added isTablet method for iOS and Android

README.md

@@ -172,6 +172,6 @@ console.log("Timezone", DeviceInfo.getTimezone()); // e.g America/Mexico_City
 console.log("App Instance ID", DeviceInfo.getInstanceID()); // ANDROID ONLY - see https://developers.google.com/instance-id/
 
 console.log("App is running in emulator", DeviceInfo.isEmulator()); // if app is running in emulator return true
-```
-
 
+console.log("App is running on a tablet", DeviceInfo.isTablet()); // if app is running on a tablet return true
+```

RNDeviceInfo/RNDeviceInfo.m

@@ -157,6 +157,11 @@ RCT_EXPORT_MODULE()
   return [self.deviceName isEqual: @"Simulator"];
 }
 
+- (bool) isTablet
+{
+  return [[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad;
+}
+
 - (NSDictionary *)constantsToExport
 {
     UIDevice *currentDevice = [UIDevice currentDevice];
@@ -180,6 +185,7 @@ RCT_EXPORT_MODULE()
              @"userAgent": self.userAgent,
              @"timezone": self.timezone,
              @"isEmulator": @(self.isEmulator),
+             @"isTablet": @(self.isTablet),
              };
 }
 

android/src/main/java/com/learnium/RNDeviceInfo/RNDeviceModule.java

@@ -3,6 +3,7 @@ package com.learnium.RNDeviceInfo;
 import android.bluetooth.BluetoothAdapter;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
+import android.content.res.Configuration;
 import android.os.Build;
 import android.provider.Settings.Secure;
 
@@ -63,6 +64,11 @@ public class RNDeviceModule extends ReactContextBaseJavaModule {
       || "google_sdk".equals(Build.PRODUCT);
   }
 
+  private Boolean isTablet() {
+    int layout = getReactApplicationContext().getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK;
+    return layout == Configuration.SCREENLAYOUT_SIZE_LARGE || layout == Configuration.SCREENLAYOUT_SIZE_XLARGE;
+  }
+
   @Override
   public @Nullable Map<String, Object> getConstants() {
     HashMap<String, Object> constants = new HashMap<String, Object>();
@@ -106,6 +112,7 @@ public class RNDeviceModule extends ReactContextBaseJavaModule {
     constants.put("userAgent", System.getProperty("http.agent"));
     constants.put("timezone", TimeZone.getDefault().getID());
     constants.put("isEmulator", this.isEmulator());
+    constants.put("isTablet", this.isTablet());
     return constants;
   }
 }

deviceinfo.js

@@ -59,4 +59,7 @@ module.exports = {
   isEmulator: function() {
     return RNDeviceInfo.isEmulator;
   },
+  isTablet: function() {
+    return RNDeviceInfo.isTablet;
+  },
 };