Opening more than one fragment on a fragment

tchalla2581

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Aug 31, 2018
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Hello.
I created an app with a navigation drawer that uses fragment but I need to open multiple fragments from one fragment. I already successfully find a way to open one fragment but I want to open more than one. The code is bellow:

MainActitivity.java:
package com.urbannet.user2.receitassaudveis;

import android.support.annotation.NonNull;
import android.support.design.widget.NavigationView;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;

public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener{
private DrawerLayout drawer;

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

Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

drawer = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);

ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar,
R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();

if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new ReceitasSaudaveisFragment()).commit();
navigationView.setCheckedItem(R.id.receitas_saudaveis);}

FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();

fragmentTransaction.add(R.id.fragment_container, new ReceitasSaudaveisFragment());
fragmentTransaction.commit();

}

@override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.receitas_saudaveis:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new ReceitasSaudaveisFragment()).commit();
break;

case R.id.receitas_vegetarianas:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new ReceitasVegetarianasFragment()).commit();
break;

case R.id.receitas_peixe:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new ReceitasPeixeFragment()).commit();
break;

case R.id.receitas_sopas:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new ReceitasSopasFragment()).commit();
break;

case R.id.receitas_bolo:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new ReceitasBoloFragment()).commit();
break;

case R.id.receitas_carnes:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new ReceitasCarneFragment()).commit();
break;

case R.id.outras_receitas:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new OutrasReceitasFragment()).commit();
break;

case R.id.receitas_afrodesiacas:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new ReceitasAfrodesiacasFragment()).commit();
break;

case R.id.sobre_receitas_saudaveis:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new SobreReceitasSaudaveisFragment()).commit();
break;

}

drawer.closeDrawer(GravityCompat.START);

return true;
}

@override
public void onBackPressed() {
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {

super.onBackPressed();
}
}
}

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity"
tools:eek:penDrawer="start">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:eek:rientation="vertical">

<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/colorPrimary"
android:elevation="4dp"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

<FrameLayout
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent" />

</LinearLayout>

<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/nav_header"
app:menu="@menu/drawer_menu" />

</android.support.v4.widget.DrawerLayout>

ReceitasSaudaveisFragment.java:

package com.urbannet.user2.receitassaudveis;

import android.media.Image;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;

public class ReceitasSaudaveisFragment extends Fragment {
@nUllaBle
@override
public View onCreateView(@NonNull LayoutInflater inflater, @nUllaBle ViewGroup container, @nUllaBle Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_receitas_saudaveis, container, false);
Button btnFragment = (Button)view.findViewById(R.id.buttonRV);

btnFragment.setOnClickListener(new View.OnClickListener() {
@override
public void onClick(View view) {
FragmentTransaction fr=getFragmentManager().beginTransaction();
fr.replace(R.id.fragment_container, new ReceitasVegetarianasFragment());
fr.commit();
}
});
return view;

}
}

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

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ffffff"
android:eek:rientation="vertical">

//Receitas Vegetarianas
<Button
android:id="@+id/buttonRV"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="Receitas Vegetarianas"
android:textColor="#ffffff"
android:textSize="28sp" />

<ImageView
android:id="@+id/imgRV"
android:layout_width="match_parent"
android:layout_height="450dp"
android:scaleType="fitXY"
android:src="@drawable/receitas_vegetarianas" />

//Receitas de Peixe
<Button
android:id="@+id/buttonRP"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="Receitas de Peixe"
android:textColor="#ffffff"
android:textSize="30sp" />

<ImageView
android:id="@+id/imgRP"
android:layout_width="match_parent"
android:layout_height="450dp"
android:scaleType="fitXY"
android:src="@drawable/peixe" />

//Receitas de Sopa
<Button
android:id="@+id/buttonRS"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="Receitas de Soupa"
android:textColor="#ffffff"
android:textSize="30sp" />

<ImageView
android:id="@+id/imgRS"
android:layout_width="match_parent"
android:layout_height="450dp"
android:scaleType="fitXY"
android:src="@drawable/soupas" />

//Receitas de Bolo

<Button
android:id="@+id/buttonRB"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="Recitas de Bolo"
android:textColor="#ffffff"
android:textSize="30sp" />

<ImageView
android:id="@+id/imgRB"
android:layout_width="match_parent"
android:layout_height="450dp"
android:scaleType="fitXY"
android:src="@drawable/bolos1" />

//Receitas de Carne

<Button
android:id="@+id/buttonRC"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="Receitas de Carne"
android:textColor="#ffffff"
android:textSize="30sp" />

<ImageView
android:id="@+id/imgRC"
android:layout_width="match_parent"
android:layout_height="450dp"
android:scaleType="fitXY"
android:src="@drawable/carne" />

//Outras Receitas

<Button
android:id="@+id/buttonOR"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="Outras Receitas"
android:textColor="#ffffff"
android:textSize="30sp" />

<ImageView
android:id="@+id/imgOR"
android:layout_width="match_parent"
android:layout_height="450dp"
android:scaleType="fitXY"
android:src="@drawable/outras" />

//Receitas Afrodisíacas

<Button
android:id="@+id/buttonRA"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="Receitas Afrodisíacas"
android:textColor="#ffffff"
android:textSize="30sp" />

<ImageView
android:id="@+id/imgRA"
android:layout_width="match_parent"
android:layout_height="450dp"
android:scaleType="fitXY"
android:src="@drawable/afrodisiaco1" />

</LinearLayout>

</ScrollView>