When you set the animation on your View, set the start time of the Animation to AnimationUtils.currentAnimationTimeMillis(). Otherwise, the start time will be the first time your View is drawn, which is the first time your View appears on screen.
On Thu, Jun 10, 2010 at 6:55 AM, funnything <[email protected]> wrote: > Hi. > When I apply some animation to the view, which is out of window, the > animation not start immediately. > And then, I scroll the screen to show the animation target view, the > animation will start. > I hope to the animation will start immediately when it apply. Any > ideas? > Bellow is sample code. Thank you. > > public class AnimationValidationActivity extends Activity { > private ViewSwitcher _viewSwitcher; > private Button _button; > > /** > * utility method for animation > */ > private Animation buildTranslateAnimation( float fromXDelta , > float toXDelta , float fromYDelta , float toYDelta ) { > Animation ret = new TranslateAnimation( fromXDelta , > toXDelta , fromYDelta , toYDelta ); > ret.setDuration( 1000 ); > > return ret; > } > > /** > * build view in place of layout.xml > */ > private View buildView() { > ScrollView ret = new ScrollView( this ); > ret.setLayoutParams( new > LinearLayout.LayoutParams( LinearLayout.LayoutParams.FILL_PARENT , > LinearLayout.LayoutParams.WRAP_CONTENT ) ); > > LinearLayout parent = new LinearLayout( this ); > parent.setLayoutParams( new > LinearLayout.LayoutParams( LinearLayout.LayoutParams.FILL_PARENT , > LinearLayout.LayoutParams.WRAP_CONTENT ) ); > parent.setOrientation( LinearLayout.VERTICAL ); > ret.addView( parent ); > > _viewSwitcher = new ViewSwitcher( this ); > _viewSwitcher.setLayoutParams( new > LinearLayout.LayoutParams( LinearLayout.LayoutParams.FILL_PARENT , > 100 ) ); > parent.addView( _viewSwitcher ); > > View spacer = new View( this ); > spacer.setLayoutParams( new > LinearLayout.LayoutParams( LinearLayout.LayoutParams.FILL_PARENT , > getWindow() > .getWindowManager().getDefaultDisplay().getHeight() ) ); > parent.addView( spacer ); > > _button = new Button( this ); > _button.setText( "button" ); > parent.addView( _button ); > > return ret; > } > > �...@override > public void onCreate( Bundle savedInstanceState ) { > super.onCreate( savedInstanceState ); > setContentView( buildView() ); > > _viewSwitcher.setFactory( new ViewSwitcher.ViewFactory() { > �...@override > public View makeView() { > TextView view = new > TextView( AnimationValidationActivity.this ); > view.setLayoutParams( new > ViewSwitcher.LayoutParams( ViewSwitcher.LayoutParams.FILL_PARENT , > ViewSwitcher.LayoutParams.FILL_PARENT ) ); > view.setBackgroundColor( 0xffffffff ); > > view.setText( "foobar" ); > > return view; > } > } ); > > _button.setOnClickListener( new View.OnClickListener() { > �...@override > public void onClick( View v ) { > > _viewSwitcher.setInAnimation( buildTranslateAnimation( > _viewSwitcher.getWidth() , > 0 , 0 , 0 ) ); > > _viewSwitcher.setOutAnimation( buildTranslateAnimation( 0 , - > _viewSwitcher.getWidth() , 0 , 0 ) ); > > int color = new Random().nextInt(); > > _viewSwitcher.getNextView().setBackgroundColor( 0xff000000 | color & > 0xffffff ); > _viewSwitcher.showNext(); > } > } ); > } > } > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Romain Guy Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
