Skip to main content

Simple Gallery Application In Android

Here is simple gallery application.Copy and download the code and try it out.....
 
public class mygalleryactivity extends Activity {
 
 Integer[] imageIDs = {
   R.drawable.pic1,
   R.drawable.pic2,
   R.drawable.pic3,
   R.drawable.pic4,
   R.drawable.pic5,
   R.drawable.pic6,
   R.drawable.pic7
   };
 Gallery gallery;
   
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        gallery=(Gallery) findViewById(R.id.Gallery01);
        gallery.setAdapter(new ImageAdapter(this));
        gallery.setOnItemClickListener(new OnItemClickListener() 
        {

   public void onItemClick(AdapterView parent, View v, int position ,long id) {
    // TODO Auto-generated method stub
    Toast.makeText(getBaseContext(),
      "pic" + (position + 1) + "selected",
      Toast.LENGTH_SHORT).show();
    ImageView imageView =(ImageView) findViewById(R.id.image1);
    imageView.setImageResource(imageIDs[position]);
   }
  });    }
    
    public class ImageAdapter extends BaseAdapter
 {
  Context context;
  int itemBackground;
  
  public ImageAdapter(Context c)
  {
   context = c;
    //---setting the style---
   TypedArray a = obtainStyledAttributes(R.styleable.Gallery1);
   itemBackground = a.getResourceId(R.styleable.Gallery1_android_galleryItemBackground,0);
   a.recycle();
  }
    //---returns the number of images--- 
  public int getCount() 
  {
   System.out.println(imageIDs.length);
     return imageIDs.length;
     
  }
 //---returns the item---
  public Object getItem(int position)
  {
     return position;
  }
 //---returns the ID of an item---
  public long getItemId(int position) 
  {
     return position;
  }
 //---returns an ImageView view---
  
  public View getView(int position, View convertView,ViewGroup parent)
  {
    ImageView imageView;
    if (convertView == null) {
      imageView = new ImageView(context);
      imageView.setImageResource(imageIDs[position]);
      imageView.setScaleType(
      ImageView.ScaleType.FIT_XY);
      imageView.setLayoutParams(
        new Gallery.LayoutParams(150, 120));
    } else {
      imageView = (ImageView) convertView;
    }
    
 imageView.setBackgroundResource(itemBackground);
 return imageView;
  }}}  

            

Comments

Popular posts from this blog

Passing Images between Activities in Android

in First Activity:
Intent intent=new Intent(FirstClass.this, SecondClass.class); Bundle bundle=new Bundle(); bundle.putInt("image",R.drawable.ic_launcher); intent.putExtras(bundle); startActivity(intent); in Second Acticity:
Bundle bundle=this.getIntent().getExtras(); int pic=bundle.getInt("image"); v.setImageResource(pic);another method:
in First Activity:
Drawable drawable=imgv.getDrawable(); Bitmap bitmap= ((BitmapDrawable)drawable).getBitmap(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos); byte[] b = baos.toByteArray(); Intent intent=new Intent(Passimage.this,myclass.class); intent.putExtra("picture", b); startActivity(intent); in Second Acticity:
Bundle extras = getIntent().getExtras(); byte[] b = extras.getByteArray("picture"); Bitmap bmp = BitmapFactory.decodeByteArray(b, 0, b.length); Image…

Get a single record from SQLite in ANDROID

For COMPLETE TUTORIALS see here :
in DATABASE HELPER class: String[] coloumns = new String[] { KEY_ROWID, KEY_NAME, KEY_NICKNAME }; // calling elements in an array Cursor c = db.query(DATABASE_TABLE, coloumns, KEY_ROWID + "=" + l,null, null, null, null); if (c != null) { c.moveToFirst(); String name = c.getString(1); // since name is in position 1 ie second coloumn return name; } return null; in sqlite.java : String s =editinfo.getText().toString(); long l=Long.parseLong(s); DBAdapter adapter=new DBAdapter(SQliteExample.this); adapter.open(); String returnedname=adapter.returnName(l); String returnednickname=adapter.returnickname(l); adapter.close(); editName.setText(returnedname); editNickName.setText(returnednickname);

How To Finish All Previous Activities in ANDROID ?

Some times we may need to close previous all activities before calling an intent, so that the previous activity do not loads on clicking the Android back button.Here is a simple sniffet for it.. Intent intent = new Intent(getApplicationContext(), MainClass.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(intent);