android linear layout center horizontal and vertical example

android linear layout center horizontal and vertical example

In this Article Today learn android Studio verticle and horizontal linear layout. linear layout using the android studio there are verticle and horizontal types to the layout in android. 

A layout defines the visual structure for a user interface, such as the UI for an activity or app widget. You can declare a layout in two ways:

• Declare UI elements in XML. Android provides a straightforward XML vocabulary that corresponds to the View classes and subclasses, such as those for widgets and layouts.
• Instantiate layout elements at runtime. Your application can create View and ViewGroup objects (and manipulate their properties) programmatically.

 

for the more information, linear layout visit the google developer: https://developer.android.com/

following the android linear layout verticle and horizontal example:

1.MainActivity.java:

package com.akash.linear_layout;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    Button btnloginv,btnregisterv,btnresetv;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        btnloginv=(Button)findViewById(R.id.btnloginv);

        btnregisterv=(Button)findViewById(R.id.btnregisterv);

        btnresetv=(Button)findViewById(R.id.btnresetv);

        btnloginv.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                //  put here your code for button

                Intent i =new Intent(MainActivity.this,Horizontal.class);

                startActivity(i);

            }

        });

        btnregisterv.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                //  put here your code for button

            }

        });

        btnresetv.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                //  put here your code for button

            }

        });

    }

}

2.activity_main:

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout 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"

    tools:context=".MainActivity">

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="vertical"

        tools:ignore="MissingConstraints">

        <Button

            android:id="@+id/btnloginv"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="Login"/>

        <Button

            android:id="@+id/btnregisterv"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="Register"/>

        <Button

            android:id="@+id/btnresetv"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="Reset"/>

    </LinearLayout>

</android.support.constraint.ConstraintLayout>

3.Horizontal.java:

package com.akash.linear_layout;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class Horizontal extends AppCompatActivity {

Button btnlogin,btnregister,btnreset;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_horizontal);

        btnlogin=(Button)findViewById(R.id.btnlogin);

        btnregister=(Button)findViewById(R.id.btnregister);

        btnreset=(Button)findViewById(R.id.btnreset);

        btnlogin.setOnClickListener(new View.OnClickListener() {

       @Override

    public void onClick(View v) {

        //  put here your code for button

        }

        });

        btnregister.setOnClickListener(new View.OnClickListener() {

    @Override

     public void onClick(View v) {

        //  put here your code for button

        }

        });

        btnreset.setOnClickListener(new View.OnClickListener() {

     @Override

    public void onClick(View v) {

        //  put here your code for button

        }

        });

        }

        }

4.activity_horizontal:

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout 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"

    tools:context=".Horizontal">

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal">

        <Button

            android:id="@+id/btnlogin"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Login"/>

        <Button

            android:id="@+id/btnregister"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Register"/>

        <Button

            android:id="@+id/btnreset"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Reset"/>

    </LinearLayout>

</android.support.constraint.ConstraintLayout>

5.AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.akash.linear_layout">

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:roundIcon="@mipmap/ic_launcher_round"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

        <activity android:name=".Horizontal"></activity>

        <activity android:name=".MainActivity">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

6.Output: