Question

我使用普通tabLayout和viewpager。我正在使用tabLayout的自定义标签。但是一些奇怪的行为发生在标签中。

正如您所看到的，前两个标签之间有空格，但第二个和第三个标签之间没有空格。

注意：在第三个标签中，我已将箭头imageview的可见性设置为已消失。 这不是问题。

我的tablayout屏幕布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:tabGravity="center"
        app:tabIndicatorHeight="3dp"
        app:tabPaddingStart="0dp"
        app:tabPaddingEnd="0dp"
        android:layout_marginTop="@dimen/margin_15"
        app:tabIndicatorColor="@color/colorTransperent"
        app:tabMode="fixed"
        app:tabTextAppearance="?android:attr/textAppearanceMedium" />

    <com.smartcompliant.views.CustomPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

自定义标签：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="horizontal">


    <TextView
        android:id="@+id/tvTabTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        tools:text="@tools:sample/lorem"
        android:textSize="@dimen/font_14"/>

    <ImageView
        android:id="@+id/ivArrow"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:src="@drawable/ic_right"/>

</LinearLayout>

在java文件中填充标签，例如：

View v =  LayoutInflater.from(getContext()).inflate(R.layout.cust_tabs, null);
tabForm = (TextView) v.findViewById(R.id.tvTabTitle);
tabForm.setText(getResources().getString(R.string.form));
tabForm.setTextColor(getContext().getResources().getColor(R.color.colorGreen));
tabLayout.getTabAt(0).setCustomView(v);

所以基本上有两个问题：

标签之间的空格相等。
在某些小型设备屏幕中，重心不起作用。

如果需要任何代码，请告诉我。谢谢:)）

Answer 1

已编辑要使固定的tabMode正常工作，您需要使imageview不可见而不会消失。

GONE不会在您的UI层次结构中占用任何空间，其中INVISIBLE仍将存在于UI层次结构中但不可见。在原始实现中，您可以根据您的逻辑

替换GONE => INVISIBLE

MainActivity.java

package in.silentsudo.shoppingcardnavigation;

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.FragmentStatePagerAdapter;
import android.support.v4.content.ContextCompat;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

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

public class MainActivity extends AppCompatActivity implements TabLayout.OnTabSelectedListener {

    private ViewPager viewPager;
    private TabLayout tabLayout;
    private String[] titles = new String[]{
            "File details", "Select Photo", "Submit"
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tabLayout = findViewById(R.id.tab_layout);
        viewPager = findViewById(R.id.view_pager);

        final FormDetailsViewAdapter adapter = new FormDetailsViewAdapter(getSupportFragmentManager());
        adapter.addPage(new PlaceHolderFragment());
        adapter.addPage(new PlaceHolderFragment());
        adapter.addPage(new PlaceHolderFragment());

        viewPager.setAdapter(adapter);

        tabLayout.addTab(tabLayout.newTab());
        tabLayout.addTab(tabLayout.newTab());
        tabLayout.addTab(tabLayout.newTab());

        tabLayout.setupWithViewPager(viewPager);

        final LayoutInflater inflater = LayoutInflater.from(this);
        for (int i = 0; i < 3; i++) {
            View v = inflater.inflate(R.layout.item_tab, tabLayout, false);
            TextView txtView = (TextView) v.findViewById(R.id.txt);
            ImageView img = (ImageView) v.findViewById(R.id.img);
            txtView.setText(titles[i]);
            txtView.setTextColor(ContextCompat.getColor(this, R.color.tab_color_unselected));
            img.setImageResource(R.drawable.ic_right_unselected);
            if(i == 2) {
                img.setVisibility(View.INVISIBLE);
            }
            tabLayout.getTabAt(i).setCustomView(v);
        }

        tabLayout.getTabAt(0).select();

        viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
        tabLayout.addOnTabSelectedListener(this);
        tabLayout.post(new Runnable() {
            @Override
            public void run() {
                onTabSelected(tabLayout.getTabAt(0));
            }
        });
    }

    @Override
    public void onTabSelected(TabLayout.Tab tab) {
        System.out.println("Tab selected : " + tab.getPosition());
        View customView = tab.getCustomView();
        TextView txtView = (TextView) customView.findViewById(R.id.txt);
        ImageView img = (ImageView) customView.findViewById(R.id.img);
        txtView.setTextColor(ContextCompat.getColor(this, R.color.tab_color_selected));
        img.setImageResource(R.drawable.ic_right_selected);
    }

    @Override
    public void onTabUnselected(TabLayout.Tab tab) {
        System.out.println("Tab unselected : " + tab.getPosition());
        View customView = tab.getCustomView();
        TextView txtView = (TextView) customView.findViewById(R.id.txt);
        ImageView img = (ImageView) customView.findViewById(R.id.img);
        txtView.setTextColor(ContextCompat.getColor(this, R.color.tab_color_unselected));
        img.setImageResource(R.drawable.ic_right_unselected);

    }

    @Override
    public void onTabReselected(TabLayout.Tab tab) {
        System.out.println("Tab reselected : " + tab.getPosition());
    }
}

class FormDetailsViewAdapter extends FragmentStatePagerAdapter {

    private List<Fragment> list;

    public FormDetailsViewAdapter(FragmentManager fm) {
        super(fm);
        list = new ArrayList<>();
    }

    public void addPage(Fragment fragment) {
        list.add(fragment);
    }

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

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

    @Override
    public CharSequence getPageTitle(int position) {
        return "Fragment " + position;
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<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"
    tools:context="in.silentsudo.shoppingcardnavigation.MainActivity">

    <android.support.design.widget.TabLayout
        android:id="@+id/tab_layout"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:layout_alignParentBottom="true"
        android:background="#ffffff"
        app:tabGravity="fill"
        app:tabIndicatorColor="@android:color/transparent"
        app:tabMode="fixed" />
    <android.support.v4.view.ViewPager
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/colorAccent" />
</LinearLayout>

item_tab.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:gravity="center"
    android:padding="4dp"
    android:orientation="horizontal">

    <TextView
        android:id="@+id/txt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="10sp"
        android:text="This is text" />

    <ImageView
        android:id="@+id/img"
        android:layout_width="18dp"
        android:layout_height="18dp"
        android:layout_marginStart="8dp"
        android:src="@drawable/ic_right_selected" />

</LinearLayout>

PlaceHolderFragment.java

public class PlaceHolderFragment extends Fragment {

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.layout_fragment_place_holder, container, false);
    }
}

fragment_place_holder.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:text="This is place holder fragment" />
</RelativeLayout>

ic_right_selected.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="18dp" android:viewportHeight="24.0" android:viewportWidth="24.0" android:width="18dp">
    <path android:fillColor="#1DE9B6" android:pathData="M8.59,16.34l4.58,-4.59 -4.58,-4.59L10,5.75l6,6 -6,6z"/>
</vector>

ic_right_unselected.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="18dp"
    android:height="18dp"
    android:viewportHeight="24.0"
    android:viewportWidth="24.0">
    <path
        android:fillColor="#BDBDBD"
        android:pathData="M8.59,16.34l4.58,-4.59 -4.58,-4.59L10,5.75l6,6 -6,6z" />
</vector>

colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>
    <color name="tab_color_selected">#1DE9B6</color>
    <color name="tab_color_unselected">#BDBDBD</color>
</resources>

Answer 2

试试这个

<android.support.design.widget.TabLayout
    android:id="@+id/tabs"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:tabGravity="center"
    app:tabIndicatorHeight="3dp"
    app:tabPaddingStart="0dp"
    app:tabPaddingEnd="0dp"
    android:layout_marginTop="15dp"
    app:tabIndicatorColor="@android:color/transparent"
    app:tabMode="scrollable"
    app:tabTextAppearance="?android:attr/textAppearanceMedium" />

自定义标签布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:orientation="horizontal">


    <TextView
        android:id="@+id/tvTabTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="14sp"
        tools:text="@tools:sample/lorem" />

    <ImageView
        android:id="@+id/ivArrow"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_right" />

</LinearLayout>

设置标签图标

  public void setTab(){
        View v =  LayoutInflater.from(this).inflate(R.layout.custom_tab, null);
        TextView tabForm = (TextView) v.findViewById(R.id.tvTabTitle);
        tabForm.setText("Fill details");
        tabLayout.getTabAt(0).setCustomView(v);


        View v2 =  LayoutInflater.from(this).inflate(R.layout.custom_tab, null);
        TextView tabForm2 = (TextView) v2.findViewById(R.id.tvTabTitle);
        tabForm2.setText("Select photo");
        tabLayout.getTabAt(1).setCustomView(v2);

        View v3 =  LayoutInflater.from(this).inflate(R.layout.custom_tab, null);
        TextView tabForm3 = (TextView) v3.findViewById(R.id.tvTabTitle);
        tabForm3.setText("submit");
        ImageView imageView=v3.findViewById(R.id.ivArrow);
        imageView.setVisibility(View.INVISIBLE);
        tabLayout.getTabAt(2).setCustomView(v3);
    }

标签的奇怪行为

2 个答案: