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Commit dae7a01a authored by Alok Tongaonkar's avatar Alok Tongaonkar Committed by Steve Kondik
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TabHost: Prevent first tab from being set up as current tab initially. 

This change provides a way for applications to prevent the first tab
from being set up as current tab initially by setting the variable
mAvoidFirstTabLoad to true.

Change-Id: I77a71ec42712846c8e18c90da69fc853f3758279
parent e3045555

core/java/android/widget/TabHost.java

+24 −2
Original line number Diff line number Diff line
@@ -51,6 +51,14 @@ public class TabHost extends FrameLayout implements ViewTreeObserver.OnTouchMode 
     * {@hide}

     */

    protected int mCurrentTab = -1;

    /**

     * This field when set to true ensures that first tab is not set as the current tab

     * by preventing the addTab() from calling setCurrentTab() with index set to 0.

     * To ensure that the operations of an application are not changed, it should be set to

     * false whenever mCurrenttab is set to -1.

     * {@hide}

     */

    private boolean mAvoidFirstTabLoad = false;

    private View mCurrentView = null;

    /**

     * This field should be made private, so it is hidden from the SDK.
@@ -75,6 +83,7 @@ public class TabHost extends FrameLayout implements ViewTreeObserver.OnTouchMode 
        setDescendantFocusability(FOCUS_AFTER_DESCENDANTS);



        mCurrentTab = -1;

        mAvoidFirstTabLoad = false;

        mCurrentView = null;

    }
@@ -209,7 +218,9 @@ mTabHost.addTab(TAB_TAG_1, "Hello, world!", "Tab 1"); 
        mTabWidget.addView(tabIndicator);

        mTabSpecs.add(tabSpec);



        if (mCurrentTab == -1) {

	// The second test is always true except when an application explicitly sets

	// mAvoidFirstTabLoad to true.

        if (mCurrentTab == -1 && !mAvoidFirstTabLoad) {

            setCurrentTab(0);

        }

    }
@@ -252,7 +263,18 @@ mTabHost.addTab(TAB_TAG_1, "Hello, world!", "Tab 1"); 
    public View getCurrentView() {

        return mCurrentView;

    }



    /**

     * {@hide}

     */

    public void setAvoidFirstTabLoad(boolean flag) {

	mAvoidFirstTabLoad = flag;

    }

    /**

     * {@hide}

     */

    public void setCurrentTabToZero() {

	mCurrentTab = 0;

    }

    public void setCurrentTabByTag(String tag) {

        int i;

        for (i = 0; i < mTabSpecs.size(); i++) {