How can I eliminate the excessive white areas in my Cardview? - android

I'm trying to create an Android Recipe App. So I have difficulty in designing the layout of the file. I want to display 4 options to the user (Breakfast, Lunch, Dinner and Dessert). I have used a Gridlayout to display each of them. I have displayed each of them in a CardView in Gridlayout. But the problem I came across is that each Card stretches vertically and there is an excess amount of white space.
Click here to see image
https://i.stack.imgur.com/kcscz.png
What I want to achieve is Square shaped CardViews instead of rectangular ones. The one I want to achieve is similar to this image.
https://i.stack.imgur.com/t5RW7.png
I have attached my code below
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<androidx.appcompat.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize">
<RelativeLayout
android:gravity="center_vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:text="#string/app_name"
android:textSize="24sp"
android:gravity="center"
android:textStyle="bold"
android:textColor="#color/black"
android:layout_alignParentStart="true"
android:layout_marginStart="8dp"
android:layout_width="wrap_content"
android:layout_height="match_parent"/>
</RelativeLayout>
</androidx.appcompat.widget.Toolbar>
<GridLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="8"
android:rowCount="2"
android:alignmentMode="alignMargins"
android:columnOrderPreserved="false"
android:columnCount="2"
android:padding="14dp">
<!-- Row 1-->
<!-- Column 1-->
<androidx.cardview.widget.CardView
android:layout_height="0dp"
android:layout_width="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#drawable/breakfast"
android:adjustViewBounds="true"
android:layout_gravity="center_horizontal"/>
<TextView
android:text="BreakFast"
android:textAlignment="center"
android:textColor="#color/black"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- Column 2-->
<androidx.cardview.widget.CardView
android:layout_height="0dp"
android:layout_width="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#drawable/breakfast"
android:adjustViewBounds="true"
android:layout_gravity="center_horizontal"/>
<TextView
android:text="BreakFast"
android:textAlignment="center"
android:textColor="#color/black"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:layout_height="0dp"
android:layout_width="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#drawable/breakfast"
android:adjustViewBounds="true"
android:layout_gravity="center_horizontal"/>
<TextView
android:text="BreakFast"
android:textAlignment="center"
android:textColor="#color/black"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:layout_height="0dp"
android:layout_width="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#drawable/breakfast"
android:adjustViewBounds="true"
android:layout_gravity="center_horizontal"/>
<TextView
android:text="BreakFast"
android:textAlignment="center"
android:textColor="#color/black"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
</GridLayout>
</LinearLayout>```
Please give me some advise on this.

Related

Layout stretched when setting GridLayout in a ScrollView

I'm trying to put a grid layout in a scroll view but when i put the grid layout in the scrollview all the card inside the grid are stretched like the scroll doesnt get the match parent..
How could i fix that problem?
When i set it normally in the ConstraintLayout all is shown properly.
Here is how it looks like:
While my XML code is the following:
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/triangle_background"
tools:context=".HomeActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:weightSum="10">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2">
<TextView
android:id="#+id/textBenvenuto"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Benvenuto"
android:textColor="#ffffff"
android:textSize="34sp" />
</RelativeLayout>
<GridLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="8"
android:alignmentMode="alignMargins"
android:columnCount="2"
android:columnOrderPreserved="false"
android:padding="14dp"
android:rowCount="3">
<!-- Row 1 -->
<!-- Column 1 -->
<androidx.cardview.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:clickable="true"
android:focusable="true"
android:foreground="?attr/selectableItemBackground"
app:cardBackgroundColor="#FFFFFF"
app:cardCornerRadius="3dp"
app:cardElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:gravity="center_horizontal|center_vertical"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="80dp"
android:layout_gravity="center_horizontal"
app:srcCompat="#drawable/ic_inventory" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Inventario"
android:textAlignment="center"
android:textColor="#3D5AFE"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- Column 2 -->
<androidx.cardview.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:clickable="true"
android:focusable="true"
android:foreground="?attr/selectableItemBackground"
app:cardBackgroundColor="#FFFFFF"
app:cardCornerRadius="3dp"
app:cardElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:gravity="center_horizontal|center_vertical"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="80dp"
android:layout_gravity="center_horizontal"
app:srcCompat="#drawable/ic_price_tag" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Verifica Prezzo"
android:textAlignment="center"
android:textColor="#3D5AFE"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- Row 2 -->
<!-- Column 1 -->
<androidx.cardview.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:clickable="true"
android:focusable="true"
android:foreground="?attr/selectableItemBackground"
app:cardBackgroundColor="#FFFFFF"
app:cardCornerRadius="3dp"
app:cardElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:gravity="center_horizontal|center_vertical"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="80dp"
android:layout_gravity="center_horizontal"
app:srcCompat="#drawable/ic_warehouse" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Lotti"
android:textAlignment="center"
android:textColor="#3D5AFE"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- Column 2 -->
<androidx.cardview.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:clickable="true"
android:focusable="true"
android:foreground="?attr/selectableItemBackground"
app:cardBackgroundColor="#FFFFFF"
app:cardCornerRadius="3dp"
app:cardElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:gravity="center_horizontal|center_vertical"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="80dp"
android:layout_gravity="center_horizontal"
app:srcCompat="#drawable/ic_delivery_truck" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Ordini"
android:textAlignment="center"
android:textColor="#3D5AFE"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- Row 3 -->
<!-- Column 1 -->
<androidx.cardview.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:clickable="true"
android:focusable="true"
android:foreground="?attr/selectableItemBackground"
app:cardBackgroundColor="#FFFFFF"
app:cardCornerRadius="3dp"
app:cardElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:gravity="center_horizontal|center_vertical"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="80dp"
android:layout_gravity="center_horizontal"
app:srcCompat="#drawable/ic_check_list" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Riepilogo Oridni"
android:textAlignment="center"
android:textColor="#3D5AFE"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- Column 2 -->
<androidx.cardview.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:clickable="true"
android:focusable="true"
android:foreground="?attr/selectableItemBackground"
app:cardBackgroundColor="#FFFFFF"
app:cardCornerRadius="3dp"
app:cardElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:gravity="center_horizontal|center_vertical"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="80dp"
android:layout_gravity="center_horizontal"
app:srcCompat="#drawable/ic_timing_belt" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Impostazioni"
android:textAlignment="center"
android:textColor="#3D5AFE"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</androidx.cardview.widget.CardView>
</GridLayout>
</LinearLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>

Okay you need to add this line android:fillViewport="true" in you scrollview
ScrollView should be like this
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">

How to implement Gridlayout/cardview on API 22 and lower?

My program works perfectly find on Api 23 and above. but for some reason when I run it on lower api [22 or lower ], it sometimes display blank page and sometimes the cardviews are all over the place.
here are some screenshots of my program on api 16 and 23 respectively.
Note: I misspelled "Unknown" on the screenshot lol.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="10"
tools:context=".MainActivity"
android:background="#ffff">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1.5"
android:layout_marginTop="0dp"
>
<TextView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="App Name goes here"
android:autoSizeTextType="uniform"
android:textStyle="bold"
android:textColor="#fbe9e7"
android:background="#B32EC1"
android:padding="10dp"/>
</RelativeLayout>
<GridLayout
android:columnCount="2"
android:rowCount="3"
android:alignmentMode="alignMargins"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="8"
android:padding="14dp"
android:alpha="0.8">
<!-- card view -->
<androidx.cardview.widget.CardView
android:id="#+id/pra"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
app:cardCornerRadius="8dp"
app:cardMaxElevation="8dp"
android:background="#ffff">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Unkown"
android:textAlignment="center"
android:textSize="20sp"
android:textColor="#000"
android:textStyle="bold"
/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:src="#ffff"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- card view -->
<androidx.cardview.widget.CardView
android:id="#+id/flash_card"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
app:cardCornerRadius="8dp"
app:cardMaxElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Unkown"
android:textAlignment="center"
android:textSize="20dp"
android:textStyle="bold"
android:textColor="#000"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:src="#ffff"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- card view-->
<androidx.cardview.widget.CardView
android:id="#+id/allInOne"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
app:cardCornerRadius="8dp"
app:cardMaxElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Unkown"
android:textAlignment="center"
android:textSize="20dp"
android:textStyle="bold"
android:textColor="#000"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:src="#fff"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
<!--card view -->
<androidx.cardview.widget.CardView
android:id="#+id/prog"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
app:cardCornerRadius="8dp"
app:cardMaxElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Unkown"
android:textAlignment="center"
android:textSize="20dp"
android:textStyle="bold"
android:textColor="#000"
/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:src="#fff"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- card view -->
<androidx.cardview.widget.CardView
android:id="#+id/officials"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
app:cardCornerRadius="8dp"
app:cardMaxElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="16dp"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Unkown"
android:textAlignment="center"
android:textColor="#000"
android:textSize="20dp"
android:textStyle="bold" />
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:src="#ffff"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- card view -->
<androidx.cardview.widget.CardView
android:id="#+id/setting"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
app:cardCornerRadius="8dp"
app:cardMaxElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Unknown"
android:textAlignment="center"
android:textSize="20dp"
android:textStyle="bold"
android:textColor="#000" />
<ImageView
android:id="#+id/practice_tv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:src="#ffff"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
</GridLayout>
</LinearLayout>

Why are the drawables not appearing in card view for grid layout?

I started learning grid view recently, but I cannot find the images from the drawable appearing on the cards. A white background is appearing on these cards instead. How can I make the drawable images appear ? I will also attach the screen shot of the activity right now.enter image description here This is my XML Code.
<?xml version="1.0" encoding="utf-8"?>
<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"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:weightSum="10"
tools:context=".Main2Activity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<TextView
android:id="#+id/textGrid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:fontFamily="serif-monospace"
android:text="#string/grid"
android:textAlignment="center"
android:textAllCaps="false"
android:textColor="#android:color/black"
android:textSize="34sp"
android:textStyle="bold" />
</RelativeLayout>
<GridLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="9"
android:alignmentMode="alignMargins"
android:columnCount="2"
android:columnOrderPreserved="false"
android:padding="14dp"
android:rowCount="3">
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_rowWeight="1"
android:elevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:contentDescription="#string/name1"
android:src="#drawable/mechanic" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/mechanic"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_rowWeight="1"
android:elevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_gravity="center_horizontal"
android:contentDescription="#string/name2"
android:src="#drawable/doctor" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/doctor"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:elevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical"
android:layout_margin="16dp"
android:layout_gravity="center_horizontal|center_vertical">
<ImageView
android:layout_height="0dp"
android:layout_width="0dp"
android:layout_gravity="center_horizontal"
android:contentDescription="#string/name3"
android:src="#drawable/electrician" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/electrician"
android:textAlignment="center"
android:textSize="18sp"
android:textColor="#android:color/black"
android:textStyle="bold"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:elevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical"
android:layout_margin="16dp"
android:layout_gravity="center_horizontal|center_vertical">
<ImageView
android:layout_width="0dp"
android:layout_height="0dp"
android:src="#drawable/plumber"
android:layout_gravity="center_horizontal"
android:contentDescription="#string/name4" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/plumber"
android:textAlignment="center"
android:textSize="18sp"
android:textColor="#android:color/black"
android:textStyle="bold"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:elevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical"
android:layout_margin="16dp"
android:layout_gravity="center_horizontal|center_vertical">
<ImageView
android:layout_height="0dp"
android:layout_width="0dp"
android:src="#drawable/driver"
android:layout_gravity="center_horizontal"
android:contentDescription="#string/name5"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/driver"
android:textAlignment="center"
android:textSize="18sp"
android:textColor="#android:color/black"
android:textStyle="bold"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:elevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical"
android:layout_margin="16dp"
android:layout_gravity="center_horizontal|center_vertical">
<ImageView
android:layout_height="0dp"
android:layout_width="0dp"
android:src="#drawable/hospital"
android:layout_gravity="center_horizontal"
android:contentDescription="#string/name6"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hospital"
android:textAlignment="center"
android:textSize="18sp"
android:textColor="#android:color/black"
android:textStyle="bold"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</GridLayout>
</LinearLayout>

It's because of setting ImageView height and width to 0dp. Set them to wrap_content or size that you want. Also set the LinearLayout height and width to match_parent.

android cardview on lollipop not render

I have try with the following code. It works well in android 6(marshmallow) and above, but only it doesn't work in android 5(lollipop). Can anyone please help?
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawerLayoutSetting"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/bgred"
android:orientation="vertical"
tools:context="com.example.heng.fyp_recompile.SettingActivity">
<android.support.constraint.ConstraintLayout
android:id="#+id/linearLayoutCompatSetting"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/testSetting"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="44dp"
android:fontFamily="serif-monospace"
android:text="Setting"
android:textColor="#ffffff"
android:textSize="50sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<GridLayout
android:id="#+id/mainGrid"
android:layout_width="344dp"
android:layout_height="398dp"
android:layout_weight="8"
android:alignmentMode="alignMargins"
android:columnCount="2"
android:columnOrderPreserved="false"
android:padding="14dp"
android:rowCount="3"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/testSetting">
<!-- Row 1 -->
<!-- Column 1 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_rowWeight="1"
app:cardCornerRadius="8dp"
app:cardElevation="8dp"
app:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:src="#drawable/ic_my_location_black_24dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Set Home"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
<!-- Column 2 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_rowWeight="1"
app:cardCornerRadius="8dp"
app:cardElevation="8dp"
app:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:src="#drawable/ic_lock_black_24dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Reset Pin"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
<!-- Row 2 -->
<!-- Column 1 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_rowWeight="1"
app:cardCornerRadius="8dp"
app:cardElevation="8dp"
app:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:src="#drawable/ic_contact_phone_black_24dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Set Contact"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
<!-- Column 2 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_rowWeight="1"
app:cardCornerRadius="8dp"
app:cardElevation="8dp"
app:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:src="#drawable/ic_lock_black_24dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Reset Password"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
</GridLayout>
</android.support.constraint.ConstraintLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation_view_setting"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#D0312D"
app:itemTextColor="#ffffff"
app:menu="#menu/navigation_menu"
app:headerLayout="#layout/navigation_header"
app:theme="#style/NavigationViewTextSize">
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
The image attach was the appropriate layout with android 6(Marshmallow)
This image show none cardview is render in android 5(lollipop)
This image show appropriate layout on android 6(marshmallow)

Scroll view not working with Grid view and linear layout

I've been trying to implement a scroll view into my existing code however when i attempt to do so, the app crashes. I have tried to add a linear view first, then the scroll view but i don't think i have done this correctly. I think there is an error with the layout weights but I'm not too sure. Any help at all would be much appreciated.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="none">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2">
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="59dp"
android:layout_marginStart="59dp"
android:layout_marginTop="16dp"
android:textSize="20sp"
android:textStyle="bold" />
</RelativeLayout>
<GridLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="8"
android:alignmentMode="alignMargins"
android:columnCount="2"
android:columnOrderPreserved="false"
android:padding="14dp"
android:rowCount="3">
<!--Row 1 -->
<!--column 1 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_rowWeight="1"
app:cardCornerRadius="8dp"
app:cardElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:background="#color/colorTextHint"
android:src="#drawable/logo" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ME"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold"
/>
</LinearLayout>
</android.support.v7.widget.CardView>
<!--Row 1 -->
<!--column 2 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_rowWeight="1"
app:cardCornerRadius="8dp"
app:cardElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:src="#drawable/logo" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ME"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold"
/>
</LinearLayout>
</android.support.v7.widget.CardView>
</GridLayout>
</ScrollView>
</LinearLayout>

Your ScrollView contains several children objects, but it can only contain one children object. However, these children's objects may in turn receive children's objects.
Hope that helps you and I have made no mistake now.
edit:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="59dp"
android:layout_marginStart="59dp"
android:layout_marginTop="16dp"
android:text="23452345345edfsdf"
android:textSize="20sp"
android:textStyle="bold" />
</RelativeLayout>
<GridLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alignmentMode="alignMargins"
android:columnCount="2"
android:columnOrderPreserved="false"
android:padding="14dp"
android:rowCount="3">
<!--Row 1 -->
<!--column 1 -->
<android.support.v7.widget.CardView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_columnWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_rowWeight="1"
app:cardCornerRadius="8dp"
app:cardElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:src="#mipmap/ic_launcher" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ME"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
<!--Row 1 -->
<!--column 2 -->
<android.support.v7.widget.CardView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_columnWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_rowWeight="1"
app:cardCornerRadius="8dp"
app:cardElevation="8dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:src="#mipmap/ic_launcher" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ME"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
</GridLayout>
</LinearLayout>
</ScrollView>

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