我有一个应用程序可以访问REST服务,获取一些json,然后将其放入listview。我的主要活动扩展了Activity而不是ListActivity。我可以滚动列表项,但我不能选择任何(至少通过触摸)。我通过findViewBYId访问listview,并有一个扩展SimpleAdapter的适配器。我已将适配器的getVIew()内的convertView设置为可点击。但是当我这样做时,我再也无法点击listView中的列表项了?我做错了吗?
public class App extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
jobsListView = (ListView) findViewById(R.id.jobs_list);
jobsListView.setAdapter(new JobItemAdapter(jobsListView.getContext(),
jobsList,
R.layout.list_item,
new String[] {"title","location"},
new int[] {R.id.job_title, R.id.job_location}));
jobsListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
Log.i("jobsListView.setOnItemClickListener()"," item clicked: " + arg0.getSelectedItemPosition());
}
});
}
public class JobItemAdapter extends SimpleAdapter {
private List<HashMap<String,String>> jobsList;
public JobItemAdapter(Context context, List<HashMap<String,String>> jobs, int resource, String[] from, int[] to)
{
super(context, jobs, resource, from, to);
jobsList = jobs;
}
public View getView(int position, View convertView, ViewGroup parent){
Log.i(TAG," in JobItemAdapter getView() ");
if (convertView == null) {
//no previous views, inflate views
convertView = getLayoutInflater().inflate(R.layout.list_item, parent, false);
}
//update textviews in layout
TextView title = (TextView)convertView.findViewById(R.id.job_title);
title.setText(jobsList.get(position).get("title"));
TextView location = (TextView)convertView.findViewById(R.id.job_location);
location.setText(jobsList.get(position).get("location"));
//make the view clickable
convertView.setClickable(true);
return convertView;
}
}
}
答案 0 :(得分:2)
可能发生的事情是,您正在为R.layout.list_item定义的行定义背景颜色,并且背景颜色不是选择器中定义的颜色,例如:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" >
<shape android:shape="rectangle">
<solid
android:color="@color/blue_button_press"/>
</shape>
</item>
<item android:state_selected="true" >
<shape android:shape="rectangle">
<solid
android:color="@color/blue_button_focus" />
</shape>
</item>
<item android:state_focused="true" >
<shape android:shape="rectangle">
<solid
android:color="@color/blue_button_focus" />
</shape>
</item>
<item>
<shape android:shape="rectangle" >
<solid
android:color="@color/white" />
</shape>
</item>
</selector>
在其中,您可以为视图的每个状态定义颜色,在这种情况下:聚焦和按下。 为了使用它,在R.layout.list_item中,您可以正常设置背景,例如
android:background="@drawable/list_row_background"
考虑到上面描述的xml文件文件名为list_row_background,它位于drawable文件夹中
并且您不应将其设置为可点击,因为它已经可以点击。 我希望能解决你的问题:D 干杯
答案 1 :(得分:0)
一种解决方案是将您的活动更改为ListActivity。
当用户触摸列表项时,会调用此覆盖:
@Override protected void onListItemClick(ListView l,View v, int position,long id)
如果您想改变它,则v是单元格 该位置是适配器的索引。