Sunday, February 1, 2015

How To Use Image Button In Android

Introduction:-
In this tutorial I'll show you how to use image button in android.

Implementation:-

1. Create New Android Project

  • Click File > New > New Android Project


  • Add image button in your activity_main.xml file


<ImageButton
        android:id="@+id/imageButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:src="@drawable/ic_launcher" />

  • Add image button listener and toast message to show image button is clicked in your Mainactivity.xml
private ImageButton button;

//Add image button listener
        button = (ImageButton) findViewById(R.id.imageButton1);
        button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Add toast message to show image button clicked
Toast.makeText(getApplicationContext(), getResources().getString(R.string.toast), Toast.LENGTH_SHORT).show();
}
});

  • Add in string.xml
    <string name="image_button">Image Button</string>
    <string name="toast">Image Button clicked</string>

2. MainActivity.java (paste this code in your MainActivity.java file)

package com.example.imagebuttonexample;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {
private ImageButton button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        //Add image button listener
        button = (ImageButton) findViewById(R.id.imageButton1);
        button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Add toast message to show image button clicked
Toast.makeText(getApplicationContext(), getResources().getString(R.string.toast), Toast.LENGTH_SHORT).show();
}
});
    }


    @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) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}


3. activity_main.xml (paste this code in your activity_main.xml file)

<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.imagebuttonexample.MainActivity" >

    <ImageButton
        android:id="@+id/imageButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:src="@drawable/ic_launcher" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/imageButton1"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="38dp"
        android:text="@string/image_button" />

</RelativeLayout>

4. string.xml (paste this code in your string.xml file)

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

    <string name="app_name">Image Button Example</string>
    <string name="image_button">Image Button</string>
    <string name="action_settings">Settings</string>
    <string name="toast">Image Button clicked</string>

</resources>

5. AndroidMenifest.xml 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.imagebuttonexample"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <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>


Now run your application

Output:-





You can also download full source code .zip file.

You can also download .apk file.






How To Use Toast Message In Android

Introduction:-
In this tutorial I'll show you how to use toast message in android.

Video Tutorial:-



Implementation:-

Create New Android Project

1. Click File > New > Android Application Project


  • Add button in your activity_main.xml file

<Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="200dp"
        android:text="@string/button" />


  • Add listener  in your MainActivity.java file and show toast on click


private Button button;

 //Add button listener
        button = (Button) findViewById(R.id.button1);
        button.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
//show toast on click
Toast.makeText(getApplicationContext(), getResources().getString(R.string.toast), Toast.LENGTH_SHORT).show();
}
});

2. MainActivity.java (paste this code in your MainActivity.java)

package com.example.toastexample;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {
private Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
     
        //Add button listener
        button = (Button) findViewById(R.id.button1);
        button.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
//show toast on click
Toast.makeText(getApplicationContext(), getResources().getString(R.string.toast), Toast.LENGTH_SHORT).show();
}
});
    }


    @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) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

3. activity_main.xml (paste this code in your activity_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.toastexample.MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="144dp"
        android:text="@string/hello_world" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:text="@string/button" />

</RelativeLayout>

4. string.xml (paste this code in your string.xml file)

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

    <string name="app_name">ToastExample</string>
    <string name="hello_world">Click to Show Toast</string>
    <string name="action_settings">Settings</string>
    <string name="button">Show Toast</string>
    <string name="toast">Button Clicked</string>

</resources>


5. AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.toastexample"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <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>

Now run your application

Output:-





You can also download full source code .zip file.
Download

You can also download .apk file.
Download