问题
I use ActivityGroup to manage activities, I want to add animation when change activity, the code I used to change to next activity is:
Intent intent = new Intent(getParent(), AnotherActivity.class);
TabGroupActivity parentActivity = (TabGroupActivity) getParent();
parentActivity.startChildActivity("AnotherActivity", intent);
And inside startChildActivity
:
Window window =getLocalActivityManager().startActivity(Id,intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP));
if (window != null) {
View view = window.getDecorView();
mIdList.add(Id);
setContentView(view);
}
TabGroupActivity
is just an ActivityGroup
, provides some useful methods. With the above code, what/where do I add to enable animation?
回答1:
I needed to implement wizard with page transitions sometime ago. And I used ActivityGroup approach. It had Wizard
(inherited from AcitivtyGroup
) and WizardPage
(inherited from Activity
). WizardPage
had code that handled animations, while Wizard
was responsible to call those animations in appropriate times.
WizardPage
class:
/**
* Called to animate appearance of this activity
* as if somebody clicked next on previous activity
* and ended up to this activity.
*
* Animation: <----
*/
void onAnimateOpenAsNext()
{
animateTransition(android.R.attr.activityOpenEnterAnimation);
}
/**
* Called to animate appearance of this activity
* as if somebody clicked back on previous activity
* and ended up to this activity.
*
* Animation: ---->
*/
void onAnimateOpenAsPrev()
{
animateTransition(android.R.attr.activityCloseEnterAnimation);
}
/**
* Called to animate disappearance of this acitivity
* when "next" button was clicked
*
* Animation: <--
*/
void onAnimateCloseOnNext()
{
animateTransition(android.R.attr.activityOpenExitAnimation);
}
/**
* Called to animate disappearance of this activity
* when "prev" button was clicked
*
* Animation: -->
*/
void onAnimateCloseOnPrev()
{
animateTransition(android.R.attr.activityCloseExitAnimation);
}
private void animateTransition(int animAttributeId)
{
TypedValue animations = new TypedValue();
Theme theme = this.getTheme();
theme.resolveAttribute(android.R.attr.windowAnimationStyle, animations, true);
TypedArray animationArray = obtainStyledAttributes(animations.resourceId,
new int[] {animAttributeId});
int animResId = animationArray.getResourceId(0, 0);
animationArray.recycle();
if(animResId != 0)
{
try
{
Animation anim = AnimationUtils.loadAnimation(this, animResId);
getWindow().getDecorView().startAnimation(anim);
}
catch(Resources.NotFoundException ex)
{
//didn't find animation resource, ignore error
}
}
}
Wizard
had startPage
method which was called to make the actual activity transitions:
public void startPage(int i)
{
int prevIndex = getCurrentPageIndex();
m_pageIndex = i;
WizardPage currentPage = getCurrentPage();
if(currentPage != null)
{
if(prevIndex <= i)
{
currentPage.onAnimateCloseOnNext();
}
else
{
currentPage.onAnimateCloseOnPrev();
}
}
LocalActivityManager manager = getLocalActivityManager();
m_startingActivity = true;
Window activityWindow = manager.startActivity(Integer.toString(i), m_pageIntens.get(i));
m_startingActivity = false;
setContentView(activityWindow.getDecorView());
currentPage = getCurrentPage();
if(currentPage != null)
{
if(prevIndex <= i)
{
getCurrentPage().onAnimateOpenAsNext();
}
else
{
getCurrentPage().onAnimateOpenAsPrev();
}
}
}
来源:https://stackoverflow.com/questions/6005547/android-activity-transition-animation-in-activitygroup