ADD file via upload

AboutMainActivity.java

@@ -0,0 +1,28 @@
+package page.com;
+
+import android.content.Intent;
+
+import androidx.appcompat.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+import cn.bmob.v3.Bmob;
+
+public class AboutMainActivity extends BaseActivity {
+    private Button cometo;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_about_main);
+        cometo=(Button)findViewById(R.id.cometo);
+        cometo.setOnClickListener((new View.OnClickListener(){
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(AboutMainActivity.this,main_page.class);
+                startActivity(intent);
+            }
+        }));
+    }
+
+}