以编程方式在另一个内部添加Layout

Question

我有一个包含ImageView和TextView的xml文件(option_element.xml)

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="-18dp" >

    <ImageView
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:src="@drawable/option_button" />

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/button"
        android:layout_alignLeft="@+id/button"
        android:layout_alignRight="@+id/button"
        android:layout_alignTop="@+id/button"
        android:layout_centerHorizontal="true"
        android:gravity="center" />

</RelativeLayout>

我应该根据数组的内容用此视图填充LinearLayout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

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

    <!-- other layout elements -->

</LinearLayout>

我正在添加它

LinearLayout options_layout = (LinearLayout) findViewById(R.id.options_list);
String[] options = getActivity().getResources().getStringArray(R.array.options);
for (int i = 0; i < options.length; i++) {
    View to_add = inflater.inflate(R.layout.options_element,
                options_layout);

    TextView text = (TextView) to_add.findViewById(R.id.text);
    text.setText(options[i]);
    text.setTypeface(FontSelector.getBold(getActivity()));

}

但出了点问题.我期待options.length ImageView与相对TextView填充选项[i]文本,但我获得options.length ImageView,但只有第一个有文本(和文本它不是选项[0]元素,但最后一个).

例如,如果选项在第一个imageView中包含{"one","two","three"},则获得"three",其他为空.如何将每个字符串放在每个TextView中？

Answer 1

该inflate(int resource, ViewGroup root)方法的返回root,如果root不为空,这样to_add.findViewById()等于options_layout.findViewById()它总是在第一位置返回意见.更改如下应该有所帮助:

LinearLayout options_layout = (LinearLayout) findViewById(R.id.options_list);
String[] options = getActivity().getResources().getStringArray(R.array.options);
for (int i = 0; i < options.length; i++) {
    View to_add = inflater.inflate(R.layout.options_element,
                options_layout);

    TextView text = (TextView) to_add.findViewById(R.id.text);
    text.setText(options[i]);
    text.setTypeface(FontSelector.getBold(getActivity()));

}

至:

LinearLayout options_layout = (LinearLayout) findViewById(R.id.options_list);
String[] options = getActivity().getResources().getStringArray(R.array.options);
for (int i = 0; i < options.length; i++) {
    View to_add = inflater.inflate(R.layout.options_element,
                options_layout,false);

    TextView text = (TextView) to_add.findViewById(R.id.text);
    text.setText(options[i]);
    text.setTypeface(FontSelector.getBold(getActivity()));
    options_layout.addView(to_add);
}