上传Android项目

app/src/main/java/com/example/myapplication/OnboardingActivity.kt

@@ -0,0 +1,27 @@
+package com.example.myapplication
+
+import android.content.Intent
+import android.os.Bundle
+import android.widget.Button
+import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+
+class OnboardingActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_onboarding)
+
+        val btnStart = findViewById<TextView>(R.id.tv_skip)
+
+        btnStart.setOnClickListener {
+            // 标记已经不是第一次启动了
+            val prefs = getSharedPreferences("app_prefs", MODE_PRIVATE)
+            prefs.edit().putBoolean("is_first_launch", false).apply()
+
+            // 跳转到主界面
+            startActivity(Intent(this, MainActivity::class.java))
+            finish()
+        }
+    }
+}