ANDROID IMAGE GALLERY
ImageGallery : image gallery is use to show images in sequence. it found in transition.
Create an android project.
step 1 :
open res/layout/activity_main.xml and write following code.
Layout xml file code:
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#000000"
android:orientation="vertical"
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=".MainActivity" >
android:id="@+id/gallery1"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
Step 2: create attrs.xml file under res/values folder.
Step 3: paste some images under res/drawable folder.
Now your application directory structure like this.
step 4:- java source code
package com.example.imgproject;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends Activity {
int imglist[] = {R.drawable.a,R.drawable.b,R.drawable.c,R.drawable.d,R.drawable.e};
Gallery gal;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gal = (Gallery)findViewById(R.id.gallery1);
ImgAdp iadp = new ImgAdp(MainActivity.this);
gal.setAdapter(iadp);
gal.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView arg0, View arg1, int pos,
long arg3) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "img "+pos+"click", Toast.LENGTH_LONG).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;
}
class ImgAdp extends BaseAdapter
{
Context mcon;
int itemBackground;
public ImgAdp(Context cont)
{
mcon =cont;
TypedArray a = obtainStyledAttributes(R.styleable.Gallery1);
itemBackground = a.getResourceId(
R.styleable.Gallery1_android_galleryItemBackground, 0);
a.recycle();
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return imglist.length;
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ImageView imageView;
if (convertView == null) {
imageView = new ImageView(mcon);
imageView.setImageResource(imglist[position]);
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
imageView.setLayoutParams(new Gallery.LayoutParams(150, 120));
}
else
{
imageView = (ImageView) convertView;
}
imageView.setBackgroundResource(itemBackground);
return imageView;
}
}
}
