KeyEvent-----------control aircraft up and down flight--------------------

Two java. The first one is responsible for drawing the aircraft, the main activity is responsible for controlling the aircraft's initial coordinates and flight, without layout.

------------------Draw the plane---------------------------

Planeview.java

 package Com.example.admin.webchanjian; 
 
 Import Android.content.Context; 
 Import Android.graphics.Bitmap; 
 Import android.graphics.BitmapFactory; 
 Import Android.graphics.Canvas; 
 Import Android.graphics.Paint; 
 Import Android.view.View; 
 
/** 
 * Created by admin in 2016/10/6. 
 */
 public class Plainview extends View {
 Public float Curre NtX; 
 Public float currenty; 
 Bitmap plane;        
 Public Plainview (context context) {
 Super (context); 
 Plane= Bitmapfactory.decoderesource (Context.getresources (), R.drawable.plane); 
 Setfocusable (TRUE);        
} 
 @Override 
 public void OnDraw (canvas canvas) {
 Super.ondraw (canvas); 
 Paint p=new paint (); 
 Canvas.drawbitmap (plane,currentx,currenty,p); 
} 
} 
 
 
-----------------------------control aircraft Flight--------------------
 
 
 Mainactivity.java 
 
 

-------------------Playing Plane------------------------------
private int speed=10;
@Override
protected void OnCreate (@Nullable Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Remove Window Caption
Requestwindowfeature (Window.feature_no_title);
Full Screen display
GetWindow (). SetFlags (Windowmanager.layoutparams.flag_fullscreen,windowmanager.layoutparams.flag_fullscreen);
Creating Planeview Components
Final Plainview Plainview=new Plainview (this);
Setcontentview (Plainview);
Plainview.setbackgroundresource (R.drawable.back);
Get window Manager
WindowManager Windowmanager=getwindowmanager ();
Display Display=windowmanager.getdefaultdisplay ();
Displaymetrics displaymetrics=new displaymetrics ();
Get screen width and height
Display.getmetrics (Displaymetrics);
Set the initial position of the plane
PLAINVIEW.CURRENTX=DISPLAYMETRICS.WIDTHPIXELS/2;
plainview.currenty=displaymetrics.heightpixels-40;
The keyboard event binding listener for the Planeview component
Plainview.setonkeylistener (New View.onkeylistener () {
@Override
public boolean OnKey (View v, int keycode, keyevent event) {
Switch (Event.getkeycode ()) {
Move Down
Case KEYEVENT.KEYCODE_S:
Plainview.currenty+=speed;
Break
Move Up
Case KEYEVENT.KEYCODE_W:
Plainview.currenty-=speed;
Break
Move left
Case KEYEVENT.KEYCODE_A:
Plainview.currentx-=speed;
Break
Case KEYEVENT.KEYCODE_D:
Plainview.currentx+=speed;
Break
}
Notifies the Planeview component to redraw
Plainview.invalidate ();
return true;
}
});

}

KeyEvent-----------control aircraft up and down flight--------------------