientation="vertical"
    tools:context="com.blogspot.android_er.androidphone.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/textphonetype"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <TextView
        android:id="@+id/textnetworktype"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

Get current setting of font scale

Android example to get current user preference for the scaling factor for fonts, relative to the base density scaling, by reading getResources().getConfiguration().fontScale.

MainActivity.java

package com.blogspot.android_er.androidfontscale;

import android.provider.Settings;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView prompt = (TextView)findViewById(R.id.prompt);

        float fontScale = getResources().getConfiguration().fontScale;
        prompt.setText("fontScale:: " + fontScale);

    }
}

layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    android:orientation="vertical"
    tools:context="com.blogspot.android_er.androidfontscale.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/prompt"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>