我为我的列表（JobAdapter）创建了一个自定义适配器，但是，每当我设置适配器时，即使有值（jobs arraylist参数的大小为2），我的活动也不会显示任何内容。
这是我的适配器：
public class JobAdapter extends ArrayAdapter<Job> {
private final Context context;
private final ArrayList<Job> jobs;
private final int layoutResourceId;
public JobAdapter(Context context, int layoutResourceId, ArrayList<Job> jobs) {
super(context, layoutResourceId, jobs);
this.context = context;
this.jobs = jobs;
this.layoutResourceId = layoutResourceId;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
ViewHolder holder = null;
LayoutInflater inflater = (LayoutInflater) context.getSystemService((Activity.LAYOUT_INFLATER_SERVICE));
if (view == null) {
view = inflater.inflate(layoutResourceId, parent, false);
holder = new ViewHolder();
holder.title = (TextView)view.findViewById(R.id.tv_jobTitle);
holder.payrate = (TextView)view.findViewById(R.id.tv_payRate);
holder.startdate = (TextView)view.findViewById(R.id.tv_startDate);
holder.workinghrs = (TextView)view.findViewById(R.id.tv_duration);
holder.location = (TextView)view.findViewById(R.id.tv_location);
holder.companyname = (TextView)view.findViewById(R.id.tv_companyName);
holder.description = (TextView)view.findViewById(R.id.tv_JobDesc);
holder.experience = (TextView)view.findViewById(R.id.tv_experienceReq);
holder.equipment = (TextView)view.findViewById(R.id.tv_equipmentReq);
view.setTag(holder);
} else {
holder = (ViewHolder)view.getTag();
}
Job j = jobs.get(0);
holder.title.setText(j.getJobTitle());
holder.payrate.setText(j.getPayrate());
holder.startdate.setText(j.getDurationStart());
holder.workinghrs.setText(j.getWorkingHrs());
holder.location.setText(j.getLocation());
holder.companyname.setText("ABC Company");
holder.description.setText(j.getDescription());
holder.experience.setText("3-5 years");
holder.equipment.setText("Hardhat");
//TODO: add hardhat, boots and other field to objects mapped
return view;
}
static class ViewHolder
{
TextView title;
TextView payrate;
TextView startdate;
TextView workinghrs;
TextView location;
TextView companyname;
TextView description;
TextView experience;
TextView equipment;
}
}
这就是我在AsyncTask OnPostExecute中设置适配器的方法：
protected void onPostExecute(ArrayList<Job> result) {
arrayAdapter = new JobAdapter(getApplicationContext(), R.layout.jobcard, result);
arrayAdapter.notifyDataSetChanged();
flingContainer.setAdapter(arrayAdapter);
}
这可能是什么问题？ Logcat中没有错误消息，应用程序仍然正常运行，只显示没有数据。数据应显示在为JobAdapter定义的jobcard.xml布局中。
提前感谢您对此的任何帮助！
看起来JobAdapter中的getView（）没有被调用，我试图覆盖JobAdapter中的getCount（）方法返回1，这样我就可以看到一个元素但是也没有用。
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_gravity="top"
android:layout_width="match_parent"
android:layout_height="415dp"
android:padding="5dp"
android:layout_marginTop="20dp">
<LinearLayout
android:id="@+id/outerMainCardLayout"
android:layout_width="match_parent"
android:layout_height="400dp"
android:layout_gravity="center_horizontal|top"
android:orientation="vertical"
android:background="@drawable/swipecard_shadow"
android:gravity="top"
android:layout_marginLeft="5dp">
<LinearLayout
android:id="@+id/mainCardLayout"
android:layout_width="match_parent"
android:layout_height="400dp"
android:layout_gravity="center_horizontal|top"
android:orientation="vertical"
android:weightSum="1"
android:background="#FFFFFF"
android:gravity="top">
<TextView
android:id="@+id/tv_jobTitle"
android:background="#ffffff"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:textStyle="bold"
android:textSize="16sp"
android:textColor="#505353"
android:textAlignment="center"
tools:text="Cement Pouring Guy"
android:layout_gravity="center_horizontal"/>
<TextView
android:id="@+id/tv_companyName"
android:background="#ffffff"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="14sp"
android:textColor="#505353"
android:textAlignment="center"
tools:text="ABC Company"
android:layout_gravity="center_horizontal" />
<LinearLayout
android:id="@+id/cardHeader"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center" >
<TextView
android:id="@+id/tv_experienceReq"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="15dp"
android:layout_marginLeft="10dp"
android:textSize="14sp"
android:textColor="#505353"
android:drawableTop="@drawable/ic_experience"
tools:text="3-5 years" />
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1" />
<TextView
android:id="@+id/tv_location"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="15dp"
android:textSize="14sp"
android:textColor="#505353"
android:drawableTop="@drawable/ic_location"
tools:text="Langley, BC" />
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1" />
<TextView
android:id="@+id/tv_payRate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="15dp"
android:layout_marginRight="10dp"
android:textSize="14sp"
android:textColor="#505353"
android:drawableTop="@drawable/ic_payrate"
tools:text="125/day" />
</LinearLayout>
<TextView
android:id="@+id/tv_JobDesc"
android:textSize="14sp"
android:textColor="#505353"
android:background="#e6e7e8"
tools:text="Pour Cement, Mix Cement, Level Cement and go pick up cement bags."
android:layout_width="match_parent"
android:layout_height="150dp"
android:padding="15dp" />
<LinearLayout
android:id="@+id/additionalInfo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center" >
<TextView
android:id="@+id/tv_startDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="15dp"
android:textSize="14sp"
android:textColor="#505353"
android:layout_marginLeft="10dp"
android:drawableTop="@drawable/ic_date"
tools:text="June 1, 2016" />
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
/>
<TextView
android:id="@+id/tv_duration"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="15dp"
android:textSize="14sp"
android:textColor="#505353"
android:drawableTop="@drawable/ic_clock"
tools:text=" 8h" />
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
/>
<TextView
android:id="@+id/tv_equipmentReq"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="15dp"
android:textSize="14sp"
android:textColor="#505353"
android:layout_marginRight="10dp"
android:drawableTop="@drawable/ic_hardhat"
tools:text="Hardhat" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<View
android:id="@+id/item_swipe_left_indicator"
android:alpha="0"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_margin="20dp"
android:background="#FFFFFF" />
<View
android:id="@+id/item_swipe_right_indicator"
android:alpha="0"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_margin="20dp"
android:layout_gravity="right"
android:background="#FFFFFF" />