在android中重新安排计时器

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.os.Handler;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private Handler handler = new Handler();
    private Runnable runnable = new Runnable() {
        @Override
        public void run() {
            // 在这里执行你的计时器任务
            updateTimer();
            // 重新安排计时器
            handler.postDelayed(this, 1000);
        }
    };

    private int seconds = 0;
    private TextView timerTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        timerTextView = findViewById(R.id.timerTextView);

        // 启动计时器
        handler.postDelayed(runnable, 1000);
    }

    private void updateTimer() {
        seconds++;
        timerTextView.setText("计时器: " + seconds + " 秒");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        // 在Activity销毁时，停止计时器
        handler.removeCallbacks(runnable);
    }
}