Question

我仅使用代码创建AlertDialog并插入复选框视图。但是检查的重力表现却很奇怪。

如何将text + box放在中间，或者至少将文本放在左侧，并以填充开头。

谢谢。

private void openFilterDialog() {
    final AlertDialog.Builder builder = new AlertDialog.Builder(Objects.requireNonNull(getContext()));
    builder.setTitle(getString(R.string.filter));

    // Set up the input
    final CheckBox hideNoResponseBox = new CheckBox(getContext());
    //Put the checkBox on the right side
    hideNoResponseBox.setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
    hideNoResponseBox.setText(R.string.hide_no_responses);
    hideNoResponseBox.setChecked(hideNoResponse);
    hideNoResponseBox.setWidth(WindowManager.LayoutParams.WRAP_CONTENT);
    hideNoResponseBox.setGravity(View.TEXT_ALIGNMENT_CENTER);

    builder.setView(hideNoResponseBox);

    // Set up the buttons
    builder.setPositiveButton(getString(R.string.do_filter), new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            if (Utils.isDoubleClick()) return;
            hideNoResponse = hideNoResponseBox.isChecked();

            showLoadingDialog(true);
            hideListItem(adapter.getDistanceArrayList());
            dialog.dismiss();
        }
    });
    builder.setNegativeButton(getString(R.string.str_cancel), new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.cancel();
        }
    });

    builder.show();
}

Answer 1

从setGravity()类继承的CheckBox的View方法采用Gravity常量作为值。

https://developer.android.com/reference/android/view/Gravity

编辑：

您可以尝试使用布局参数设置文本重力。 AlertDialog的LayoutParams是LinearLayout的LayoutParams，如下所示：What LayoutParams should be used in an AlertDialog?

您只需要使用LayoutParam的setGravity()方法。

关于填充，您可以尝试将CheckBox的父对象强制转换为ViewGroup并在其中设置填充，如下所示：

https://stackoverflow.com/a/38691663/1403997

Answer 2

private void openFilterDialog() {
    final AlertDialog.Builder builder = new AlertDialog.Builder(Objects.requireNonNull(getContext()));
    builder.setTitle(getString(R.string.filter));

    // Set up the input
    final CheckBox hideNoResponseBox = new CheckBox(getContext());
    //Put the checkBox on the right side
    hideNoResponseBox.setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
    hideNoResponseBox.setText(R.string.hide_no_responses);
    hideNoResponseBox.setChecked(hideNoResponse);
    hideNoResponseBox.setWidth(WindowManager.LayoutParams.WRAP_CONTENT);

    hideNoResponseBox.setGravity(Gravity.START | Gravity.CENTER_VERTICAL);
    hideNoResponseBox.setTextAlignment(View.TEXT_ALIGNMENT_TEXT_START);

    int px = Math.round(TypedValue.applyDimension(
            TypedValue.COMPLEX_UNIT_DIP, 16, getResources().getDisplayMetrics()));

    hideNoResponseBox.setPadding(px,0,0,0);

    builder.setView(hideNoResponseBox);


    // Set up the buttons
    builder.setPositiveButton(getString(R.string.do_filter), new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            if (Utils.isDoubleClick()) return;
            hideNoResponse = hideNoResponseBox.isChecked();

            showLoadingDialog(true);
            hideListItem(adapter.getDistanceArrayList());
            dialog.dismiss();
        }
    });
    builder.setNegativeButton(getString(R.string.str_cancel), new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.cancel();
        }
    });

    builder.show();
}

以编程方式AlertDialog上的复选框无法获得中心重力

2 个答案: