How To Set Layout Background Color Programmatically In Android

How to change the background color of the options menu in Android?

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This example demonstrates how to modify the background colour of the options bill of fare in Android.

Step i − Create a new projection in Android Studio, go to File ⇒ New Project and fill all required details to create a new projection.

Step 2 − Add the following lawmaking to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:layout_margin="16dp"    android:orientation="vertical"    tools:context=".MainActivity">    <TextView       android:layout_width="wrap_content"       android:layout_height="wrap_content"       android:text="Changing Option Menu Groundwork and text Color"       android:textColor="#1a7902"       android:textSize="20sp" />    <TextView       android:layout_width="fill_parent"       android:layout_height="fill_parent"       android:layout_marginTop="16dp"       android:autoLink="spider web"       android:gravity="center"       android:text="Hello World"       android:textSize="30sp" /> </LinearLayout>

Pace 3 − Add the post-obit lawmaking to res/carte du jour/menu_items.xml

<?xml version="1.0" encoding="utf-8"?> <card xmlns:android="http://schemas.android.com/apk/res/android"          xmlns:app="http://schemas.android.com/apk/res-motorcar">    <detail       android:id="@+id/option_menu_item_1"       android:orderInCategory="1"       android:title="Menu 1"       app:showAsAction="never" />    <detail       android:id="@+id/option_menu_item_2"       android:orderInCategory="two"       android:title="Menu 2"       app:showAsAction="never" />    <item       android:id="@+id/option_menu_item_3"       android:orderInCategory="3"       android:title="Menu 3"       app:showAsAction="never" /> </card>

Step iv − Add the post-obit code to res/values/styles.xml

<resources>    <fashion name="AppTheme" parent="Theme.AppCompat.Low-cal.DarkActionBar">       <particular name="colorPrimary">@color/colorPrimary</item>       <item proper name="colorPrimaryDark">@color/colorPrimaryDark</detail>       <detail name="colorAccent">@color/colorAccent</item>       <item name="android:textColor">@colour/colorPrimary</item>       <particular name="android:itemBackground">@color/skyBlue</particular>    </style> </resources>

Step 5 − Add the following code to res/values/colors.xml

<?xml version="1.0" encoding="utf-8"?> <resources>    <color proper name="colorPrimary">#008577</color>    <color name="colorPrimaryDark">#00574B</colour>    <color name="colorAccent">#D81B60</color>    <color name="skyBlue">#87CEEB</color> </resources>

Step 6 − Add the post-obit code to src/MainActivity.java

package com.app.sample; import androidx.appcompat.app.AppCompatActivity; import android.bone.Bundle; import android.view.Menu; import android.view.MenuItem; public form MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main);    }    @Override    public boolean onCreateOptionsMenu(Bill of fare menu) {       getMenuInflater().inflate(R.menu.menu_items, menu);       render true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {       switch (item.getItemId()) {          instance R.id.option_menu_item_1: render true;          case R.id.option_menu_item_2: return truthful;          case R.id.option_menu_item_3: return true;          default: return super.onOptionsItemSelected(item);       }    } }

Step 7 − Add the following code to Manifests/AndroidManifest.xml

<?xml version="one.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.app.sample">    <application       android:allowBackup="true"       android:icon="@mipmap/ic_launcher"       android:characterization="@cord/app_name"       android:roundIcon="@mipmap/ic_launcher_round"       android:supportsRtl="true"       android:theme="@style/AppTheme">       <activeness android:name=".MainActivity">          <intent-filter>             <action android:name="android.intent.action.MAIN" />             <category android:proper name="android.intent.category.LAUNCHER" />          </intent-filter>       </activity>    </application> </manifest>

Let'due south try to run your application. I assume you have continued your actual Android Mobile device with your computer. To run the app from the android studio, open 1 of your projection's activity files and click Run  icon from the toolbar. Select your mobile device as an option and so check your mobile device which will brandish your default screen −

Click hither to download the project code.

Published on xv-Nov-2019 11:49:58

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Source: https://www.tutorialspoint.com/how-to-change-the-background-color-of-the-options-menu-in-android

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