Question

我正在使用Firebase开发聊天应用。我想根据用户名更改row.xml文件中的线性布局的layout_gravity。

-1

row.xml

FirebaseListAdapter<ChatMessage> adapter = new     FirebaseListAdapter<ChatMessage>(
            this, ChatMessage.class, R.layout.row, recent
    ) {

        @Override
        protected void populateView(View view, ChatMessage chat, int i) {

            ((TextView) view.findViewById(R.id.nameTextView)).setText(chat.getName());
            ((TextView) [enter image description here][1]view.findViewById(R.id.messageTextView)).setText(chat.getMessage());
            ((TextView) view.findViewById(R.id.dateTextView)).setText(chat.getDate());
            Log.e("PopulateView", "Called");
            if (chat.getName().equals(UserName)){

                // Change layout_gravity to right

            }else{

                // Change layout_gravity to left

            }
        }
    };

activity_chat.xml

 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/chat_layout"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="2dp"
    android:layout_marginRight="2dp"
    android:layout_gravity="right"
    android:background="@drawable/out_message_bg"
    android:orientation="vertical">

    <TextView
        android:id="@+id/nameTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp"
        android:layout_marginTop="5dp"
        android:textColor="#ffffff"
        android:textSize="13sp" />

    <TextView
        android:id="@+id/messageTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:textColor="#ffffff"
        android:textSize="15sp"
        android:textStyle="italic" />

    <TextView
        android:id="@+id/dateTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="right"
        android:layout_marginRight="5dp"
        android:textAppearance="?android:attr/textAppearanceSmall" />

</LinearLayout>

Answer 1

试试这个将row.xml中layout_width的{{1}}设置为LinearLayout，它应该可以正常工作

match_parent

如何在firebase populateView中更改layout_gravity

1 个答案: