ADD file via upload

main/java/com/example/musicwork/chuangguan/ChooseLevel.java

@@ -0,0 +1,46 @@
+package com.example.musicwork.chuangguan;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.example.musicwork.R;
+
+public class ChooseLevel extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_choose_level);
+        Button button_toTeach = (Button) findViewById(R.id.button_toTeach);
+        button_toTeach.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(ChooseLevel.this, Teach.class);
+                //启动
+                startActivity(intent);
+
+                Log.i("TEST", "button onClick");
+            }
+        });
+
+        Button button_toGameActivity = (Button) findViewById(R.id.button_toGameActivity);
+        button_toGameActivity.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(ChooseLevel.this, GameActivity.class);
+                //启动
+                startActivity(intent);
+
+                Log.i("TEST", "button onClick");
+            }
+
+        });
+
+    }
+
+}