diff --git a/example/.gitignore b/example/.gitignore
index dddc601..76f1acd 100644
--- a/example/.gitignore
+++ b/example/.gitignore
@@ -1,8 +1,6 @@
-.gradle
-.idea
+.*
 *.iml
 local.properties
-.externalNativeBuild
 *.iml
 build
 01.HelloWorld/01.HelloWorld
diff --git a/example/01.HelloWorld_Android/build.gradle b/example/01.HelloWorld_Android/build.gradle
index de27f8e..2604c8a 100644
--- a/example/01.HelloWorld_Android/build.gradle
+++ b/example/01.HelloWorld_Android/build.gradle
@@ -4,7 +4,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.4.2'
+        classpath 'com.android.tools.build:gradle:4.0.2'
     }
 }
 
@@ -18,19 +18,19 @@ allprojects {
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 29
-    buildToolsVersion "29.0.2"
+    compileSdkVersion 30
+    buildToolsVersion "30.0.2"
     defaultConfig {
         applicationId "pl.grupapracuj.hermes.helloworld"
         minSdkVersion 21
-        targetSdkVersion 29
+        targetSdkVersion 30
         versionCode 1
         versionName "1.0"
         externalNativeBuild {
             cmake {
                 arguments "-DANDROID_STL=c++_static"
                 abiFilters.addAll(["armeabi-v7a", "arm64-v8a", "x86", "x86_64"])
-                cppFlags.addAll(["-std=c++17", "-frtti", "-fexceptions", "-I${project.rootDir}/../..", "-I${project.rootDir}/../../include", "-I${project.rootDir}/../../depend/jsoncpp/include"])
+                cppFlags.addAll(["-std=c++17", "-frtti", "-fexceptions", "-I" + project.rootDir + "/../..", "-I" + project.rootDir + "/../../include", "-I" + project.rootDir + "/../../depend/jsoncpp/include"])
             }
         }
     }
diff --git a/example/01.HelloWorld_Android/gradle/wrapper/gradle-wrapper.properties b/example/01.HelloWorld_Android/gradle/wrapper/gradle-wrapper.properties
index 6d62751..ab5b783 100644
--- a/example/01.HelloWorld_Android/gradle/wrapper/gradle-wrapper.properties
+++ b/example/01.HelloWorld_Android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-all.zip
diff --git a/example/01.HelloWorld_Android/source/java/pl/grupapracuj/hermes/helloworld/ActivityMain.java b/example/01.HelloWorld_Android/source/java/pl/grupapracuj/hermes/helloworld/ActivityMain.java
index e6795d7..780e76d 100644
--- a/example/01.HelloWorld_Android/source/java/pl/grupapracuj/hermes/helloworld/ActivityMain.java
+++ b/example/01.HelloWorld_Android/source/java/pl/grupapracuj/hermes/helloworld/ActivityMain.java
@@ -6,7 +6,9 @@
 
 import android.app.Activity;
 import android.graphics.Color;
+import android.graphics.Insets;
 import android.graphics.Rect;
+import android.os.Build;
 import android.os.Bundle;
 import android.util.DisplayMetrics;
 import android.util.TypedValue;
@@ -14,6 +16,8 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.Window;
+import android.view.WindowInsets;
+import android.view.WindowMetrics;
 import android.widget.Button;
 import android.widget.FrameLayout;
 import android.widget.TextView;
@@ -72,9 +76,21 @@ private void callbackExecute(String pOutputText) {
     }
 
     private void buildLayout() {
-        DisplayMetrics displayMetrics = new DisplayMetrics();
-        getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
-        final int blockSize = displayMetrics.widthPixels / 10;
+        int width;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R)
+        {
+            WindowMetrics windowMetrics = getWindowManager().getCurrentWindowMetrics();
+            Insets insets = windowMetrics.getWindowInsets().getInsetsIgnoringVisibility(WindowInsets.Type.systemBars());
+            width = windowMetrics.getBounds().width() - insets.left - insets.right;
+        }
+        else
+        {
+            DisplayMetrics displayMetrics = new DisplayMetrics();
+            getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
+            width = displayMetrics.widthPixels;
+        }
+
+        final int blockSize = width / 10;
         final int orange = Color.rgb(255, 130, 28);
 
         FrameLayout layout = new FrameLayout(this);
@@ -89,7 +105,7 @@ private void buildLayout() {
         mTextView.setText("");
         layout.addView(mTextView);
         {
-            FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(displayMetrics.widthPixels - blockSize * 2, blockSize * 3);
+            FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(width - blockSize * 2, blockSize * 3);
             layoutParams.leftMargin = blockSize;
             layoutParams.topMargin = blockSize;
             mTextView.setLayoutParams(layoutParams);
@@ -108,7 +124,7 @@ private void buildLayout() {
             mButton.setPadding(0, (int)(mButton.getPaint().getFontMetrics().top - bounds.top - 0.5f) + blockSize / 4, 0, 0);
             mButton.setText(displayName);
 
-            FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(displayMetrics.widthPixels - blockSize * 2, (int)(blockSize * 1.5f));
+            FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(width - blockSize * 2, (int)(blockSize * 1.5f));
             layoutParams.leftMargin = blockSize;
             layoutParams.topMargin = blockSize * 5;
             mButton.setLayoutParams(layoutParams);
diff --git a/readme.txt b/readme.txt
index ff1caf4..01f2055 100755
--- a/readme.txt
+++ b/readme.txt
@@ -17,7 +17,7 @@ DESCRIPTION:
 
 VERSION:
 
-  1.2.0
+  1.2.1
 
 SUPPORTED PLATFORMS: