I am working on frame animation in which i am using thread but thread is throwing me error .
my code is as follow ….
public class Newton_LawsActivity extends Activity implements OnTouchListener, OnGestureListener,OnDoubleTapListener {
/** Called when the activity is first created. */
OnTouchListener l;
ImageView animation;
ImageView hideimage;
TextView t;
Thread timer;
int Rid;
double pixel;
String law="null";
private GestureDetector gestureDetector;
float x,y;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
gestureDetector = new GestureDetector(this);
// the frame-by-frame animation defined as a xml file within the drawable folder
animation = (ImageView)findViewById(R.id.image);
//animation.setBackgroundResource(R.drawable.anatomy_5);
hideimage=(ImageView)findViewById(R.id.imagein);
t=(TextView) findViewById(R.id.t);
animation.setBackgroundResource(R.anim.startanimation);
final AnimationDrawable newtonAnimation = (AnimationDrawable) animation.getBackground();
AnimationStart(newtonAnimation);
animation.setOnTouchListener(this);
}
public void AnimationStart(final AnimationDrawable newanimation){
timer=new Thread(){
@Override
public void run(){
try{
}catch(Exception e){}
finally{
Newton_LawsActivity.this.runOnUiThread(new Runnable() {
public void run(){
newanimation.start();
}});
}
}
};
timer.start();
}
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
Toast.makeText(this, "animation", Toast.LENGTH_LONG).show();
return gestureDetector.onTouchEvent(event);
}
private void animationswitch(float x, float y) {
// TODO Auto-generated method stub
pixel = getmaskpixel(x,y,animation,hideimage);
Log.w("DEBUG","which is null:pixel" + pixel );
if (pixel==-583672){
animation.setBackgroundResource(R.anim.firstlaw_01);
final AnimationDrawable firstlaw_01 = (AnimationDrawable) animation.getBackground();
law="firstlaw_02";
firstlaw_01.start();
animationstop_01();
}
t.setText(Double.toString(pixel));
}
private double getmaskpixel(float x, float y, ImageView view,ImageView hideimage) {
// TODO Auto-generated method stub
Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.touchnewtonfinal415);
int width = bm.getWidth();
int height = bm.getHeight();
float scaleWidth = ((float) view.getWidth()) / width;
float scaleHeight = ((float) view.getHeight()) / height;
// create a matrix for the manipulation
Matrix matrix = new Matrix();
// resize the bit map
matrix.postScale(scaleWidth, scaleHeight);
// matrix.postRotate(90);
// recreate the new Bitmap
Bitmap bitmap = Bitmap.createBitmap(bm, 0, 0, width, height,matrix, false);
Log.w("DEBUG","which is null:image " + hideimage.getWidth() + " OR " +hideimage.getHeight() );
double bmWidth = view.getWidth();
double bmHeight = view.getHeight();
if ( x < 0 || y < 0 || x > hideimage.getWidth() || y >hideimage.getHeight()){
return 0; //Invalid, return 0
}else{
//Convert touched x, y on View to on Bitmap
int xBm = (int)(x * (bmWidth / hideimage.getWidth()));
int yBm = (int)(y * (bmHeight / hideimage.getHeight()));
return bitmap.getPixel((int)xBm,(int) yBm);
}
}
public boolean onSingleTapUp(MotionEvent e) {
return false;
// TODO Auto-generated method stub
}
@Override
public boolean onDown(MotionEvent arg0) {
// TODO Auto-generated method stub
return true;
}
@Override
public boolean onFling(MotionEvent arg0, MotionEvent arg1, float arg2,
float arg3) {
// TODO Auto-generated method stub
return false;
}
@Override
public void onLongPress(MotionEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public boolean onScroll(MotionEvent arg0, MotionEvent arg1, float arg2,
float arg3) {
// TODO Auto-generated method stub
return false;
}
@Override
public void onShowPress(MotionEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public boolean onDoubleTap(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean onDoubleTapEvent(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
// TODO Auto-generated method stub
x=e.getX();
y= e.getY();
Log.w("DEBUG","which is null:image " + x + " OR " +y);
animationswitch(x, y);
return true;
}
void animationstop_01(){
if(law=="firstlaw_02"){
timer=new Thread(){
@Override
public void run(){
try{
Thread.sleep(8750);
}catch(Exception e){}
finally{
Log.w("debug","it is firstlaw_02");
animation.setBackgroundResource(R.anim.firstlaw_02);
final AnimationDrawable firstlaw_02 = (AnimationDrawable) animation.getBackground();
law="firstlaw_03";
AnimationStart(firstlaw_02);
}};
};
timer.start();
}
}
}
it is throwing me following error..
06-06 14:15:00.668: E/AndroidRuntime(966): FATAL EXCEPTION: Thread-10
06-06 14:15:00.668: E/AndroidRuntime(966): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
06-06 14:15:00.668: E/AndroidRuntime(966): at android.view.ViewRoot.checkThread(ViewRoot.java:2802)
06-06 14:15:00.668: E/AndroidRuntime(966): at android.view.ViewRoot.invalidateChild(ViewRoot.java:607)
06-06 14:15:00.668: E/AndroidRuntime(966): at android.view.ViewRoot.invalidateChildInParent(ViewRoot.java:633)
06-06 14:15:00.668: E/AndroidRuntime(966): at android.view.ViewGroup.invalidateChild(ViewGroup.java:2505)
06-06 14:15:00.668: E/AndroidRuntime(966): at android.view.View.invalidate(View.java:5139)
06-06 14:15:00.668: E/AndroidRuntime(966): at android.view.View.setBackgroundDrawable(View.java:7486)
06-06 14:15:00.668: E/AndroidRuntime(966): at android.view.View.setBackgroundResource(View.java:7395)
06-06 14:15:00.668: E/AndroidRuntime(966): at Newtons.law.Newton_LawsActivity$2.run(Newton_LawsActivity.java:183)
Change your
animationstop_01method to: