How to place tabs at bottom of app in a tabbedacti

问题:

I'm trying to use a tabbedActivity in android to create a simple app. I would like to put my tabs at the bottom of the screen.

Here is what i've got when creating my Activity with android studio.

What I would like, is the part with "SECTION 1 SECTION 2 SECTION 3" to be at the bottom of the screen.

Here is my xml file:

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingTop="@dimen/appbar_padding_top"
    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:layout_scrollFlags="scroll|enterAlways"
        app:popupTheme="@style/AppTheme.PopupOverlay">

    </android.support.v7.widget.Toolbar>

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

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

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

This code is wrapped in a CoordinatorLayout. The problem is that if I take the TabLayout and put it after the viewPager, it is erased from the screen.

Anyone's got an idea please?

EDIT : Thanks to @Vivek Mishra answer, it works ! Thanks

回答1:

You can set tabs at bottom using tabhost like this way,

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/tabHost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="50dp"
            android:layout_alignParentBottom="true"></TabWidget>

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_marginBottom="50dp">

            <LinearLayout
                android:id="@+id/tab1"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="#ffc916"
                android:orientation="vertical">

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:text="This is tab 1" />

            </LinearLayout>

            <LinearLayout
                android:id="@+id/tab2"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="#da8200"
                android:orientation="vertical">

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:text="This is tab 2" />
            </LinearLayout>

            <LinearLayout
                android:id="@+id/tab3"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="#5b89ff"
                android:orientation="vertical">

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:text="This is tab 3" />
            </LinearLayout>
        </FrameLayout>
    </RelativeLayout>
</TabHost>

MainActivity.java

public class MainActivity extends AppCompatActivity {

    TabHost tabHost;

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

        TabHost host = (TabHost) findViewById(R.id.tabHost);
        host.setup();

        //Tab 1
        TabHost.TabSpec spec = host.newTabSpec("Tab One");
        spec.setContent(R.id.tab1);
        spec.setIndicator("Tab One");
        host.addTab(spec);

        //Tab 2
        spec = host.newTabSpec("Tab Two");
        spec.setContent(R.id.tab2);
        spec.setIndicator("Tab Two");
        host.addTab(spec);

        //Tab 3
        spec = host.newTabSpec("Tab Three");
        spec.setContent(R.id.tab3);
        spec.setIndicator("Tab Three");
        host.addTab(spec);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

OUTPUT :

回答2:

You have to Add TabLayout outside of AppBarLayout Below code is worked for me

<?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:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="project.annadata.HomeActivity">

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingTop="@dimen/appbar_padding_top"
    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:layout_scrollFlags="scroll|enterAlways"
        app:popupTheme="@style/AppTheme.PopupOverlay">

    </android.support.v7.widget.Toolbar>

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

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

<android.support.v4.view.ViewPager
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior" />
<android.support.design.widget.TabLayout
    android:id="@+id/tabs2"
    android:layout_width="match_parent"
    android:layout_gravity="end|bottom"
    android:layout_height="wrap_content" />
<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="end|bottom"
    android:layout_marginRight="20dp"
    android:layout_marginBottom="50dp"
    app:srcCompat="@android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>

回答3:

Try to add ` android:layout_alignParentBottom= "true" property in your xml

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