Hi!
I want to program a game where an image should move from the top to
the bottom.
Everytime, I start my game, I get the following error. In the
quellcode, I marked the line, where I get the error.
I have some questions:
1) How can I solve the problem?
2) What does "synchronized" in private synchronized void doDraw
() mean?
Greetings,
masr
Here is the error I get:
Leonard Frog [Android Application]
DalvikVM[localhost:8613]
Thread [<3> main] (Running)
Thread [<15> Binder Thread #3] (Running)
Thread [<13> Binder Thread #2] (Running)
Thread [<11> Binder Thread #1] (Running)
Thread [<17> Thread-9] (Suspended (exception ViewRoot
$CalledFromWrongThreadException))
LeonardFrog.doDraw() line: 78
LeonardFrog.access$2(LeonardFrog) line: 76
LeonardFrog$AnimationLoop.run() line: 151
Thread.run() line: 1058
Here is my game:
public class GoodGame extends Activity
{
private ImageView image1;
private int image1_y;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
image1 = (ImageView) findViewById(R.id.ImageView02);
image1_y=0;
(new Thread(new AnimationLoop())).start();
}
private synchronized void updatePhysics()
{
image1_y++;
}
private synchronized void doDraw()
{
//#####################HERE I GET THE
ERROR###############################
image1.layout(image1.getLeft(),image1_y,image1.getRight
(),image1.getBottom());
}
class AnimationLoop implements Runnable
{
public void run()
{
while(true)
{
while(running)
{
try
{
Thread.sleep(100);
}
catch(InterruptedException ex) {}
updatePhysics();
doDraw();
}
}
}
}
}
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