logout button

app/src/main/java/asgardius/page/r3forumtest/MainScreen.java

@@ -3,9 +3,15 @@ package asgardius.page.r3forumtest;
 import androidx.appcompat.app.AppCompatActivity;
 
 import android.content.Intent;
+import android.database.sqlite.SQLiteDatabase;
 import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
 import android.widget.Toast;
 
+import org.json.JSONObject;
+
 import java.io.BufferedReader;
 import java.io.InputStreamReader;
 import java.net.URL;
@@ -20,12 +26,21 @@ public class MainScreen extends AppCompatActivity {
     boolean success;
     BufferedReader br;
     StringBuilder sb;
+    JSONObject jsonObj;
+    SQLiteDatabase db;
+    MyDbHelper dbHelper;
+    TextView id;
+    Button logout;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main_screen);
         username = getIntent().getStringExtra("username");
+        id = (TextView) findViewById(R.id.username);
+        logout = (Button)findViewById(R.id.logout);
+        dbHelper = new MyDbHelper(this);
+        id.setText(username);
         Thread login = new Thread(new Runnable() {
 
             @Override
@@ -54,6 +69,7 @@ public class MainScreen extends AppCompatActivity {
                             sb.append(output);
                         }
                         System.out.println(sb.toString());
+                        jsonObj = new JSONObject(sb.toString());
                     } else {
                         success = false;
                     }
@@ -86,8 +102,54 @@ public class MainScreen extends AppCompatActivity {
                 }
             }
         });
-
         login.start();
+        logout.setOnClickListener(new View.OnClickListener(){
+            @Override
+            public void onClick(View view) {
+                //buttonaction
+                Thread logout = new Thread(new Runnable() {
+
+                    @Override
+                    public void run() {
+                        try  {
+                            db = dbHelper.getWritableDatabase();
+                            db.execSQL("DELETE FROM account");
+                            db.close();
+                            runOnUiThread(new Runnable() {
+
+                                @Override
+                                public void run() {
+                                    //Test
+                                    mainMenu();
+                                }
+                            });
+
+                        } catch (Exception e) {
+                            e.printStackTrace();
+                            runOnUiThread(new Runnable() {
+
+                                @Override
+                                public void run() {
+                                    Toast.makeText(getApplicationContext(), "Conexión fallida", Toast.LENGTH_SHORT).show();
+                                }
+                            });
+                            //Toast.makeText(getApplicationContext(),getResources().getString(R.string.media_list_fail), Toast.LENGTH_SHORT).show();
+                            //finish();
+                        }
+                    }
+                });
+                logout.start();
+            }
+        });
+    }
+
+    private void mainMenu() {
+
+        Intent intent = new Intent(this, MainActivity.class);
+        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+        intent.putExtra("EXIT", true);
+        startActivity(intent);
+
     }
 
     public void onBackPressed(){

app/src/main/java/asgardius/page/r3forumtest/SignUp.java

@@ -11,7 +11,6 @@ import android.widget.EditText;
 import android.widget.Toast;
 
 import java.net.URL;
-import java.util.Locale;
 
 import javax.net.ssl.HttpsURLConnection;
 
@@ -90,7 +89,7 @@ public class SignUp extends AppCompatActivity {
                                         //Test
                                         if (success) {
                                             Toast.makeText(getApplicationContext(), "Registro exitoso", Toast.LENGTH_SHORT).show();
-                                            mainmenu();
+                                            mainMenu();
                                         } else {
                                             Toast.makeText(getApplicationContext(), "El usuario ya existe", Toast.LENGTH_SHORT).show();
                                         }
@@ -118,7 +117,7 @@ public class SignUp extends AppCompatActivity {
         });
     }
 
-    private void mainmenu() {
+    private void mainMenu() {
 
         Intent intent = new Intent(this, MainActivity.class);
         intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

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

@@ -9,12 +9,34 @@
     android:background="@drawable/galaxy"
     tools:context=".MainScreen">
 
-    <TextView
+    <LinearLayout
+        android:id="@+id/linearLayoutSubmit"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="70dp"
-        android:text="Bienvenido al foro"
+        android:layout_margin="20dp"
-        android:textAlignment="center"
+        android:orientation="horizontal"
-        android:textColor="@color/white"
+        tools:ignore="MissingConstraints"
-        android:textSize="25sp" />
+        tools:layout_editor_absoluteX="20dp">
+
+        <TextView
+            android:id="@+id/username"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:textAlignment="center"
+            android:textColor="@color/white"
+            android:textSize="25sp" />
+
+        <Button
+            android:id="@+id/logout"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:backgroundTint="@color/black"
+            android:text="Salir"
+            android:textColor="@color/white"
+            tools:ignore="MissingConstraints" />
+
+    </LinearLayout>
 
 </LinearLayout>