android cardview on lollipop not render - android

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)

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.

GridLayout not showing on my device

This is my xml code:
<ScrollView 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:fillViewport="true">
<GridLayout
android:id="#+id/mainGrid"
android:columnCount="2"
android:rowCount="3"
android:alignmentMode="alignMargins"
android:columnOrderPreserved="false"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="14dp"
>
<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"
app:cardElevation="8dp"
app:cardCornerRadius="8dp"
>
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/icona_monumenti"
android:layout_gravity="center_horizontal"
android:layout_width="100dp"
android:layout_height="100dp" />
<TextView
android:text="Me"
android:textAlignment="center"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</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_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp"
>
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/icona_piatti_tipici"
android:layout_gravity="center_horizontal"
android:layout_width="100dp"
android:layout_height="100dp" />
<TextView
android:text="Family"
android:textAlignment="center"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</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_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp"
>
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/icona_storia"
android:layout_gravity="center_horizontal"
android:layout_width="100dp"
android:layout_height="100dp" />
<TextView
android:text="Lovely"
android:textAlignment="center"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</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"
app:cardElevation="8dp"
app:cardCornerRadius="8dp"
>
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/icona_informazioni"
android:layout_gravity="center_horizontal"
android:layout_width="100dp"
android:layout_height="100dp" />
<TextView
android:text="Team"
android:textAlignment="center"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</android.support.v7.widget.CardView>
</GridLayout>
</ScrollView>
In the preview of my xml file, the GridLayout is visible, but when I run the application, on my phone the GridLayout is not visible.
gradle:
implementation 'com.android.support:cardview-v7:27.1.1'
The code don't give me error or other things, and the same the stack trace
This is the image of my layout:

What is the need of GridLayout here?
You can use nested LinearLayout this is the blue-print of that:
LinearLayout
(Vertical)
|
-------------------------
| |
LinearLayout LinearLayout
(Horizontal) (Horizontal)
| |
------------- -------------
| | | |
CardView CardView CardView CardView
And the code is:
<LinearLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
andriod:orientation="vertical">
<LinearLayout
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_weight="1"
andriod:orientation="horizontal">
<!--Row 1-->
<!--Column 1-->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/icona_monumenti"
android:layout_gravity="center_horizontal"
android:layout_width="100dp"
android:layout_height="100dp" />
<TextView
android:text="Me"
android:textAlignment="center"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</android.support.v7.widget.CardView>
<!-- Column 2 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/icona_piatti_tipici"
android:layout_gravity="center_horizontal"
android:layout_width="100dp"
android:layout_height="100dp" />
<TextView
android:text="Family"
android:textAlignment="center"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
<LinearLayout
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_weight="1"
andriod:orientation="horizontal">
<!-- Row 2 -->
<!-- Column 1 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/icona_storia"
android:layout_gravity="center_horizontal"
android:layout_width="100dp"
android:layout_height="100dp" />
<TextView
android:text="Lovely"
android:textAlignment="center"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</android.support.v7.widget.CardView>
<!-- Column 2 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/icona_informazioni"
android:layout_gravity="center_horizontal"
android:layout_width="100dp"
android:layout_height="100dp" />
<TextView
android:text="Team"
android:textAlignment="center"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
</LinearLayout>

Add a LinearLayout enclosing each element of the GridLayout
Making the width of the LinearLayout to "0dp".
Setting the width of the inner element to "match_parent"

GridView / CardView on click open new activity

My problem is that i cant manage to start new activity when clicking on CardView
GOAL: After clicking on the CardView, new activity should start.
I searched the forum and implemented different combinations with CardView/GridView but nothing works..
How to do it?
i have all in the LinearLayout
XML Code:
<RelativeLayout
android:layout_weight="2"
android:layout_width="match_parent"
android:layout_height="0dp">
<TextView
android:id="#+id/textGrid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Restaurant Menu"
android:textSize="34sp"
android:textColor="#android:color/white"/>
</RelativeLayout>
<GridLayout
android:columnCount="2"
android:rowCount="3"
android:alignmentMode="alignMargins"
android:columnOrderPreserved="false"
android:layout_weight="8"
android:layout_width="match_parent"
android:layout_height="0dp"
android:padding="14dp">
<!-- Row 1 -->
<!--Column 1 -->
<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"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/drinki"
android:layout_gravity="center_horizontal"
android:layout_width="55dp"
android:layout_height="55dp" />
<TextView
android:id="#+id/tview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Drinki i Koktaile"
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_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/piwo"
android:layout_gravity="center_horizontal"
android:layout_width="55dp"
android:layout_height="55dp" />
<TextView
android:id="#+id/tview2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Schłodzone Piwa"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
<!-- Row 2 -->
<!--Column 3 -->
<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"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/wino"
android:layout_gravity="center_horizontal"
android:layout_width="55dp"
android:layout_height="55dp" />
<TextView
android:id="#+id/tview3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Wytrawne Wina"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
<!--Column 4 -->
<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"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/sok"
android:layout_gravity="center_horizontal"
android:layout_width="55dp"
android:layout_height="55dp" />
<TextView
android:id="#+id/tview4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Tłoczone soki"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
<!-- Row 3 -->
<!--Column 5 -->
<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"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/gazowane"
android:layout_gravity="center_horizontal"
android:layout_width="55dp"
android:layout_height="55dp" />
<TextView
android:id="#+id/tview5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Napoje Gazowane"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
<!--Column 6 -->
<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"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:src="#drawable/cieplo"
android:layout_gravity="center_horizontal"
android:layout_width="55dp"
android:layout_height="55dp" />
<TextView
android:id="#+id/tview6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Gorące Napoje"
android:textColor="#android:color/black"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
</GridLayout>

Categories

Resources