Android GridView vertical borders

Android GridView vertical borders - android

I'm trying to get borders between my fragments showing in a GridView.
I setted the background color of the GridView to white and that of the fragments to black.
Then I inserted those code lines:
int border = 2; // px
view.setColumnWidth((dm.widthPixels / 2)-(4*border));
view.setNumColumns(2);
view.setHorizontalSpacing(border);
view.setVerticalSpacing(border);
view is my GridView.
The result is nice borders at the left of the whole GridView and between the fragments on top and at the bottom.
But between the both fragments on top there is no border.
Here is my declaration of the GridView:
<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/overview"
android:stretchMode="columnWidth"
android:clipChildren="true" >
</GridView>
May be somebody can help.
Greets

Well, what I was trying to explain in my earlier comment: in stead of having the GridView regulate the spacing you want, why don't you try to make the grid items take care of that? One easy solution for this is by setting an appropriate drawable as background to the layout file you're using in/passing into the GridView's adapter - in other words: the layout you use for your grid items, which in your case will be the fragments you mentioned.
A quick example:
Take a GridView:
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/gridview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#android:color/white"
android:numColumns="4" />
And an layout to be used for the item inside of it:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/grid_background"
android:gravity="center"
android:text="Text"
android:textColor="#android:color/white" />
And finally, the magic from a background drawable:
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<stroke android:width="5dp" android:color="#android:color/white" />
<padding android:bottom="5dp" android:left="5dp" android:right="5dp"
android:top="5dp" />
<solid android:color="#android:color/black" />
</shape>
The result will then be:
I'm not sure why the horizontal and vertical spacing parameters don't work for you, by the way. When I use those, I'm able to get an effect pretty similar to that in the image above:
GridView:
<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/gridview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#android:color/white"
android:horizontalSpacing="10dp"
android:numColumns="4"
android:verticalSpacing="10dp" />
Item layout (simply swapped out the earlier background resource for a fixed colour):
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/black"
android:gravity="center"
android:text="Text"
android:textColor="#android:color/white" />
Result:
Hope this will help you on your way.

Related

Dissolve a background drawable

I am trying to do something similar to this with the background image dissolving:
This is the code I'm using:
<LinearLayout
android:id="#+id/layout"
android:background="#color/yellow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizonal">
<ImageView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</LinearLayout>
I'm programmatically setting the background image like this:
((ImageView)findViewById(R.id.image)).setBackground(ContextCompat.getDrawable(this, R.drawable.bg_image);
If I had to guess, I need to set the opacity of the layout as it's not the image that is dissolving but the layout surrounding it. I've searched and I think I need to use setAlpha but I don't want the entire image transparent.

You can make use of Gradient in XML resource.
bg_gradient.xml
<?xml version="1.0" encoding="utf-8"?>
<shape android:shape="rectangle"
xmlns:android="http://schemas.android.com/apk/res/android">
<gradient
android:startColor="#color/blue"
android:endColor="#android:color/transparent"/>
</shape>
activity_main.xml
Set Image on the background layout and on top of that set gradient.
<LinearLayout
android:layout_width="match_parent"
android:layout_height="#dimen/dimen_200dp"
android:orientation="vertical"
android:background="#drawable/image"
app:layout_constraintTop_toBottomOf="#id/textView_version">
<LinearLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
android:background="#drawable/bg_gradient"/>
</LinearLayout>
Result

Impossible to add a footer to a ScrollView - android

I'm currently working on a mobile app and I have a problem when I try to put a footer under a Scroll View.
Here is my code:
<RelativeLayout
android:id="#+id/RelativeLayout01"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<RelativeLayout
android:layout_alignParentBottom="true"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/bottomcontent"
android:orientation="vertical"
android:background="#drawable/border">
//the footer is added dynamically
</RelativeLayout>
<ScrollView
android:layout_weight="1"
android:id="#+id/scroller"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/contentcontainer">
<LinearLayout
android:id="#+id/scrollcontentcontainer"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
//the content is added dynamically from a layout template
</LinearLayout>
</LinearLayout>
</ScrollView>
</RelativeLayout>
The content of the scrollview is a set of relative layout with some buttons and textviews inside. It's based on a layout I'm inflating several times.
The footer is just a linearlayout with some buttons in it as well.
The thing is I tried all the different solutions I found on Internet and none of them were working. In my case the footer is stuck under the content of the scrollView, not under the scrollview itselfm so I have to scroll down until the content is over to reach my footer. But the footer is supposed to remain on the bottom of the screen...
I tried those solutions as well, nothing was working:
- http://www.javacodegeeks.com/2013/10/android-fixed-header-and-footer-with-scrollable-content-layout-example.html
(when I try this I have a footer on the top of the screen and nothing else...)
- http://www.byteslounge.com/tutorials/android-fixed-header-and-footer-with-scrollable-content-layout-example
and some others (not working as well!)
I also tried all the possible things like using gravity, weight, fillViewPort, align to the bottom... But impossible to have the expected result.
The minimum API is set to 14, I use android studio.
Thanks for help guys!
edit1 :
border drawable
`enter code here
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:bottom="-2dp"
android:left="-2dp"
android:right="-2dp"
android:top="2dp">
<shape android:shape="rectangle" >
<stroke
android:width="1dp"
android:color="#000000" />
<solid android:color="#3b010101" />
<padding android:left="10dp"
android:right="10dp"
android:top="10dp"
android:bottom="10dp" />
</shape>
</item>
</layer-list>

You can try the following, I also had troubles with adding ScrollView inside a RelaveLayout.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<RelativeLayout
android:id="#+id/bottomcontent"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#drawable/border">
<!---add something there eg:-->
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Test"/>
</RelativeLayout>
<ScrollView
android:id="#+id/scroller"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="#id/bottomcontent"
android:layout_alignParentTop="true">
<LinearLayout
android:id="#+id/contentcontainer"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:id="#+id/scrollcontentcontainer"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
</LinearLayout>
</ScrollView>
</RelativeLayout>
.
I found the following in this documentation. This is causing the problem for sure
Note: In platform version 17 and lower, RelativeLayout was affected by
a measurement bug that could cause child views to be measured with
incorrect MeasureSpec values. (See MeasureSpec.makeMeasureSpec for
more details.) This was triggered when a RelativeLayout container was
placed in a scrolling container, such as a ScrollView or
HorizontalScrollView. If a custom view not equipped to properly
measure with the MeasureSpec mode UNSPECIFIED was placed in a
RelativeLayout, this would silently work anyway as RelativeLayout
would pass a very large AT_MOST MeasureSpec instead.
This behavior has been preserved for apps that set
android:targetSdkVersion="17" or older in their manifest's uses-sdk
tag for compatibility. Apps targeting SDK version 18 or newer will
receive the correct behavior

Android button background shape: circle is squished

fragment_camera.xml:
<?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">
<ImageView
android:id="#+id/iv_camera"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true" >
</ImageView>
<Button
android:id="#+id/btn_take_pic"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="20dp"
android:background="#drawable/circle" >
</Button>
</RelativeLayout>
circle.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid
android:color="#87cefa"/>
<size
android:width="40dp"
android:height="40dp"/>
</shape>
Result:
My circle is squished *cry*.
As the button does not contain any content I'm guessing the button has a default width and height. How can I get the button to adjust itself to the drawable? Must I set the width and height the same dimensions as the drawable, or is there a dynamic way of doing this?

Stop crying. Use a compound drawable.
It would be drawableLeft for occidental people, or drawableRight for mid-oriental people (it really depends on how you want your image and text to be related - you can even use both of them).
http://developer.android.com/guide/topics/ui/controls/button.html

How to add (vertical) divider to a horizontal LinearLayout?

I'm trying to add a divider to a horizontal linear layout but am getting nowhere. The divider just doesn't show. I am a total newbie with Android.
This is my layout XML:
<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"
tools:context=".MainActivity" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/llTopBar"
android:orientation="horizontal"
android:divider="#00ff00"
android:dividerPadding="22dip"
android:showDividers="middle">
<Button
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="asdf" />
<Button
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="asdf" />
</LinearLayout>
</RelativeLayout>

use this for horizontal divider
<View
android:layout_width="1dp"
android:layout_height="match_parent"
android:background="#color/honeycombish_blue" />
and this for vertical divider
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#color/honeycombish_blue" />
OR if you can use the LinearLayout divider, for horizontal divider
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<size android:height="1dp"/>
<solid android:color="#f6f6f6"/>
</shape>
and in LinearLayout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="#drawable/divider"
android:orientation="vertical"
android:showDividers="middle" >
If you want to user vertical divider then in place of android:height="1dp" in shape use android:width="1dp"
Tip: Don't forget the android:showDividers item.

Try this, create a divider in the res/drawable folder:
vertical_divider_1.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<size android:width="1dip" />
<solid android:color="#666666" />
</shape>
And use the divider attribute in LinearLayout like this:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="48dp"
android:orientation="horizontal"
android:divider="#drawable/vertical_divider_1"
android:dividerPadding="12dip"
android:showDividers="middle"
android:background="#ffffff" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>
Note: android:divider is only available in Android 3.0 (API level 11) or higher.

It is easy to add divider to layout, we don't need a separate view.
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:divider="?android:listDivider"
android:dividerPadding="2.5dp"
android:orientation="horizontal"
android:showDividers="middle"
android:weightSum="2" ></LinearLayout>
Above code make vertical divider for LinearLayout

Update: pre-Honeycomb using AppCompat
If you are using the AppCompat library v7 you may want to use the LinearLayoutCompat view. Using this approach you can use drawable dividers on Android 2.1, 2.2 and 2.3.
Example code:
<android.support.v7.widget.LinearLayoutCompat
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:showDividers="middle"
app:divider="#drawable/divider">
drawable/divider.xml: (divider with some padding on the top and bottom)
<?xml version="1.0" encoding="UTF-8"?>
<inset xmlns:android="http://schemas.android.com/apk/res/android"
android:insetBottom="2dp"
android:insetTop="2dp">
<shape>
<size android:width="1dp" />
<solid android:color="#FFCCCCCC" />
</shape>
</inset>
Very important note: The LinearLayoutCompat view does not extend LinearLayout and therefor you should not use the android:showDividers or android:divider properties but the custom ones: app:showDividers and app:divider. In code you should also use the LinearLayoutCompat.LayoutParams not the LinearLayout.LayoutParams!

I just ran into the same problem today. As the previous answers indicate, the problem stems from the use of a color in the divider tag, rather than a drawable. However, instead of writing my own drawable xml, I prefer to use themed attributes as much as possible. You can use the android:attr/dividerHorizontal and android:attr/dividerVertical to get a predefined drawable instead:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:showDividers="middle"
android:divider="?android:attr/dividerVertical"
android:orientation="horizontal">
<!-- other views -->
</LinearLayout>
The attributes are available in API 11 and above.
Also, as mentioned by bocekm in his answer, the dividerPadding property does NOT add extra padding on either side of a vertical divider, as one might assume. Instead it defines top and bottom padding and thus may truncate the divider if it's too large.

You can use the built in divider, this will work for both orientations.
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="?android:attr/listDivider"
android:orientation="horizontal"
android:showDividers="middle">

Frustratingly, you have to enable showing the dividers from code in your activity. For example:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Set the view to your layout
setContentView(R.layout.yourlayout);
// Find the LinearLayout within and enable the divider
((LinearLayout)v.findViewById(R.id.llTopBar)).
setShowDividers(LinearLayout.SHOW_DIVIDER_MIDDLE);
}

If the answer of Kapil Vats is not working try something like this:
drawable/divider_horizontal_green_22.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<size android:width="22dip"/>
<solid android:color="#00ff00"/>
</shape>
layout/your_layout.xml
LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/llTopBar"
android:orientation="horizontal"
android:divider="#drawable/divider_horizontal_green_22"
android:showDividers="middle"
>
I encountered an issue where the padding attribute wasn't working, thus I had to set the height of the divider directly in the divider.
Note:
If you want to use it in vertical LinearLayout, make a new one, like this:
drawable/divider_vertical_green_22.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<size android:height="22dip"/>
<solid android:color="#00ff00"/>
</shape>

Your divider may not be showing due to too large dividerPadding. You set 22dip, that means the divider is truncated by 22dip from top and by 22dip from bottom. If your layout height is less than or equal 44dip then no divider is visible.

In order to get drawn, divider of LinearLayout must have some height while ColorDrawable (which is essentially #00ff00 as well as any other hardcoded color) doesn't have. Simple (and correct) way to solve this, is to wrap your color into some Drawable with predefined height, such as shape drawable

You have to create the any view for separater like textview or imageview then set the background for that if you have image else use the color as the background.
Hope this helps you.

Border with title around a LinearLayout

I want to make a border with a title around a LinearLayout like on this picture.
layout http://img829.imageshack.us/img829/3461/borderwithtitel.png
I already have the border.
How can I add the title?
I created the border by making an .xml file in the drawable folder. There I made a shape and then I set the background of the linear layout as this shape.
I am using API Level 8.

According to #Radu's answer,you can see an example:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:color="#000000">
<View
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/rectangle"
android:layout_margin="20dp"
/>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="#000000"
android:layout_marginTop="10dp"
android:text="TITLE!"
android:textColor="#ffffff"/>
</RelativeLayout>
</FrameLayout>
And #drawable/rectangle is in a drawable rectangle.xml file like this:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#android:color/transparent"/>
<stroke android:width="2dip" android:color="#ffffff"/>
</shape>

You may want to take a look at the Android Frame Layout.
A good tutorial may be found here or you may want to read the dev guides.

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.

Android GridView vertical borders - android

Related

Dissolve a background drawable

Impossible to add a footer to a ScrollView - android

Android button background shape: circle is squished

How to add (vertical) divider to a horizontal LinearLayout?

Border with title around a LinearLayout

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