How to change activity on bottom navigation button click?

Question

I want to use bottom navigation bar in my existing android app but the problem is all screen are activity ,is it possible to load activity without hiding the bottom navigation bar.

example: activity_main.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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v4.widget.NestedScrollView
        android:id="@+id/myScrollingContent"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <!-- Your loooooong scrolling content here. -->

    </android.support.v4.widget.NestedScrollView>
    <com.roughike.bottombar.BottomBar
        android:id="@+id/bottomBar"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_gravity="bottom"
        app:bb_tabXmlResource="@xml/bottom_bar"
        app:bb_behavior="shy"/>

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

this is my base activity,

MainActivity.java

public class MainActivity extends AppCompatActivity {

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

        setContentView(R.layout.activity_main);
        BottomBar bottomBar;
        bottomBar = (BottomBar) findViewById(R.id.bottomBar);
        bottomBar.setOnTabSelectListener(new OnTabSelectListener() {
            @Override
            public void onTabSelected(@IdRes int tabId) {
                if (tabId == R.id.matching) {
                    Log.i("matching","matching inside "+tabId);
                    Intent in=new Intent(getBaseContext(),Main2Activity.class);
                    startActivity(in);
                }else if (tabId == R.id.watchlist) {
                    Log.i("matching","watchlist inside "+tabId);
                    Intent in=new Intent(getBaseContext(),Main3Activity.class);
                    startActivity(in);
                }
            }
        });
    }
}

Main2Activity

public class Main2Activity extends MainActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.activity_main2);
        NestedScrollView dynamicContent = (NestedScrollView) findViewById(R.id.myScrollingContent);
        View wizard = getLayoutInflater().inflate(R.layout.activity_main2, null);
        dynamicContent.addView(wizard);

Main3Activity

public class Main3Activity extends MainActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.activity_main3);
        NestedScrollView dynamicContent = (NestedScrollView) findViewById(R.id.myScrollingContent);
        View wizard = getLayoutInflater().inflate(R.layout.activity_main3, null);
        dynamicContent.addView(wizard);


    }
}

manifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.bottom.bottomnavigation">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".Main2Activity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".MainActivity" />
        <activity android:name=".Main3Activity"></activity>
    </application>

</manifest>

Answer 1

I have solved this problem in following way:

1.Create one BaseActivity with bottom nav bar.

 package com.example.apple.bottomnavbarwithactivity;

 import android.content.Intent;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.util.Log;
 import android.widget.RadioButton;
 import android.widget.RadioGroup;

public class BaseActivity extends AppCompatActivity {


RadioGroup radioGroup1;
RadioButton deals;

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


    radioGroup1=(RadioGroup)findViewById(R.id.radioGroup1);
    deals = (RadioButton)findViewById(R.id.deals);
    radioGroup1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
    {
        @Override
        public void onCheckedChanged(RadioGroup group, int checkedId)
        {
            Intent in;
            Log.i("matching", "matching inside1 bro" + checkedId);
            switch (checkedId)
            {
                case R.id.matching:
                    Log.i("matching", "matching inside1 matching" +  checkedId);
                    in=new Intent(getBaseContext(),MatchingActivity.class);
                    startActivity(in);
                    overridePendingTransition(0, 0);
                    break;
                case R.id.watchList:
                    Log.i("matching", "matching inside1 watchlistAdapter" + checkedId);

                    in = new Intent(getBaseContext(), WatchlistActivity.class);
                    startActivity(in);
                    overridePendingTransition(0, 0);

                    break;
                case R.id.rates:
                    Log.i("matching", "matching inside1 rate" + checkedId);

                    in = new Intent(getBaseContext(),RatesActivity.class);
                    startActivity(in);
                    overridePendingTransition(0, 0);
                    break;
                case R.id.listing:
                    Log.i("matching", "matching inside1 listing" + checkedId);
                    in = new Intent(getBaseContext(), ListingActivity.class);
                    startActivity(in);
                    overridePendingTransition(0, 0);
                    break;
                case R.id.deals:
                    Log.i("matching", "matching inside1 deals" + checkedId);
                    in = new Intent(getBaseContext(), DealsActivity.class);
                    startActivity(in);
                    overridePendingTransition(0, 0);
                    break;
                default:
                    break;
            }
        }
    });
   }
 }

BaseActivity layout named base_activity.xml

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="56dp"
        android:elevation="10dp"
        android:background="@color/white"
        android:id="@+id/bottonNavBar"
        android:paddingTop="5dp"
        android:orientation="horizontal"
        android:layout_alignParentBottom="true"
        android:foregroundGravity="bottom">


        <RadioGroup
            android:id="@+id/radioGroup1"
            android:gravity="center"
            android:layout_height="match_parent"
            android:layout_width="match_parent"
            android:orientation="horizontal"
            android:baselineAligned="false">

            <RadioButton
                android:layout_width="match_parent"
                android:gravity="center"
                android:layout_height="match_parent"
                android:text="Matching"
                android:layout_weight="1"
                android:button="@null"
                android:padding="2dp"
                android:checked="false"
                android:textSize="12sp"
                android:drawableTop="@drawable/selector_matching"
                android:textColor="@drawable/selector_nav_text"
                android:id="@+id/matching"/>

            <RadioButton
                android:layout_width="match_parent"
                android:gravity="center"
                android:layout_height="match_parent"
                android:button="@null"
                android:layout_weight="1"
                android:padding="2dp"
                android:checked="false"
                android:textSize="12sp"
                android:drawableTop="@drawable/selector_watchlist"
                android:textColor="@drawable/selector_nav_text"
                android:id="@+id/watchList"
                android:text="Watchlist"/>

            <RadioButton
                android:layout_width="match_parent"
                android:gravity="center"
                android:layout_height="match_parent"
                android:id="@+id/rates"
                android:button="@null"
                android:paddingTop="5dp"
                android:paddingBottom="2dp"
                android:paddingLeft="2dp"
                android:paddingRight="2dp"
                android:layout_weight="1"
                android:checked="false"
                android:textSize="12sp"
                android:drawableTop="@drawable/selector_rates"
                android:textColor="@drawable/selector_nav_text"
                android:text="Rates"/>
            <RadioButton
                android:layout_width="match_parent"
                android:gravity="center"
                android:layout_height="match_parent"
                android:button="@null"
                android:padding="2dp"
                android:checked="false"
                android:layout_weight="1"
                android:textSize="12sp"
                android:drawableTop="@drawable/selector_deals"
                android:textColor="@drawable/selector_nav_text"
                android:id="@+id/deals"
                android:text="Deals"/>
            <RadioButton
                android:layout_width="match_parent"
                android:gravity="center"
                android:layout_height="match_parent"
                android:button="@null"
                android:padding="2dp"
                android:checked="false"
                android:layout_weight="1"
                android:textSize="12sp"
                android:drawableTop="@drawable/selector_listing"
                android:textColor="@drawable/selector_nav_text"
                android:id="@+id/listing"
                android:text="Listing"/>


        </RadioGroup>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/dynamicContent"
        android:orientation="vertical"
        android:layout_marginBottom="56dp"
        android:background="@color/white"
        android:layout_gravity="bottom">
    </LinearLayout>

2.extend BaseActivity in all the activity that you want to open on bottom nav click and also need to inflate the activity layouts For example, I have created five sample activity.

i] MatchingActivity.

  package com.example.apple.bottomnavbarwithactivity;

    import android.graphics.Color;
    import android.os.Bundle;
    import android.support.design.widget.FloatingActionButton;
    import android.support.design.widget.Snackbar;
    import android.support.v7.app.AppCompatActivity;
    import android.support.v7.widget.Toolbar;
    import android.view.View;
    import android.widget.LinearLayout;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;
              //extends our custom BaseActivity
    public class MatchingActivity extends BaseActivity {
        LinearLayout dynamicContent,bottonNavBar;

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


                       //dynamically include the  current activity      layout into  baseActivity layout.now all the view of baseactivity is   accessible in current activity.
            dynamicContent = (LinearLayout)  findViewById(R.id.dynamicContent);
            bottonNavBar= (LinearLayout) findViewById(R.id.bottonNavBar);
            View wizard = getLayoutInflater().inflate(R.layout.activity_matching, null);
            dynamicContent.addView(wizard);


              //get the reference of RadioGroup.

            RadioGroup rg=(RadioGroup)findViewById(R.id.radioGroup1);
            RadioButton rb=(RadioButton)findViewById(R.id.matching);

                 // Change the corresponding icon and text color on nav button click.

            rb.setCompoundDrawablesWithIntrinsicBounds( 0,R.drawable.ic_matching_clicked, 0,0);
            rb.setTextColor(Color.parseColor("#3F51B5"));
        }

    }

ii]WatchlistActivity

 package com.example.apple.bottomnavbarwithactivity;

    import android.graphics.Color;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.LinearLayout;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;

    public class WatchlistActivity extends AppCompatActivity {
        LinearLayout dynamicContent,bottonNavBar;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            //setContentView(R.layout.activity_watchlist1);

            dynamicContent = (LinearLayout) findViewById(R.id.dynamicContent);
            bottonNavBar= (LinearLayout) findViewById(R.id.bottonNavBar);
            View wizard = getLayoutInflater().inflate(R.layout.activity_watchlist1, null);
            dynamicContent.addView(wizard);

            RadioGroup rg=(RadioGroup)findViewById(R.id.radioGroup1);
            RadioButton rb=(RadioButton)findViewById(R.id.watchList);
            rb.setCompoundDrawablesWithIntrinsicBounds( 0,R.drawable.favourite_heart_selected, 0,0);
            rb.setTextColor(Color.parseColor("#3F51B5"));
        }
    }

iii]RatesActivity

  package com.example.apple.bottomnavbarwithactivity;

    import android.graphics.Color;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.LinearLayout;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;

    public class RatesActivity extends BaseActivity {
        LinearLayout dynamicContent,bottonNavBar;

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

            dynamicContent = (LinearLayout) findViewById(R.id.dynamicContent);
            bottonNavBar= (LinearLayout) findViewById(R.id.bottonNavBar);
            View wizard = getLayoutInflater().inflate(R.layout.activity_rates, null);
            dynamicContent.addView(wizard);

            RadioGroup rg=(RadioGroup)findViewById(R.id.radioGroup1);
            RadioButton rb=(RadioButton)findViewById(R.id.rates);
            rb.setCompoundDrawablesWithIntrinsicBounds( 0,R.drawable.ic_rate_clicked, 0,0);
            rb.setTextColor(Color.parseColor("#3F51B5"));
        }
    }

iv] ListingActivity

 package com.example.apple.bottomnavbarwithactivity;

    import android.graphics.Color;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.LinearLayout;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;

    public class ListingActivity extends BaseActivity {
        LinearLayout dynamicContent,bottonNavBar;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
             //setContentView(R.layout.activity_listing);



            dynamicContent = (LinearLayout) findViewById(R.id.dynamicContent);
            bottonNavBar= (LinearLayout) findViewById(R.id.bottonNavBar);
            View wizard = getLayoutInflater().inflate(R.layout.activity_listing, null);
            dynamicContent.addView(wizard);

            RadioGroup rg=(RadioGroup)findViewById(R.id.radioGroup1);
            RadioButton rb=(RadioButton)findViewById(R.id.listing);
            rb.setCompoundDrawablesWithIntrinsicBounds( 0,R.drawable.ic_listing_clicked, 0,0);
            rb.setTextColor(Color.parseColor("#3F51B5"));
        }
    }

v] DealsActivity

 package com.example.apple.bottomnavbarwithactivity;

    import android.graphics.Color;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.LinearLayout;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;

    public class DealsActivity extends BaseActivity {

        LinearLayout dynamicContent,bottonNavBar;


        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            //setContentView(R.layout.activity_deals);
            dynamicContent = (LinearLayout) findViewById(R.id.dynamicContent);
            bottonNavBar= (LinearLayout) findViewById(R.id.bottonNavBar);
            View wizard = getLayoutInflater().inflate(R.layout.activity_deals, null);
            dynamicContent.addView(wizard);

            RadioGroup rg=(RadioGroup)findViewById(R.id.radioGroup1);
            RadioButton rb=(RadioButton)findViewById(R.id.deals);
            rb.setCompoundDrawablesWithIntrinsicBounds( 0,R.drawable.ic_deals_clicked, 0,0);
            rb.setTextColor(Color.parseColor("#3F51B5"));



        }
    }

Note: make sure that you handle back press properly.I have not written any code for back press.

Answer 2

With Activity, you have to declare and init that BottomBar each time you load that activity.

With your problem, my answer is NO.

Btw, you can use Fragment which helps you solve this pretty good.

Time to learn something new, bro.

EDIT

You bring Fragment inside only 1 Activity. And let BottomBar inside Activity while all others view and data set inside Fragment.

Just try it!