Localizator Android Studio 3.0

build.gradle (Module: app) 3.0

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.example.android.localizator"
        minSdkVersion 15
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'

    compile 'com.android.support:recyclerview-v7:26.1.0'
}

main_AndroidManifest.xml

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

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

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".add_address.AddAddressActivity" />
        <activity android:name=".show_addresses.ShowAddressesActivity"></activity>
    </application>

</manifest>

main_java_com_example_android_localizator_add_address_AddAddressActivity.java

package com.example.android.localizator.add_address;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.example.android.localizator.R;

public class AddAddressActivity extends AppCompatActivity {

    TextView edtAddress;
    Button btnAdd;

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

        edtAddress = findViewById(R.id.edt_address);
        btnAdd = findViewById(R.id.btn_add);

        btnAdd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                //verifica se há um endereço digitado
                if (edtAddress.getText().toString().isEmpty()){
                    Toast.makeText(AddAddressActivity.this, "Digite o endereço que deseja adicionar", Toast.LENGTH_SHORT).show();
                }else {
                    //retorna o endereço para a MainActivity
                    Intent resultIntent = new Intent();
                    resultIntent.putExtra("movie_name", edtAddress.getText().toString());
                    setResult(Activity.RESULT_OK, resultIntent);
                    finish();
                }
            }
        });
    }
}

main_java_com_example_android_localizator_main_MainActivity.java

package com.example.android.localizator.main;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.example.android.localizator.R;
import com.example.android.localizator.add_address.AddAddressActivity;
import com.example.android.localizator.show_addresses.ShowAddressesActivity;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    Button btnAddAddress;
    Button btnShowAddresses;

    //código utilizado para adicionar novos endereços
    private final int RC_ADD_ADDRESS = 123;
    //lista de endereços
    private ArrayList<String> lstAddresses = new ArrayList<>();

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

        btnAddAddress = findViewById(R.id.btn_add_address);
        btnShowAddresses = findViewById(R.id.btn_show_addresses);

        //abre a activity para adicionar endereços
        btnAddAddress.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                Intent openAddAddressActivity = new Intent(MainActivity.this, AddAddressActivity.class);
                startActivityForResult(openAddAddressActivity, RC_ADD_ADDRESS);
            }

        });

        //abre a activity para exibir os endereços cadastrados
        btnShowAddresses.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //verifica se há endereços cadastrados antes executar a activity
                if(lstAddresses.size() <= 0){
                    Toast.makeText(MainActivity.this, "Não há endereços cadastrados", Toast.LENGTH_SHORT).show();
                }else{
                    //abre a ShowAddressActivity enviando a lista de endereços
                    Intent openShowAddressActivity = new Intent(MainActivity.this, ShowAddressesActivity.class);
                    openShowAddressActivity.putStringArrayListExtra("addresses_list", lstAddresses);
                    startActivity(openShowAddressActivity);
                }

            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        //captura o resultado da tela de cadastro de endereços e adiciona na lista
        if(requestCode == RC_ADD_ADDRESS && resultCode == Activity.RESULT_OK) {
            lstAddresses.add(data.getStringExtra("movie_name"));
        }
    }
}

main_java_com_example_android_localizator_show_addresses_AddressesAdapter.java

package com.example.android.localizator.show_addresses;

import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.android.localizator.R;

import java.util.List;

public class AddressesAdapter extends RecyclerView.Adapter<AddressesAdapter.ViewHolder>{

    private List<String> addressesList;

    //Construtor para receber a lista
    AddressesAdapter(List<String> addressesList){
        this.addressesList = addressesList;
    }

    //Infla o layout XML
    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.address_list_item, parent, false);
        return new ViewHolder(v);
    }

    //Seta os dados na lista
    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        holder.tvAddress.setText(addressesList.get(position));
    }

    //Retorna o tamanho da lista
    @Override
    public int getItemCount() {
        return addressesList.size();
    }

    //Mapeamento dos componentes da View
    public class ViewHolder extends RecyclerView.ViewHolder{

        TextView tvAddress;

        public ViewHolder(View itemView) {
            super(itemView);
            tvAddress = itemView.findViewById(R.id.tv_address);
        }
    }
}

main_java_com_example_android_localizator_show_addresses_ShowAddressesActivity.java

package com.example.android.localizator.show_addresses;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

import com.example.android.localizator.R;

import java.util.ArrayList;

public class ShowAddressesActivity extends AppCompatActivity {

    RecyclerView rvAddresses;

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

        rvAddresses = findViewById(R.id.rv_addresses);

        //captura a lista enviada pela MainActivity
        ArrayList<String> lstAddresses = getIntent().getStringArrayListExtra("addresses_list");
        //instancia um AddressesAdapter passando a lista de endereços
        AddressesAdapter addressesAdapter = new AddressesAdapter(lstAddresses);

        //seta o adapter no Recycler View
        rvAddresses.setAdapter(addressesAdapter);

        //cria o gerenciador de layouts
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        //seta o gerenciador de layouts no Recycler View
        rvAddresses.setLayoutManager(layoutManager);
    }
}

main_res_layout_activity_add_address.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.android.localizator.add_address.AddAddressActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_margin="16dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/address"
            android:textAppearance="@style/Base.TextAppearance.AppCompat.Title"/>

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:inputType="textPostalAddress"
            android:id="@+id/edt_address"/>

        <Button
            android:layout_width="250dp"
            android:layout_height="wrap_content"
            android:text="@string/add"
            android:layout_marginTop="32dp"
            android:layout_gravity="center"
            android:id="@+id/btn_add"/>

    </LinearLayout>

</ScrollView>

main_res_layout_activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.android.localizator.main.MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <Button
            android:layout_width="250dp"
            android:layout_height="wrap_content"
            android:text="@string/add_address"
            android:id="@+id/btn_add_address"/>

        <Button
            android:layout_width="250dp"
            android:layout_height="wrap_content"
            android:text="@string/show_addresses"
            android:id="@+id/btn_show_addresses"/>

    </LinearLayout>

</ScrollView>

main_res_layout_activity_show_addresses.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.android.localizator.show_addresses.ShowAddressesActivity">

    <android.support.v7.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scrollbars="vertical"
        android:id="@+id/rv_addresses"/>

</LinearLayout>

main_res_layout_address_list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:id="@+id/address_item">

    <TextView
        android:layout_marginLeft="16dp"
        android:layout_marginRight="16dp"
        android:paddingTop="8dp"
        android:paddingBottom="8dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Rua Teste, 01, Cidade Teste - ET"
        android:id="@+id/tv_address"/>

    <View
        android:layout_width="match_parent"
        android:layout_marginRight="8dp"
        android:layout_marginLeft="8dp"
        android:layout_height="1dp"
        android:background="@color/colorPrimary"/>

</LinearLayout>

main_res_values_strings.xml

<resources>
    <string name="app_name">Localizator</string>
    <string name="add_address">Adicionar Endereço</string>
    <string name="show_addresses">Mostrar Endereços</string>
    <string name="address">Endereço</string>
    <string name="add">Adicionar</string>
</resources>

main_res_values_styles.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="AppThemeNoActionBar" parent="Theme.AppCompat.Light.NoActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

</resources>