Develop Reference

Background transition to remove corner radius

We have a linearlayout that has a background which is partially rounded (only the right side), at a determinate moment we need to migrate that background to a not rounded one, so I thought about using the TransitionDrawable, but for some reason this is not working. This are my files:
R.drawable.bg_right_rounded:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#color/blue" />
<padding android:left="0dip" android:top="0dip" android:right="10dip" android:bottom="0dip" />
<corners android:topLeftRadius="0dp" android:topRightRadius="10dp"
android:bottomLeftRadius="0dp" android:bottomRightRadius="10dp"/>
</shape>
R.drawable.bg_blue:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#color/blue" />
</shape>
R.drawable.bg_transition:
<?xml version="1.0" encoding="utf-8"?>
<transition xmlns:android=
"http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/bg_right_rounded"/>
<item android:drawable="#drawable/bg_blue"/>
</transition>
Then the layout is something like:
<LinearLayout
android:id="#+id/vg_chat_typer_inner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#drawable/bg_transition">
....
</LinearLayout>
Then at a given moment we do:
TransitionDrawable transition = (TransitionDrawable) layout.getBackground();
transition.startTransition(1000);
If I do it in a normal situation it works fine, but when I put that linearlayout inside another linear layout with another one, then it stops working. The situation where it fails is the following one:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:layout_alignParentBottom="true">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="horizontal"
android:background="#drawable/bg_transition">
....
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_weight="0">
....
</LinearLayout>
</LinearLayout>
Is it because of weight? Why is it not working?
Thanks in advance

set space between rows in listview Android

I have a listView with custom rows and I need to set a custom divider between each row.
This is the code of the listView:
<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="#dimen/menu_padding"
android:background="#color/customBlue"
android:divider="#drawable/list_divider"
android:dividerHeight="2px" />
This is the code of the rows:
<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="50dp"
android:orientation="horizontal"
tools:ignore="contentDescription"
android:background="#color/strongBlue" >
<ImageView
android:id="#+id/row_icon"
android:layout_width="50dp"
android:layout_height="50dp"
android:padding="10dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/row_title"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center_vertical"
android:padding="10dp"
android:textColor="#color/white"
android:textAppearance="#android:style/TextAppearance.Medium" />
</LinearLayout>
And this is the code for the 2 pixel divider:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:bottom="1px">
<shape android:shape="line">
<stroke
android:color="#0C0832"
android:width="2dp"
/>
<size
android:height="1px"
/>
</shape>
</item>
<item android:top="1px">
<shape android:shape="line">
<stroke
android:color="#2D2E57"
android:width="2dp"
/>
<size
android:height="1px"
/>
</shape>
</item>
</layer-list>
The problem is that I have a random space between each row that has the same color as the listView backgroundColor and if I set the dividerHeight to 4px I can see my divider. How can I remove the space that gets created automatically and only have my custom divider?

Use the following code in rows in linear layout
android:layout_marginTop="15dp"

Instead of pixel you can provide dp in xml
android:dividerHeight="10dp"
android:divider="#ffffff"
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="schemas.android.com/apk/res/android">;
<gradient
android:type="radial"
android:startColor="#343030"
android:endColor="#151515"
android:gradientRadius="300"
android:angle="270"
android:centerY="0.3"/>
</shape>
Instead of making custom drawable for divider you can directly give color to divider.

Strange Black border around drawable android XML

I am drawing custom header to input information in my app. I have drawn 2 shapes in xml and then positioned them in a layout. That layout is then put in my main layout using . However there is a black border that is drawn around each of the included headers. This seems to only be on api 21 devices. What is going on?
circle.xml
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/icon_background"
android:shape="oval">
<padding
android:left="2dp"
android:top="2dp"
android:right="2dp"
android:bottom="2dp" />
<solid
android:color="#color/color_primary"
android:angle="270">
</solid>
</shape>
line.xml
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="line">
<stroke android:width="5dp"
android:color="#color/color_primary"/>
<size android:height="10dp" />
</shape>
Header layout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_height="5dp"
android:layout_width="match_parent"
android:layout_alignParentStart="true"
android:layout_marginTop="14dp"
android:src="#drawable/line">
</ImageView>
<ImageView
android:id="#+id/circle"
android:layout_height="32dp"
android:layout_width="32dp"
android:src="#drawable/circle"
android:layout_centerHorizontal="true">
</ImageView>
<ImageView
android:id="#+id/header_icon"
android:layout_height="32dp"
android:layout_width="32dp"
android:src="#drawable/ic_action_car"
android:layout_centerHorizontal="true">
</ImageView>
</RelativeLayout>
Included layout
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/header_horizontal_margin"
android:paddingRight="#dimen/header_horizontal_margin"
android:paddingTop="#dimen/header_vertical_margin"
android:paddingBottom="#dimen/header_vertical_margin">
<include
android:id="#+id/carSpecs"
layout="#layout/header"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</include>
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/header_vertical_margin"
android:paddingBottom="#dimen/header_vertical_margin"
android:layout_gravity="center_horizontal"
android:id="#+id/vehicleSpinner"
android:layout_below="#+id/carSpecs"/> ...

Try to add this <solid android:color="#00FFFFFF"/> in your line.xml.

Remove this:
<stroke android:width="5dp"
android:color="#color/color_primary"/>
From line.xml
This is adding the extra "border", using the color_primary color resource as defined in your colors.xml.

Figured it out! Using same basis as #Der Golem I removed the
<size android:height="10dp" />
from the line.xml. Since the stroke was half of the size I was receiving the border. Thanks for the help all!

adding shadow on the bottom of List item of Listview

I want to add shadow to bottom of my ListView item !!
I tried paddingEdageLenght but no change happened !
I added circular edges but i can't add the shadow below the item
this is my list item xml file
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fadingEdgeLength="5sp" >
<ImageView
android:id="#+id/site_image"
android:layout_height="50dp"
android:layout_width="65dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_margin="10dp"/>
<TextView
android:id="#+id/site_name"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_toRightOf="#id/site_image"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:textSize="20sp"/>
<TextView
android:id="#+id/site_description"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_below="#id/site_name"
android:layout_marginTop="5dp"
android:layout_marginLeft="10dp"
android:layout_toRightOf="#id/site_image"
android:textSize="15sp"/>
</RelativeLayout>
and this is my ListView xml file
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ListView
android:id="#+id/near_sites"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_margin="10dp"
android:fadingEdgeLength="5sp"
android:dividerHeight="10sp"
android:divider="#android:color/transparent" />
</RelativeLayout>
any help ?

In list_view_item, add a dummy View after your RelativeLayout and wrap them all at vertical LinearLayout like this:
<LinearLayout
android:orientation="vertical">
<RelativeLayout>
...
...
</RelativeLayout>
<View
android:id="#+id/shadow"
android:layout_width="fill_parent"
android:layout_height="3dp" <!--or your needed height value-->
android:background="#drawable/shadow_drawable">
</View>
</LinearLayout>
and at drawable folder add the new shadow_drawable.xml and put this at it
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android=”http://schemas.android.com/apk/res/android”>
<gradient
android:startColor="#color/#000000" <!--black-->
android:endColor="#color/#FFFFFF" <!--white-->
android:angle="90" <!-- angle of the gradient-->
>
</gradient>
</shape>

you have to add footerview in listview,
how to add footerview check bellow code,
private View footerView;
footerView = ((LayoutInflater)getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.listview_footer, null, false);
ListView.addFooterView(footerView);
so, what ever you can do, in footer view.

You can make 9-patch image for border with shadow effect.
Create a new drawable resource file named "border.xml" in "res/drawable" and write the following code-
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item >
<shape
android:shape="rectangle">
<gradient android:startColor="#ddd" android:endColor="#555" android:type="linear" />
<corners android:radius="0dp"/>
</shape>
</item>
<item android:right=".5dp" android:left=".5dp" android:bottom="2dp" android:top=".5dp">
<shape
android:shape="rectangle">
<solid android:color="#android:color/white"/>
<corners android:radius="0dp"/>
</shape>
</item>
</layer-list>
Just put android:background="#drawable/border" where you want to apply border.
You can change in android:right,android:left,android:top and android:bottom to give size to border. you can also make change in android:shape for more effect.
Hope its help for you !

Adding rounded corners to a mapview

I'm trying to code a simple MapActivity which uses the following layout (only contains the mapview for the moment, as I plan to add share the screen with a ListView in the future) :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<com.google.android.maps.MapView
android:id="#+id/mapview"
android:layout_width="fill_parent"
android:layout_height="200dip"
android:enabled="true"
android:clickable="true"
android:apiKey="mykey"
android:layout_alignParentBottom="true" />
</RelativeLayout>
I have applied a simple shape to the mapview in order to have round corners and a stroke :
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:bottomRightRadius="10dp"
android:bottomLeftRadius="10dp"
android:topLeftRadius="10dp"
android:topRightRadius="10dp"/>
<stroke android:width="3dp"
android:color="#color/bordure_tables" />
</shape>
I use the following to apply the shape :
mapView.setBackgroundResource(R.layout.map);
Problem is that it does not have any effect and I can't see my rounded corners, nor the stroke.

Just wrote a tutorial to have rounded corners on a MapView it's done programmatically so should scale well to all devices:
http://www.anddev.org/novice-tutorials-f8/rounded-corners-map-view-t56908.html
Once you have added the custom view class you can just instantiate a rounded mapview like so:
<com.blundell.tut.ui.widget.RoundedMapView
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>

Have you tried assigning it a padding?
<padding
android:left="2dp"
android:top="2dp"
android:right="2dp"
android:bottom="2dp" />
So your strokes and radius should be visible.

So I've achieved this affect by doing following: I've created a 9-patch drawable called round_corners and placed it in my drawable folder, then I use following xml to plot the map:
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">/
<com.google.android.maps.MapView
android:id="#+id/center_map"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true"
android:apiKey="your_key"
/>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#drawable/round_corners"
></LinearLayout>
</FrameLayout>

I was able to achieve this creating a rounded drawable like this:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#android:color/transparent" />
<stroke android:width="10dp" android:color="#color/color_gray5_eeeeee" />
<corners android:radius="10px" />
</shape>
then using a linear layout and a margin of the same size of the drawable stroke width, like this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background_gray_rectangle_rounded_corners"
android:orientation="vertical">
<com.google.android.gms.maps.MapView
android:id="#+id/map_details_map_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:clickable="true"
android:enabled="true" />
</LinearLayout>

Just put the Mapview into a CardView
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="100dp"
android:elevation="0dp"
app:cardCornerRadius="5dp">
<com.google.android.gms.maps.MapView
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</android.support.v7.widget.CardView>