如何在XWalkView中添加进度

public class CustomXWalkResourceClient extends XWalkResourceClient {
    public CustomXWalkResourceClient(XWalkView view) {
        super(view);
    }

    @Override
    public void onProgressChanged(XWalkView view, int progressInPercent) {
        // 进度发生变化时的操作
        super.onProgressChanged(view, progressInPercent);
    }
}

XWalkView xWalkView = findViewById(R.id.xwalkview);
CustomXWalkResourceClient resourceClient = new CustomXWalkResourceClient(xWalkView);
xWalkView.setResourceClient(resourceClient);

@Override
public void onProgressChanged(XWalkView view, int progressInPercent) {
    if (progressInPercent == 100) {
        // 加载完成
    } else {
        // 更新进度条
    }
}