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GitHub地址:https://github.com/motianhuo/wechat
微信的消息列表中,向左滑动删除Item效果不错,咱们也实现一下。
咱借助Github大牛daimajia的一个开源库来实现。AndroidSwipeLayout
感兴趣的童鞋,可以研究研究,学习学习人家的属性动画是怎么实现的。
OK,开始了,看咱们的实现效果:
下面来看代码:
先看Item layout_item_msg.xml 布局文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res/com.juns.wechat"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<!-- SwipeLayout控件 -->
<com.juns.wechat.widght.swipe.SwipeLayout
android:id="@+id/swipe"
app:drag_edge="right"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!-- 底层删除按钮布局 -->
<LinearLayout
android:id="@+id/layout_back"
android:background="@color/red"
android:gravity="center"
android:layout_width="80dp"
android:layout_height="65.0dip">
<TextView
android:id="@+id/txt_del"
style="@style/MMFontTitleInList"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="删除"
android:textColor="@color/white"
android:textSize="18sp"
android:singleLine="true" />
</LinearLayout>
<!-- 上层显示布局 -->
<LinearLayout
android:id="@+id/contactitem_layout"
style="@style/MMListItem"
android:layout_height="65.0dip"
android:background="@color/white"
android:paddingLeft="12dip">
<RelativeLayout
android:id="@+id/avatar_container"
android:layout_width="59dp"
android:layout_marginTop="4dp"
android:layout_height="match_parent"
android:layout_alignParentLeft="true">
<ImageView
android:id="@+id/contactitem_avatar_iv"
android:layout_width="50.0dip"
android:layout_height="50.0dip"
android:src="@drawable/head" />
<TextView
android:id="@+id/unread_msg_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:background="@drawable/aii"
android:gravity="center"
android:textColor="@android:color/white"
android:textSize="12sp" />
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:orientation="vertical"
android:paddingLeft="5dip">
<TextView
android:id="@+id/txt_name"
style="@style/MMFontTitleInList"
android:textColor="@color/black"
android:singleLine="true" />
<TextView
android:id="@+id/txt_state"
style="@style/MMFontTag"
android:layout_below="@+id/txt_name"
android:text="已读"
android:visibility="gone"
android:background="@drawable/btn_bg_blue"
android:layout_marginTop="5dp" />
<TextView
android:id="@+id/txt_content"
style="@style/MMFontTitleInList"
android:layout_below="@+id/txt_name"
android:layout_toRightOf="@+id/txt_state"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:textSize="14sp"
android:textColor="@color/black1"
android:singleLine="true" />
</RelativeLayout>
<TextView
android:id="@+id/txt_time"
style="@style/MMFontTitleInList"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginTop="10dp"
android:layout_marginRight="10dp"
android:gravity="top"
android:textSize="12sp"
android:singleLine="true" />
</LinearLayout>
</com.juns.wechat.widght.swipe.SwipeLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/black2" />
</LinearLayout>
再看Adpter实现方式:NewMsgAdpter.java
package com.juns.wechat.adpter;
import java.util.Date;
import java.util.Hashtable;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.TextView.BufferType;
import com.easemob.chat.EMChatManager;
import com.easemob.chat.EMConversation;
import com.easemob.chat.EMMessage;
import com.easemob.chat.ImageMessageBody;
import com.easemob.chat.TextMessageBody;
import com.easemob.util.DateUtils;
import com.juns.wechat.GloableParams;
import com.juns.wechat.R;
import com.juns.wechat.bean.GroupInfo;
import com.juns.wechat.bean.PublicMsgInfo;
import com.juns.wechat.bean.User;
import com.juns.wechat.chat.utils.Constant;
import com.juns.wechat.chat.utils.SmileUtils;
import com.juns.wechat.common.UserUtils;
import com.juns.wechat.common.ViewHolder;
import com.juns.wechat.dialog.WarnTipDialog;
import com.juns.wechat.net.NetClient;
import com.juns.wechat.widght.swipe.SwipeLayout;
public class NewMsgAdpter extends BaseAdapter {
protected Context context;
private List<EMConversation> conversationList;
private WarnTipDialog Tipdialog;
private int deleteID;
private String ChatID;
private NetClient netClient;
private String userid;
private Hashtable<String, String> ChatRecord = new Hashtable<String, String>();
public PublicMsgInfo PublicMsg = null;
public NewMsgAdpter(Context ctx, List<EMConversation> objects) {
context = ctx;
conversationList = objects;
netClient = new NetClient(ctx);
userid = UserUtils.getUserID(context);
}
public void setPublicMsg(PublicMsgInfo Msg) {
PublicMsg = Msg;
}
public PublicMsgInfo getPublicMsg() {
return PublicMsg;
}
public Hashtable<String, String> getChatRecord() {
return ChatRecord;
}
@Override
public int getCount() {
return conversationList.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(context).inflate(
R.layout.layout_item_msg, parent, false);
}
ImageView img_avar = ViewHolder.get(convertView,
R.id.contactitem_avatar_iv);
TextView txt_name = ViewHolder.get(convertView, R.id.txt_name);
TextView txt_state = ViewHolder.get(convertView, R.id.txt_state);
TextView txt_del = ViewHolder.get(convertView, R.id.txt_del);
TextView txt_content = ViewHolder.get(convertView, R.id.txt_content);
TextView txt_time = ViewHolder.get(convertView, R.id.txt_time);
TextView unreadLabel = ViewHolder.get(convertView,
R.id.unread_msg_number);
SwipeLayout swipe = ViewHolder.get(convertView, R.id.swipe);
if (PublicMsg != null && position == 0) {
txt_name.setText("订阅号");
img_avar.setImageResource(R.drawable.icon_public);
txt_time.setText(PublicMsg.getTime());
txt_content.setText(PublicMsg.getContent());
unreadLabel.setText("3");
unreadLabel.setVisibility(View.VISIBLE);
swipe.setSwipeEnabled(false);
} else {
swipe.setSwipeEnabled(true);
// 获取与此用户/群组的会话
final EMConversation conversation = conversationList.get(position);
// 获取用户username或者群组groupid
ChatID = conversation.getUserName();
txt_del.setTag(ChatID);
if (conversation.isGroup()) {
GroupInfo info = GloableParams.GroupInfos.get(ChatID);
if (info != null) {
txt_name.setText(info.getGroup_name());
img_avar.setImageResource(R.drawable.defult_group);
// initGroupInfo(img_avar, txt_name);// 获取群组信息
}
} else {
User user = GloableParams.Users.get(ChatID);
if (user != null) {
txt_name.setText(user.getUserName());
// initUserInfo(img_avar, txt_name);// 获取用户信息
}
}
if (conversation.getUnreadMsgCount() > 0) {
// 显示与此用户的消息未读数
unreadLabel.setText(String.valueOf(conversation
.getUnreadMsgCount()));
unreadLabel.setVisibility(View.VISIBLE);
} else {
unreadLabel.setVisibility(View.INVISIBLE);
}
if (conversation.getMsgCount() != 0) {
// 把最后一条消息的内容作为item的message内容
EMMessage lastMessage = conversation.getLastMessage();
txt_content.setText(
SmileUtils.getSmiledText(context,
getMessageDigest(lastMessage, context)),
BufferType.SPANNABLE);
txt_time.setText(DateUtils.getTimestampString(new Date(
lastMessage.getMsgTime())));
if (lastMessage.status == EMMessage.Status.SUCCESS) {
txt_state.setText("送达");
// txt_state.setBackgroundResource(R.drawable.btn_bg_orgen);
} else if (lastMessage.status == EMMessage.Status.FAIL) {
txt_state.setText("失败");
// txt_state.setBackgroundResource(R.drawable.btn_bg_red);
} else if (lastMessage.direct == EMMessage.Direct.RECEIVE) {
txt_state.setText("已读");
txt_state.setBackgroundResource(R.drawable.btn_bg_blue);
}
}
txt_del.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
deleteID = position;
Tipdialog = new WarnTipDialog((Activity) context,
"您确定要删除该聊天吗?");
Tipdialog.setBtnOkLinstener(onclick);
Tipdialog.show();
}
});
}
return convertView;
}
private DialogInterface.OnClickListener onclick = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
EMConversation conversation = conversationList.get(deleteID);
EMChatManager.getInstance().deleteConversation(
conversation.getUserName());
// Utils.showLongToast((Activity) context, "删除成功");
conversationList.remove(deleteID);
notifyDataSetChanged();
Tipdialog.dismiss();
}
};
/**
* 根据消息内容和消息类型获取消息内容提示
*
* @param message
* @param context
* @return
*/
private String getMessageDigest(EMMessage message, Context context) {
String digest = "";
switch (message.getType()) {
case LOCATION: // 位置消息
if (message.direct == EMMessage.Direct.RECEIVE) {
digest = getStrng(context, R.string.location_recv);
String name = message.getFrom();
if (GloableParams.UserInfos != null) {
User user = GloableParams.Users.get(message.getFrom());
if (null != user.getUserName())
name = user.getUserName();
}
digest = String.format(digest, message.getFrom());
return digest;
} else {
digest = getStrng(context, R.string.location_prefix);
}
break;
case IMAGE: // 图片消息
ImageMessageBody imageBody = (ImageMessageBody) message.getBody();
digest = getStrng(context, R.string.picture)
+ imageBody.getFileName();
break;
case VOICE:// 语音消息
digest = getStrng(context, R.string.voice_msg);
break;
case VIDEO: // 视频消息
digest = getStrng(context, R.string.video);
break;
case TXT: // 文本消息
if (!message.getBooleanAttribute(
Constant.MESSAGE_ATTR_IS_VOICE_CALL, false)) {
TextMessageBody txtBody = (TextMessageBody) message.getBody();
digest = txtBody.getMessage();
} else {
TextMessageBody txtBody = (TextMessageBody) message.getBody();
digest = getStrng(context, R.string.voice_call)
+ txtBody.getMessage();
}
break;
case FILE: // 普通文件消息
digest = getStrng(context, R.string.file);
break;
default:
System.err.println("error, unknow type");
return "";
}
return digest;
}
String getStrng(Context context, int resId) {
return context.getResources().getString(resId);
}
}
OK,项目的完整代码可以去 Github (点击这里) 下载。
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