Android: Cover underlying elevated views, and making a flat button

Android: Cover underlying elevated views, and making a flat button - android

Sorry for the elementary question but I can't find the solution:
When covering a button with a layout without elevation, it emerges over the layout because a button has a depth (negative depth, it points at the viewer).
So, if you have a
<FrameLayout... >
<Button.../>
<FrameLayout
id="#+id/fragmentsContainerOrAnything"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#C00F"
android:clickable="true"
android:focusable="true"
>
</FrameLayout>
</FrameLayout>
The button would show through the FrameLayout.... In this case, literally "out of the blue" because the button has depth and so it emerges over the layout, even though the layout is placed "upon" the button.
The question is:
How do I make the FrameLayout cover the underlying Button without fiddling with its elevation.
How do I make the button flat? Of course I can just set it back to the origins and call it "TextView". But is there a nicer way?
Thanks

Add your button inside FrameLayout
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#C00F"
android:clickable="true"
android:focusable="true" />
</FrameLayout>

Related

Homeup button on XML

How to achieve below type of UI, It has one home up button and and imageView. I don't want to use coordinate layout as this whole page scrolls up instead of collapsing image.
Home up button overlaps entire image

Did you try with linear layout only for that part.

You can try like this
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:layout_width="match_parent"
android:layout_height="200dp"
android:background="#drawable/profile_img" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/back_arrow" />
</FrameLayout>

Android: ListView pushes out everything else below it

In my app, there is a tabbed activity with three fragments. The first fragment has a form to create a new task, the second fragment has the list of all the saved tasks, and the third fragment will show the comments on a task when selected from the list in the second fragment. The third fragment is also supposed to act like a chat activity which posts comments when you type them in and tap the send button. The XML layout of this third fragment is as follows:
<?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"
android:background="#android:color/darker_gray"
android:orientation="vertical"
tools:context="com.example.ishita.assigntasks.CommentsFragment">
<TextView
android:id="#+id/frag_task_details"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#dd55ff"
android:padding="10dp" />
<ListView
android:id="#+id/frag_comment_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:transcriptMode="normal" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#android:color/white">
<EditText
android:id="#+id/frag_msg_edit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:inputType="textMultiLine"
android:layout_weight="1" />
<ImageButton
android:id="#+id/frag_send_btn"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:background="#android:color/background_light"
android:contentDescription="#string/send_btn"
android:src="#android:drawable/ic_menu_send" />
</LinearLayout>
</LinearLayout>
As you can see, there is a TextView and a ListView and below that is another LinearLayout. Here is how it should look (the purple bar is the TextView):
And here is how it actually looks:
The TextView shows up above the ListView, but the LinearLayout does not. It is there, though. If I do android:layout_marginBottom="20dp" on the outermost LinearLayout, it does show up, but the ActionBar scrolls up and overlaps with the notification bar so that the title on the ActionBar and the notifications on the notification bar are both visible simultaneously and neither is legible.
I searched a lot and this seemed a common issue, but none of the solutions helped me. Believe me, I tried everything I could find. I tried wrapping the whole thing in a FrameLayout, using a RelativeLayout in place of the outermost LinearLayout, using two LinearLayouts--one to wrap the TextView and the ListView and the other to wrap the EditText and the ImageButton, etc., but nothing was able to show the bottom LinearLayout below the ListView. I even tried to set focus on the EditText when the fragment launches so that the keyboard would show and I can type, but even that doesn't help.
Note: On the other hand, if I use the exact same layout on an activity, the bottom LinearLayout displays exactly as it should.
I am unable to find the bug. Please help!

It looks like your toolbar pushes fragment layout down without decreasing its height. I have no idea why this happens (there are no root layout code here).
As a workaround you can set fragments layout bottom margin to ?attr/actionBarSize

As you have given layout_weight 1 in listview layout, so it occupies the whole space available. In order to get rid of you have to give some static height or use layout_weight in right manner
<ListView
android:id="#+id/frag_comment_list"
android:layout_width="match_parent"
android:layout_height="500dp"
android:transcriptMode="normal" />
or try like this
<?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"
android:background="#android:color/darker_gray"
android:orientation="vertical"
tools:context="com.example.ishita.assigntasks.CommentsFragment">
<TextView
android:id="#+id/frag_task_details"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#dd55ff"
android:padding="10dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="vertical"
android:background="#android:color/white">
<ListView
android:id="#+id/frag_comment_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:transcriptMode="normal" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal"
android:background="#android:color/white">
<EditText
android:id="#+id/frag_msg_edit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:inputType="textMultiLine"
android:layout_weight="1" />
<ImageButton
android:id="#+id/frag_send_btn"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:background="#android:color/background_light"
android:contentDescription="#string/send_btn"
android:src="#android:drawable/ic_menu_send" />
</LinearLayout>
</LinearLayout>

All,
Thank you for all your responses. I found a workaround by trial and error now and thought I should post the answer for others who face the same issue. I set android:layout_marginBottom="50dp" on the inner LinearLayout (the one wrapping the comments bar--EditText and ImageButton). Somehow, this sets the layout correctly and the fragment functions properly in both Lollipop and Jellybean OS's. I haven't tested on other OS versions.

First of all you should read this, what is layout_weight and how it works.
You assigned layout_weight to ListView as 1, it means it covers whole height. just change it to 0.7 or any proportion you want (less than 1) will solve the problem.
<ListView
android:id="#+id/frag_comment_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.7"
android:transcriptMode="normal" />

Placing button to top of Map in Android

I currently have a map implemented in my Android application, and I'm having a bit of trouble trying to place a button at the top of it.
At the moment, this is how it is being displayed -
I want to prevent the button from being transparent, ideally I want it to appear like this below, or even have the button to span the width of the screen and stick to the top of the map -
Can anyone point me in the right direction in how to achieve the look in my second screenshot? Or even have the button across the top without being transparent, the map doesn't have to be in a frame or anything. Here is my code for the top screenshot -
<fragment 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"
android:id="#+id/map"
tools:context="com.example.pro.maps.MapsActivity"
android:name="com.google.android.gms.maps.SupportMapFragment">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Login"
android:id="#+id/btn_login"
android:layout_gravity="center_horizontal"/>
If anyone could help me I would appreciate it.

Nest the two views within a different layout such as a RelativeLayout. Take advantage of the alignParentTop, align_bottom, etc. properties.
<RelativeLayout
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" >
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Login"
android:id="#+id/btn_login"
android:layout_gravity="center_horizontal"
android:layout_alignParentTop="true"/>
<fragment
android:layout_below="#+id/btn_login"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/map"
tools:context="com.example.pro.maps.MapsActivity"
android:name="com.google.android.gms.maps.SupportMapFragment" />
</RelativeLayout>

CardView Scroll behavior when keyboard is up

Our app's main content is a RecylerView of CardView's. For signup we require more than just a username/password to create an account so we decided to make the signup flow out of CardView's to match the user experience once they sign up.
To do that I have a single Activity that animates fragments in from the bottom and existing fragments out the top to emulate scrolling. This fake scrolling occurs when the user enters data and hits next to advance. This works pretty well except for one case. When we have a EditText for input the keyboard comes up and covers the 'next' button on the bottom of the screen.
In our user testing we've noticed a high percentage of users trying to scroll the card up to get to the next button instead of dismissing the keyboard.
I've spent a lot of time unsuccessfully trying to get the CardView to scroll up to reveal the button and I'm out of ideas and looking for new ones.
The signup Activity layout only contains a FrameLayout that I load Fragments into. Each fragment that gets loaded has a CardView for the root layout.
In the manifest I have set the activity's windowsSoftInputMode to adjustResize, adjustPan with little success.
activity_signup.xml
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/signUpContent"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
simplified fragment_enter_code.xml
<android.support.v7.widget.CardView
style="#style/CardViewStyle.SignUp"
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="wrap_content"
app:cardCornerRadius="25dp"
app:cardElevation="2dp"
app:cardUseCompatPadding="true"
app:contentPadding="8dp">
<EditText
android:id="#+id/codeEditText"
style="#style/HintedEditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Code"
android:inputType="text"/>
<Button
style="#style/NextButton"
android:id="#+id/nextButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:enabled="false"
android:text="#string/next"/>
</android.support.v7.widget.CardView>
When I tried putting the CardView in a ScrollView the cardview layout (with fillViewport true), I get a scrollbar but the card doesn't scroll and the cardview layout gets messed up.
Does anyone know the windowSoftInputMode's well enough to point me in the right direction? Or is the CardView just not going to scroll outside of a Container that is design to hold them?
It feels like the solution to this is in manipulating the activity's view not the fragments.

I ended up creating a new app to just play around with this issue and noticed that if I had a layout that didn't contain a CardView whose root layout was a ScrollView it didn't scroll unless the activities windowSoftInputMode is set to adjustResize and then it will scroll.
I then made a layout with a <ScrollView><CardView><content...></CardView></ScrollView> and the size of the CardView was always the default row size for a card and wouldn't match_parent. I solved that with fillViewPort="true" on the ScrollView but when the keyboard came up it wouldn't scroll.
Turns out the secret sauce was to put a FrameLayout (or anyother layout) in between the CardView and the ScrollView.
You still have to account for the resize of the Layout to prevent your view elements not stacking over each other but Once you do that you now get the view above the soft keyboard to scroll and the ability to reach the rest of the UI with a CardView.
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:fillViewport="true">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:cardCornerRadius="35dp"
app:cardElevation="2dp"
app:cardUseCompatPadding="true"
app:contentPadding="8dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="200dp"
android:src="#drawable/common_ic_googleplayservices"/>
<EditText
android:id="#+id/input"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="50dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_below="#id/image"
android:hint="Input"
android:inputType="text"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/input"
android:orientation="vertical"
android:gravity="bottom|center_horizontal">
<Button
android:id="#+id/nextButton"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:enabled="false"
android:text="Next"/>
</LinearLayout>
</RelativeLayout>
</android.support.v7.widget.CardView>
</FrameLayout>
</ScrollView>

Layout issue with Android Studio

Recently picking up android development, I have hit a snag in the road. I'm having trouble positioning my layouts. Screenshots are as follows:
I'm trying to input either another layout type/list view in the upper section of the screen, without disrupting the button/text box at the bottom, though.. When extending this layout. I hit the following snag:
The entire contents of the original frame shift when the box of the new layout is extended, I've tried modifying:
android:layout_gravity="top">
and other layout attributes such as weight, margin, height/width.. This always hits the same problem.
My XML for this view is:
<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"
android:orientation="horizontal" >
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="483dp"
android:layout_weight="1.06"
android:layout_gravity="top">
</FrameLayout>
<EditText android:id="#+id/edit_message"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="#string/edit_message"
android:layout_gravity="bottom" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/button_send"
android:layout_gravity="bottom"
android:onClick="SendMessageButton"
/>
</LinearLayout>
Though, i'm some-what stuck on how to make the correct changes & any response to this question would be greatly appreciated!

At the moment, all your child views live inside a single horizontally-oriented LinearLayout. LinearLayouts always arrange views sequentially, as you are experiencing.
There are a couple different ways to achieve the layout you are looking for. I'm going to suggest one that uses nested LinearLayouts (an outer one to stack things vertically, and then a nested one to arrange the EditText and Button horizontally), but you could also consider using a RelativeLayout for this.
Updated layout:
<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"
android:orientation="vertical">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<EditText
android:id="#+id/edit_message"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="#string/edit_message" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/button_send"
android:onClick="SendMessageButton" />
</LinearLayout>
</LinearLayout>
Note that a LinearLayout is oriented horizontally by default; I have explicitly included the attribute here to make the structure more clear.

The reason, your button and editText is appearing far from the frame layout and not near the corner is the parent layout orientation is Horizontal.
Change it to Vertical.
Now, if you need your button and editText to be arranged in the same line, it should be mentioned as described in samgak answer.
However, i would like to suggest the following.
Using framelayout might create bad user experience across different screen sizes in android.
If the parent layout in Linear, if the screen size is x and all your components added if the height it takes is x-20, then the theme you set for parent layout would not cover the entire screen. Therefore, it is recommended to use RelativeLayout and for the button and editText, use the layout_alignParentBottom = true attribute.
If needed, i can share the code sample for this. Added Vertical Scroll to the layout.
<ScrollView 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"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="483dp"
android:layout_gravity="top">
</FrameLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<EditText android:id="#+id/edit_message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="Edit Message"
android:layout_gravity="bottom" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Send"
android:layout_gravity="bottom"
android:onClick="SendMessageButton"
/>
</LinearLayout>
</LinearLayout>
</ScrollView>

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.