以编程方式设置位图时，如何让 imageView 和 textview 填充布局？

Question

What I want is for qrcodetext to fit and display all the text in qrcode_layout and have qrimageView to fill the rest of qrcode_layout ? But my layout below has the entire qrimageView cover qrcode_layout . I tried a bunch of other variations but without success.

Here is what it looks like.

Here is what I want it to look like.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:orientation="vertical"
        android:id="@+id/qrcodelayout">

        <LinearLayout
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:orientation="vertical">
            <ImageView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@+id/qrimageView"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="8dp" />

        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/qrcodetext"
            android:gravity="center"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="4dp" />

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"/>
    </LinearLayout>

</RelativeLayout>

Answer 1

I think what i have understand you want is below: Plz check and tell me:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:orientation="vertical"
        android:id="@+id/qrcodelayout">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:id="@+id/qrcodetext"
            android:gravity="center"            
            android:layout_weight="1"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="4dp" />
        <LinearLayout
            android:layout_height="match_parent"
            android:layout_width="match_parent"
            android:orientation="vertical"
            android:layout_weight="1">
            <ImageView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@+id/qrimageView"                
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="8dp" />

        </LinearLayout>



    </LinearLayout>

    <!--<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"/>
    </LinearLayout>-->

</RelativeLayout>

Answer 2

Use following code. Align your textview to bottom and then align your Qrcode Image above text:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">        
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/qrcodetext"
        android:gravity="center"
        android:layout_alignParentBottom="true"
        android:layout_marginTop="4dp" />        
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/qrimageView"
        android:layout_gravity="center_horizontal"
        android:layout_above="@id/qrcodetext"
        android:layout_alignParentTop="true"
        android:layout_marginTop="8dp" />
</RelativeLayout>