Создание формы для добавления тренировок

app/src/main/java/com/example/timert/CreatingTraining.kt

@@ -0,0 +1,53 @@
+package com.example.timert
+
+import android.app.AlertDialog
+import android.content.Intent
+import android.os.Bundle
+import android.widget.Button
+import android.widget.ImageButton
+import androidx.activity.enableEdgeToEdge
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+
+class CreatingTraining : AppCompatActivity() {
+    private var isSave = false
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        enableEdgeToEdge()
+        setContentView(R.layout.activity_creating_training)
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
+            insets
+        }
+        val buttonSave: Button = findViewById(R.id.btn_save)
+        buttonSave.setOnClickListener {
+
+            isSave=true
+
+        }
+        val button_on_main: Button = findViewById(R.id.btn_on_main)
+        button_on_main.setOnClickListener {
+            if(isSave==false){
+                AlertDialog.Builder(this)
+                    .setTitle("Изменения не сохранены")
+                    .setMessage("Продолжить без сохранения?")
+                    .setPositiveButton("Да") { _, _ ->
+
+                        val intent = Intent(this, MainActivity::class.java)
+                        startActivity(intent)
+                    }
+                    .setNegativeButton("Нет") { dialog, _ ->
+                        dialog.dismiss()
+                    }
+                    .show()
+            }else{
+                val intent = Intent(this, MainActivity::class.java)
+                startActivity(intent)
+
+            }
+            }
+
+    }
+}

app/src/main/java/com/example/timert/MainActivity.kt

@@ -18,12 +18,18 @@ class MainActivity : AppCompatActivity() {
             v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
             insets
         }
-        var button: Button = findViewById(R.id.button2)
+        var button: Button = findViewById(R.id.button1)
 
         button.setOnClickListener{
             val intent = Intent(this,timer::class.java)
             startActivity(intent)
         }
+        var button2: Button = findViewById(R.id.button2)
+
+        button2.setOnClickListener{
+            val intent = Intent(this,CreatingTraining::class.java)
+            startActivity(intent)
+        }
     }
 
 }