# Q9
### **Create an application with 3 buttons horizontally aligned, on selecting a button color of the screen will change.**
{% hint style="info" %}
**App Insights:**
Twitched the previous vertical layout code and switched the margin pattern and perform same functions as before
[Browse Source Code ](https://github.com/MJK618/AndroidProgramming/tree/main/Source%20Code%20for%20Questions/Q9_Three_Color_Buttons_Horizontal)
{% endhint %}
## **Code**
{% tabs %}
{% tab title="activity\_main.xml" %}
```markup
```
{% endtab %}
{% tab title="colors.xml" %}
```markup
#FFBB86FC
#FF6200EE
#FF3700B3
#FF03DAC5
#FF018786
#FF000000
#FFFFFFFF
#616161
#ff0000
#0000ff
#00ff00
```
{% endtab %}
{% tab title="MainActivity.java" %}
```java
package com.example.q9_three_color_buttons_horizontal;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends AppCompatActivity {
View view;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
view = this.getWindow().getDecorView();
view.setBackgroundResource(R.color.gray);
}
public void goRed(View v) {
view.setBackgroundResource(R.color.red);
}
public void goBlue(View v) {
view.setBackgroundResource(R.color.blue);
}
public void goGreen(View v) {
view.setBackgroundResource(R.color.green);
}
}
```
{% endtab %}
{% endtabs %}
{% hint style="success" %}
Download [Q9\_Three\_Color\_Buttons\_Horizontal.apk](https://github.com/MJK618/AndroidProgramming/raw/main/APK's/Q9_Three_Color_Buttons_Horizontal.apk) to Run and Test Locally
{% endhint %}
## **Output**
