android - Coordinator Layout and Relative Layout issue -
when create blank activity in android studio, given layout:
<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.coordinatorlayout 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:fitssystemwindows="true" tools:context="com.example.mainactivity"> <android.support.design.widget.appbarlayout android:layout_width="match_parent" android:layout_height="wrap_content" android:theme="@style/apptheme.appbaroverlay"> <android.support.v7.widget.toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionbarsize" android:background="?attr/colorprimary" app:popuptheme="@style/apptheme.popupoverlay" /> </android.support.design.widget.appbarlayout> <include layout="@layout/content_main" /> <android.support.design.widget.floatingactionbutton android:id="@+id/fab" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|end" android:layout_margin="@dimen/fab_margin" android:src="@android:drawable/ic_dialog_email" /> </android.support.design.widget.coordinatorlayout> and relative layout (@layout/content_main) goes out of screen:
if set button in relative layout, layout_alignparentbottom button go out of screen. (it doesn't happen time, have no idea why)
@layout/content_main
<?xml version="1.0" encoding="utf-8"?> <relativelayout 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" app:layout_behavior="@string/appbar_scrolling_view_behavior" tools:context="com.example.mainactivity" tools:showin="@layout/activity_main"> <button android:id="@+id/button" android:layout_alignparentbottom="true" android:layout_width="match_parent" android:layout_height="70dp" android:background="@color/green" android:textcolor="@color/white" android:text="text" android:focusable = "true" android:focusableintouchmode = "true" /> </relativelayout> adding padding bottom relative layout won't work. (as it'll work when button off screen)
i need button @ bottom of screen always. can tell me how achieve this?
like this:
try following code, keep button @ end without going out of view:
<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.coordinatorlayout 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:fitssystemwindows="true" tools:context="com.example.android.myapplication.mainactivity"> <android.support.design.widget.appbarlayout android:layout_width="match_parent" android:layout_height="wrap_content" android:theme="@style/apptheme.appbaroverlay"> <android.support.v7.widget.toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionbarsize" android:background="?attr/colorprimary" app:popuptheme="@style/apptheme.popupoverlay" /> </android.support.design.widget.appbarlayout> <android.support.design.widget.floatingactionbutton android:id="@+id/fab" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|end" android:layout_margin="@dimen/fab_margin" android:src="@android:drawable/ic_dialog_email" /> <button android:id="@+id/btn" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="bottom" /> </android.support.design.widget.coordinatorlayout> and relative layout (@layout/content_main) goes out of screen:
edit: think that's because you've set them match_parent.try this:
<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.coordinatorlayout 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:fitssystemwindows="true" tools:context="com.example.mainactivity"> <android.support.design.widget.appbarlayout android:id="@+id/app_bar" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@android:color/transparent" android:fitssystemwindows="true" android:theme="@style/themeoverlay.appcompat.dark.actionbar"> <android.support.design.widget.collapsingtoolbarlayout android:id="@+id/collapsing_toolbar" android:layout_width="match_parent" android:layout_height="300dp" android:background="@color/colorprimary" android:fitssystemwindows="true" app:contentscrim="?attr/colorprimary" app:layout_scrollflags="scroll|exituntilcollapsed"> <android.support.v7.widget.toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionbarsize" android:background="?attr/colorprimary" app:popuptheme="@style/apptheme.popupoverlay" /> </android.support.design.widget.collapsingtoolbarlayout> </android.support.design.widget.appbarlayout> <android.support.design.widget.floatingactionbutton android:id="@+id/fab" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|end" android:layout_margin="@dimen/fab_margin" android:src="@android:drawable/ic_dialog_email" /> <relativelayout android:layout_width="match_parent" android:layout_height="wrap_content"> <button android:id="@+id/button" android:layout_width="match_parent" android:layout_height="70dp" android:layout_alignparentbottom="true" android:background="@color/coloraccent" android:focusable="true" android:focusableintouchmode="true" android:text="text" android:textcolor="@android:color/white" /> </relativelayout> </android.support.design.widget.coordinatorlayout> 
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