Android recycvler view layout mismatch between preview and actual layout -
i'm working on graduation work , prior including custom toolbar (for hamburger icon) , replacing listview navigationview drawerlayout menu items i've had no problems layouts @ all. preview , desired, expected result recyclerview
and actual view on android device (letv x800 api21 if matters @ all) 
as can see gap between consecutive items huge , don't know source of problem. i'm using single activity xml contains frame container desired layouts loaded. fragment_car_cost.xml
<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:fab="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/car_cost_view" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="left" android:orientation="vertical"> <space android:layout_width="match_parent" android:layout_height="15dp" android:id="@+id/space"/> <android.support.v7.widget.recyclerview android:id="@+id/car_cost_entry_recycler_view" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginleft="16dp" android:layout_marginright="16dp" android:layout_below="@id/space" app:layoutmanager="linearlayoutmanager" tools:listitem="@layout/item_car_cost"> </android.support.v7.widget.recyclerview> <com.github.clans.fab.floatingactionmenu android:id="@+id/car_cost_floating_action_menu" android:layout_width="match_parent" android:layout_height="wrap_content" fab:menu_animationdelayperitem="55" fab:menu_backgroundcolor="@android:color/transparent" fab:menu_buttonspacing="0dp" fab:menu_colornormal="#da3c2f" fab:menu_colorpressed="#dc4b3f" fab:menu_colorripple="#99d4d4d4" fab:menu_fab_label="opcje" fab:menu_fab_size="normal" fab:menu_icon="@drawable/fab_add" fab:menu_labels_colornormal="#333" fab:menu_labels_colorpressed="#444" fab:menu_labels_colorripple="#66efecec" fab:menu_labels_cornerradius="3dp" fab:menu_labels_ellipsize="none" fab:menu_labels_hideanimation="@anim/fab_slide_out_to_right" fab:menu_labels_margin="0dp" fab:menu_labels_maxlines="-1" fab:menu_labels_padding="8dp" fab:menu_labels_position="left" fab:menu_labels_showanimation="@anim/fab_slide_in_from_right" fab:menu_labels_showshadow="true" fab:menu_labels_singleline="false" fab:menu_labels_textcolor="#f2f1f1" fab:menu_labels_textsize="15sp" fab:menu_opendirection="up" fab:menu_shadowcolor="#66aff198" fab:menu_shadowradius="4dp" fab:menu_shadowxoffset="1dp" fab:menu_shadowyoffset="4dp" fab:menu_showshadow="true" android:layout_alignparentbottom="true" android:layout_alignstart="@+id/car_cost_entry_recycler_view"> <com.github.clans.fab.floatingactionbutton android:id="@+id/btn_car_costs_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@android:drawable/ic_input_add" fab:fab_label="@string/add" fab:fab_size="mini" /> <com.github.clans.fab.floatingactionbutton android:id="@+id/btn_car_costs_statistics" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@android:drawable/ic_menu_my_calendar" fab:fab_label="@string/statistics" fab:fab_size="mini" /> <com.github.clans.fab.floatingactionbutton android:id="@+id/btn_car_costs_charts" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@android:drawable/btn_dropdown" fab:fab_label="@string/charts" fab:fab_size="mini" /> </com.github.clans.fab.floatingactionmenu> </relativelayout> activity_main.xml
<?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" android:id="@+id/layout_drawer" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <relativelayout android:layout_width="match_parent" android:layout_height="match_parent" > <android.support.v7.widget.toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="wrap_content" /> <framelayout android:id="@+id/main_frame" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@id/toolbar" /> </relativelayout> <android.support.design.widget.navigationview android:id="@+id/navigation_view" android:layout_width="240dp" android:layout_height="match_parent" android:layout_gravity="left" app:headerlayout="@layout/navigation_header" app:menu="@menu/menu_navigation" /> </android.support.v4.widget.drawerlayout> and recycler view item:
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:card_view="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/car_cost_header" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginbottom="7sp" android:orientation="horizontal" android:weightsum="1"> <android.support.v7.widget.cardview xmlns:card_view="http://schemas.android.com/apk/res-auto" android:id="@+id/car_cost_entry_card_view" android:layout_width="match_parent" android:layout_height="wrap_content" card_view:cardcornerradius="2dp" card_view:cardelevation="4dp"> <relativelayout android:layout_width="match_parent" android:layout_height="wrap_content"> <imageview android:id="@+id/cost_type_image_view" android:layout_width="75sp" android:layout_height="75sp" android:src="@android:drawable/ic_menu_today" android:longclickable="true"/> <textview android:id="@+id/car_cost_entry_date_text_view" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_torightof="@id/cost_type_image_view" android:text="17.08.2017 17:20" android:textappearance="?android:attr/textappearancemedium" /> <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/car_cost_entry_date_text_view" android:layout_toendof="@+id/cost_type_image_view" android:text="typ: paliwo" android:textappearance="?android:attr/textappearancemedium" android:id="@+id/car_cost_entry_type_text_view" /> <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="koszt: 666,66zł" android:textappearance="?android:attr/textappearancemedium" android:layout_below="@+id/car_cost_entry_type_text_view" android:layout_toendof="@+id/cost_type_image_view" android:id="@+id/car_cost_entry_cost_text_view"/> <imageview android:id="@+id/cost_details_image_view" android:layout_width="wrap_content" android:layout_height="40sp" android:src="@android:drawable/ic_menu_delete" android:clickable="true" android:layout_alignparentright="true" /> </relativelayout> </android.support.v7.widget.cardview> </linearlayout>
change main linearlayout height wrap_content in recyclerview item layout
<linearlayout ... ... android:layout_width="match_parent" android:layout_height="wrap_content" ... ... >
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