相对布局以编程方式将 View 添加到一个 View 中,而另一个 View 未正确对齐

2019年12月27日 21点热度 0条评论

我正在尝试以编程方式将文本视图添加到相对布局父视图中。但是,第一个视图未正确对齐,而其余视图已正确对齐。见所附图片。

我的代码:

private void setupQuestionChoices(int position) {
    question.setText(questionList.get(position).question());
    choicesTextViewsList.clear();

    for (int i = 0; i < questionList.get(position).choices().size(); i++) {

        TextView textView = new TextView(getActivity());

        textView.setBackgroundResource(R.drawable.qa_button_background);
        textView.setMinWidth(300);
        textView.setGravity(Gravity.CENTER);

        textView.setText(questionList.get(position).choices().get(i));
        textView.setId(i);

        RelativeLayout.LayoutParams layoutParams =
                new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);

        if (i == 0) {
            layoutParams.addRule(RelativeLayout.BELOW, question.getId());
        } else {
            layoutParams.addRule(RelativeLayout.BELOW, choicesTextViewsList.get(i - 1).getId());
        }
        layoutParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
        layoutParams.setMargins(20, 20, 20, 20);
        relativeLayout.addView(textView, layoutParams);

        choicesTextViewsList.add(textView);

        choicesTextViewsList.get(i).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                answerSelected = true;
            }
        });

    }
}

我将视图添加到的相对布局xml:

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true">

    <RelativeLayout
        android:id="@+id/relative_parent" //here is where I add views to
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <TextView
            android:id="@+id/question"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="20dp"
            android:layout_marginTop="40dp"
            android:layout_marginEnd="20dp"
            android:layout_marginBottom="10dp"
            android:orientation="horizontal"
            android:textColor="@color/colorPrimary"
            android:textSize="30sp"
            android:textStyle="bold" />

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_gravity="center"
            android:layout_marginBottom="30dp"
            android:gravity="center">

            <androidx.appcompat.widget.AppCompatButton
                android:id="@+id/button_back"
                style="?android:attr/borderlessButtonStyle"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentStart="true"
                android:layout_alignParentTop="true"
                android:layout_marginStart="30dp"
                android:layout_marginTop="10dp"
                android:layout_marginEnd="30dp"
                android:background="@drawable/rectangle_border"
                android:text="Back"
                android:textColor="@android:color/darker_gray" />

            <androidx.appcompat.widget.AppCompatButton
                android:id="@+id/button_next"
                style="?android:attr/borderlessButtonStyle"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentTop="true"
                android:layout_alignParentEnd="true"
                android:layout_marginStart="30dp"
                android:layout_marginTop="10dp"
                android:layout_marginEnd="30dp"
                android:background="@drawable/rectangle_border"
                android:text="Next"
                android:textColor="@android:color/darker_gray" />
        </RelativeLayout>
    </RelativeLayout>
</ScrollView>

我阅读了一些与此问题相关的帖子,并按照他们的指导进行了操作,但这无济于事。

How to lay out Views in RelativeLayout programmatically?

Create a new TextView programmatically then display it below another TextView

解决方案如下:

我正在使用for循环的索引作为textView的ID,我对其进行了更改,以使Android为其生成ID,如下所示,现在它可以正常工作了。

我换了线

textView.setId(i)

textView.setId(ViewGroup.generateViewId())

谢谢。