異なる数のTextViewオブジェクトとImageviewオブジェクトを含むことができるListViewアイテムを追加する必要があります。どうすればいいですか？そして、このオブジェクトのIDを決定して設定する方法は？ImageViewまたはTextViewをIDR.id.chat_messageでLinearLayoutに追加しようとすると、アプリケーションがクラッシュします:(
package com.me.my_app;
import java.util.ArrayList;
import android.app.ListActivity;
import android.content.Context;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class FriendSendMessageActivity extends ListActivity {
ListView view;
public ContactAdapter contactAdapter;
LinearLayout LL;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.chat_send_message);
Bundle extras = getIntent().getExtras();
if(extras != null)
{
int index = Integer.parseInt(extras.get(getPackageName() + ".IndexInList").toString());
String sentFrom = extras.get(getPackageName() + ".SentFrom").toString();
int id = Integer.parseInt(extras.get(getPackageName() + ".Id").toString()); //либо id друга либо id друга
FriendItem.Friend item = TabFriendsActivity.getList().get(index);
view = getListView();
contactAdapter = new ContactAdapter();
contactAdapter.addItem(new MessageItem.Message(1, true, true, true, "123","13:31",new ArrayList<MessageItem.Message.Attachment>()));
ArrayList<MessageItem.Message.Attachment> list = new ArrayList<MessageItem.Message.Attachment>();
list.add(new MessageItem.Message.Attachment(MessageAttachmentType.PHOTO, RoundedImage.createRoundedPhoto(BitmapFactory.decodeResource(MainActivity.res,R.drawable.temp_user_photo))));
contactAdapter.addItem(new MessageItem.Message(1, true, true, true, "123","9:10",list));
view.setAdapter(contactAdapter);
}
}
class ContactAdapter extends BaseAdapter {
private ArrayList<MessageItem.Message> mData = new ArrayList<MessageItem.Message>();
private LayoutInflater mInflater;
private static final int IGNORE_ITEM_VIEW_TYPE = -1;
private static final int TYPE_ITEM = 0; //обычный item
private static final int TYPE_MAX_COUNT = 2; //макс. число layout'ов отображения item'ов
public ContactAdapter()
{
mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public void addItem(final MessageItem.Message item) {
mData.add(item);
notifyDataSetChanged();
}
public int getItemViewType(int position)
{
return TYPE_ITEM;
}
@Override
public int getViewTypeCount() {
return TYPE_MAX_COUNT;
}
public int getCount()
{
return mData.size();
}
public MessageItem.Message getItem(int position)
{
return mData.get(position);
}
public long getItemId(int position)
{
return position;
}
public boolean isEnabled(int pos)
{
return true;
}
public View getView(int position, View convertView, ViewGroup parent) {
MessageItem.ViewHolder holder = null;
MessageItem.Message item = mData.get(position);
LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
if (convertView == null)
{
holder = new MessageItem.ViewHolder();
convertView = mInflater.inflate(item.in_out ? R.layout.chat_message_in_item : R.layout.chat_message_out_item, null, false);
if(item.listAttach.size() > 0)
holder.attachLL = (LinearLayout) findViewById(R.id.chat_message);
for(MessageItem.Message.Attachment attach : item.listAttach)
{
switch(attach.type)
{
case PHOTO:
if(attach.photo != null)
{
ImageView iv = new ImageView(convertView.getContext());
//iv.setLayoutParams(params);
iv.setId(0x7f000000 - 1);
holder.listAttach.add(new MessageItem.Message.Attachment(attach.type,iv));
Log.v("","1" + iv.getId() + " " + holder.listAttach.size());
}
else
Log.v("", "Null!");
break;
}
}
convertView.setTag(holder);
} else {
holder = (MessageItem.ViewHolder) convertView.getTag();
}
for(int i = 0; i < holder.listAttach.size();i++)
{
if(holder.listAttach.get(i).type == MessageAttachmentType.PHOTO && item.listAttach.get(i).photo != null && holder.listAttach.get(i).image != null)
{
holder.attachLL.addView(holder.listAttach.get(i).image);
holder.listAttach.get(i).image.setImageBitmap(item.listAttach.get(i).photo);
}
else
Log.v("", "Unable to add image!");
}
return convertView;
}
}
}
そしてMessageItem.java：
package com.me.my_app;
import java.util.ArrayList;
import java.util.Comparator;
import android.graphics.Bitmap;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MessageItem
{
public static class Message implements Comparator<Message>
{
int id;
boolean in_out;
boolean is_read;
boolean is_delivered;
String message;
String time;
ArrayList<Attachment> listAttach;
public Message(int id, boolean in_out, boolean is_read, boolean is_delivered, String message, String time, ArrayList<Attachment> list)
{
this.id = id;
this.in_out = in_out;
this.is_read = is_read;
this.is_delivered = is_delivered;
this.message = message;
this.time = time;
listAttach = new ArrayList<Attachment>();
if(list != null)
{
for(Attachment a : list)
listAttach.add(a);
}
}
public int compare(Message object1, Message object2) {
return object1.time.compareTo(object2.time);
}
public static class Attachment
{
ImageView image;
MessageAttachmentType type;
Bitmap photo;
String Uri;
public Attachment(MessageAttachmentType type, Bitmap photo)
{
this.type = type;
this.photo = photo;
}
public Attachment(MessageAttachmentType type, ImageView image)
{
this.type = type;
this.image = image;
}
}
}
public static class ViewHolder
{
LinearLayout attachLL;
TextView text, time;
ArrayList<MessageItem.Message.Attachment> listAttach;
public ViewHolder()
{
listAttach = new ArrayList<MessageItem.Message.Attachment>();
}
}
}
enter code here