BaseAdapter-ListView中的item显示多种布局
想要在listview中的item添加多中布局主要是加多两个方法：
//按位置设置不同的布局
public int getItemViewType(int position){
return position;
}
//一共有多少个布局
public int getViewTypeCount(int position){
return position;
}
演示图片：
不要吐槽效果只是演示一下如何实现的，嗯！
下面是代码演示：
item布局文件：
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.tentcoo.tentcooTools.R;
import com.tentcoo.tentcooTools.framework.BaseActivity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
/*
*
*@auther Jianjun Huang
*
*@date 2015年12月4日
*/
public class Notification extends BaseActivity {
private ListView notification_ListView;
private TextView title;
List> notification_List;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.notification_main);
title = (TextView) this.findViewById(R.id.tv_actionbar_title);
title.setText("通知");
// 建立数据
notification_List = new ArrayList>();
notification_ListView = (ListView) findViewById(R.id.lv_notification);
Notification_Adapter notification_Adapter = new Notification_Adapter(this, getNotificationData());
// 绑定适配器与listview
notification_ListView.setAdapter(notification_Adapter);
}
// 数据
private List> getNotificationData() {
for (int i = 0; i < 5; i++) {
Map notification_map = new HashMap();
notification_map.put("key_today", "Today");
notification_map.put("key_month", "January");
notification_map.put("key_day", "" + i);
notification_map.put("key_suffic", "th");
notification_map.put("key_time", i + ":00pm");
notification_map.put("key_title", "android交流会");
notification_map.put("key_content", "开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！开会啊！");
notification_List.add(notification_map);
}
return notification_List;
}
// BaesAdapter
public class Notification_Adapter extends BaseAdapter {
private LayoutInflater mInflater;
private final int TODAY_STYLE = 0;
private final int OTHER_STYLE = 1;
public Notification_Adapter(Context context, List> list) {
mInflater = LayoutInflater.from(context);
// 初始化
notification_List = list;
}
@Override
public int getCount() {
return notification_List.size();
}
@Override
public Object getItem(int position) {
return notification_List.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getItemViewType(int position) {
// 按位置分配布局
if (position == 0) {
return TODAY_STYLE;
} else {
return OTHER_STYLE;
}
}
// 布局类型数量
@Override
public int getViewTypeCount() {
return 2;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
int p = position;
int type = getItemViewType(position);
ViewHolder_Other viewHolder_Other = null;
ViewHolder_Today viewHolder_Today = null;
// 设置视图
if (convertView == null) {
viewHolder_Other = new ViewHolder_Other();
viewHolder_Today = new ViewHolder_Today();
// 确定布局
switch (type) {
case OTHER_STYLE:
convertView = mInflater.inflate(R.layout.notification_item_other, null);
viewHolder_Other.month = (TextView) convertView.findViewById(R.id.tv_notification_other_month);
viewHolder_Other.day = (TextView) convertView.findViewById(R.id.tv_notification_other_day);
viewHolder_Other.suffic = (TextView) convertView.findViewById(R.id.tv_notification_other_suffic);
viewHolder_Other.time = (TextView) convertView.findViewById(R.id.tv_notification_other_time);
viewHolder_Other.title = (TextView) convertView.findViewById(R.id.tv_notification_other_title);
viewHolder_Other.content = (TextView) convertView.findViewById(R.id.tv_notification_other_content);
convertView.setTag(viewHolder_Other);
break;
case TODAY_STYLE:
convertView = mInflater.inflate(R.layout.notification_item_today, null);
viewHolder_Today.today = (TextView) convertView.findViewById(R.id.tv_notification_Today);
viewHolder_Today.time = (TextView) convertView.findViewById(R.id.tv_notification_time_today);
viewHolder_Today.title = (TextView) convertView.findViewById(R.id.tv_notification_title_today);
viewHolder_Today.content = (TextView) convertView.findViewById(R.id.tv_notification_content_today);
convertView.setTag(viewHolder_Today);
break;
default:
break;
}
} else {
switch (type) {
case OTHER_STYLE:
viewHolder_Other = (ViewHolder_Other) convertView.getTag();
break;
case TODAY_STYLE:
viewHolder_Today = (ViewHolder_Today) convertView.getTag();
}
}
// 设置资源
switch (type) {
case OTHER_STYLE:
viewHolder_Other.month.setText(notification_List.get(position).get("key_month").toString());
viewHolder_Other.day.setText(notification_List.get(position).get("key_day").toString());
viewHolder_Other.suffic.setText(notification_List.get(position).get("key_suffic").toString());
viewHolder_Other.time.setText(notification_List.get(position).get("key_time").toString());
viewHolder_Other.title.setText(notification_List.get(position).get("key_title").toString());
viewHolder_Other.content.setText(notification_List.get(position).get("key_content").toString());
break;
case TODAY_STYLE:
viewHolder_Today.today.setText(notification_List.get(position).get("key_today").toString());
viewHolder_Today.time.setText(notification_List.get(position).get("key_time").toString());
viewHolder_Today.title.setText(notification_List.get(position).get("key_title").toString());
viewHolder_Today.content.setText(notification_List.get(position).get("key_content").toString());
}
// 设置透明度
switch (p) {
case 0:
viewHolder_Today.today.setTextColor(Color.argb(255, 95, 194, 38));
viewHolder_Today.time.setTextColor(Color.argb(255, 72, 72, 7));
notifyDataSetChanged();
break;
case 1:
viewHolder_Other.month.setTextColor(Color.argb(200, 95, 194, 38));
viewHolder_Other.day.setTextColor(Color.argb(200, 95, 194, 38));
viewHolder_Other.suffic.setTextColor(Color.argb(200, 95, 194, 38));
viewHolder_Other.time.setTextColor(Color.argb(200, 72, 72, 72));
notifyDataSetChanged();
break;
case 2:
viewHolder_Other.month.setTextColor(Color.argb(150, 95, 194, 38));
viewHolder_Other.day.setTextColor(Color.argb(150, 95, 194, 38));
viewHolder_Other.suffic.setTextColor(Color.argb(150, 95, 194, 38));
viewHolder_Other.time.setTextColor(Color.argb(150, 72, 72, 72));
notifyDataSetChanged();
break;
default:
viewHolder_Other.month.setTextColor(Color.argb(100, 95, 194, 38));
viewHolder_Other.day.setTextColor(Color.argb(100, 95, 194, 38));
viewHolder_Other.suffic.setTextColor(Color.argb(100, 95, 194, 38));
viewHolder_Other.time.setTextColor(Color.argb(100, 72, 72, 72));
notifyDataSetChanged();
}
return convertView;
}
class ViewHolder_Other {
private TextView month;
private TextView day;
private TextView suffic;
private TextView time;
private TextView title;
private TextView content;
}
class ViewHolder_Today {
private TextView today;
private TextView time;
private TextView title;
private TextView content;
}
}
} 其实最主要的就是通过getItemViewType的方法按位置返回一个标志，在通过该标志选择加载哪一个布局和相应的数据就可以了，这样就可以在不同的位置显示不同的布局。
源码中还有其他东西比较乱就不上传了，有什么不对的或更好的方法希望可以评论一下。