我想向LinearLayout
添加ScrollView
,其中LinearLayout
的孩子是一群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,由于可能有多套GridLayout
,因此需要ScrollView
。问题是,ScrollView
仅滚动2行网格。这两行是在一组MainRows中,如果这是有道理的。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);
}
}
如果问题不够明确,请告诉我。我将不胜感激任何帮助。 谢谢!
答案 0 :(得分:1)
如果我理解正确,你会遇到问题,因为GridView本身就有一个滚动视图。因此,将GridView放在ScrollView中实际上会使SrollView的目的无效,因为GridView的滚动行为胜过。看看这个问题和答案,因为它解决了这个问题。 How to put GridView inside ScrollView
答案 1 :(得分:1)
我不明白为什么你只能使用网格布局。为什么不这样做,只要确保framelayout的宽度是screenWidth / 4。
<scrollview>
<linearlayout> // vertical
for i < categories {
<linerlayout> // horizontal
for j < videos {
<framelayout>
// the content you want to show
</framelayout>
}
</linearlayout>
}
</linearlayout>
</scrollview>