package com.example.musicwork; 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.chuangguan.ChooseLevel; import com.example.musicwork.chuangguan.Teach; import com.example.musicwork.freeModel.InitActivity; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Intent intent1 = getIntent(); final String username = intent1.getStringExtra("username"); Button button_toFree = (Button) findViewById(R.id.button_toFree); button_toFree.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(MainActivity.this, InitActivity.class);//进入自由模式 //启动 startActivity(intent); } }); Button button_toChooseLevel = (Button) findViewById(R.id.button_toChooseLevel); button_toChooseLevel.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(MainActivity.this, ChooseLevel.class); //启动 startActivity(intent); Log.i("TAG", "choose_level_button onClick"); } }); } }