Android Programming Tutorial 43 : ActionBar In Android

ActionBar:

ActionBar are added on the top of the Title bar in an Activity screen.

Action Bar in Android is used to provide navigation and to perform some actions.

In Android ActionBar Break up into 4 parts like Application ICON, View Control,

Action Buttons, OverFlow.

In the above figure its clearly seen that on Number 1 is an App Icon,

                                                                          2 View Control

                                                                          3 Action Buttons

                                                                          4 Overflow


OUT PUT Of The Tutorial:

   

Create Android Application:

• File >> New >> Android Application
• Enter Project name: ActionBarApp
• Package: com.ambilpursunil.newapp
• Keep other default selections, click Next until you reach Finish

                               

 1.Simply Copy and Past the Code which is display below in the  MainActivity.java 

package com.ambilpursunil.newapp;

import android.app.ActionBar;

import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.Toast;

public class MainActivity extends Activity {

            @Override

            protected void onCreate(Bundle savedInstanceState) {

                        super.onCreate(savedInstanceState);

                        setContentView(R.layout.activity_main);

                       

                        ActionBar actionBar = getActionBar();

                        //actionBar.setTitle("Hello");

            }

            @Override

            public boolean onCreateOptionsMenu(Menu menu) {

         // Inflate the menu; this adds items to the action bar if it is present.

                        getMenuInflater().inflate(R.menu.main, menu);

                        return true;

            }

            @Override

            public boolean onOptionsItemSelected(MenuItem item) {

                       

                        switch(item.getItemId()){

                       

                        case R.id.phone:

Toast.makeText(getApplicationContext(), "You Selected Phone",                                               Toast.LENGTH_SHORT).show();

                                    break;

                       

                        }

                       

                        return super.onOptionsItemSelected(item);

            }

}

 2.Simple Copy and Past the below code:  actvitiy_main.xml

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

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.addingactionbuttons.MainActivity" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/hello_world" />

</RelativeLayout>

3.Change the main.xml file which is located res>>main>>main.xml Copy and Past the below code: 

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

    xmlns:tools="http://schemas.android.com/tools"

    tools:context="com.example.addingactionbuttons.MainActivity" >

    <item

        android:id="@+id/phone"

        android:title="@string/phone"

        android:showAsAction="ifRoom|withText"

        android:icon="@drawable/phone"/>

   

    <item

        android:id="@+id/computer"

        android:title="@string/computer"

        android:showAsAction="always"

        android:icon="@drawable/computer"/>

   

    <item

        android:id="@+id/gamepad"

        android:title="@string/gamepad"

        android:showAsAction="always"

        android:icon="@drawable/gamepad"/>

   

    <item

        android:id="@+id/video"

        android:title="@string/video"

        android:showAsAction="ifRoom"

        android:icon="@drawable/video"/>

   

    <item

        android:id="@+id/email"

        android:title="@string/email"

        android:showAsAction="ifRoom"

        android:icon="@drawable/email"/>

   

    <item

        android:id="@+id/camera"

        android:title="@string/camera"

        android:showAsAction="always"

        android:icon="@drawable/camera"/>

</menu>

 4.Copy and past the code for manifest.xml

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

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

    package="com.ambilpursunil.newapp"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="18"

        android:targetSdkVersion="18" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name=".MainActivity"

            android:label="@string/app_name" >

       <intent-filter>

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

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

            </intent-filter>

        </activity>

            </application>

</manifest>

5.Right click on the project and Run As-->Android Application

OUT PUT Of The Tutorial:

   

OutPut:

When our application launch Just check.....it 

Please Send Your Comments To ambilpura.sunil@gmail.com

Stay Tune For Next Tutorial... Custom Toast In Android:

  

Android Programming Tutorial 42 : WebServices Using GET Method In Android

Create Android Application:

• File >> New >> Android Application
• Enter Project name: WebServicesUsingGETApp
• Package: com.ambilpursunil.newapp
• Keep other default selections, click Next until you reach Finish

                               

 1.Simply Copy and Past the Code which is display below in the  MainActivity.java 

package com.ambilpursunil.newapp;

import java.io.IOException;

import java.io.InputStream;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.protocol.BasicHttpContext;

import org.apache.http.protocol.HttpContext;

import android.app.Activity;

import android.os.AsyncTask;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

public class MainActivity extends Activity implements OnClickListener {

            Button my_button;

            @Override

            protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);

            findViewById(R.id.btn_REST).setOnClickListener(this);

             }

            @Override

            public void onClick(View v) {

            my_button = (Button) findViewById(R.id.btn_REST);

            my_button.setClickable(false);

            new GetDataRESTfull().execute();

            }

public class GetDataRESTfull extends AsyncTask<Void, Void, String> {

            protected String getASCIIContentFromEntity(HttpEntity entity)

            throws IllegalStateException, IOException {

            InputStream inputStream = entity.getContent();

            StringBuffer stringBuffer = new StringBuffer();

            int n = 1;

            while (n > 0) {

            byte[] b = new byte[4096];

            n = inputStream.read(b);

            if (n > 0)

            stringBuffer.append(new String(b, 0, n));

            }// while

            return stringBuffer.toString();

            }// getASCII

            @Override

            protected String doInBackground(Void... params) {

            HttpClient httpClient = new DefaultHttpClient();

            HttpContext httpContext = new BasicHttpContext();

            //Here we are Using GET Method 

             

            HttpGet httpGet = new HttpGet(

 "http://www.cheesejedi.com/rest_services/get_big_cheese.php?puzzle=1");

            String text = null;

            try {

HttpResponse httpResponse = httpClient.execute(httpGet,

            httpContext);

            HttpEntity httpEntity = httpResponse.getEntity();

            text = getASCIIContentFromEntity(httpEntity);

           } catch (Exception e) {

           e.getLocalizedMessage();

           }

           return text;

          }// doInBack

          @Override

          protected void onPostExecute(String result) {

          if (result != null) {

  EditText editTextREST = (EditText) findViewById(R.id.editTextREST);

          editTextREST.setText(result);

          }// if

          my_button.setClickable(true);

                        }// doPost

            }

}

 2.Simple Copy and Past the below code:  actvitiy_main.xml

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

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="RESTful WebServices"

        android:textAppearance="?android:attr/textAppearanceLarge"

        android:textColor="#176CEC"

        android:gravity="center" />

    <Button

        android:id="@+id/btn_REST"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="GET Data"

        android:layout_marginLeft="100dp"

        android:padding="14dp" />

    <EditText

        android:id="@+id/editTextREST"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:minLines="13"

        android:editable="false"

        android:textSize="12sp"

        android:maxLines="13"

        android:ems="10" />

</LinearLayout>

3.Copy and past the code for manifest.xml

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

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

    package="com.ambilpursunil.newapp"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="18"

        android:targetSdkVersion="18" />

    <uses-permission android:name="android.permission.INTERNET" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name=".MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

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

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

            </intent-filter>

        </activity>

            </application>

</manifest>

4.Right click on the project and Run As-->Android Application

OutPut:

When our application launch you will find a GET Button and a EditText simply click on the GET Button and see the output on the screen.

Please Send Your Comments To ambilpura.sunil@gmail.com

Stay Tune For Next Tutorial...  ActionBar In Android: