java - 动态和以编程方式创建布局

Question

我正在尝试以编程方式创建一个布局，其中有一个带有两个按钮的 ImageView。现在 ImageView 将位于中心，而按钮将位于布局的底部。但我做不到。这是我的代码

public class StackView extends RelativeLayout {

    ....................

    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
    params.addRule(RelativeLayout.CENTER_IN_PARENT);
    RelativeLayout.LayoutParams params1 = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    params1.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM|Gravity.LEFT);
    RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    params2.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM|Gravity.RIGHT);


    addView(imageview, 0, params);
    Button button=new Button(context);
    button.setText("left");
    button.setGravity(Gravity.START);
    addView(button, 1, params1);
    Button button1=new Button(context);
    button1.setText("right");
    button.setGravity(Gravity.END);
    addView(button1, 2,params2);
}

Answer 1

我得到了答案。这是我的做法。

            Button button=new Button(context);
            RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
            params.addRule(RelativeLayout.CENTER_IN_PARENT);
            RelativeLayout.LayoutParams params1 = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
            params1.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
            params1.addRule(BELOW,card.getId());
            RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
            params2.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
           // params2.addRule(BELOW,card.getId());
            params2.addRule(ALIGN_PARENT_RIGHT,button.getId());

            addView(imageview, 0, params);

            button.setText("left");
            button.setGravity(Gravity.START);
            addView(button, 1, params1);
            Button button1=new Button(context);
            button1.setText("right");
            //button.setGravity(Gravity.END);
            addView(button1, 2,params2);