Android RelativeLayout添加规则不起作用

伙计们，我有一个cardview，我想用rule在上面添加2个按钮，但是addRule（）方法不起作用。在图中，图A正在出现，但我想让图B，我的意思是，我想把按钮设置为右对齐，底部对齐，第二个按钮与第一个相邻。当我运行它时，计算一个正在发生的事件。有什么建议吗

试试这个：-

 RelativeLayout mainLayout = (RelativeLayout) findViewById(R.id.mainLayout);

        CardView cardView = new CardView(this);
        ViewGroup.LayoutParams cardParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        cardView.setLayoutParams(cardParams);
        mainLayout.addView(cardView);

        RelativeLayout relativeLayout = new RelativeLayout(this);
        ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        relativeLayout.setLayoutParams(layoutParams);
        cardView.addView(relativeLayout);

        LinearLayout linearLayout = new LinearLayout(this);
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        linearLayout.setLayoutParams(params);
        linearLayout.setOrientation(LinearLayout.HORIZONTAL);
        linearLayout.setGravity(Gravity.RIGHT);
        relativeLayout.addView(linearLayout);

        Button removeButton = new Button(this);
        Button modifyButton = new Button(this);

        removeButton.setText("Remove");
        modifyButton.setText("Modify");

        linearLayout.addView(removeButton);
        linearLayout.addView(modifyButton);

---

您是否将这些按钮添加到实际的RelativeLayout？如果您只是将它们添加到支持库中的CardView小部件中，但由于CardView不是RelativeLayout.LayoutParams指的是直接父项，因此无法工作，则您是在CardView中添加按钮。如果可能的话，使用xml，您可以在带有水平方向的线性布局中包含按钮。我正在制作卡片程序。请更新我的代码。以编程方式制作cardview。试试这个。

 RelativeLayout mainLayout = (RelativeLayout) findViewById(R.id.mainLayout);

        CardView cardView = new CardView(this);
        ViewGroup.LayoutParams cardParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        cardView.setLayoutParams(cardParams);
        mainLayout.addView(cardView);

        RelativeLayout relativeLayout = new RelativeLayout(this);
        ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        relativeLayout.setLayoutParams(layoutParams);
        cardView.addView(relativeLayout);

        LinearLayout linearLayout = new LinearLayout(this);
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        linearLayout.setLayoutParams(params);
        linearLayout.setOrientation(LinearLayout.HORIZONTAL);
        linearLayout.setGravity(Gravity.RIGHT);
        relativeLayout.addView(linearLayout);

        Button removeButton = new Button(this);
        Button modifyButton = new Button(this);

        removeButton.setText("Remove");
        modifyButton.setText("Modify");

        linearLayout.addView(removeButton);
        linearLayout.addView(modifyButton);