在java代码中设置RelativeLayout

Question

我很难在我的java代码中让两个文本视图相互叠加.这是我正在尝试的代码:

/** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);

        layout = new RelativeLayout(this);
        text1 = new TextView(this);
        text1.setText("1");
        text2 = new TextView(this);
        text2.setText("2");

        RelativeLayout.LayoutParams p = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
        RelativeLayout.LayoutParams q = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);

        q.addRule(RelativeLayout.BELOW, layout.getId());
        text1.setLayoutParams(q);
        layout.addView(text1);


        p.addRule(RelativeLayout.BELOW,text1.getId());
        text2.setLayoutParams(p);
        layout.addView(text2);

        setContentView(layout);
    }

这将两个文本视图堆叠在同一行,但我希望TextView text2出现在TextView text1下面,所以在我的应用程序中,我希望以下内容显示为输出:

1
2

我用"addRule"方法尝试了各种各样的东西,我不知道为什么这不起作用.我想知道如何在没有XML的情况下执行此操作,因为我计划构建一个方法库,可以构建一个可以通过编辑数组轻松调整的布局.

Answer 1

你TextViews没有id(默认情况下id是-1)...在初始化之后把它放进去:

text1.setId(1111); // 1111 is just an example,
text2.setId(2222); // just make sure the id are unique