0
if (mLayoutManager instanceof GridLayoutManager) {
((GridLayoutManager) mLayoutManager).setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
@Override
public int getSpanSize(int position) {
return listResultAdapter.isHeaderOrFooter(position) ? ((GridLayoutManager) mLayoutManager).getSpanCount() : 1;
}
});
}
上面的代码是崩溃说java.lang.ClassCastException:android.support.v7.widget.LinearLayoutManager不能转换到android.support.v7.widget.GridLayoutManager无法投LinearLayoutManager到GridLayoutManager
我想通了以下行导致崩溃
((GridLayoutManager) mLayoutManager).getSpanCount()
什么方法可以解决,以避免碰撞
mLayoutManager被声明为LinearLayoutManager
顺便说一句,你为什么声明''mLayoutManager作为''LinearLayoutManager但是用它作为''GridLayoutManager? – shhp
这怎么可能? – apk
其实我试过这样做,但它崩溃时,我打电话notifydataset更改我尝试使用gridlayoutmanager setspancount – apk