[英]How do I make a linear layout appear in a gridview?
這是代碼。
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:id="@+id/grid_cell_color"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#80A9A9A9"
android:orientation="vertical" >
</LinearLayout>
<ImageView
android:id="@+id/imageView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/grid_cell_border" />
<RelativeLayout
android:id="@+id/grid_cell_background"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</RelativeLayout>
</FrameLayout>
適配器代碼為:
@Override
public int getCount() {
return titles.length;
}
@Override
public Object getItem(int position) {
return titles[position];
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View row, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) view.getContext().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.grid_view_single_cell, parent, false);
LinearLayout gridCell1= (LinearLayout) row.findViewById(R.id.grid_cell_color);
if(position == 0 || position == 1 || position == 5){
gridCell1.setVisibility(View.GONE);
Log.i("GRID", "ENTERED");
}
RelativeLayout gridCell = (RelativeLayout) row.findViewById(R.id.grid_cell_background);
gridCell.setBackgroundResource(titles[position]);
return row;
}
}
我想在某些單元格中放置一個灰色的線性布局。 但是它沒有出現。 我該怎么做? 我的參考文獻似乎正確,但是灰色布局仍然沒有顯示。
原因是ListView的項目將被重用。
此代碼后:
if(position == 0 || position == 1 || position == 5){
gridCell1.setVisibility(View.GONE);
Log.i("GRID", "ENTERED");
}
您應該添加else子句:
else{
gridCell1.setVisibility(View.VISIBLE);
}
可能還有另一個原因:將Linearlayout的高度更改為1dp。
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