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GridView重复调用getView有关问题
使用GridView控件，却发现getView被重复调用，次数多达上百次，拖垮了系统，影响用户体验！ public View getView(int position, View convertView, ViewGroup parent)
{
Log.v(Tag, "<getView> position = " + position);
...
return convertView;
}
log信息：
10-12 10:43:09.880: V/GridViewAdapter(30785): <getView> position = 0 10-12 10:43:09.890: V/GridViewAdapter(30785): <getView> position = 0 10-12 10:43:09.890: V/GridViewAdapter(30785): <getView> position = 0 10-12 10:43:09.900: V/GridViewAdapter(30785): <getView> position = 0 10-12 10:43:09.910: V/GridViewAdapter(30785): <getView> position = 0
其中只有以下五条信息是正常的，其它都是多余。
10-12 10:43:10.160: V/GridViewAdapter(30785): <getView> position = 0 10-12 10:43:10.160: V/GridViewAdapter(30785): <getView> position = 1 10-12 10:43:10.170: V/GridViewAdapter(30785): <getView> position = 2 10-12 10:43:10.200: V/GridViewAdapter(30785): <getView> position = 3 10-12 10:43:10.220: V/GridViewAdapter(30785): <getView> position = 4
参考了网上很多的修改的方法，比如布局中高度属性wrap_content设为固定值或者fill_parent等，但都未起作用。也许遇到问题太特殊，只能自己想办法了！
虽然没有办法阻止系统重复调用getView，但是我们有办法让多余的getView什么都不做。如此这般就可以减轻系统负担，增加用户体验。
增加一个变量mCount来记录position = 0的次数，依据mCount的值来决定执行流程。
public View getView(int position, View convertView, ViewGroup parent)
{
Log.v(Tag, "<getView> position = " + position + " mCount = " + mCount);
if (position == 0)
{
mCount++;
}
else
{
mCount = 0;
}
if (mCount > 1)
{
Log.v(Tag, "<getView> drop !!!");
return convertView;
}
...
return convertView;
}
log信息
10-12 12:57:32.436: V/GridViewAdapter(32222): <getView> position = 0 mCount = 0 10-12 12:57:32.436: V/GridViewAdapter(32222): <getView> position = 0 mCount = 1 10-12 12:57:32.436: V/GridViewAdapter(32222): <getView> drop !!! 10-12 12:57:32.446: V/GridViewAdapter(32222): <getView> position = 0 mCount = 2 10-12 12:57:32.456: V/GridViewAdapter(32222): <getView> drop !!! 10-12 12:57:32.456: V/GridViewAdapter(32222): <getView> position = 0 mCount = 3 10-12 12:57:32.456: V/GridViewAdapter(32222): <getView> drop !!! 10-12 12:57:32.466: V/GridViewAdapter(32222): <getView> position = 0 mCount = 4 10-12 12:57:32.466: V/GridViewAdapter(32222): <getView> drop !!!
最后更新：2017-04-04 07:03:27