我有一個自定義ArrayAdapter包含文本和圖像,但不知何故項目不顯示在列表中。 這是我的自定義適配器:自定義ArrayAdapter行不顯示在列表中
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class DrawerArrayAdapter extends ArrayAdapter<String> {
private final Context context;
private final String[] entries;
private final Integer[] imageIds;
public DrawerArrayAdapter(Context context, String[] entries, Integer[] imageIds) {
super(context, R.layout.drawer_list_item, entries);
this.context = context;
this.entries = entries;
this.imageIds = imageIds;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.drawer_list_item, parent, false);
TextView entryView = (TextView) rowView.findViewById(R.id.drawer_list_entry);
ImageView iconView = (ImageView) rowView.findViewById(R.id.drawer_list_icon);
entryView.setText(entries[position]);
iconView.setImageResource(imageIds[position]);
return rowView;
}
}
這是片段:
import android.app.ListFragment;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class DrawerFragment extends ListFragment {
private String[] drawerListEntries;
private DrawerLayout drawerLayout;
private Integer[] drawerListIcons;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
drawerListIcons = new Integer[] {R.drawable.ic_action_user,R.drawable.ic_action_user,R.drawable.ic_action_user,R.drawable.ic_action_user};
drawerListEntries = getResources().getStringArray(R.array.drawer_items);
setListAdapter(new DrawerArrayAdapter(getActivity(), drawerListEntries, drawerListIcons));
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.drawer_fragment, container, false);
}
@Override
public void onStart() {
super.onStart();
drawerLayout = (DrawerLayout) getActivity().findViewById(R.id.drawer_layout);
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
Toast.makeText(getActivity(),
getListView().getItemAtPosition(position).toString(),
Toast.LENGTH_LONG).show();
}
@Override
public void onPrepareOptionsMenu(Menu menu) {
//boolean drawerOpen = drawerLayout.isDrawerOpen(drawerList);
//menu.findItem(R.id.action_user).setVisible(!drawerOpen);
super.onPrepareOptionsMenu(menu);
}
}
,這是我drawer_list_item.xml
:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="70dp"
android:padding="5dp"
android:orientation="vertical" >
<TextView
android:id="@+id/drawer_list_entry"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="12dp"
android:paddingLeft="20dp"
android:paddingBottom="20dp"
android:paddingTop="20dp"
android:textSize="24sp"
android:textColor="@color/light_blue"
android:fontFamily="sans-serif-light" >
</TextView>
<ImageView
android:id="@+id/drawer_list_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="@string/drawer_icon">
</ImageView>
</LinearLayout>
我也許應該提到的是,當我只使用一個正常的ArrayAdapter只有文本,它完美的工作。任何人看到這個問題?
感謝您的有用提示。我只是做了你提到的,但是文本和圖像都沒有出現在列表中?我沒有得到任何錯誤/例外。我可以點擊列表項目就好了,導航也可以,但沒有文字或圖片。你知道可能是什麼問題嗎? – Loolooii
在drawer_list_item的LinearLayout中,使用'android:layout_height =「wrap_content」'。垂直邊距和填充對於70dp的有限高度來說太多了。 –
感謝那種作品。我現在看到圖標,但仍然沒有文字,也無法弄清楚什麼是錯的。我還刪除了文本中的所有填充和邊距,仍然沒有看到。你在TextView中看到什麼奇怪的東西嗎?我正在爲此工作數小時,這是如此簡單但同時令人惱火.. – Loolooii