【发布时间】:2013-02-11 03:28:26
【问题描述】:
我想在ScrollView 中添加一个LinearLayout,其中LinearLayout 的孩子是一堆GridLayouts,包含4 列。 GridLayout 中的项目是从代码中动态填充的。 GridLayout 可以有 2 行或 1 行,具体取决于 MainRows 类中设置的内容数量。
现在,由于GridLayout 可以有很多组,所以需要ScrollView。问题是,ScrollView 只能滚动 2 行网格。如果有意义的话,这 2 行位于一组 MainRows 中。我想滚动布局中包含的所有网格。
这是我的 activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="@+id/parent">
<TextView
android:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="@string/topEight"
android:layout_marginTop="5dp">
</TextView>
</LinearLayout>
</ScrollView>
single_video_grid.xml:
<?xml version="1.0" encoding="utf-8"?>
<GridView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/gridview0"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:layout_marginTop="8dp"
android:numColumns="4">
</GridView>
从代码中我动态添加和设置这样的视图:
ArrayList<MainRows> rows = JSONVideoDataHandler.getRowElements();
for (MainRows row : rows) {
LinearLayout parentLayout = (LinearLayout) findViewById(R.id.parent);
if(row instanceof Ads){
// TODO implement ads layout
}else{
int numberOfItems = row.getNumberOfItems();
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if(numberOfItems > 4){
GridView gridview = (GridView) inflater.inflate(R.layout.single_video_grid, null);
// if number of vids exceeds 4, 2 rows are required.
// therefore setting 8 imageplaceholders.
gridview.setAdapter(new ImageAdapter(this, row, 8));
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
Toast.makeText(activity, "haha " + position,
Toast.LENGTH_SHORT).show();
}
});
parentLayout.addView(gridview);
}else{
GridView gridview = (GridView) inflater.inflate(R.layout.single_video_grid, null);
// if number of vids does not exceed 4, 1 row is required.
// therefore setting 4 imageplaceholders.
gridview.setAdapter(new ImageAdapter(this, row, 4));
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
Toast.makeText(activity, "haha " + position,
Toast.LENGTH_SHORT).show();
}
});
// linearLayout = (LinearLayout) findViewById(R.id.parent);
parentLayout.addView(gridview);
}
}
如果问题不够清楚,请告诉我。我将不胜感激任何帮助。 谢谢!
【问题讨论】:
标签: android android-linearlayout android-xml android-scrollview android-gridlayout