Question

我正在开发一个Android项目，我在其中使用TabLayout来显示标签，如下图所示。正如您在屏幕截图中看到的那样，选项卡在左侧对齐。如何正确添加空格，以便三个选项卡填充整个宽度，而不是在左侧进入球杆。谢谢。

屏幕截图：

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"
    android:orientation="vertical">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="50dp">
        <android.support.design.widget.TabLayout
            android:id="@+id/tab_layout"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginTop="0dp"
            android:background="?attr/colorPrimary"
            android:minHeight="?attr/actionBarSize"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            android:fillViewport="false" />
    </RelativeLayout>


    <EditText
        android:id="@+id/emailEditText"
        android:layout_width="match_parent"
        android:layout_height="45dp"
        android:layout_marginTop="60dp"
        android:layout_marginLeft="7dp"
        android:layout_marginRight="7dp"
        android:layout_marginBottom="5dp"
        android:alpha="0.4"
        android:gravity="center"
        android:layout_gravity="center"
        android:background="@drawable/layout_bg"
        android:ellipsize="end"
        android:hint="Search...."
        android:textColor="@color/nliveo_black"
        android:textColorHint="@color/nliveo_black"
        android:inputType="textEmailAddress"
        android:maxLines="1"
        />
    <ImageView
        android:id="@+id/imageView"
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:alpha="0.8"
        android:src="@drawable/search"
        android:layout_above="@+id/productList"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginLeft="22dp"
        android:layout_marginStart="22dp"
        android:layout_marginBottom="15dp"
        />

    <ImageView
        android:id="@+id/cancel"
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:alpha="0.8"
        android:src="@drawable/xblack"
        android:layout_above="@+id/productList"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_marginRight="22dp"
        android:layout_marginBottom="15dp"

        />

    <ListView
        android:id="@+id/productList"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_below="@+id/emailEditText"
        android:layout_marginTop="5dp"

        android:layout_above="@+id/relativeLayout3" />

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:background="@color/common_signin_btn_dark_text_default"
        android:orientation="horizontal"
        android:id="@+id/relativeLayout3">

        <ImageView
            android:id="@+id/trashImage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_centerVertical="true"
            android:layout_marginLeft="46dp"
            android:layout_marginStart="46dp"
            android:src="@drawable/swappossible" />

        <ImageView
            android:id="@+id/swapImage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignTop="@+id/trashImage"
            android:layout_centerHorizontal="true"
            android:src="@drawable/footerheart" />

        <ImageView
            android:id="@+id/button3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentEnd="true"
            android:layout_alignParentRight="true"
            android:layout_alignTop="@+id/swapImage"
            android:layout_marginBottom="5dp"
            android:layout_marginEnd="41dp"
            android:layout_marginRight="41dp"
            android:src="@drawable/footermessages" />
    </RelativeLayout>

</RelativeLayout>

活动：

public class Products extends Activity{

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

        tabLayout.addTab(tabLayout.newTab().setText("Tinder"));
        tabLayout.addTab(tabLayout.newTab().setText("List"));
        tabLayout.addTab(tabLayout.newTab().setText("Maps"));
        tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
        tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
        tabLayout.getTabAt(1).select();
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {

                switchIntentsForTabs(tab.getText().toString().toLowerCase());
            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {
                switchIntentsForTabs(tab.getText().toString().toLowerCase());
            }
        });
}

PageAdapter.java：

public class PageAdapter extends FragmentStatePagerAdapter {

    int mNumOfTabs;

    public PageAdapter(FragmentManager fm, int NumOfTabs) {
        super(fm);
        this.mNumOfTabs = NumOfTabs;
    }

    @Override
    public Fragment getItem(int position) {

        switch (position) {
            case 0:
                return new FirstTab();
            case 1:
                return new SecondTab();
            case 2:
                return new ThirdTab();
            default:
                return null;
        }
    }

    @Override
    public int getCount() {
        return mNumOfTabs;
    }
}

FirstTab.java：

public class FirstTab extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.tab_fragment_1, container, false);
    }
}

tab_fragment_1.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"
        android:orientation="vertical">
    // Tried adding layout_marginLeft=150 in TextView below, nothing changed.
        <TextView
            android:id="@+id/textView"
            android:layout_width="100dp"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:singleLine="true"
            />

    </RelativeLayout>

谢谢。

Answer 1

请删除活动文件中的以下行

    tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
    tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

并更改您的tablayout

<android.support.design.widget.TabLayout
    android:id="@+id/tab_layout"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:layout_marginTop="0dp"
    android:background="?attr/colorPrimary"
    android:minHeight="?attr/actionBarSize"
    app:tabMode="fixed"
    app:tabGravity="fill"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    android:fillViewport="false" />

Android：在标签布局之间添加空格

1 个答案: