融雲自定義消息列表item的佈局

一、先看下效果圖

圖中：新人和領金幣標籤在融雲默認的ui中是沒有的。這功能該怎麼實現呢

二、思路分析

因爲它只是在原來的基礎上添加了兩個ui而已，所以還沒到需要自定義消息會話程度，不過好像也是自定義消息。首先想到的是在rc_item_base_conversation佈局裏面添加相應的ui。但是添加完，如何獲取到這ui，進行賦值操作呢。

下面我們開始吧

步驟一、rc_item_base_conversation中添加相應的ui

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="64dp"
android:gravity="center_vertical"
android:layout_marginLeft="5dp"
android:layout_marginRight="14dp"
android:background="@android:color/transparent">

<LinearLayout
    android:id="@+id/rc_layout"
    android:layout_width="match_parent"
    android:layout_height="22dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="14dp"
    android:layout_marginTop="8dp"
    android:orientation="horizontal">

    <TextView
        android:id="@id/rc_conversation_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:background="@android:color/transparent"
        android:ellipsize="end"
        android:singleLine="true"
        android:textColor="@color/rc_text_color_primary"
        android:textSize="@dimen/rc_conversation_item_name_size" />

    <TextView
        android:id="@+id/tv_new_user_flag"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="@dimen/s16px"
        android:textColor="@color/c_f02fa1"
        android:paddingLeft="4dp"
        android:paddingTop="2dp"
        android:paddingRight="4dp"
        android:paddingBottom="2dp"
        android:text="@string/new_user"
        android:background="@drawable/msg_list_new_user_tag_shape"
        android:layout_marginLeft="6dp"
        android:visibility="gone"
        />

    <TextView
        android:id="@+id/tv_get_gold"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/white"
        android:textSize="@dimen/s16px"
        android:paddingLeft="4dp"
        android:paddingTop="2dp"
        android:paddingRight="4dp"
        android:paddingBottom="2dp"
        android:text="@string/get_gold_tag"
        android:layout_marginLeft="6dp"
        android:background="@drawable/msg_list_get_gold_tag_shape"
        android:visibility="gone"
        />

    <!--佔空間作用-->
    <View
        android:layout_width="0dp"
        android:layout_height="1px"
        android:layout_weight="1"/>

    <TextView
        android:id="@id/rc_conversation_time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@android:color/transparent"
        android:gravity="right|top"
        android:textColor="@color/rc_text_color_secondary"
        android:textSize="@dimen/rc_conversation_item_time_size" />
</LinearLayout>

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rc_layout"
    android:layout_marginBottom="8dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="14dp">

    <TextView
        android:id="@id/rc_conversation_content"
        android:layout_width="231dp"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:background="@android:color/transparent"
        android:ellipsize="end"
        android:gravity="center_vertical"
        android:paddingTop="1dp"
        android:singleLine="true"
        android:textColor="@color/rc_text_color_secondary"
        android:textSize="@dimen/rc_conversation_item_data_size" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:orientation="horizontal"
        android:paddingTop="1dp">

        <ImageView
            android:id="@id/rc_conversation_status"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/rc_read_receipt"
            android:visibility="gone" />

        <ImageView
            android:id="@+id/rc_conversation_msg_block"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="8dp"
            android:src="@drawable/rc_ic_message_block"
            android:visibility="gone" />

    </LinearLayout>

</RelativeLayout>

</RelativeLayout>

如：tv_new_user_flag TextView控件，還有些爆紅不要緊，運行不會出錯的。

步驟二、關鍵的一步 自定義RongPrivateConversationProvider類

名字隨你起，原來會話的顯示是用PrivateConversationProvider，只是它是封裝的，我沒辦法去修改它的代碼。那麼就想我能不能建一個和PrivateConversationProvider一樣的代碼，然後註冊它，系統就用它不用PrivateConversationProvider了。希望你細品

RongPrivateConversationProvider類：

@ConversationProviderTag(
    conversationType = "private",
    portraitPosition = 1
)
public class RongPrivateConversationProvider implements IContainerItemProvider.ConversationProvider<UIConversation> {
private static final String TAG = "RongPrivateConversationProvider";

public RongPrivateConversationProvider() {
}

public View newView(Context context, ViewGroup viewGroup) {
    View result = LayoutInflater.from(context).inflate(layout.rc_item_base_conversation, (ViewGroup)null);
    RongPrivateConversationProvider.ViewHolder holder = new RongPrivateConversationProvider.ViewHolder();
    holder.title = (TextView)result.findViewById(id.rc_conversation_title);
    holder.time = (TextView)result.findViewById(id.rc_conversation_time);
    holder.content = (TextView)result.findViewById(id.rc_conversation_content);
    holder.notificationBlockImage = (ImageView)result.findViewById(id.rc_conversation_msg_block);
    holder.readStatus = (ImageView)result.findViewById(id.rc_conversation_status);
    holder.tv_get_gold = (TextView)result.findViewById(R.id.tv_get_gold);
    holder.tv_new_user_flag = (TextView)result.findViewById(R.id.tv_new_user_flag);
    result.setTag(holder);
    return result;
}

private void handleMentionedContent(final RongPrivateConversationProvider.ViewHolder holder, final View view, final UIConversation data) {

    final SpannableStringBuilder builder = new SpannableStringBuilder();
    final String preStr = view.getContext().getString(string.rc_message_content_mentioned);
    if (holder.content.getWidth() > 60) {
        CharSequence cutStr = TextUtils.ellipsize(preStr + " " + data.getConversationContent(), holder.content.getPaint(), (float)(holder.content.getWidth() - 60), TextUtils.TruncateAt.END);
        SpannableString string = new SpannableString(cutStr);
        int colorSpanLength = preStr.length();
        if (colorSpanLength > cutStr.length()) {
            colorSpanLength = cutStr.length();
        }

        string.setSpan(new ForegroundColorSpan(view.getContext().getResources().getColor(color.rc_mentioned_color)), 0, colorSpanLength, 33);
        builder.append(string);
        AndroidEmoji.ensure(builder);
        holder.content.setText(builder, TextView.BufferType.SPANNABLE);
    } else {
        holder.content.post(new Runnable() {
            public void run() {
                SpannableString str;
                if (holder.content.getWidth() > 60) {
                    CharSequence cutStr = TextUtils.ellipsize(preStr + " " + data.getConversationContent(), holder.content.getPaint(), (float)(holder.content.getWidth() - 40), TextUtils.TruncateAt.END);
                    str = new SpannableString(cutStr);
                    int colorSpanLength = preStr.length();
                    if (colorSpanLength > cutStr.length()) {
                        colorSpanLength = cutStr.length();
                    }

                    str.setSpan(new ForegroundColorSpan(view.getContext().getResources().getColor(color.rc_mentioned_color)), 0, colorSpanLength, 33);
                    builder.append(str);
                } else {
                    String oriStr = preStr + " " + data.getConversationContent();
                    str = new SpannableString(oriStr);
                    str.setSpan(new ForegroundColorSpan(view.getContext().getResources().getColor(color.rc_mentioned_color)), 0, preStr.length(), 33);
                    builder.append(str);
                }

                AndroidEmoji.ensure(builder);
                holder.content.setText(builder, TextView.BufferType.SPANNABLE);
            }
        });
    }

}

private void handleDraftContent(final RongPrivateConversationProvider.ViewHolder holder, final View view, final UIConversation data) {

    final SpannableStringBuilder builder = new SpannableStringBuilder();
    final String preStr = view.getContext().getString(string.rc_message_content_draft);
    if (holder.content.getWidth() > 60) {
        CharSequence cutStr = TextUtils.ellipsize(preStr + " " + data.getDraft(), holder.content.getPaint(), (float)(holder.content.getWidth() - 60), TextUtils.TruncateAt.END);
        SpannableString string = new SpannableString(cutStr);
        int colorSpanLength = preStr.length();
        if (colorSpanLength > cutStr.length()) {
            colorSpanLength = cutStr.length();
        }

        string.setSpan(new ForegroundColorSpan(view.getContext().getResources().getColor(color.rc_draft_color)), 0, colorSpanLength, 33);
        builder.append(string);
        AndroidEmoji.ensure(builder);
        holder.content.setText(builder, TextView.BufferType.SPANNABLE);
    } else {
        holder.content.post(new Runnable() {
            public void run() {
                SpannableString str;
                if (holder.content.getWidth() > 60) {
                    CharSequence cutStr = TextUtils.ellipsize(preStr + " " + data.getDraft(), holder.content.getPaint(), (float)(holder.content.getWidth() - 60), TextUtils.TruncateAt.END);
                    str = new SpannableString(cutStr);
                    int colorSpanLength = preStr.length();
                    if (colorSpanLength > cutStr.length()) {
                        colorSpanLength = cutStr.length();
                    }

                    str.setSpan(new ForegroundColorSpan(view.getContext().getResources().getColor(color.rc_draft_color)), 0, colorSpanLength, 33);
                    builder.append(str);
                } else {
                    String oriStr = preStr + " " + data.getDraft();
                    str = new SpannableString(oriStr);
                    str.setSpan(new ForegroundColorSpan(view.getContext().getResources().getColor(color.rc_draft_color)), 0, preStr.length(), 33);
                    builder.append(str);
                }

                AndroidEmoji.ensure(builder);
                holder.content.setText(builder, TextView.BufferType.SPANNABLE);
            }
        });
    }

}

private void handleCommonContent(final RongPrivateConversationProvider.ViewHolder holder, UIConversation data) {

    if (holder.content.getWidth() > 60 && data.getConversationContent() != null) {
        CharSequence cutStr = TextUtils.ellipsize(data.getConversationContent(), holder.content.getPaint(), (float)(holder.content.getWidth() - 60), TextUtils.TruncateAt.END);
        holder.content.setText(cutStr, TextView.BufferType.SPANNABLE);
    } else {
        final CharSequence cutStr = data.getConversationContent();
        holder.content.post(new Runnable() {
            public void run() {
                if (holder.content.getWidth() > 60 && cutStr != null) {
                    CharSequence str = TextUtils.ellipsize(cutStr, holder.content.getPaint(), (float)(holder.content.getWidth() - 60), TextUtils.TruncateAt.END);
                    holder.content.setText(str, TextView.BufferType.SPANNABLE);
                } else {
                    holder.content.setText(cutStr);
                }

            }
        });
    }

}

public void bindView(View view, int position, UIConversation data) {
    RongPrivateConversationProvider.ViewHolder holder = (RongPrivateConversationProvider.ViewHolder)view.getTag();
    ProviderTag tag = null;
    if (data == null) {
        holder.title.setText((CharSequence)null);
        holder.time.setText((CharSequence)null);
        holder.content.setText((CharSequence)null);
    } else {
        setNewUserAndGoldTag(data.getConversationTargetId(),holder.tv_new_user_flag,holder.tv_get_gold);
        holder.title.setText(data.getUIConversationTitle());
        String time = RongDateUtils.getConversationListFormatDate(data.getUIConversationTime(), view.getContext());
        holder.time.setText(time);
        if (TextUtils.isEmpty(data.getDraft()) && !data.getMentionedFlag()) {
            boolean readRec = false;

            try {
                readRec = view.getResources().getBoolean(bool.rc_read_receipt);
            } catch (Resources.NotFoundException var10) {
                RLog.e("RongPrivateConversationProvider", "rc_read_receipt not configure in rc_config.xml");
                var10.printStackTrace();
            }

            if (readRec) {
                if (data.getSentStatus() == Message.SentStatus.READ && data.getConversationSenderId().equals(RongIM.getInstance().getCurrentUserId()) && !(data.getMessageContent() instanceof RecallNotificationMessage)) {
                    holder.readStatus.setVisibility(View.VISIBLE);
                } else {
                    holder.readStatus.setVisibility(View.GONE);
                }
            }

            this.handleCommonContent(holder, data);
        } else {
            if (data.getMentionedFlag()) {
                this.handleMentionedContent(holder, view, data);
            } else {
                this.handleDraftContent(holder, view, data);
            }

            holder.readStatus.setVisibility(View.GONE);
        }

        if (RongContext.getInstance() != null && data.getMessageContent() != null) {
            tag = RongContext.getInstance().getMessageProviderTag(data.getMessageContent().getClass());
        }

        if (data.getSentStatus() != null && (data.getSentStatus() == Message.SentStatus.FAILED || data.getSentStatus() == Message.SentStatus.SENDING) && tag != null && tag.showWarning() && data.getConversationSenderId() != null && data.getConversationSenderId().equals(RongIM.getInstance().getCurrentUserId()) && TextUtils.isEmpty(data.getDraft())) {
            Bitmap bitmap = BitmapFactory.decodeResource(view.getResources(), drawable.rc_conversation_list_msg_send_failure);
            int width = bitmap.getWidth();
            Drawable drawable = null;
            if (data.getSentStatus() == Message.SentStatus.FAILED && TextUtils.isEmpty(data.getDraft())) {
                if (ResendManager.getInstance().needResend(data.getLatestMessageId())) {

                    drawable = view.getContext().getResources().getDrawable(R.drawable.rc_conversation_list_msg_sending);
                } else {
                    drawable = view.getContext().getResources().getDrawable(R.drawable.rc_conversation_list_msg_send_failure);
                }
            } else if (data.getSentStatus() == Message.SentStatus.SENDING && TextUtils.isEmpty(data.getDraft())) {
                drawable = view.getContext().getResources().getDrawable(R.drawable.rc_conversation_list_msg_sending);
            }

            if (drawable != null) {
                drawable.setBounds(0, 0, width, width);
                holder.content.setCompoundDrawablePadding(10);
                holder.content.setCompoundDrawables(drawable, (Drawable)null, (Drawable)null, (Drawable)null);
            }
        } else {
            holder.content.setCompoundDrawables((Drawable)null, (Drawable)null, (Drawable)null, (Drawable)null);
        }

        Conversation.ConversationNotificationStatus status = data.getNotificationStatus();
        if (status != null && status.equals(Conversation.ConversationNotificationStatus.DO_NOT_DISTURB)) {
            holder.notificationBlockImage.setVisibility(View.VISIBLE);
        } else {
            holder.notificationBlockImage.setVisibility(View.GONE);
        }
    }

}



public Spannable getSummary(UIConversation data) {
    return null;
}

public String getTitle(String userId) {
    UserInfo userInfo = RongUserInfoManager.getInstance().getUserInfo(userId);
    return userInfo == null ? userId : userInfo.getName();
}

public Uri getPortraitUri(String userId) {
    UserInfo userInfo = RongUserInfoManager.getInstance().getUserInfo(userId);
    return userInfo == null ? null : userInfo.getPortraitUri();
}

protected class ViewHolder {
    public TextView title;
    public TextView time;
    public TextView content;
    public ImageView notificationBlockImage;
    public ImageView readStatus;
    public TextView tv_get_gold;
    public TextView tv_new_user_flag;

    protected ViewHolder() {
    }
}
}  

看到沒，這樣我們就可以操作新增的View了

步驟三、別忘了註冊會話類型

RongIM.getInstance().registerConversationTemplate(new RongPrivateConversationProvider());  

如果還有問題請私信我或者評論。