Android Gallery



Android Gallery



  • Static Gallery Creation in Android
  • Dynamic Gallery Creation in Android



1. Static Gallery Creation in Android

Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button. If you have any doubt regarding create a new project Click Here.
Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :

<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" >

   <Gallery
    android:id="@+id/myGallery"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:gravity="bottom" />

    <TextView
       android:id="@+id/textView1"
       android:textColor="#FF0000"
       android:textSize="20dp"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_below="@+id/myGallery"
       android:layout_centerHorizontal="true"
       android:layout_marginTop="25dp"
       android:text="Static Gallery Creation" />

    <TextView
       android:id="@+id/textView2"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_below="@+id/textView1"
       android:layout_centerHorizontal="true"
       android:layout_marginTop="30dp" />

    <ImageView
       android:id="@+id/imageView1"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_alignParentBottom="true"
       android:layout_marginBottom="30dp"
       android:layout_centerHorizontal="true" />
  
</RelativeLayout>

Step 3 : Open src -> package -> MainActivity.java and add following code :

 package com.gudivada.hemanthsomaraju;

 import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemSelectedListener;

 public class MainActivity extends Activity {

 TextView mySelection;
Gallery myGallery;
ImageView img;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

final int[] myImageIds = {
R.drawable.android,
R.drawable.amazon,
R.drawable.apple,
R.drawable.ask,
R.drawable.dropbox,
R.drawable.email,
R.drawable.fb,
R.drawable.google,
R.drawable.linkedin
};

mySelection = (TextView) findViewById(R.id.textView2);
myGallery = (Gallery) findViewById(R.id.myGallery);
img = (ImageView) findViewById(R.id.imageView1);

 myGallery.setAdapter(new ImageAdapter(this));

myGallery.setOnItemSelectedListener(new OnItemSelectedListener() {

 public void onItemSelected(AdapterView<?> parent, View v,
int position, long id) {

mySelection.setText(" selected option: " + position );

img.setImageResource(myImageIds[position]);
}

 public void onNothingSelected(AdapterView<?> parent) {

mySelection.setText("Nothing selected");
}
});
}

 public class ImageAdapter extends BaseAdapter {

 private Context myContext;

private int[] myImageIds = {
R.drawable.android,
R.drawable.amazon,
R.drawable.apple,
R.drawable.ask,
R.drawable.dropbox,
R.drawable.email,
R.drawable.fb,
R.drawable.google,
R.drawable.linkedin
};

 public ImageAdapter(Context c) {
this.myContext = c;
}

 public int getCount() {
return this.myImageIds.length;
}

 public Object getItem(int position) {
return position;
}

 public long getItemId(int position) {
return position;
}
// Returns a new ImageView to be displayed,
public View getView(int position, View convertView,
ViewGroup parent) {

 ImageView iv = new ImageView(this.myContext);
iv.setImageResource(this.myImageIds[position]);

 iv.setScaleType(ImageView.ScaleType.FIT_END);

// Set the Width & Height of the individual images
iv.setLayoutParams(new Gallery.LayoutParams(95, 70));

 return iv;
}
}
}
Step 4 : Open AndroidManifest.xml and add following code :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.gudivada.hemanthsomaraju"
    android:versionCode="1"
    android:versionName="1.0" >

     <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

     <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.gudivada.hemanthsomaraju.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>


Step 5 : Our output will be like this :

 







2. Dynamic Gallery Creation in Android


Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button. If you have any doubt regarding create a new project Click Here.

Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

   <TextView
       android:id="@+id/textView1"
       android:textColor="#FF0000"
       android:textSize="20dp"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_centerHorizontal="true"
       android:layout_marginTop="100dp"
       android:text="Dynamic Gallery Creation" />

   <TextView
       android:id="@+id/textView2"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_below="@+id/textView1"
       android:layout_centerHorizontal="true"
       android:layout_marginTop="30dp" />

   <ImageView
       android:id="@+id/imageView1"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_alignParentBottom="true"
       android:layout_marginBottom="30dp"
       android:layout_centerHorizontal="true" />
  
</RelativeLayout>


Step 3 : Open src -> package -> MainActivity.java and add following code :

package com.gudivada.hemanthsomaraju;

import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.RelativeLayout.LayoutParams;

public class MainActivity extends Activity {
RelativeLayout rl;
ImageView img;
Gallery gal;
TextView tv;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
     
        final int[] myImageIds = {
R.drawable.android,
R.drawable.amazon,
R.drawable.apple,
R.drawable.ask,
R.drawable.dropbox,
R.drawable.email,
R.drawable.fb,
R.drawable.google,
R.drawable.linkedin
};
     
        rl = (RelativeLayout) findViewById(R.id.rl);
        tv = (TextView) findViewById(R.id.textView2);
        img = (ImageView) findViewById(R.id.imageView1);
        gal = new Gallery(MainActivity.this);
     
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams
         ((int) LayoutParams.MATCH_PARENT, (int) LayoutParams.WRAP_CONTENT);
     
        params.addRule(RelativeLayout.ALIGN_PARENT_TOP);
        gal.setLayoutParams(params);
     
        rl.addView(gal);
     
        gal.setAdapter(new ImageAdapter(this));
     
        gal.setOnItemSelectedListener(new OnItemSelectedListener() {

@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
tv.setText("Selected Option : "+arg2);
img.setImageResource(myImageIds[arg2]);
}

@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
tv.setText("Nothing Selected");
}
});
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
}


class ImageAdapter extends BaseAdapter {
private Context myContext;
private int[] myImageIds = {
R.drawable.android,
R.drawable.amazon,
R.drawable.apple,
R.drawable.ask,
R.drawable.dropbox,
R.drawable.email,
R.drawable.fb,
R.drawable.google,
R.drawable.linkedin
};
public ImageAdapter(Context c) {
this.myContext = c;
}

@Override
public int getCount() {
// TODO Auto-generated method stub
return this.myImageIds.length;
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView iv = new ImageView(this.myContext);
iv.setImageResource(this.myImageIds[position]);

iv.setScaleType(ImageView.ScaleType.FIT_END);
// Set the Width & Height of the individual images
iv.setLayoutParams(new Gallery.LayoutParams(95, 70));

return iv;
}
}

Step 4 : Open AndroidManifest.xml and add following code :


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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.gudivada.hemanthsomaraju.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>

Step 5 : Our output will be like this :