如何在安卓系统中显示ToolTip？

import android.os.Bundle;
import android.view.View;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.widget.TooltipCompat;

public class MainActivity extends AppCompatActivity {

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

        View myButton = findViewById(R.id.my_button);
        TooltipCompat.setTooltipText(myButton, "这是一个按钮");
    }
}

View myButton = findViewById(R.id.my_button);
myButton.post(new Runnable() {
    @Override
    public void run() {
        TooltipCompat.setTooltipText(myButton, "这是一个按钮");
    }
});

TooltipCompat.setTooltipText(myButton, "这是一个按钮");
TooltipCompat.setAnchor(myButton, TooltipCompat.AnchorPosition.BOTTOM);