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app/android/java/com/khronos/vulkan_samples/SecondActivity.java

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+package com.khronos.vulkan_samples;
+import androidx.appcompat.app.AppCompatActivity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+public class SecondActivity extends AppCompatActivity {
+    
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_second);
+        
+        TextView textView = findViewById(R.id.textViewSecond);
+        Button buttonBack = findViewById(R.id.buttonBack);
+        
+        // 接收从MainActivity传递的数据
+        Intent intent = getIntent();
+        if (intent != null && intent.hasExtra("message")) {
+            String message = intent.getStringExtra("message");
+            textView.setText(message);
+        }
+        
+        buttonBack.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                // 返回数据到MainActivity
+                Intent returnIntent = new Intent();
+                returnIntent.putExtra("returnData", "Hello back from SecondActivity!");
+                setResult(RESULT_OK, returnIntent);
+                
+                // 结束当前Activity
+                finish();
+            }
+        });
+    }
+}