package com.hdl.hdlelianzigbee; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent; import android.os.Bundle; import android.view.View; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); findViewById(R.id.btn_go).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { startActivity(ElianActivity.class); } }); } public void startActivity(Class clazz) { Intent intent = new Intent(this, clazz); startActivity(intent); // overridePendingTransition(R.anim.slide_bottom_in, R.anim.slide_bottom_out); } }