How to use syntethic properties when you have the same layout included twice

问题

Normally, when I need to include the same layout in one screen, I would wrap this layout in two different containers with a different id and call findViewById on those two parents but I don't know if and how I could achieve the same result with kotlin's syntethic properties. Just to be more clear:

I am in the situation where fragment_xyz.xml is composed like this:

<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical">

  <FrameLayout
    android:id="@+id/include1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/white">

    <include layout="@layout/item_detail" />
  </FrameLayout>

  <FrameLayout
    android:id="@+id/include2"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/white">

    <include layout="@layout/item_detail" />
  </FrameLayout>

</LinearLayout>

item_detail.xml'content is similar to the following:

<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical">

    <TextView
      android:id="@+id/title"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"/>

    <TextView
      android:id="@+id/description"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"/>

</LinearLayout>

And I would like to access those title and description with the usual:

import kotlinx.android.synthetic.main.item_detail.*

But I need to distinguish between the one inside FrameLayout include1 and FrameLayout include2

Thanks in advance!

Edit: typos.

回答1:

You need import: import kotlinx.android.synthetic.main.fragment_xyz.*

Then get the title and description from framelayout include1 and include2 like below:

val title1 by lazy {
    include1.title
}

val description1 by lazy {
    include1.description
}
val title2 by lazy {
    include2.title
}

val description2 by lazy {
    include2.description
}

来源：https://stackoverflow.com/questions/51845807/how-to-use-syntethic-properties-when-you-have-the-same-layout-included-twice

标签

android

kotlin-android-extensions