Android:在嵌套布局中动态添加视图

Question

我有一个具有以下结构的abc.xml.

<ScrollView
  android:layout_width="match_parent"
  android:layout_height="match_parent">
 <RelativeView
   android:layout_width="match_parent"
   android:layout_height="wrap_content">
  <LinearLayout
    android:id="@+id/linear"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    >
  </LinearLayout>
 </RelativeLayout>
</ScrollView>

我想动态地将textviews添加到线性布局.以下是我的代码.我没有得到任何错误,但我没有得到预期的结果.

LayoutInflater Inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View view = Inflater.inflate(R.layout.abc, null);

LinearLayout layout = (LinearLayout) view.findViewById(R.id.linear);

        TextView Tag = new TextView(getActivity());
        Tag.setText("textString");
        Tag.setBackgroundResource(R.color.bg_color);
        Tag.setTextAppearance(getActivity(), R.style.SmallFont);
        layout.addView(Tag);

Answer 1

你的xml应该是

<ScrollView
  android:layout_width="match_parent"
  android:layout_height="match_parent">
 <LinearLayout
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:orientation="vertical">
  <LinearLayout
    android:id="@+id/linear"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    >
  </LinearLayout>
 </LinearLayout>
</ScrollView>

和添加文本视图的java代码是

LinearLayout layout = (LinearLayout) view.findViewById(R.id.linear);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
    LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
TextView Tag = new TextView(getActivity());
tag.setLayoutParams(params);
Tag.setText("textString");
Tag.setBackgroundResource(R.color.bg_color);
Tag.setTextAppearance(getActivity(), R.style.SmallFont);
layout.addView(Tag);