Merhaba Arkadaşlar,

Bugünki yazımız android’te bottom navigation bar üzerine olacak. İlk olarak Bottom navigation Bar nedir bu konuya değinicez ve sonrasında da bir örnek yapacağız.

Bottom Navigation Bar: Youtube’ın yeni özelliğinden yola çıkarsam bizim Tabhostumuz yerine altta kullanılan geçişli menü bottom navigation drawer’dır. Bugün şunu yapıcaz örnek bir github projesini import edip kullanıcaz.

İmport Edilecek Kütüphane :

//github.com/Devlight/NavigationTabBar

Örnek:

MainActivity:

import android.graphics.Color;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.ArrayList;

import devlight.io.library.ntb.NavigationTabBar;

public class MainActivity extends AppCompatActivity {

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

    private void initUI() {
        final ViewPager viewPager = (ViewPager) findViewById(R.id.vp_horizontal_ntb);
        viewPager.setAdapter(new PagerAdapter() {
            @Override
            public int getCount() {
                return 5;
            }

            @Override
            public boolean isViewFromObject(final View view, final Object object) {
                return view.equals(object);
            }

            @Override
            public void destroyItem(final View container, final int position, final Object object) {
                ((ViewPager) container).removeView((View) object);
            }

            @Override
            public Object instantiateItem(final ViewGroup container, final int position) {
                final View view = LayoutInflater.from(getBaseContext()).inflate(R.layout.fragment1, null, false);
                final View view1 = LayoutInflater.from(getBaseContext()).inflate(R.layout.fragment2, null, false);
                final View view2 = LayoutInflater.from(getBaseContext()).inflate(R.layout.fragment3, null, false);
                final View view3 = LayoutInflater.from(getBaseContext()).inflate(R.layout.fragment4, null, false);
                final View view4 = LayoutInflater.from(getBaseContext()).inflate(R.layout.fragment5, null, false);

                View viewarr[]={view,view1,view2,view3,view4};
                container.addView(viewarr[position]);
                return viewarr[position];
            }
        });

        final String[] colors = getResources().getStringArray(R.array.default_preview);

        final NavigationTabBar navigationTabBar = (NavigationTabBar) findViewById(R.id.ntb_horizontal);
        final ArrayList<NavigationTabBar.Model> models = new ArrayList<>();
        models.add(
                new NavigationTabBar.Model.Builder(
                        getResources().getDrawable(R.drawable.ic_first),
                        Color.parseColor(colors[0]))
                        .selectedIcon(getResources().getDrawable(R.drawable.ic_sixth))
                        .title("Heart")
                        .build()
        );
        models.add(
                new NavigationTabBar.Model.Builder(
                        getResources().getDrawable(R.drawable.ic_second),
                        Color.parseColor(colors[1]))
//                        .selectedIcon(getResources().getDrawable(R.drawable.ic_eighth))
                        .title("Cup")
                        .build()
        );
        models.add(
                new NavigationTabBar.Model.Builder(
                        getResources().getDrawable(R.drawable.ic_third),
                        Color.parseColor(colors[2]))
                        .selectedIcon(getResources().getDrawable(R.drawable.ic_seventh))
                        .title("Diploma")
                        .build()
        );
        models.add(
                new NavigationTabBar.Model.Builder(
                        getResources().getDrawable(R.drawable.ic_fourth),
                        Color.parseColor(colors[3]))
//                        .selectedIcon(getResources().getDrawable(R.drawable.ic_eighth))
                        .title("Flag")
                        .build()
        );
        models.add(
                new NavigationTabBar.Model.Builder(
                        getResources().getDrawable(R.drawable.ic_fifth),
                        Color.parseColor(colors[4]))
                        .selectedIcon(getResources().getDrawable(R.drawable.ic_eighth))
                        .title("Medal")
                        .build()
        );

        navigationTabBar.setModels(models);
        navigationTabBar.setViewPager(viewPager, 2);
        navigationTabBar.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(final int position, final float positionOffset, final int positionOffsetPixels) {

            }

            @Override
            public void onPageSelected(final int position) {
                System.out.println( "pos:" + position);

                navigationTabBar.getModels().get(position).hideBadge();
            }

            @Override
            public void onPageScrollStateChanged(final int state) {

            }
        });

        navigationTabBar.postDelayed(new Runnable() {
            @Override
            public void run() {
                for (int i = 0; i < navigationTabBar.getModels().size(); i++) {
                    final NavigationTabBar.Model model = navigationTabBar.getModels().get(i);
                    navigationTabBar.postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            model.showBadge();
                        }
                    }, i * 100);
                }
            }
        }, 500);
    }
}

Fragment’ler 1-2-3-4-5:

import android.support.v4.app.Fragment;
import android.os.Build;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment1 extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater,
                             ViewGroup container, Bundle savedInstanceState) {

        //Inflate the layout for this fragment

        return inflater.inflate(
                R.layout.fragment1, container, false);
    }
}

activity_horizontal_ntb.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="//schemas.android.com/apk/res/android"
    xmlns:app="//schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:tools="//schemas.android.com/tools"
    android:background="#423752"
    android:orientation="vertical">

    <android.support.v4.view.ViewPager
        android:id="@+id/vp_horizontal_ntb"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

    <devlight.io.library.ntb.NavigationTabBar
        android:id="@+id/ntb_horizontal"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        app:ntb_badge_gravity="top"
        app:ntb_badge_position="right"
        app:ntb_badged="true"
        app:ntb_scaled="true"
        app:ntb_tinted="true"
        app:ntb_title_mode="all"
        app:ntb_titled="true"
        app:ntb_swiped="true"/>

</LinearLayout>

Fragment’lerin layout dosyası:

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

</RelativeLayout>

Gradle dosyasına eklencek import:

compile 'devlight.io:navigationtabbar:1.2.5'

Uygulama Ekran görüntüsü: