android - 如何设置 AlertDialog 自定义标题上边距并删除不需要的 Padding？

Question

我遇到了 AlertDialog.Builder 标题的 margin 和 padding 问题，我正在做的是我想要标题在 center 中，所以我正在使用 setCustomTitle 我能够这样做，但坚持使用边距和填充。我不想显示不需要的填充，我还想为标题设置一些顶部边距，我正在使用 LinearLayout.LayoutParams 但它没有效果。请建议如何处理它。谢谢

代码:

dialog = new AlertDialog.Builder(context, R.style.DialogTheme);
TextView title = new TextView(context);
title.setTextColor(ContextCompat.getColor(context, R.color.black));
title.setTextSize(TypedValue.COMPLEX_UNIT_SP, 20);
title.setTypeface(Typeface.DEFAULT_BOLD);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
lp.setMargins(0, 20, 0, 0);
title.setLayoutParams(lp);
title.setText("Dialog");
title.setGravity(Gravity.CENTER);
dialog.setCustomTitle(title);
dialog.setMessage("Dialog box with custom title view ");
dialog.setCancelable(false);
dialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {

    }
});
dialog.show();

结果:

Answer 1

AlertDialog.Builder dialog = new AlertDialog.Builder(this);
TextView title = new TextView(this);
title.setTextColor(ContextCompat.getColor(this, android.R.color.black));
title.setTextSize(TypedValue.COMPLEX_UNIT_SP, 20);
title.setTypeface(Typeface.DEFAULT_BOLD);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
lp.setMargins(0, 20, 0, 0);
title.setPadding(0,30,0,0);
title.setLayoutParams(lp);
title.setText("Dialog");
title.setGravity(Gravity.CENTER);
dialog.setCustomTitle(title);
dialog.setMessage("Dialog box with custom title view ");
dialog.setCancelable(false);
dialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {

    }
});
dialog.show();

替换这段代码就可以了