I have a button that is clear with a white border, and when tapped it becomes light grey. My issue is this transition is instant and quite jarring to see. I want to learn how to smoothly flow from the one color to the other.
I have an XML file that has my button properties:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape android:shape="rectangle">
<corners android:radius="250px" />
<padding android:left="100px" android:right="100px" />
<stroke android:color="#cecece" android:width="15px" />
</shape>
</item>
<item>
<shape android:shape="rectangle">
<corners android:radius="250px" />
<padding android:left="100px" android:right="100px" />
<stroke android:color="#color/colorWhite" android:width="15px" />
</shape>
</item>
Then the activity's button has the XML file as the background.
You can use animated-selector instead of plain selector. And control the animation through alpha property.
Related
I set the Root Layout background as black colour with corner radius and padding. I set the child layout background as white colour only so the corners seems to be removed. I mean it white colour as overlay of the black. I found one solution for this i.e., we should maintain one more xml like root layout background. Is there any good solution instead of this?
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<solid android:color="#color/black_color" />
<corners android:radius="10dp" />
<padding
android:bottom="2dp"
android:left="2dp"
android:right="2dp"
android:top="2dp" />
</shape>
You need to create another XML file for the white background and give corner top radius to left-right only. And apply this background to the child view.
try this or a modification of this.Just modify the lines and other things as you need it.I needed a black bar at the top.I just modified that to white for your use.But you will still ahve trim your image to be smaller than the overall border.
what if you put your image as
android:scaleX="0.95"
android:scaleY="0.95"
the drawable code:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:bottom="40dp">
<shape android:shape="rectangle" >
<solid android:color="#FFFFFF" />
<corners android:radius="20dp" />
<stroke
android:width="1dp"
android:color="#7F7F7F" />
</shape>
</item>
<item android:top="40dp">
<shape android:shape="rectangle" >
<solid android:color="#FFFFFF" />
<corners android:radius="20dp" />
<stroke
android:width="1dp"
android:color="#7F7F7F" />
</shape>
</item>
<item
android:bottom="40dp"
android:left="1dp"
android:right="1dp"
android:top="24dp">
<shape android:shape="rectangle" >
<solid android:color="#FFFFFF" />
</shape>
</item>
</layer-list>
Here when i pressed on these left and right arrow button at that time I want to see these type of effects on button. These same thing happens in Iphone/IOS by default.
Can i make this type of effect?
Here i mentioned the pic what exactly i want.
Here i used this xml files but didnt got success.
button_pressed.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"><shape>
<gradient android:angle="180" android:centerColor="#657377" android:endColor="#AFFFFFFF" android:startColor="#FFFFFFFF" android:type="linear"/>
<corners android:radius="10dp" />
</shape></item>
</selector>
EDIT
I used android:background="#drawable/button_pressed.xml" line but i did not got which i want Exactly.
Tried :
I used this xml file as per Piyush's Answer but i didnt get success and i am getting this effect.
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle" >
<solid android:color="#color/transparent" />
</shape>
</item>
<item>
<shape
android:innerRadiusRatio="4"
android:shape="ring"
android:thicknessRatio="9"
android:useLevel="false" >
<gradient
android:endColor="#00000000"
android:gradientRadius="250"
android:startColor="#ffffffff"
android:type="radial" />
</shape>
</item>
</layer-list>
I agreed top and bottom part cuts because i have limited space in layout for this button. that we will think later but why its not taking effect like shadow and alpha and all that same like which i mentioned?
OUTPUT :
Please help me If any body has idea about this.
Thanks in Advance.
The shape has to be radially drawn with fading from white to black outwards.
Try this:
<shape
xmlns:android="http://schemas.android.com/apk/res/android">
<gradient
android:startColor="#ffffffff"
android:endColor="#00000000"
android:gradientRadius="100"
android:type="radial"/>
</shape>
Also, you cannot directly set this as a background to your button. You will have to create a selector drawable file in which you specify different backgrounds based on the state of the button. In this case, you need this background to be set only when button is pressed. The selector will look something like this:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="#drawable/button_pressed"/>
<item android:state_selected="true" android:drawable="#drawable/button_pressed"/>
<item android:state_focussed="true" android:drawable="#drawable/button_pressed"/>
<item android:drawable="#android:color/transparent" />
</selector>
PS: It is not recommended to replicate iOS design when designing an Android app. For Android design guidelines, please refer: http://developer.android.com/design/building-blocks/buttons.html
can try this regarding for circular shape, can set your colors accordingly.
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle" >
<solid android:color="#color/transparent" />
</shape>
</item>
<item>
<shape
android:shape="ring"
android:useLevel="false" >
<gradient
android:endColor="#00000000"
android:gradientRadius="200"
android:startColor="#ffffffff"
android:type="radial" />
</shape>
</item>
I have some buttons which I set its background color as red, green and blue separately. When I press the button, click event is generated, but there is no change in gui for the user to know the button is pressed. Android button’s default background grayish color changes to orange and come back to grayish color after releasing the pressed state. How to implement this on colored button?
That is implemented via a StateListDrawable, represented by selector in XML. Reference: http://developer.android.com/guide/topics/resources/drawable-resource.html#StateList
Here is an example of a drawable that will be white by default, black when pressed:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
android:drawable="#android:color/black" /> <!-- pressed -->
<item android:drawable="#android:color/white" /> <!-- default -->
</selector>
As mentioned by K-Ballo you can use StateListDrawable to implement a view with various different graphics depending on state. In your case Button is the view where two states are Button pressed and button not pressed.
We need to create a buttonselector.xml file in the drawable folder
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/button_not_pressed" android:state_pressed="false" android:state_selected="false"/>
<item android:drawable="#drawable/button_pressed" android:state_pressed="true"/>
</selector>
Create two separate xml files for the state of the button
button_not_pressed.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:startColor="#FFFFFF"
android:centerColor="#FFFFFF"
android:endColor="#FFFFFF"
android:angle="270" />
</shape>
button_pressed.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:startColor="#FF0000"
android:centerColor="#FF0000"
android:endColor="#FF0000"
android:angle="270" />
</shape>
You will notice two html color codes #FF0000 & #FFFFFF which represent background color of the button according to the state.
In you main.xml where you set the style of your custom button
<Button
android:id="#+id/customButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/buttonselector"
android:text="test"
android:textColor="#000000" />
In you activity class add the following two lines
Button customButton = (Button) findViewById(R.id.customButton);
customButton.setBackground(getResources().getDrawable(R.drawable.buttonselector));
Hope it helps
Try out this way:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_pressed="true" >
<shape>
<solid
android:color="#1E669B" />
<stroke
android:width="2dp"
android:color="#1B5E91" />
<corners
android:radius="6dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
<item>
<shape>
<gradient
android:startColor="#1E669B"
android:endColor="#1E669B"
android:angle="270" />
<stroke
android:width="4dp"
android:color="#1B5E91" />
<corners
android:radius="7dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
</selector>
I need to create a xml shape drawable that draws a rectangle without the top-line (a "u-form"). What I am able to do is draw a rectangle, like so:
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<solid android:color="#color/detailrow_bg_normal" />
<corners
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp"
android:radius="1dp"
android:topLeftRadius="10dp"
android:topRightRadius="10dp" />
<padding
android:bottom="2dip"
android:left="1.5dip"
android:right="1.5dip"
android:top="8dip" />
<stroke
android:width="1dip"
android:color="#color/detailtable_border" />
But how - if possible, can I define the same shape without the top (or bottom) line?
You could try using a layer-list. See if something like this would work:
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle">
<solid android:color="#color/detailtable_border" />
</shape>
</item>
<item android:left="1.5dp" android:right="1.5dp" android:bottom="2dp">
<shape android:shape="rectangle">
<solid android:color="#color/detailrow_bg_normal" />
</shape>
</item>
</layer-list>
This (should) fill the rectangle with the border color, then overlay it with the default background color, leaving the appropriate amount of the right/left/bottom border color showing.
try this code and also refer this link:::
I achieved a good solution with this one:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<!-- This is the line -->
<item android:top="-1dp" android:right="-1dp" android:left="-1dp">
<shape>
<solid android:color="#android:color/transparent" />
<stroke android:width="1dp" android:color="#ffffff" />
</shape>
</item>
</layer-list>
This works well in case you need a transparent color but still an open stroke color (In my case i only needed a bottom line). If you need a background color you can add a solid shape color as in above answer.
You might be able to achieve this using two shapes and a LayerList, but I think it is both a better solution and easier to use a NinePatch-drawable.
I'm creating a custom progress bar (positioned under a WebView) and what I would like to draw is a 1dp-wide line between the WebView and the ProgressBar. I'm modifying existing drawable, namely progress_horizontal.xml, and tried something like this:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
(...)
<item>
<shape android:shape="line">
<stroke android:width="1dp" android:color="#FF000000" />
</shape>
</item>
</layer-list>
This line however is vertically centered but I want it to be drawn on top of the drawable. The only idea I could come up with is to use this "hacky" gradient below:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
(...)
<item>
<shape>
<gradient
android:startColor="#FF000000"
android:centerColor="#00000000"
android:centerY="0.01"
android:endColor="#00000000"
android:angle="270"
/>
</shape>
</item>
</layer-list>
Do you have better ideas how to draw a single line shape aligned to the top of the drawable defined with layer-list?
I spent a while trying to figure this out as well. Hopefully there is a better way to do it but here is the method I used, which is also kind of hackish, but in case it helps someone, I thought I would share.
The first item in your layer list should be a solid of whatever color you want to be your border. Following that would be the thing(s) you want to have the border, with padding on whatever side you want the border to be on.
For example:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="YOUR BORDER COLOR" />
</shape>
</item>
<item android:top="YOUR TOP BORDER THICKNESS">
THE THING YOU WANT A BORDER ON
</item>
</layer-list>
The idea is that the padding on the item reveals the solid shape behind it, giving the border appearance. You could add padding to any side to add a border. I imagine you could get more complicated and have different colored borders this way as well.
Seems like a hack but it worked for me.
EDIT: I said "padding" but in layer-lists it's more of an offset.
i was going through all related topics but no one could solve my problem. But some of them were very useful to understand how the layer-list or shape parameters work.
My problem was to define a button with a linear gradient and draw a top and a bottom line in different colors. After all I hacked this solution. I saved the file unter res/drawable/blue_btn.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_pressed="true" >
<shape android:shape="rectangle">
<solid android:color="#color/blue_end" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
<stroke
android:width="1dp"
android:color="#color/bottomline_btn" />
</shape>
</item>
<item>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle">
<solid android:color="#color/blue" />
<gradient
android:startColor="#color/blue"
android:endColor="#color/blue_end"
android:angle="270" />
</shape>
</item>
<item android:top="0dp" android:bottom="-1dp" android:left="-1dp" android:right="-1dp">
<shape android:shape="rectangle">
<stroke
android:width="1dp"
android:color="#color/topline_btn" />
<solid android:color="#00000000" />
<corners android:radius="0dp" />
</shape>
</item>
<item android:top="-1dp" android:bottom="0dp" android:left="-1dp" android:right="-1dp">
<shape android:shape="rectangle">
<stroke
android:width="1dp"
android:color="#color/bottomline_btn" />
<solid android:color="#00000000" />
<corners android:radius="0dp" />
</shape>
</item>
</layer-list>
</item>
</selector>
<color name="topline_btn">#31ffffff</color>
<color name="bottomline_btn">#31000000</color>
<color name="blue">#449def</color>
<color name="blue_end">#2f6699</color>
Did you try offsetting it by something like this
http://android.amberfog.com/?p=9
My solution is to add 9-patch as the last layer item :
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape>
<solid android:color="#color/tab_button_active_layer2" />
</shape>
</item>
<item android:bottom="#dimen/tab_button_active_bottom_bar_width">
<shape>
<solid android:color="#color/tab_button_active_layer1" />
</shape>
</item>
<!-- 9-patch drawable -->
<item android:drawable="#drawable/tab_button_border_top"/>
</layer-list>