android学习——实现两个activity之间的跳转

public class FirstActivity extends AppCompatActivity {
    //声明一个button按钮（不需要和实际按钮同名）
    Button bt1;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_first);
        //创建监听器
        bt1 = (Button) findViewById(R.id.button1);
        bt1.setOnClickListener(listener);
    }
    //实现监听器(需要导入android.view.View和android.content.Intent)
    Button.OnClickListener listener = new Button.OnClickListener() {
        public void onClick(View v) {
            Intent intent = new Intent(FirstActivity.this,SecondActivity.class);
            startActivity(intent);
            FirstActivity.this.finish();
        }
    };
}