Develop Reference

Why can't I see the right side of my activity on my phone?

I'm trying to code an app for a school project. I'm stuck with the design. I can't see the right side of my activity on my phone, but it's appearing on the Android Studio preview. It's possible that my code isn't right or that i've didn't respect something.
And here are the 2 screenshots:
Android Studio Preview:
https://pasteboard.co/I6uT89f.png
Phone view:
https://pasteboard.co/I6uSgpW.jpg
Here's the code:
activity_main.xml
<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:background="#color/colorPrimaryDark"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
</android.support.design.widget.AppBarLayout>
<include
android:id="#+id/include"
layout="#layout/content_main" />
<com.leinardi.android.speeddial.SpeedDialOverlayLayout
android:id="#+id/overlay"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:backgroundTint="#131313"/>
<com.leinardi.android.speeddial.SpeedDialView
android:id="#+id/speedDial"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
app:sdMainFabClosedSrc="#drawable/ic_menu"
app:sdOverlayLayout="#id/overlay"/>
</android.support.design.widget.CoordinatorLayout>
content_main.xml
<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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".MainActivity"
tools:showIn="#layout/activity_main">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical"
android:paddingBottom="5dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="340dp"
android:layout_centerInParent="true"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/header2"
android:scaleType="fitCenter"
android:layout_marginTop="-20dp"/>
</RelativeLayout>
<RelativeLayout
android:clickable="true"
android:focusable="true"
android:id="#+id/plante1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerVertical="true"
android:background="#drawable/ripple"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="-10dp"
android:layout_marginBottom="15dp"
android:gravity="center">
<RelativeLayout
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_marginLeft="10dp"
android:background="#drawable/logo_shape">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
android:orientation="vertical">
<fr.visufo.titouan.jardin.UnderlinedTextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="80dp"
android:layout_marginTop="0dp"
android:gravity="left"
android:text="Plante 1"
android:textSize="20dp"
android:fontFamily="#font/raleway_light"
android:textColor="#000000"
app:underlineColor="#6DB85C"
app:underlineWidth="10px"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="80dp"
android:layout_marginTop="30dp"
android:textSize="15dp"
android:textColor="#000000"
android:text="Pensez à rentrer votre plante demain"
android:fontFamily="#font/raleway_light"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="335dp"
android:layout_marginRight="7dp"
android:layout_marginTop="-4dp"
android:background="#drawable/degrees_shape">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="0°C"
android:gravity="center"
android:fontFamily="#font/roboto"
android:textSize="18dp"
android:textColor="#636363"/>
</RelativeLayout>
</RelativeLayout>
There are 8 similar relative layouts showing quite the same thing, here's
only one
</LinearLayout>
</ScrollView>

#titouan-pellerin - Unlike using div as a container for (most) things as in Website Design, you don't need to be repeatedly wrapping each individual view inside of it's own layout..For Example, if I wanted to my activity to vertically show something like this:(Title)(some smaller subtext)(An Image)(Some Description text)(And two buttons at the bottom)..I wouldn't wrap each of these things individually in their own layout - I would simply create 1 base layout (to act as the main container), and then inside of it, I would create 1 vertical layout for the content (arranged vertically), and 1 horizontal layout for the Buttons at the bottom (arranged horizontally).Of course you will also want to set your margins according to how you want everything displayed.You are most likely experiencing issues due to a mixture of margins getting added together over and over again and expanding past the screen's boundaries, combined with the fact that the phone is likely of different pixel density and resolution compared to the emulator.Step 1: Fix your Layout, as I described above.Step 2: Choose/Setup an Emulator that matches your Device most closely in Resolution/PixelDensity.Hope this helps!If you found this to be a good explanation, please accept this as the answer to your question.Thanks, and happy coding!

android: Displaying multiple images like INSIDE the Tinder-cards

How would I go about displaying multiple images the way Tinder does it: it should display the next image when I click on the right side of the image and display the previous image when I click on the left side of the image.
It should also display a little arrow to the right or left only when clicked and show somehow which picture is being displayed (with little bars like tinder or dots or something).
Is there a library for that?
EDIT:
To clarify: I already implemented the Tinder swipe-cards with the help of the Diolor/Swipecards library. What I'm suprisingly a little stuck with is implementing the image gallery INSIDE the Tinder swipecards. Only the part seen in the picture above.

There are a lot of libraries to it for you
https://github.com/janishar/PlaceHolderView
https://github.com/yuyakaido/CardStackView
https://github.com/Ivaskuu/tinder_cards
https://github.com/Yalantis/Koloda-Android

My solution was adding two pictures of arrows, putting two layouts above them, then adding onClickListeners for the Layouts, which select the next/previous picture in the adapter to be displayed in the ImageView.
The layout .xml file:
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:clipToPadding="false"
android:outlineProvider="bounds"
android:paddingLeft="10sp"
android:paddingTop="10sp"
android:paddingRight="10sp"
android:paddingBottom="100sp">
<android.support.v7.widget.CardView
android:id="#+id/cardView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:elevation="2dp"
app:cardCornerRadius="4dp">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:orientation="vertical">
<ImageView
android:id="#+id/imageViewMainBackground"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#mipmap/ic_user_default" />
<ImageView
android:id="#+id/imageNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|end"
android:scaleType="centerCrop"
android:src="#drawable/outline_keyboard_arrow_right_black_48" />
<ImageView
android:id="#+id/imagePrevious"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:scaleType="centerCrop"
android:src="#drawable/outline_keyboard_arrow_left_black_48" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1">
<LinearLayout
android:id="#+id/previousLayout"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".50"
android:orientation="horizontal" />
<LinearLayout
android:id="#+id/nextLayout"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_gravity="end"
android:layout_weight=".50"
android:orientation="horizontal" />
</LinearLayout>
<TextView
android:id="#+id/nameTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:padding="20sp"
android:shadowColor="#color/colorBlack"
android:shadowRadius="20"
android:textColor="#color/colorWhite"
android:textSize="30sp"
tools:text="hello" />
<ImageView
android:id="#+id/infoImageViewItemCard"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:scaleType="centerCrop"
android:padding="20sp"
android:shadowColor="#color/colorBlack"
android:shadowRadius="20"
android:src="#drawable/outline_info_white_48" />
<LinearLayout
android:id="#+id/bottomLayout"
android:layout_width="match_parent"
android:layout_height="110dp"
android:layout_gravity="bottom"
android:orientation="horizontal" />
</FrameLayout>
</android.support.v7.widget.CardView>
</LinearLayout>

RecyclerView fill empty space inside LinearLayout

Background
I have a header and footer (LinearLayout) with a RecyclerView between them.
The problem
I need that the footer stay fixed at the bottom of the screen and the RecyclerView fills the empty space
What I've tried
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/constraintLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical"
tools:context="br.com.sigane.coletordifal.activity.EnderecamentoActivity">
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Header" />
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/produtos_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical" />
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Footer" />
</LinearLayout>
</LinearLayout>
Also tried to use ConstraintLayout, but without success

Try this
Add android:layout_height="0dp" and android:layout_weight="1" to the RecyclerView
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/constraintLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Header" />
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/produtos_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:scrollbars="vertical" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Footer" />
</LinearLayout>
</LinearLayout>

I don't think you need to have separate linear layouts. I think just one is enough. Just set your weights like this for your recyclerview and footer.
<android.support.v7.widget.RecyclerView
android:id="#+id/produtos_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:scrollbars="vertical" />
<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1"
android:text="Footer" />

I recommend using the constraint layout, it is a FrameLayout on steroids. If you are using android studio 3.2, right-clicking on the root element in the design view shows a menu with the option "convert to constraintlayout"
The reason you do not want to nest layouts like this, Each nested element results in additional measure passes, nested layouts are messy and harder to inflate than flat layouts.
Highly recommend spending an hour or so reading about the constraint layout and how to use it. You will not regret it, helped my improve productivity by 2x.
Hope this is helpful.

Recyclerview in scrollview

This is the code :
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/grey_f2"
android:fillViewport="true"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/rv_achievement_badges"
android:focusableInTouchMode="false"
/>
<LinearLayout
android:background="#color/white"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="25dp"
>
<com.sharesmile.share.views.LBTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hall_of_fame"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:textColor="#color/black_64"
android:textSize="20sp"
/>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/rv_hall_of_fame"
android:focusableInTouchMode="false"
/>
</LinearLayout>
</LinearLayout>
</ScrollView>
The issue is rv_hall_of_fame does not show all items.
tried nestedsrollview, viewport, canScrollVertically and setNestedScrollingEnabled and nothing is working. Can you let me know.

You should remove the second recyclerview from the linearlayout. Maybe that is the reason you can't see all items.
EDIT:
I think you should use NestedScrollView. I had the same problem in one of my projects and I changed my code to below which solved my problem.
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/grey_f2"
android:fillViewport="true"
android:focusableInTouchMode="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/rv_achievement_badges"/>
<com.sharesmile.share.views.LBTextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/hall_of_fame"
android:layout_marginTop="10dp"
android:textColor="#color/black_64"
android:textSize="20sp"
android:background="#color/white"
android:paddingLeft="25dp"
android:paddingTop="36dp"/>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/rv_hall_of_fame"
android:background="#color/white"
android:layout_marginBottom="7dp"
android:paddingBottom="30dp"
android:paddingTop="30dp"
android:paddingLeft="25dp"
android:paddingRight="25dp"/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>

It's not wise to put a RecyclerView or a ListView inside a ScrollView. Android doesn't know how to handle user events. In addition, in your case, you have two RecyclerView inside that root ScrollView... It's madness both for the Android UI framework and for the user.
A solution could be to only use one RecyclerView that handles the scroll user action, and an Adapter that knows how to render everything you use: achievements badges, the hall of fame label, and the players. So, you'll only need one RecyclerView, and it will work like a charm.

Resize views on Soft Keyboard launch

I am trying to create a chat application. The chat layout currently looks like this
The corresponding layout file is
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:fillViewport="true"
android:layout_height="match_parent">
<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"
tools:context="com.example.nirmal.chatadapter.MainActivity">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary">
<de.hdodenhof.circleimageview.CircleImageView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/profile_image"
android:layout_width="40dp"
android:layout_height="wrap_content"
android:src="#drawable/iconuser"
app:civ_border_width="2dp"
app:civ_border_color="#color/White"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginStart="#dimen/marginLeftForToolbar"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/White"
android:text="UserName Here"
android:layout_marginTop="#dimen/marginTopBottomForBubble"
android:id="#+id/user_name"
android:textSize="#dimen/textMedium"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/White"
android:text="User details Here"
android:layout_marginTop="#dimen/marginTopBottomForBubble"
android:id="#+id/user_details"
android:textSize="#dimen/textSmall"/>
</LinearLayout>
</android.support.v7.widget.Toolbar>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/toolbar"
android:layout_marginTop="#dimen/recyclerViewMargin"
android:isScrollContainer="true"
android:id="#+id/chatRecycler"
android:layout_above="#+id/chatBoxAndSend">
</android.support.v7.widget.RecyclerView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:orientation="horizontal"
android:layout_marginBottom="5dp"
android:id="#+id/chatBoxAndSend">
<EditText
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:minWidth="50dp"
android:maxWidth="50dp"
android:id="#+id/chatBox"
android:paddingStart="#dimen/cardViewPadding"
android:background="#drawable/rounded_chat_box"
android:layout_margin="#dimen/marginForChatBox"
/>
<Button
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:background="#drawable/oval_button"
android:minWidth="50dp"
android:maxWidth="50dp"
android:text="Send"
android:imeOptions="flagNoExtractUi"
android:id="#+id/chatSendButton"
android:layout_margin="#dimen/marginForChatBox"
android:textColor="#color/Black"
/>
<!--<ImageView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.1"
android:id="#+id/send_button"
android:src="#drawable/send"
android:background="#drawable/oval_button"
android:layout_marginBottom="#dimen/marginForChatBox"
android:layout_marginTop="#dimen/marginForChatBox"
android:layout_marginEnd="#dimen/marginForChatBox"
/>
<de.hdodenhof.circleimageview.CircleImageView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.1"
android:id="#+id/send_button"
android:src="#drawable/send"
app:civ_border_width="2dip"
android:layout_marginEnd="#dimen/marginForChatBox"
app:civ_border_color="#color/greenChatColor"/>-->
</LinearLayout>
</RelativeLayout>
</ScrollView>
When I open my soft keyboard the layout looks likes this
I have added this in my manifest file
android:windowSoftInputMode="adjustPan|stateHidden"
The output is not what I expected it to be. I want the recyclerview to dynamically resize in the center of the screen and the Toolbar and the edittext to stay fully visible.
As you can see the toolbar has been pushed up and is not visible even when scrolled. The edittext is hidden partially by the suggestions given by the keyboard. Some of the posts I saw asked me to add a scrollview which I did and still the same result. How can I solve this problem?

If you want to resize RecyclerView on SoftInput open or close then you can use below single line code
((LinearLayoutManager)myRecyclerView.getLayoutManager()).setStackFromEnd(true);
For more read this post: https://trinitytuts.com/tips/resize-recyclerview-on-android-softinput-keyboard-appear/
Hope this code helps you

The flag adjustPan is wrong. Use the adjustResize instead:
android:windowSoftInputMode="adjustResize|stateHidden"
What adjustPan does is equivalent to enlarging a picture more than the screen and then panning - i.e. moving the picture so you see different parts of it. (like a map in google map for instance).