Save and check password

Encrypted Notebook.iml

@@ -12,9 +12,8 @@
     <exclude-output />
     <content url="file://$MODULE_DIR$">
       <excludeFolder url="file://$MODULE_DIR$/.gradle" />
-      <excludeFolder url="file://$MODULE_DIR$/build" />
     </content>
-    <orderEntry type="jdk" jdkName="JDK" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

app/src/main/AndroidManifest.xml

@@ -10,6 +10,10 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
+        <activity
+            android:name=".SetPasswordActivity"
+            android:label="@string/title_activity_set_password"
+            android:theme="@style/AppTheme.NoActionBar"></activity>
         <activity
             android:name=".MainActivity"
             android:label="@string/app_name"

app/src/main/java/com/example/encryptednotebook/MainActivity.java

@@ -1,5 +1,7 @@
 package com.example.encryptednotebook;
 
+import android.app.Activity;
+import android.content.Intent;
 import android.os.Bundle;
 
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
@@ -8,25 +10,46 @@ import com.google.android.material.snackbar.Snackbar;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
 
+import android.preference.PreferenceManager;
 import android.view.View;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
 
 public class MainActivity extends AppCompatActivity {
 
+    public static final int SET_PASSWORD_REQUEST = 1;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         Toolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
+        TextView hello = findViewById(R.id.hello);
+        hello.setText("Wpisz hasło");
+        boolean isPassCreated = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()).getBoolean("PASSWORD_CREATED", false);
+        if(!isPassCreated){
+            Intent pickContactIntent = new Intent(this, SetPasswordActivity.class);
+            startActivityForResult(pickContactIntent, SET_PASSWORD_REQUEST);
+        }
 
         FloatingActionButton fab = findViewById(R.id.fab);
         fab.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
+                EditText password = findViewById(R.id.password);
-                        .setAction("Action", null).show();
+                String passValue = password.getText().toString();
+                String savedPassValue = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()).getString("PASSWORD", null);
+                if(passValue.equals(savedPassValue)) {
+                    Snackbar.make(view, "Dobre hasło", Snackbar.LENGTH_LONG)
+                            .setAction("Action", null).show();
+                } else {
+                    Snackbar.make(view, "Złe hasło", Snackbar.LENGTH_LONG)
+                            .setAction("Action", null).show();
+                }
             }
         });
     }
@@ -52,4 +75,18 @@ public class MainActivity extends AppCompatActivity {
 
         return super.onOptionsItemSelected(item);
     }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+
+        if (requestCode == SET_PASSWORD_REQUEST) {
+            if(resultCode == Activity.RESULT_OK){
+                Toast.makeText(getApplicationContext(), "Udało się ustawić hasło", Toast.LENGTH_SHORT).show();
+            }
+            if (resultCode == Activity.RESULT_CANCELED) {
+                Intent pickContactIntent = new Intent(this, SetPasswordActivity.class);
+                startActivityForResult(pickContactIntent, SET_PASSWORD_REQUEST);
+            }
+        }
+    }
 }

app/src/main/java/com/example/encryptednotebook/SetPasswordActivity.java

@@ -0,0 +1,50 @@
+package com.example.encryptednotebook;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import com.google.android.material.snackbar.Snackbar;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+
+import android.preference.PreferenceManager;
+import android.view.View;
+import android.widget.EditText;
+
+public class SetPasswordActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_set_password);
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+
+        FloatingActionButton fab = findViewById(R.id.fab);
+        fab.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                EditText setPass1 = findViewById(R.id.setPass1);
+                String setPass1Value = setPass1.getText().toString();
+                EditText setPass2 = findViewById(R.id.setPass2);
+                String setPass2Value = setPass2.getText().toString();
+                if (setPass1Value.equals(setPass2Value)) {
+                    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
+                    prefs.edit().putBoolean("PASSWORD_CREATED", true).apply();
+                    prefs.edit().putString("PASSWORD", setPass1Value).apply();
+                    Intent resultIntent = new Intent();
+                    setResult(Activity.RESULT_OK, resultIntent);
+                    finish();
+                } else {
+                    Snackbar.make(view, "Hasła się różnią, wpisz takie same hasła", Snackbar.LENGTH_LONG)
+                            .setAction("Action", null).show();
+                }
+            }
+        });
+    }
+
+}

app/src/main/res/layout/activity_set_password.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout 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:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".SetPasswordActivity">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/AppTheme.AppBarOverlay">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/AppTheme.PopupOverlay" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <include layout="@layout/content_set_password" />
+
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:layout_margin="@dimen/fab_margin"
+        app:srcCompat="@android:drawable/ic_dialog_email" />
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/content_main.xml

@@ -9,6 +9,7 @@
     tools:showIn="@layout/activity_main">
 
     <TextView
+        android:id="@+id/hello"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="Hello World!"
@@ -17,4 +18,14 @@
         app:layout_constraintRight_toRightOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <EditText
+        android:id="@+id/password"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:ems="10"
+        android:inputType="textPassword"
+        app:layout_constraintTop_toBottomOf="@+id/hello"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/content_set_password.xml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout 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:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context=".SetPasswordActivity"
+    tools:showIn="@layout/activity_set_password">
+
+    <TextView
+        android:id="@+id/setPassLabel"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Wpisz hasło"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <EditText
+        android:id="@+id/setPass1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:ems="10"
+        android:inputType="textPassword"
+        app:layout_constraintTop_toBottomOf="@+id/setPassLabel"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent" />
+
+    <EditText
+        android:id="@+id/setPass2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:ems="10"
+        android:inputType="textPassword"
+        app:layout_constraintTop_toBottomOf="@+id/setPass1"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values/strings.xml

@@ -1,4 +1,5 @@
 <resources>
     <string name="app_name">Encrypted Notebook</string>
     <string name="action_settings">Settings</string>
+    <string name="title_activity_set_password">SetPasswordActivity</string>
 </resources>