CODEWITHSUNDEEP
androidandroid-layoutandroid-tablayout
Narayan C.R
Narayan C.R

Reputation: 874

Android Tab layout: Wrap tab indicator width with respect to tab title

Is there any way to wrap tab indicator width with respect to tab title ?

Current

Required

Upvotes: 46

Views: 70409

Answers (15)

thebadassdev
thebadassdev

Reputation: 166

You just need to add app:tabMode="scrollable". It automatically resizes

Upvotes: 0

leon
leon

Reputation: 952

Yes, it's possible to wrap tab indicator as title setting padding to 0

 public void wrapTabIndicatorToTitle(TabLayout tabLayout, int externalMargin, int internalMargin) {
        View tabStrip = tabLayout.getChildAt(0);
        if (tabStrip instanceof ViewGroup) {
            ViewGroup tabStripGroup = (ViewGroup) tabStrip;
            int childCount = ((ViewGroup) tabStrip).getChildCount();
            for (int i = 0; i < childCount; i++) {
                View tabView = tabStripGroup.getChildAt(i);
                //set minimum width to 0 for instead for small texts, indicator is not wrapped as expected
                tabView.setMinimumWidth(0);
                // set padding to 0 for wrapping indicator as title
                tabView.setPadding(0, tabView.getPaddingTop(), 0, tabView.getPaddingBottom());
                // setting custom margin between tabs
                if (tabView.getLayoutParams() instanceof ViewGroup.MarginLayoutParams) {
                    ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) tabView.getLayoutParams();
                    if (i == 0) {
                        // left
                        settingMargin(layoutParams, externalMargin, internalMargin);
                    } else if (i == childCount - 1) {
                        // right
                        settingMargin(layoutParams, internalMargin, externalMargin);
                    } else {
                        // internal
                        settingMargin(layoutParams, internalMargin, internalMargin);
                    }
                }
            }

            tabLayout.requestLayout();
        }
}

private void settingMargin(ViewGroup.MarginLayoutParams layoutParams, int start, int end) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
        layoutParams.setMarginStart(start);
        layoutParams.setMarginEnd(end);
        layoutParams.leftMargin = start;
        layoutParams.rightMargin = end;
    } else {
        layoutParams.leftMargin = start;
        layoutParams.rightMargin = end;
    }
}

Result

EDIT: As of com.android.support:design:28.0.0, you can adjust the indicator as label easily now setting:

app:tabIndicatorFullWidth="false"

EDIT July 2019: Use the material dependency com.google.android.material:material:x.x.x

Upvotes: 54

Aminul Haque Aome
Aminul Haque Aome

Reputation: 2599

For me app:tabIndicatorFullWidth="false" works perfectly. Here is my full code

<com.google.android.material.tabs.TabLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:tabIndicator="@drawable/my_tab_indicator"
                app:tabIndicatorColor="@color/tab_selected_unselected"
                app:tabIndicatorGravity="bottom"
                app:tabIndicatorHeight="@dimen/_3sdp"
                app:tabRippleColor="@color/transparent"
                app:tabMode="fixed"
                app:tabGravity="fill"
                app:tabIndicatorFullWidth="false"
                app:tabSelectedTextColor="@color/bottom_navigation_menu_selected"
                app:tabTextAppearance="@style/TabItemTextAppearance"
                app:tabTextColor="@color/title_1">

                <com.google.android.material.tabs.TabItem
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="অবজেক্টিভ" />

                <com.google.android.material.tabs.TabItem
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="সাবজেক্টিভ" />


</com.google.android.material.tabs.TabLayout>

Upvotes: 0

Pir Fahim Shah
Pir Fahim Shah

Reputation: 10623

We can easily set the width of the Tab indicator with respect to its Tab Title. Because of the com.android.support:design:28.0.0, we can easily adjust it using below code in xml file:

app:tabIndicatorFullWidth="false"

Upvotes: 0

heqingbao
heqingbao

Reputation: 326

You can do this:

layout/layout_demo.xml

<com.google.android.material.tabs.TabLayout
    app:tabIndicatorFullWidth="false"
    app:tabIndicator="@drawable/tab_indicator"
    .../>

res/tab_indicator.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:gravity="center">
    <shape>
        <size
            android:width="51dp"
            android:height="3dp" />
    </shape>
</item>
</layer-list>

Upvotes: 6

Dayakar Akula
Dayakar Akula

Reputation: 133

A simple solution is to add this attribute to your tabLayout

app:tabIndicatorFullWidth="false"

Upvotes: 4

Malek Hijazi
Malek Hijazi

Reputation: 4162

As of support library 28 you can do the following:

app:tabIndicatorFullWidth="false"
app:tabPaddingStart="25dp"
app:tabPaddingEnd="25dp"

You can set the desired padding that affects the tab indicator.

Also you can now do this:

app:tabIndicator="@drawable/tab_indicator"

this will set a custom drawable as indicator.

example of custom drawable:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <solid android:color="@color/colorPrimary"/>
    <corners android:radius="5dp"/>
</shape>

Upvotes: 34

sudhakara k s
sudhakara k s

Reputation: 215

One simple solution is:

tabLayout.setTabIndicatorFullWidth(false);

But it works with latest dependency like

implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.android.support:design:28.0.0'

Upvotes: 7

dplzop
dplzop

Reputation: 11

There's a attribute called tabIndicatorFullWidth inside android.support.design.widget.TabLayout

<android.support.design.widget.TabLayout
    android:id="@+id/tablayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:tabBackground="@color/colorPrimary"

    app:tabIndicatorFullWidth="false" // tested okay on 8.1 , 6.0.1 

    app:tabTextColor="@color/colorAccent"
    app:tabTextAppearance="@style/CampusTabText"
    android:minHeight="?attr/actionBarSize"
    app:tabMaxWidth="0dp"
    app:tabGravity="fill"
    app:tabMode="fixed" />

Upvotes: 0

ViramP
ViramP

Reputation: 1709

Wrap tab indicator width with respect to tab title and add right padding with tab title and right margin with tab indicator.

public class TabLayoutActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_tab_layout);

        TabLayout tabs = (TabLayout) findViewById(R.id.tabs);

        tabs.setTabTextColors(Color.parseColor("#727272"), Color.parseColor("#305b0d"));


        ViewPager pager = (ViewPager) findViewById(R.id.pager);
        TabsPagerAdapter adapter = new TabsPagerAdapter(getSupportFragmentManager());

        pager.setAdapter(adapter);
        tabs.setupWithViewPager(pager);

        wrapTabIndicatorToTitle(tabs,20,20);

    }
    public void wrapTabIndicatorToTitle(TabLayout tabLayout, int externalMargin, int internalMargin) {
        View tabStrip = tabLayout.getChildAt(0);
        if (tabStrip instanceof ViewGroup) {
            ViewGroup tabStripGroup = (ViewGroup) tabStrip;
            int childCount = ((ViewGroup) tabStrip).getChildCount();
            for (int i = 0; i < childCount; i++) {
                View tabView = tabStripGroup.getChildAt(i);


                //set minimum width to 0 for instead for small texts, indicator is not wrapped as expected
                tabView.setMinimumWidth(0);
                // set padding to 0 for wrapping indicator as title
                tabView.setPadding(0, tabView.getPaddingTop(), 40, tabView.getPaddingBottom());
                // setting custom margin between tabs
                if (tabView.getLayoutParams() instanceof ViewGroup.MarginLayoutParams) {
                    ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) tabView.getLayoutParams();
                    if (i == 0) {
                        // left
                        setMargin(layoutParams, externalMargin, internalMargin);
                    } else if (i == childCount - 1) {
                        // right
                        setMargin(layoutParams, internalMargin, externalMargin);
                    } else {
                        // internal
                        setMargin(layoutParams, internalMargin, internalMargin);
                    }
                }
            }

            tabLayout.requestLayout();
        }
    }

    private void setMargin(ViewGroup.MarginLayoutParams layoutParams, int start, int end) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            layoutParams.setMarginStart(start);
            layoutParams.setMarginEnd(end);
        } else {
            layoutParams.leftMargin = start;
            layoutParams.rightMargin = end;
        }
    }
}

Upvotes: -2

Silwester
Silwester

Reputation: 418

You can do it using styles.

In the layout xml:

<android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        style="@style/AppTabLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

in the styles.xml:

<style name="AppTabLayout" parent="Widget.Design.TabLayout">
    <item name="android:layout_marginLeft">40dp</item>
    <item name="android:layout_marginRight">40dp</item>
</style>

Upvotes: 1

Sira Lam
Sira Lam

Reputation: 5367

I tried 2 hours for various solutions but none of those have a perfect effect.
The problem lies on the tabView's padding - even if I set its padding to all 0,
Different tabs still have different padding and therefore the text inside its TextView varies in size.

Then I found this library which perfectly solved it.
https://github.com/H07000223/FlycoTabLayout
As @Stas Melnychenko said, we probably can't do it unless we re-write a TabLayout. And this library does re-write a TabLayout...

Upvotes: 0

Endy Silveira
Endy Silveira

Reputation: 211

I'm note sure about the SDK Version needed, but you can do it directly in your XML file, adding the padding attribute using app namespace.

Just make your TabLayout looks like this:

        <android.support.design.widget.TabLayout
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:id="@+id/tab"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            ...
            app:tabPaddingEnd="0dp"
            app:tabPaddingStart="0dp"
        </android.support.design.widget.TabLayout>

You can move the xmlns:app="http://schemas.android.com/apk/res-auto" for your parent layou too, but its your choice :)

Thanks leon for his answer, that lead me to achieve that by XML.

Upvotes: 0

Erik B
Erik B

Reputation: 2858

enter image description here

If you don't need the strip to be smaller than the text, then this should work:

public static void reduceMarginsInTabs(TabLayout tabLayout, int marginOffset) {

    View tabStrip = tabLayout.getChildAt(0);
    if (tabStrip instanceof ViewGroup) {
        ViewGroup tabStripGroup = (ViewGroup) tabStrip;
        for (int i = 0; i < ((ViewGroup) tabStrip).getChildCount(); i++) {
            View tabView = tabStripGroup.getChildAt(i);
            if (tabView.getLayoutParams() instanceof ViewGroup.MarginLayoutParams) {
                ((ViewGroup.MarginLayoutParams) tabView.getLayoutParams()).leftMargin = marginOffset;
                ((ViewGroup.MarginLayoutParams) tabView.getLayoutParams()).rightMargin = marginOffset;
            }
        }

        tabLayout.requestLayout();
    }
}

For added points you could check the text size of each title.

Upvotes: 12

Sviatoslav Melnychenko
Sviatoslav Melnychenko

Reputation: 543

Short answer is "no". Here is explanation.

There is private class SlidingTabStrip within TabLayout that draws indicator

    @Override
    public void draw(Canvas canvas) {
        super.draw(canvas);
        // Thick colored underline below the current selection
        if (mIndicatorLeft >= 0 && mIndicatorRight > mIndicatorLeft) {
            canvas.drawRect(mIndicatorLeft, getHeight() - mSelectedIndicatorHeight,
                    mIndicatorRight, getHeight(), mSelectedIndicatorPaint);
        }
    }

I believe mIndicatorLeft and mIndicatorRight is what you need. These fields are set in the same class:

    private void setIndicatorPosition(int left, int right) {
        if (left != mIndicatorLeft || right != mIndicatorRight) {
            // If the indicator's left/right has changed, invalidate
            mIndicatorLeft = left;
            mIndicatorRight = right;
            ViewCompat.postInvalidateOnAnimation(this);
        }
    }

where left and right parameters are calculated in next method:

private void updateIndicatorPosition() {
        final View selectedTitle = getChildAt(mSelectedPosition);
        int left, right;
        if (selectedTitle != null && selectedTitle.getWidth() > 0) {
            left = selectedTitle.getLeft();
            right = selectedTitle.getRight();
            if (mSelectionOffset > 0f && mSelectedPosition < getChildCount() - 1) {
                // Draw the selection partway between the tabs
                View nextTitle = getChildAt(mSelectedPosition + 1);
                left = (int) (mSelectionOffset * nextTitle.getLeft() +
                        (1.0f - mSelectionOffset) * left);
                right = (int) (mSelectionOffset * nextTitle.getRight() +
                        (1.0f - mSelectionOffset) * right);
            }
        } else {
            left = right = -1;
        }
        setIndicatorPosition(left, right);
    }

And the worst thing is that SlidingTabStrip field in TabLayout is private and final.

private final SlidingTabStrip mTabStrip;

I don't see how it's possible to achieve what you need without creating totally new TabLayout.

Upvotes: 4

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