java - 如何在群聊中显示消息和时间？

Question

我正在开发一个 android 应用程序，当我在群聊中发送消息时，我有一个群聊功能，我需要显示消息和时间(在消息的末尾，时间需要显示在每个聊天消息)。

Here is my layout code

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="5dp"
    android:paddingTop="5dp"
    android:paddingLeft="10dp">

     <TextView
        android:id="@+id/txtInfo"
        android:layout_width="wrap_content"
        android:layout_height="30sp"
        android:layout_gravity="left"
        android:textSize="12sp"
        android:textColor="@color/lightred"
        android:textStyle="italic"
        />

    <TextView
        android:id="@+id/txtMsg"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="16dp"
        android:layout_marginRight="80dp"
        android:background="@color/grey"
        android:textColor="@color/white"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:paddingTop="5dp"
        android:paddingBottom="5dp"
        android:textStyle="italic|bold"
        />

</LinearLayout>

"@+id/txtInfo"用于获取当前日期和时间 & "@+id/txtMsg"用于显示消息。

现在我的输出看起来像这样

但我期待我的输出，

我的编程代码如下，

 public class MessagesListAdapter extends BaseAdapter {

        private Context context;
        private List<ChatMessageObjects> messagesItems;

        public MessagesListAdapter(Context context, List<ChatMessageObjects> navDrawerItems) {
            this.context = context;
            this.messagesItems = navDrawerItems;
        }

        @Override
        public int getCount() {
            return messagesItems.size();
        }

        @Override
        public Object getItem(int position) {
            return messagesItems.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }


        @Override
        public View getView(int position, View convertView, ViewGroup parent) {

            /**
             * The following list not implemented reusable list items as list items
             * are showing incorrect data Add the solution if you have one
             * */

            ChatMessageObjects m = messagesItems.get(position);

            LayoutInflater mInflater = (LayoutInflater) context
                    .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

            if (messagesItems.get(position).getMessage_type() == Constants.IS_TYPE_CHAT_IMAGE) {
                convertView = mInflater.inflate(R.layout.chat_image,
                        null);

                ImageView imageView = (ImageView) convertView.findViewById(R.id.imgView);
                TextView imageLabel = (TextView) convertView.findViewById(R.id.lblImage);
                if (messagesItems.get(position).isSelf() == 0) {
                    Log.i(Constants.TAG, " the value is from others");
                    try {
                        URL url = new URL(messagesItems.get(position).getMessage());
                        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                        connection.setDoInput(true);
                        connection.connect();
                        InputStream input = connection.getInputStream();
                        imageView.setImageBitmap(BitmapFactory.decodeStream(input));
                    } catch (IOException e) {
                        Log.i(Constants.TAG, e.toString());
                    }
                } else if (messagesItems.get(position).isSelf() == 1) {
                    Log.i(Constants.TAG, " the value is itself");
                    imageView.setImageURI(Uri.fromFile(imgFile));
                    imageLabel.setText(messagesItems.get(position).getFromName());
                }
            } else if (messagesItems.get(position).getMessage_type() == Constants.MESSAGE_TYPE_MSG) {
                if (messagesItems.get(position).isSelf() == 1) {
                    // message belongs to you, so load the right aligned layout
                    convertView = mInflater.inflate(R.layout.chat_message_right,
                            null);
                    TextView txtMsg = (TextView) convertView.findViewById(R.id.txtMsg);
                    //date and time added here
                    TextView date = (TextView) convertView.findViewById(R.id.txtInfo);
                    txtMsg.setText(m.getMessage());
                    lblFrom.setText(m.getFromName());
                    date.setText(m.getDate());
                } else if (messagesItems.get(position).isSelf() == 0) {
                    // message belongs to other person, load the left aligned layout
                    convertView = mInflater.inflate(R.layout.chat_message_left,
                            null);
                    TextView txtMsg = (TextView) convertView.findViewById(R.id.txtMsg);
                    //date and time added here
                    TextView date = (TextView) convertView.findViewById(R.id.txtInfo);
                    txtMsg.setText(m.getMessage());
                    lblFrom.setText(m.getFromName());
                    date.setText(m.getDate());
                }

            }

            return convertView;
        }

日期.setText(m.getDate());代码以这种格式“28-aug-2015 11:46:11pm”获取我的日期。我需要将我的日期转换为这种格式“11:46 pm”，我该如何更改这种格式以及如何显示聊天消息以及时间，如上所示，请帮助我。

Answer 1

只需将您的 LinearLayout 方向从“垂直”更改为“水平”。

您可以使用 Time 来表示小时和分钟，如下所示:

    Time today = new Time(Time.getCurrentTimezone());
    today.setToNow();
    String timeInput = today.hour + ":" + today.minute;

更好的方法是使用 SimpleDateFormat:

    SimpleDateFormat s = new SimpleDateFormat("HH:mm a");
    String msgTime = s.format(new Date());

编辑:

Time today = new Time(Time.getCurrentTimezone());
today.setToNow();
String msgTime = today.format("HH:mm a")

使用此示例显示格式化的时间。