/**
* Closes the activity and saves it as completed. A subsequent call to WelcomeScreenHelper.show()
* would not show this again, unless the key is changed.
*/
protected void completeWelcomeScreen() {
SharedPreferencesHelper.storeWelcomeCompleted(this, getKey());
setWelcomeScreenResult(RESULT_OK);
super.finish();
if (mConfiguration.getExitAnimation() != WelcomeScreenConfiguration.NO_ANIMATION_SET)
overridePendingTransition(R.anim.none, mConfiguration.getExitAnimation());
}
@Override
public void onBackPressed() {
boolean scrolledBack = false;
if (mConfiguration.getBackButtonNavigatesPages()) {
scrolledBack = scrollToPreviousPage();
}
if (!scrolledBack) {
if (mConfiguration.getCanSkip() && mConfiguration.getBackButtonSkips()) {
completeWelcomeScreen();
} else {
cancelWelcomeScreen();
}
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mConfiguration.getShowActionBarBackButton() && item.getItemId() == android.R.id.home) {
cancelWelcomeScreen();
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
mConfiguration = configuration();
// overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
super.setTheme(mConfiguration.getThemeResId());
/* Passing null for savedInstanceState fixes issue with fragments in list not matching
the displayed ones after the screen was rotated. (Parallax animations would stop working)
TODO: Look into this more
*/
super.onCreate(null);
setContentView(R.layout.activity_welcome);
AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
mAdapter = new WelcomeFragmentPagerAdapter(getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.view_pager);
mViewPager.setAdapter(mAdapter);
if (mConfiguration.getShowActionBarBackButton()) {
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) actionBar.setDisplayHomeAsUpEnabled(true);
}
SkipButton skip = new SkipButton(findViewById(R.id.button_skip), mConfiguration.getCanSkip());
skip.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
completeWelcomeScreen();
}
});
PreviousButton prev = new PreviousButton(findViewById(R.id.button_prev));
prev.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View view) {
scrollToPreviousPage();
}
});
NextButton next = new NextButton(findViewById(R.id.button_next));
next.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
scrollToNextPage();
}
});
DoneButton done = new DoneButton(findViewById(R.id.button_done));
done.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
completeWelcomeScreen();
}
});
WelcomeScreenViewPagerIndicator indicator =
(WelcomeScreenViewPagerIndicator) findViewById(R.id.pager_indicator);
WelcomeScreenBackgroundView background =
(WelcomeScreenBackgroundView) findViewById(R.id.background_view);
WelcomeScreenHider hider = new WelcomeScreenHider(findViewById(R.id.root));
hider.setOnViewHiddenListener(
new WelcomeScreenHider.OnViewHiddenListener() {
@Override
public void onViewHidden() {
completeWelcomeScreen();
}
});
mItems =
new WelcomeScreenItemList(
background, indicator, skip, prev, next, done, hider, mConfiguration.getPages());
mViewPager.addOnPageChangeListener(mItems);
mViewPager.setCurrentItem(mConfiguration.firstPageIndex());
mItems.setup(mConfiguration);
mItems.onPageSelected(mViewPager.getCurrentItem());
}
private boolean canScrollToPreviousPage() {
return mConfiguration.isRtl()
? getPreviousPageIndex() <= mConfiguration.firstPageIndex()
: getPreviousPageIndex() >= mConfiguration.firstPageIndex();
}
private boolean canScrollToNextPage() {
return mConfiguration.isRtl()
? getNextPageIndex() >= mConfiguration.lastViewablePageIndex()
: getNextPageIndex() <= mConfiguration.lastViewablePageIndex();
}
private int getPreviousPageIndex() {
return mViewPager.getCurrentItem() + (mConfiguration.isRtl() ? 1 : -1);
}
private int getNextPageIndex() {
return mViewPager.getCurrentItem() + (mConfiguration.isRtl() ? -1 : 1);
}