Question

在我的MainActivity中，我将4个cardViews制作为按钮，每个按钮都打开了一个Activity，但是现在我可以从设置中添加“ n”个新按钮（如尚未创建的按钮）并设置在BrowserView中打开的路径。

我的主要问题是我有一个xml文件，在其中创建了我在Main中使用的“ CardView”，其中包含ImageView，TextView，所以我如何以编程方式在MainActivity LinearLayout中设置它，甚至为每个TextView设置不同的文本“ n”个按钮。

这是我的MainActivity.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="#ffffff"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <android.support.v7.widget.CardView
        android:id="@+id/logo"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:cardCornerRadius="0dp"
        app:cardElevation="5dp"
        app:cardBackgroundColor="#00468a">

        <android.support.v7.widget.LinearLayoutCompat
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#00468a"
            android:orientation="vertical">

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="35dp"
                android:layout_gravity="start"
                android:layout_marginStart="5dp"
                android:adjustViewBounds="true"
                android:cropToPadding="false"
                android:scaleType="fitCenter"
                android:src="@drawable/realco"
                tools:ignore="ContentDescription" />

            <ImageView
                android:id="@+id/gab"
                android:layout_width="match_parent"
                android:layout_height="70dp"
                android:layout_marginBottom="5dp"
                android:layout_marginTop="5dp"
                android:adjustViewBounds="true"
                android:cropToPadding="false"
                android:padding="8dp"
                android:scaleType="fitCenter"
                android:src="@drawable/logo"
                tools:ignore="ContentDescription" />


        </android.support.v7.widget.LinearLayoutCompat>


    </android.support.v7.widget.CardView>



    <ScrollView
        android:id="@+id/scrollView"
        android:background="#ad00468a"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <android.support.v7.widget.CardView

                    android:id="@+id/orders"
                    app:cardCornerRadius="0dp"
                    android:layout_width="match_parent"
                    android:layout_height="0dp"
                    android:layout_weight="1"
                    app:cardBackgroundColor="#00468a"
                    app:cardElevation="15dp">


                    <android.support.v7.widget.LinearLayoutCompat
                        android:padding="20dp"
                        android:layout_width="match_parent"
                        android:layout_height="140dp"
                        android:background="#004181"
                        android:orientation="vertical">

                        <ImageView
                            android:layout_width="match_parent"
                            android:layout_height="70dp"
                            android:layout_gravity="start"
                            android:adjustViewBounds="true"
                            android:padding="5dp"
                            android:scaleType="fitCenter"
                            android:src="@drawable/order"
                            tools:ignore="ContentDescription" />

                        <TextView
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:gravity="center"
                            android:text="ORDINI"
                            android:textAlignment="center"
                            android:textColor="#ffffff"
                            android:textSize="18sp"
                            tools:ignore="HardcodedText" />


                    </android.support.v7.widget.LinearLayoutCompat>

                </android.support.v7.widget.CardView
                  >

                <android.support.v7.widget.CardView
                    android:id="@+id/inventario"
                    app:cardCornerRadius="0dp"
                    android:layout_width="match_parent"
                    android:layout_height="0dp"
                    android:layout_weight="1"
                    app:cardBackgroundColor="#001F54"
                    app:cardElevation="10dp">


                    <android.support.v7.widget.LinearLayoutCompat
                        android:layout_width="match_parent"
                        android:layout_height="140dp"
                        android:background="#001F54"
                        android:padding="20dp"
                        android:orientation="vertical">

                        <ImageView
                            android:layout_width="match_parent"
                            android:layout_height="70dp"
                            android:layout_gravity="start"
                            android:adjustViewBounds="true"
                            android:padding="5dp"
                            android:scaleType="fitCenter"
                            android:src="@drawable/storage"
                            tools:ignore="ContentDescription" />

                        <TextView
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:gravity="center"
                            android:text="INVENTARIO"
                            android:textAlignment="center"
                            android:textColor="#ffffff"
                            android:textSize="18sp"
                            tools:ignore="HardcodedText" />


                    </android.support.v7.widget.LinearLayoutCompat>

                </android.support.v7.widget.CardView>

                <android.support.v7.widget.CardView
                    android:id="@+id/prenotazioni"
                    android:layout_width="match_parent"
                    app:cardCornerRadius="0dp"
                    android:layout_height="0dp"
                    app:cardBackgroundColor="#0A1128"
                    android:layout_weight="1"
                    app:cardElevation="5dp">


                    <android.support.v7.widget.LinearLayoutCompat
                        android:layout_width="match_parent"
                        android:layout_height="140dp"
                        android:padding="20dp"
                        android:background="#0A1128"
                        android:orientation="vertical">

                        <ImageView
                            android:layout_width="match_parent"
                            android:layout_height="70dp"
                            android:layout_gravity="start"
                            android:adjustViewBounds="true"
                            android:padding="5dp"
                            android:scaleType="fitCenter"
                            android:src="@drawable/prenotazioni"
                            tools:ignore="ContentDescription" />

                        <TextView
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:gravity="center"
                            android:text="PRENOTAZIONI"
                            android:textAlignment="center"
                            android:textColor="#ffffff"
                            android:textSize="18sp"
                            tools:ignore="HardcodedText" />


                    </android.support.v7.widget.LinearLayoutCompat>

                </android.support.v7.widget.CardView>

                <android.support.v7.widget.CardView
                    android:visibility="gone"
                    android:id="@+id/btn1"
                    android:layout_width="match_parent"
                    app:cardCornerRadius="0dp"
                    android:layout_height="0dp"
                    app:cardBackgroundColor="#132150"
                    android:layout_weight="1"
                    app:cardElevation="5dp">


                    <android.support.v7.widget.LinearLayoutCompat
                        android:layout_width="match_parent"
                        android:layout_height="140dp"
                        android:padding="20dp"
                        android:background="#132150"
                        android:orientation="vertical">

                        <ImageView
                            android:layout_width="match_parent"
                            android:layout_height="70dp"
                            android:layout_gravity="start"
                            android:adjustViewBounds="true"
                            android:padding="5dp"
                            android:scaleType="fitCenter"
                            android:src="?android:attr/fastScrollThumbDrawable"
                            tools:ignore="ContentDescription" />

                        <TextView
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:gravity="center"
                            android:text="FTP"
                            android:textAlignment="center"
                            android:textColor="#ffffff"
                            android:textSize="18sp"
                            tools:ignore="HardcodedText" />


                    </android.support.v7.widget.LinearLayoutCompat>

                </android.support.v7.widget.CardView>

                <android.support.v7.widget.CardView
                    app:cardCornerRadius="0dp"
                    android:id="@+id/settings"
                    android:layout_width="match_parent"
                    android:layout_height="0dp"
                    android:layout_weight="1"
                    app:cardBackgroundColor="#232323"
                    app:cardElevation="2dp">

                    <android.support.v7.widget.LinearLayoutCompat
                        android:layout_width="match_parent"
                        android:layout_height="140dp"
                        android:padding="20dp"
                        android:background="#232323"
                        android:orientation="vertical">

                    <ImageView
                        android:layout_width="match_parent"
                        android:layout_height="70dp"
                        android:layout_gravity="start"
                        android:adjustViewBounds="true"
                        android:padding="7dp"
                        android:scaleType="fitCenter"
                        android:src="@drawable/settings"
                        tools:ignore="ContentDescription" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:gravity="center"
                        android:text="SETTINGS"
                        android:textAlignment="center"
                        android:textColor="#ffffff"
                        android:textSize="18sp"
                        tools:ignore="HardcodedText" />

                    </android.support.v7.widget.LinearLayoutCompat>


                </android.support.v7.widget.CardView>

            </LinearLayout>

    </ScrollView>






</LinearLayout>

这是button.xml

<android.support.v7.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/orders"
    app:cardCornerRadius="0dp"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1"
    app:cardBackgroundColor="#00468a"
    app:cardElevation="15dp">


    <android.support.v7.widget.LinearLayoutCompat
        android:padding="20dp"
        android:layout_width="match_parent"
        android:layout_height="140dp"
        android:background="#004181"
        android:orientation="vertical">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="70dp"
            android:layout_gravity="start"
            android:adjustViewBounds="true"
            android:padding="5dp"
            android:scaleType="fitCenter"
            android:src="@android:drawable/star_big_on"
            tools:ignore="ContentDescription" />

        <TextView
            android:id="@+id/textHERE"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center"
            android:text=""
            android:textAlignment="center"
            android:textColor="#ffffff"
            android:textSize="18sp"
            tools:ignore="HardcodedText" />


    </android.support.v7.widget.LinearLayoutCompat>

</android.support.v7.widget.CardView
    >

Answer 1

您可以使用View newView = LayoutInflater.from(context).inflate(resource_id, parentView);为新的xml充气。将返回结果强制转换为所需的任何类。使用要放入的布局作为父视图。然后，您可以在返回的视图上使用findViewById来查找子视图并设置其值。

Answer 2

这很容易

val inflater = context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
val view = inflater.inflate(R.layout.view_from_xml, null)

viewToAddView.add(view)

如何以编程方式将视图从XML添加到布局？

2 个答案: