No animation on android studio, the text wrap

public class HiddenUtils {
    private View hideView, clickView, down;//需要展开隐藏的布局，开关控件,控件样式改变

    public static HiddenUtils newInstance(Context context, View hideView, View clickView, ImageView down) {
        clickView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (View.VISIBLE == hideView.getVisibility()) {
                    hideView.setVisibility(View.GONE);
                    down.setImageResource(R.drawable.svg_bottom_c126);
                } else {
                    hideView.setVisibility(View.VISIBLE);
                    down.setImageResource(R.drawable.svg_top_c126);
                }
            }
        });
        return new HiddenUtils(context, hideView, clickView, down);
    }

    private HiddenUtils(Context context, View hideView, View clickView, View down) {
        this.hideView = hideView;
        this.down = down;
        this.clickView = clickView;
    }
}