android - RelativeLayout 与 ImageView 和 TextView - 在 ImageView 下方对齐 TextView，两者都以编程方式居中于 RelativeLayout

Question

我有一个带有 ImageView 和 TextView 的 RelativeLayout。我想要 TextView 位于 ImageView 正下方(带有小填充)以及 ImageView 和 TextView，并在 RelativeLayout 中对齐到中心。

RelativeLayout 以编程方式添加

我已经阅读了一些关于对齐的问题，但是，我无法让它们为我工作。下面是我当前的代码...

RelativeLayout 代码

RelativeLayout relativeLayout = new RelativeLayout(this);

ImageView 代码

        ImageView image = new ImageView(this);  
        RelativeLayout.LayoutParams lpImage = new RelativeLayout.LayoutParams(
                RelativeLayout.LayoutParams.WRAP_CONTENT,
                RelativeLayout.LayoutParams.WRAP_CONTENT);

        lpImage.addRule(RelativeLayout.CENTER_IN_PARENT);

        //Setting the parameters on the Image
        image.setLayoutParams(lpImage);

        //adding imageview to relative layout
        relativeLayout.addView(image);

TextView 代码

TextView textview = new TextView(this);
RelativeLayout.LayoutParams lpTextView = new RelativeLayout.LayoutParams(
                    RelativeLayout.LayoutParams.WRAP_CONTENT,
                    RelativeLayout.LayoutParams.WRAP_CONTENT);
            lpTextView.addRule(RelativeLayout.BELOW, image.getId());

            //Setting the parameters on the TextView
            textview.setLayoutParams(lpTextView);

            //Adding TextView to relative layout
            relativeLayout.addView(textview);

如果我为图像和文本设置 RelativeLayout.CENTER_IN_PARENT，它们会相互重叠，这是可以理解的，因为 RelativeLayout 支持 View 重叠。

我认为为 textview 设置 RelativeLayout.BELOW 会使它在图像下方对齐，但事实并非如此。我什至为 textview 尝试了 RelativeLayout.ALIGN_BOTTOM，但即使那样也没有用。

Answer 1

试试这个..

RelativeLayout relativeLayout = new RelativeLayout(this);

RelativeLayout.LayoutParams lprela = new RelativeLayout.LayoutParams(
            RelativeLayout.LayoutParams.MATCH_PARENT,
            RelativeLayout.LayoutParams.MATCH_PARENT);
relativeLayout.setLayoutParams(lprela);

ImageView image = new ImageView(this);  
    RelativeLayout.LayoutParams lpImage = new RelativeLayout.LayoutParams(
            RelativeLayout.LayoutParams.WRAP_CONTENT,
            RelativeLayout.LayoutParams.WRAP_CONTENT);

    lpImage.addRule(RelativeLayout.ALIGN_PARENT_TOP);

    //Setting the parameters on the Image
    image.setLayoutParams(lpImage);

    //adding imageview to relative layout
    relativeLayout.addView(image);

    TextView textview = new TextView(this);
    RelativeLayout.LayoutParams lpTextView = new RelativeLayout.LayoutParams(
                RelativeLayout.LayoutParams.WRAP_CONTENT,
                RelativeLayout.LayoutParams.WRAP_CONTENT);
        lpTextView.addRule(RelativeLayout.BELOW, image.getId());

        //Setting the parameters on the TextView
        textview.setLayoutParams(lpTextView);

        //Adding TextView to relative layout
        relativeLayout.addView(textview);

或者

LinearLayout linearLayout = new LinearLayout(this);
LinearLayout.LayoutParams lp_ineer_ver = new LinearLayout.LayoutParams(
              LinearLayout.LayoutParams.MATCH_PARENT, 
              LinearLayout.LayoutParams.MATCH_PARENT);
linearLayout.setGravity(Gravity.CENTER);
linearLayout.setOrientation(LinearLayout.VERTICAL);
linearLayout.setLayoutParams(lp_ineer_ver);

ImageView image = new ImageView(this);  
        LinearLayout.LayoutParams lpImage = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);

        //Setting the parameters on the Image
        image.setLayoutParams(lpImage);

        //adding imageview to relative layout
        linearLayout.addView(image);

TextView textview = new TextView(this);
LinearLayout.LayoutParams lpTextView = new LinearLayout.LayoutParams(
                    LinearLayout.LayoutParams.WRAP_CONTENT,
                    LinearLayout.LayoutParams.WRAP_CONTENT);

            //Setting the parameters on the TextView
            textview.setLayoutParams(lpTextView);

            //Adding TextView to relative layout
            linearLayout.addView(textview);