setWallPaper

public class Photo extends Activity implements View.OnClickListener{
    private ImageView ivImage ;
    private Button btnSet;
    private ImageButton ibSelect;
    private Bitmap bitmap;
    private Intent i;
    final static int cameraData = 0;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.photo);
        initialVars();
        InputStream is = getResources().openRawResource(R.drawable.apple_logo);
        bitmap = BitmapFactory.decodeStream(is);
        btnSet.setOnClickListener(this);
        ibSelect.setOnClickListener(this);

    }

    private void initialVars() {
        ivImage = (ImageView)findViewById(R.id.ivImage);
        ibSelect = (ImageButton)findViewById(R.id.ibSelect);
        btnSet = (Button)findViewById(R.id.btnSetWall);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.btnSetWall:
                try {
                    WallpaperManager.getInstance(this).setBitmap(bitmap);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                break;
            case R.id.ibSelect:
                i = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(i,cameraData);
                break;
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK){
            Bundle imgdata = data.getExtras();
            bitmap = (Bitmap)imgdata.get("data");
            ivImage.setImageBitmap(bitmap);
        }
    }
}