Example usage for android.widget TabWidget requestRectangleOnScreen

Introduction

In this page you can find the example usage for android.widget TabWidget requestRectangleOnScreen.

Prototype

public boolean requestRectangleOnScreen(Rect rectangle, boolean immediate) 

Source Link

Document

Request that a rectangle of this view be visible on the screen, scrolling if necessary just enough.

Usage

From source file:com.jtechme.apphub.privileged.views.TabsAdapter.java

@Override
public void onPageSelected(int position) {
    // Unfortunately when TabHost changes the current tab, it kindly
    // also takes care of putting focus on it when not in touch mode.
    // The jerk.//from  www  .  j a v  a  2  s .  c  o  m
    // This hack tries to prevent this from pulling focus out of our
    // ViewPager.
    TabWidget widget = mTabHost.getTabWidget();
    int oldFocusability = widget.getDescendantFocusability();
    widget.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
    mTabHost.setCurrentTab(position);
    widget.setDescendantFocusability(oldFocusability);

    // Scroll the current tab into visibility if needed.
    View tab = widget.getChildTabViewAt(position);
    mTempRect.set(tab.getLeft(), tab.getTop(), tab.getRight(), tab.getBottom());
    widget.requestRectangleOnScreen(mTempRect, false);

    // Make sure the scrollbars are visible for a moment after selection
    final View contentView = mTabs.get(position);
    if (contentView instanceof CaffeinatedScrollView) {
        ((CaffeinatedScrollView) contentView).awakenScrollBars();
    }
}

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From source file:com.android.packageinstaller.TabsAdapter.java

@Override
public void onPageSelected(int position) {
    // Unfortunately when TabHost changes the current tab, it kindly
    // also takes care of putting focus on it when not in touch mode.
    // The jerk.//from w ww.j  a va  2  s. co  m
    // This hack tries to prevent this from pulling focus out of our
    // ViewPager.
    TabWidget widget = mTabHost.getTabWidget();
    int oldFocusability = widget.getDescendantFocusability();
    widget.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
    mTabHost.setCurrentTab(position);
    widget.setDescendantFocusability(oldFocusability);

    // Scroll the current tab into visibility if needed.
    View tab = widget.getChildTabViewAt(position);
    mTempRect.set(tab.getLeft(), tab.getTop(), tab.getRight(), tab.getBottom());
    widget.requestRectangleOnScreen(mTempRect, false);

    // Make sure the scrollbars are visible for a moment after selection
    final View contentView = mTabs.get(position).view;
    if (contentView instanceof CaffeinatedScrollView) {
        ((CaffeinatedScrollView) contentView).awakenScrollBars();
    }
}

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