我有listview
的自定义适配器,这是getView方法;
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
LayoutInflater inflater = (LayoutInflater) JourneyPlannerActivity.this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.journey_planner_route_detail, viewGroup, false);
LinearLayout layout = (LinearLayout) rowView.findViewById(R.id.journey_planner_detail_detail_main_id);
JourneyPlannerRoute r = m_Routes.get(i);
String directions = "";
for(int j=0 ; j < r.getRoutes().size() ; j++){
ImageView image = new ImageView(JourneyPlannerActivity.this);
String transportMethod = r.getRoutes().get(j).getMeansOfTransport();
if(transportMethod.equals("Train"))
image.setImageResource(R.drawable.network_rail_logo);
else if(transportMethod.equals("Subway"))
image.setBackgroundResource(R.drawable.roundel_tube);
else if(transportMethod.equals("Bus"))
image.setBackgroundResource(R.drawable.bus);
else if(transportMethod.equals("Walk"))
image.setBackgroundResource(R.drawable.walking);
image.setVisibility(View.VISIBLE);
layout.addView(image);
//directions += r.getRoutes().get(j).getMeansOfTransport()+",";
}
directions += " "+r.getDuration();
TextView tv = (TextView) rowView.findViewById(R.id.journey_planner_detail_main_text_view);
tv.setText(directions);
return rowView;
在完成调试之后,图像视图似乎被添加到布局中,但它们并没有出现在屏幕上;
我有一种感觉,这是因为没有找到正确的布局但看起来好像是这样?!
这是行的xml文件;
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="@+id/journey_planner_detail_detail_main_id">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/bus_small"/>
<TextView
android:id="@+id/journey_planner_detail_main_text_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
答案 0 :(得分:2)
不要创建新的图片视图,只需调用rowView.findViewById(R.id.image_id);
(您必须将id添加到xml中)。
实际的错误是TextView
。它设置为fill_parent
,导致新添加的ImageView
显示在可见屏幕的右侧。您可以通过将TextView
宽度变为wrap_content
来更改此设置。但是,使用xml布局中定义的ImageView
会更好。