Android将数据添加到自定义布局和scrollview

时间:2014-11-16 17:57:19

标签: android xml android-layout

在我的应用程序中,我有简单的布局,以填充任何具有类结构的数据。添加项目后,我想将此布局添加到滚动视图中。向scrollview添加布局是成功的但我无法将数据设置为自定义布局。例如,这是我设置数据的自定义布局:

tile.xml:

<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
    <LinearLayout
            android:orientation="vertical"
            android:layout_width="fill_parent"
            android:layout_height="50dp"
            android:background="@drawable/drop_shadow">
    </LinearLayout>
    <LinearLayout
            android:orientation="horizontal"
            android:layout_width="fill_parent"
            android:layout_height="30dp" android:minHeight="100dp" android:background="#eee">
        <TextView
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:text="New Text"
                android:id="@+id/username"/>
    </LinearLayout>
</LinearLayout>

班级数据结构:

public class SubjectStructure {
    public String    username;
    public String    topic;
    public String    description;
    public String    avatar;
    public String    sender;
    public Integer   grade;
    public Integer   type;
    public String    date;
}

现在我想填充tile.xml并将其添加到下面的布局中:

fragment_home.xml:

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="#F1F1F1">
    <LinearLayout android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:orientation="vertical"
                  android:id="@+id/scrollView1">
    </LinearLayout>
</ScrollView>

我的代码是这样的:     public View onCreateView(LayoutInflater inflater,ViewGroup容器,             Bundle savedInstanceState){

    View rootView = inflater.inflate( R.layout.fragment_home, container, false);
    scrollView = (LinearLayout) rootView.findViewById ( R.id.scrollView1 );

    for(SubjectStructure SS: G.subject_items){
        LinearLayout newLL = new LinearLayout( G.context );
        TextView newTV = new TextView( G.context );
        newTV.setText ( SS.topic );
        newLL.addView(newTV);

        LayoutInflater in =  (LayoutInflater) G.context.getSystemService(G.context.LAYOUT_INFLATER_SERVICE);
        View view = inflater.inflate(R.layout.tile, null);
        scrollView.addView(view);
    }
    return rootView;
}

在此代码中,我可以将tile.xml添加到fragment_home.xml。但是我无法将文本SS.topic设置为tile.xmlSS.topic不为空且有数据。如何解决这个问题?

2 个答案:

答案 0 :(得分:1)

你肯定缺少的是

 scrollView.addView(newLL); 

每次迭代。约

LayoutInflater in =  (LayoutInflater) G.context.getSystemService(G.context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.tile, null);
 scrollView.addView(view);

我不确定它的目的。您在每次迭代时创建tile的新实例,但您对其内容不执行任何操作。在次要方面,您已经有了LayoutInflater。您不需要在每次迭代时向系统请求一个,使用您获得的那个作为参数。

答案 1 :(得分:0)

按如下方式更改代码:

for(SubjectStructure SS: G.subject_items){
    LayoutInflater in =  (LayoutInflater) G.context.getSystemService(G.context.LAYOUT_INFLATER_SERVICE);
    View view = inflater.inflate(R.layout.tile, null);

    TextView textUserName=(TextView) view.findViewById(R.id.username);
    textUserName.setText(SS.topic);

    scrollView.addView(view);
}
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