使用带有选项卡布局的自定义视图时，无法从选项卡中删除填充

Question

我在自定义视图中添加了相对布局，并在选项卡布局中添加了它。我使用白色背景的标签，并没有在标签自定义布局中应用任何填充。但是后来我也在填充选项卡上，因为我在选项卡中显示了一些灰色背景，好像android在内部应用填充到选项卡。我试图显示三个文本视图，我可以做，但其中一个是截断，因为填充应用于选项卡。此外，我希望标签具有一致的背景颜色。

这是我的布局代码：

activity_home.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.customtablayoutapplication.HomeActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />


    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_home" />


</android.support.design.widget.CoordinatorLayout>



fragment_home.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:theme="@style/AppTheme.AppBarOverlay"
    tools:context="com.customtablayoutapplication.HomeFragment"
    tools:showIn="@layout/activity_home">

    <android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:tabGravity="fill"
        app:tabMode="fixed" />

    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

</LinearLayout>


custom_tab.xml`enter code here`

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:background="@android:color/white"
    android:layout_height="match_parent"
    android:layout_gravity="center">

    <TextView
        android:id="@+id/total_request_count"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:text="12"
        android:textAllCaps="false"
        android:visibility="gone"
        android:textColor="@color/colorPrimaryDark"
        android:textSize="12sp" />


    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerVertical="true"
        android:fitsSystemWindows="true"
        android:gravity="center">

        <TextView
            android:id="@+id/request_status"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center"
            android:text="New Request"
            android:textAllCaps="false"
            android:textColor="@color/colorPrimaryDark"
            android:textSize="12sp" />

        <TextView
            android:id="@+id/badge_icon"
            android:layout_width="13dp"
            android:layout_height="13dp"
            android:layout_alignParentRight="true"
            android:layout_alignTop="@id/request_status"
            android:layout_marginLeft="-3dp"
            android:layout_marginTop="15dp"
            android:background="@drawable/circular_text_background"
            android:clickable="false"
            android:visibility="gone" />
    </RelativeLayout>


</RelativeLayout>


HomeFragment.java

package com.customtablayoutapplication;

import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RelativeLayout;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

/**
 * A placeholder fragment containing a simple view.
 */
public class HomeFragment extends Fragment {

    private ViewPager viewPager;
    private TabLayout tabLayout;

    public HomeFragment() {
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.fragment_home, container, false);
        viewPager = (ViewPager) view.findViewById(R.id.viewpager);
        setupViewPager(viewPager);

        tabLayout = (TabLayout) view.findViewById(R.id.tabs);
        tabLayout.setupWithViewPager(viewPager);
        setUpTabIcons();
        return view;
    }

    private void setUpTabIcons() {
        RelativeLayout tabNewRequest= (RelativeLayout) LayoutInflater.from(getActivity()).inflate(R.layout.custom_tab, null);
        TextView tabNewRequesttxt = (TextView) tabNewRequest.findViewById(R.id.request_status);
        tabNewRequesttxt.setText("New Request");
        tabLayout.getTabAt(0).setCustomView(tabNewRequest);

        RelativeLayout tabInProgress= (RelativeLayout) LayoutInflater.from(getActivity()).inflate(R.layout.custom_tab, null);
        TextView tabInProgresstxt = (TextView) tabInProgress.findViewById(R.id.request_status);
        tabInProgresstxt.setText("In Progress");
        tabLayout.getTabAt(1).setCustomView(tabInProgress);

        RelativeLayout tabWorkDone= (RelativeLayout) LayoutInflater.from(getActivity()).inflate(R.layout.custom_tab, null);
        TextView tabWorkDonetxt = (TextView) tabWorkDone.findViewById(R.id.request_status);
        tabWorkDonetxt.setText("Work Done");
        tabLayout.getTabAt(2).setCustomView(tabWorkDone);

        RelativeLayout tabDelivered= (RelativeLayout) LayoutInflater.from(getActivity()).inflate(R.layout.custom_tab, null);
        TextView tabDeliveredtxt = (TextView) tabDelivered.findViewById(R.id.request_status);
        tabDeliveredtxt.setText("Delivered");
        tabLayout.getTabAt(3).setCustomView(tabDelivered);
    }

    private void setupViewPager(ViewPager viewPager) {
        ViewPagerAdapter adapter = new ViewPagerAdapter(getChildFragmentManager());
        adapter.addFragment(new NewRequestFragment(), "New Request");
        adapter.addFragment(new InProgressFragment(), "In Progress");
        adapter.addFragment(new WorkDoneFragment(), "Work Done");
        adapter.addFragment(new DeliveredFragment(), "Delivered");
        viewPager.setAdapter(adapter);
    }

    class ViewPagerAdapter extends FragmentPagerAdapter {
        private final List<Fragment> mFragmentList = new ArrayList<>();
        private final List<String> mFragmentTitleList = new ArrayList<>();

        public ViewPagerAdapter(FragmentManager manager) {
            super(manager);
        }

        @Override
        public Fragment getItem(int position) {
            return mFragmentList.get(position);
        }

        @Override
        public int getCount() {
            return mFragmentList.size();
        }

        public void addFragment(Fragment fragment, String title) {
            mFragmentList.add(fragment);
            mFragmentTitleList.add(title);
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return mFragmentTitleList.get(position);
        }
    }
}

Fixed Tab are having grey background arround white background

Answer 1

 <android.support.design.widget.TabLayout
            android:id="@+id/tab_layout"
            android:layout_width="210dp"
            android:layout_height="28dp"
            android:layout_centerInParent="true"
            android:background="@drawable/bg_forum_tab"
            app:tabIndicatorColor="@color/colorBtnBg"
            app:tabIndicatorHeight="0dp"
            app:tabPaddingBottom="-1dp"
            app:tabPaddingEnd="-1dp"
            app:tabPaddingStart="-1dp"
            app:tabPaddingTop="-1dp"
            app:tabSelectedTextColor="@color/colorBtnBg"
            app:tabTextColor="@color/colorWhite" />

像这样设置tabPaddingStart / tabPaddingEnd / tabPaddingTop / tabPaddingBottom。

Answer 2

它对我有用：

在您的TabLayout中，您必须将tabPaddingEnd和tabPaddingStart设置为0dp。

在自定义视图中，您必须将layout_width和layout_height设置为match_parent才能使用自定义颜色填充所有空间。

TabLayout：

<android.support.design.widget.TabLayout
    android:id="@+id/tl_dashboard"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:layout_alignParentBottom="true"
    app:tabGravity="fill"
    app:tabIndicatorColor="@color/colorRed"
    app:tabMode="fixed"
    app:tabPaddingStart="0dp"
    app:tabPaddingEnd="0dp"/>

自定义视图：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
     <!--Your widgets-->        
</RelativeLayout>

Answer 3

通过XML，您只能删除左右填充：

 app:tabPaddingEnd="0dp"
 app:tabPaddingStart="0dp"

请注意，这种方式对TOP和BOTTOM填充不起作用，但我找到了下一个解决方案：

将自定义视图用作标签项时，需要将 LayoutParams 设置为视图并设置填充 0 。

    for (int i = 0; i < tabLayout.getTabCount(); i++) {           
        View tabView = LayoutInflater.from(context)
              .inflate(LayoutInflater.from(this), R.layout.item_main_tabview, null, false);

        tabView.setLayoutParams(new TableLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
        tabView.setPadding(0, 0, 0, 0);
        tabLayout.getTabAt(i).setCustomView(tabViewBinding.getRoot());
    }

Answer 4

我通过设置保证金来解决这个问题。在向标签布局添加新标签时，将自定义视图的父级填充为零。

    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    lp.setMargins(0,0,0,0);

    TabLayout.Tab newTab = mTabsBottom.newTab().setCustomView(R.layout.view_custom_tab);
    setupTabParentLayout(newTab.getCustomView(), lp);
    ..
    ..
    ..
    private void setupTabParentLayout(View customView, LinearLayout.LayoutParams lp)
    {
        LinearLayout tabParent = (LinearLayout) customView.getParent();
        tabParent.setLayoutParams(lp);
        tabParent.setPadding(0,0,0,0);
    }

这里的诀窍是将LinearLayout.LayoutParams用于自定义视图的父级。

Answer 5

我知道这是一个老问题，但这可以帮助其他人。填充开始和填充结束并没有消除制表符之间的空间。解决方法是：

  

android：clipToPadding =“ true”

        <itemtype code="AppointmentProcess" extends="StoreFrontCustomerProcess"
                  autocreate="true" generate="true"
                  jaloclass="mypackage.jalo.AppointmentProcess">
            <attributes>
                <attribute qualifier="email" type="java.lang.String">
                    <persistence type="property" />
                </attribute>
            </attributes>
        </itemtype>

然后可以将填充设置为“ 0dp”。希望它可以帮助某人。

Answer 6

        <android.support.design.widget.TabLayout
            android:id="@+id/tabview"
            app:layout_constraintTop_toBottomOf="@+id/ivpromo"
            android:layout_width="0dp"
            app:tabMode="scrollable"
            app:tabIndicatorHeight="0dp"
            app:tabContentStart="0dp"
            android:clipToPadding="true"
            app:tabMaxWidth="45dp"
            app:tabGravity="fill"
            app:tabPaddingStart="0dp"
            app:tabPaddingEnd="0dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:tabIndicatorColor="@android:color/transparent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintLeft_toRightOf="@+id/tvcode"
            android:layout_height="40dp"/>

Answer 7

如果您尝试了很多事情，但没有一个工作，那么我最终要做的就是：设置

  

android：layout_height =“ 20dp

<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <androidx.viewpager.widget.ViewPager
        android:layout_width="match_parent"
        android:layout_gravity="bottom"
        android:layout_height="130dp"/>

    <com.google.android.material.tabs.TabLayout
        android:layout_height="20dp"
        android:layout_width="match_parent"
        android:layout_gravity="bottom"
        app:tabBackground="@drawable/tab_selector"
        app:tabGravity="center"
        app:tabIndicatorHeight="0dp"/>

</FrameLayout>

Answer 8

我是通过代码创建TabLayout的，我仅对此提供帮助

for (int position = 0; position < mTabLayout.getTabCount(); position++) {
    TabLayout.Tab tab = mTabLayout.getTabAt(position);
    if (tab != null) {
        ViewCompat.setPaddingRelative(tab.view, 0, 0, 0, 0); 
    }
}