@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
if (positionOffset > 0) {
GradientIconView iconLeft = mIconIndicator.get(position);
GradientIconView iconRight = mIconIndicator.get(position + 1);
GradientTextView textLeft = mTextIndicator.get(position);
GradientTextView textRight = mTextIndicator.get(position + 1);
iconLeft.setIconAlpha(1 - positionOffset);
iconRight.setIconAlpha(positionOffset);
textLeft.setTextViewAlpha(1 - positionOffset);
textRight.setTextViewAlpha(positionOffset);
}
}
private void initViews() {
mViewPager = (ViewPager) findViewById(R.id.viewPager);
mIconChats = (GradientIconView) findViewById(R.id.chat_icon);
mIconIndicator.add(mIconChats);
mIconChats.setIconAlpha(1f);
mIconContacts = (GradientIconView) findViewById(R.id.contacts_icon);
mIconIndicator.add(mIconContacts);
mIconDiscover = (GradientIconView) findViewById(R.id.discover_icon);
mIconIndicator.add(mIconDiscover);
mIconAbout = (GradientIconView) findViewById(R.id.about_icon);
mIconIndicator.add(mIconAbout);
mTextChats = (GradientTextView) findViewById(R.id.chat_text);
mTextIndicator.add(mTextChats);
mTextChats.setTextViewAlpha(1f);
mTextContacts = (GradientTextView) findViewById(R.id.contacts_text);
mTextIndicator.add(mTextContacts);
mTextDiscover = (GradientTextView) findViewById(R.id.discover_text);
mTextIndicator.add(mTextDiscover);
mTextAbout = (GradientTextView) findViewById(R.id.about_text);
mTextIndicator.add(mTextAbout);
mContainerChats = (LinearLayout) findViewById(R.id.chat_container);
mContainerChats.setOnClickListener(this);
mContainerContacts = (LinearLayout) findViewById(R.id.contacts_container);
mContainerContacts.setOnClickListener(this);
mContainerDiscover = (LinearLayout) findViewById(R.id.discover_container);
mContainerDiscover.setOnClickListener(this);
mContainerAbout = (LinearLayout) findViewById(R.id.about_container);
mContainerAbout.setOnClickListener(this);
initFragments();
}