如何以编程方式为 customAlertDialog 修改 LinearLayout 的高度和宽度？答案

【问题标题】：How to modify the height and width of a LinearLayout programmatically for a customAlertDialog?如何以编程方式为 customAlertDialog 修改 LinearLayout 的高度和宽度？
【发布时间】：2019-12-09 07:24:22
【问题描述】：

我想制作一个 customAlertDialog 以显示标题、消息和按钮居中，但我无法使 customAlertDialog 的标题和消息的大小与父级的大小相同

这就是我的customAlertDialog 目前的样子1

LinearLayout layout = new LinearLayout(context);
            layout.setOrientation(LinearLayout.VERTICAL);
            layout.setBackgroundColor(Color.RED);
            layout.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
            final TextView header = new TextView(context);
            final TextView body = new TextView(context);
            final SpannableString formatHeader = new SpannableString(title);
            final StyleSpan negrita = new StyleSpan(android.graphics.Typeface.BOLD);
            formatHeader.setSpan(negrita,0, title.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);

            header.setText(formatHeader);
            header.setGravity(Gravity.CENTER);
            header.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 20);
            header.setTextColor(Color.BLACK);
            body.setPadding(8, 0, 8, 10);

            body.setText(message);
            body.setGravity(Gravity.CENTER);
            body.setPadding(8, 0, 8, 0);
            body.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 18);
            body.setTextColor(Color.BLACK);

            layout.addView(header);
            layout.addView(body);
            view = layout;
            break;

【问题讨论】：

标签： java android resize android-alertdialog android-linearlayout

【解决方案1】：

您可以更改Dialog 的默认LayoutParams 以使您的对话框像这样全屏显示：

Window window = yourDialog.getWindow();
if (window != null) {
  WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
  lp.copyFrom(window.getAttributes());
  //This makes the dialog take up the full width
  lp.width = WindowManager.LayoutParams.MATCH_PARENT;
  lp.height = WindowManager.LayoutParams.MATCH_PARENT;
  window.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
  window.setAttributes(lp);
}

【讨论】：