This Android Java Program lets you create a Simple Animation Application.
Here is source code of the Program to create an Activity to create a Simple Animation Application. The program is successfully compiled and run on a Windows system using Eclipse Ide. The program output is also shown below.
Main Activity
package com.example.animation_activity; import android.os.Bundle; import android.annotation.SuppressLint; import android.app.Activity; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.view.Menu; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.View.OnTouchListener; public class MainActivity extends Activity implements OnTouchListener{ Ourview v; Bitmap bm , bitmap1; float x,y; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); v = new Ourview(this); v.setOnTouchListener(this); bm = BitmapFactory.decodeResource(getResources(), R.drawable.image4); bitmap1 = BitmapFactory.decodeResource(getResources(), R.drawable.mario2); x=0;y=0; setContentView(v); } @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); v.pause(); } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); v.resume(); } // surface view is going to be a thread now class Ourview extends SurfaceView implements Runnable { Thread th = null; SurfaceHolder holder; boolean var = false; sprite sprite_object; boolean sprite_loaded = false; public Ourview(Context context) { super(context); // TODO Auto-generated constructor stub holder = getHolder(); } @Override public void run() { // TODO Auto-generated method stub sprite_object = new sprite(Ourview.this, bitmap1); while (var = true) { // do stuff if (!holder.getSurface().isValid()) { continue; } if(!sprite_loaded){ sprite_loaded=true; } Canvas c = holder.lockCanvas();// while drawing on a canvas we // lock it and after drawing on // it we unlock it OnDraw(c); holder.unlockCanvasAndPost(c); } } @SuppressLint("WrongCall") void OnDraw(Canvas c){ c.drawARGB(255, 250, 150, 20);//rgb values c.drawBitmap(bm, x -(bm.getWidth()/2), y -(bm.getHeight()/2), null ); sprite_object.onDraw(c); } public void pause() { var = false; while (true) { try { th.join();// would pause the currently executing thread till // the user finishes its job } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } break; } th = null; } public void resume() { var = true; th = new Thread(this); th.start(); } } @Override public boolean onTouch(View v, MotionEvent me) { // TODO Auto-generated method stub //x=me.getX();//ontouch listener //y=me.getY(); try { Thread.sleep(80); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } switch (me.getAction()) { case MotionEvent.ACTION_DOWN: x= me.getX(); y=me.getY(); break; case MotionEvent.ACTION_UP: x= me.getX(); y=me.getY(); break; case MotionEvent.ACTION_MOVE: x= me.getX(); y=me.getY(); break; default: break; } return true; } }
sprite
package com.example.animation_activity; import com.example.animation_activity.MainActivity.Ourview; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Rect; public class sprite { int x,y,xspeed,yspeed,height,width; Bitmap b; Ourview our_view; int current_frame=0,direction=1; public sprite(Ourview ourview, Bitmap bitmap1) { // TODO Auto-generated constructor stub b=bitmap1; our_view=ourview; //4 rows height =b.getHeight()/4; //6 columns width = b.getWidth()/6; x=y=0; xspeed=30; yspeed=0; } public void onDraw(Canvas c) { // TODO Auto-generated method stub update(); int srcy=direction*height; Rect src = new Rect(0, srcy, width,srcy+ height); Rect dst = new Rect(x,y,x+width,y+height); c.drawBitmap(b,src, dst, null); } private void update() { // TODO Auto-generated method stub //1 right //3 left //down 2 //up 0 //facing down if(x>our_view.getWidth() -width -xspeed){ xspeed=0; yspeed=30; direction=2; } //left if(y>our_view.getHeight() - height -yspeed){ xspeed=-30; yspeed=0; direction=3; } //up if(x+xspeed<0){ x=0; xspeed=0; yspeed=-30; direction=0; } //right if(y+yspeed<0){ y=0; xspeed=30; yspeed=0; direction=1; } current_frame=++current_frame%6; x+=xspeed; y+=yspeed; } }
advertisement
advertisement
Sanfoundry Global Education & Learning Series – 100+ Java Android Tutorials.
If you wish to look at all Tutorials, go to Java Android Tutorials.
Get full code here-
Simple_Animation_Activity
Related Posts:
- Practice Information Technology MCQs
- Practice Programming MCQs
- Practice BCA MCQs
- Check Java Books
- Apply for Computer Science Internship