not full functionality

.gitignore

@@ -9,5 +9,6 @@
 /.idea/assetWizardSettings.xml
 .DS_Store
 /build
+/.idea/
 /captures
 .externalNativeBuild

app/build.gradle

@@ -25,4 +25,6 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    implementation 'com.android.support:recyclerview-v7:28.0.0'
+    implementation 'com.android.support:design:28.0.0'
 }

app/src/main/java/ru/ok/technopolis/students/MainActivity.java

@@ -1,14 +1,140 @@
 package ru.ok.technopolis.students;
 
-import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.support.design.widget.FloatingActionButton;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.RecyclerView;
+import android.view.KeyEvent;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.RadioButton;
+import android.widget.RadioGroup;
+import android.widget.TextView;
+
+import java.util.ArrayList;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Random;
 
 public class MainActivity extends AppCompatActivity {
+    private Random random = new Random(2);
+    private int randomIcon;
+    private boolean sexOfStudent;
+    private Student currentStudent;
+
+    List<Student> students;
+    TextView text;
+    EditText firstName;
+    EditText secondName;
+    ImageView icon;
+    FloatingActionButton add;
+    View bottomView;
+    RadioGroup sex;
+    RadioButton male;
+    RadioButton female;
+    Button delete;
+    Button save;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        sex = findViewById(R.id.activity_main_sex);
+        male = findViewById(R.id.activity_main_sex_male);
+        female = findViewById(R.id.activity_main_sex_female);
+        add = findViewById(R.id.activity_main_fb_add);
+        text = findViewById(R.id.recycler_view_item_name);
+        firstName = findViewById(R.id.activity_main_first_name);
+        secondName = findViewById(R.id.activity_main_second_name);
+        icon = findViewById(R.id.activity_main_icon);
+        bottomView = findViewById(R.id.activity_main_bottom_view);
+        delete = findViewById(R.id.activity_main_delete);
+        save = findViewById(R.id.activity_main_save);
+        RecyclerView recyclerView = findViewById(R.id.activity_main_recycler_view);
+
+        StudentAdapter studentAdapter = new StudentAdapter(generateStudentList(),
+                new StudentAdapter.Listener() {
+                    @Override
+                    public void onStudentClick(Student student) {
+                        currentStudent = student;
+                        firstName.setText(student.getFirstName());
+                        secondName.setText(student.getSecondName());
+                        icon.setImageResource(student.getPhoto());
+                        add.hide();
+                        bottomView.setVisibility(View.VISIBLE);
+
+                        if (student.isMaleGender())
+                            male.toggle();
+                        else female.toggle();
+                    }
+                });
+
+        recyclerView.setAdapter(studentAdapter);
+        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
+        recyclerView.setLayoutManager(linearLayoutManager);
+
+        add.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                add.hide();
+                bottomView.setVisibility(View.VISIBLE);
+
+                firstName.setText("");
+                secondName.setText("");
+                sex.clearCheck();
+                icon.setVisibility(View.GONE);
+            }
+        });
+
+        delete.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                students.remove(currentStudent);
+                bottomView.setVisibility(View.GONE);
+                add.show();
+
+            }
+        });
+
+        save.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Student student = new Student(firstName.getText().toString(),
+                        secondName.getText().toString(),
+                        sexOfStudent,
+                        randomIcon);
+                students.add(student);
+
+                bottomView.setVisibility(View.GONE);
+                add.show();
+            }
+        });
+
+        sex.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(RadioGroup group, int checkedId) {
+                switch (checkedId) {
+                    case R.id.activity_main_sex_male:
+                        sexOfStudent = true;
+                        randomIcon = R.drawable.male_3;
+                        break;
+                    case R.id.activity_main_sex_female:
+                        sexOfStudent = false;
+                        randomIcon = R.drawable.female_3;
+                }
+            }
+        });
     }
 
-}
+        private List<Student> generateStudentList() {
+            students = new LinkedList<>();
+            students.add(new Student("Вася", "Пупкин", true, R.drawable.male_1));
+            students.add(new Student("Инна", "Вупкина", false, R.drawable.female_1));
+            students.add(new Student("Лариса", "Купкина", false, R.drawable.female_2));
+            return students;
+        }
+    }

app/src/main/java/ru/ok/technopolis/students/Student.java

@@ -7,14 +7,14 @@ public class Student {
     private boolean maleGender;
     private int photo;
 
-    public Student(String firstName, String secondName, boolean maleGender, int photo) {
+    Student(String firstName, String secondName, boolean maleGender, int photo) {
         this.firstName = firstName;
         this.secondName = secondName;
         this.maleGender = maleGender;
         this.photo = photo;
     }
 
-    public String getFirstName() {
+    String getFirstName() {
         return firstName;
     }
 
@@ -38,7 +38,7 @@ public void setMaleGender(boolean maleGender) {
         this.maleGender = maleGender;
     }
 
-    public int getPhoto() {
+    int getPhoto() {
         return photo;
     }
 

app/src/main/java/ru/ok/technopolis/students/StudentAdapter.java

@@ -0,0 +1,69 @@
+package ru.ok.technopolis.students;
+
+import android.support.annotation.NonNull;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.support.v7.widget.RecyclerView;
+
+import java.util.List;
+
+public class StudentAdapter extends RecyclerView.Adapter<StudentAdapter.StudentViewHolder> {
+    private final Listener onStudentClickListener;
+    private final List<Student> students;
+
+    StudentAdapter(List<Student> students, Listener onStudentClickListener) {
+        this.students = students;
+        this.onStudentClickListener = onStudentClickListener;
+    }
+
+    @NonNull
+    @Override
+    public StudentViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
+        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.recycler_view_item,
+                viewGroup, false);
+        view.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                onStudentClickListener.onStudentClick((Student) v.getTag());
+            }
+        });
+        return new StudentViewHolder(view);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull StudentViewHolder viewHolder, int i) {
+        Student student = students.get(i);
+        viewHolder.bind(student);
+        viewHolder.itemView.setTag(student);
+    }
+
+    @Override
+    public int getItemCount() {
+        return students.size();
+    }
+
+    static final class StudentViewHolder extends RecyclerView.ViewHolder {
+
+        private final TextView nameTextView;
+        private final ImageView iconImageView;
+
+        StudentViewHolder(@NonNull View itemView) {
+            super(itemView);
+            nameTextView = itemView.findViewById(R.id.recycler_view_item_name);
+            iconImageView = itemView.findViewById(R.id.recycler_view_item_icon);
+        }
+
+        private void bind(@NonNull Student student) {
+            nameTextView.setText(String.format("%s %s", student.getFirstName(), student.getSecondName()));
+            iconImageView.setImageResource(student.getPhoto());
+        }
+    }
+
+    interface Listener {
+        void onStudentClick(Student student);
+    }
+
+}

app/src/main/res/drawable/recycler_view_item_circle_icon.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape android:shape="oval">
+            <stroke android:width="10dp" />
+        </shape>
+    </item>
+</selector>