如何从底部打开对话框，但在android中它将仅显示在从底部开始的半个屏幕之间

public class BottomDialogFragment extends DialogFragment {

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        // 设置对话框内容
        builder.setMessage("这是一个底部对话框");
        // 设置对话框按钮
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                // 点击确定按钮的逻辑处理
            }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                // 点击取消按钮的逻辑处理
            }
        });
        return builder.create();
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setStyle(DialogFragment.STYLE_NO_FRAME, R.style.BottomDialog);
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        Dialog dialog = getDialog();
        if (dialog != null) {
            Window window = dialog.getWindow();
            if (window != null) {
                // 设置对话框显示在底部
                window.setGravity(Gravity.BOTTOM);
                // 设置对话框高度为屏幕的一半
                WindowManager.LayoutParams params = window.getAttributes();
                params.height = WindowManager.LayoutParams.WRAP_CONTENT;
                params.width = WindowManager.LayoutParams.MATCH_PARENT;
                window.setAttributes(params);
            }
        }
    }
}

BottomDialogFragment dialogFragment = new BottomDialogFragment();
dialogFragment.show(getSupportFragmentManager(), "bottom_dialog");