我已经覆盖了getView()
中的ArrayAdapter
方法。我想知道在覆盖getView()
时是否有办法保留复选框功能?
使用我当前的实现,它只显示每行的图像和文本。它不再显示覆盖之前的复选框。
以下是我的代码:
public class ShortcutsArrayAdapter extends ArrayAdapter<ResolveInfo> {
private final Activity context;
private final List<ResolveInfo> objects;
private PackageManager pm = null;
public ShortcutsArrayAdapter(Activity context, int textViewResourceId,
List<ResolveInfo> objects, PackageManager pm) {
super(context, textViewResourceId, objects);
this.context = context;
this.objects = objects;
this.pm = pm;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflator = context.getLayoutInflater();
View rowView = inflator.inflate(R.layout.rowlayout, null, true);
TextView textView = (TextView) rowView.findViewById(R.id.label);
ImageView imageView = (ImageView) rowView.findViewById(R.id.icon);
textView.setText(objects.get(position).loadLabel(pm));
try {
imageView.setImageBitmap(((BitmapDrawable) pm.getApplicationIcon(objects.get(position).activityInfo.applicationInfo.packageName)).getBitmap());
} catch (NameNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return rowView;
}
}
以下是我创建适配器的方法:
appList = getApplicationList();
setListAdapter(new ShortcutsArrayAdapter(this, android.R.layout.simple_list_item_multiple_choice, appList, pm));
getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
这是行布局xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="@+id/icon"
android:layout_width="40dp"
android:layout_height="40dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/label"
android:text="@+id/label"/>
</LinearLayout>
答案 0 :(得分:1)
为什么不调用super.getView(),然后执行一些你想做的自定义操作? 无论如何,我不明白为什么复选框不应该显示。也许它隐藏在另一个组件后面。你检查过布局了吗?尝试在文本框之前或之后移动它。
您可能需要row_layout.xml中的复选框。如下所示:
<CheckBox
android:id="@+id/check"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginLeft="4px"
android:layout_marginRight="10px" >
</CheckBox>