I want my buttons to be transparent as I have an image on the activity as a background.
If the buttons are not transparent, those buttons are covering the image and image background seems useless.
If I use android:background="#android:color/transparent", it is making my button completely invisible except the text on it. So, I need the button to be transparent provided it should be visible that there is a button. Code snippet would be appreciated.
<Button
android:id="#+id/new_button"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent" //this line makes the button completely invisible.
android:text="#string/label" />
If you just want white borders, and the text/icons in the button, but the button background transparent create the following drawable (I named it button_border.xml):
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape>
<stroke
android:color="#android:color/white"
android:width="1dp" />
<solid android:color="#android:color/transparent" />
</shape>
</item>
</selector>
And use it as a background for the button:
<Button
.
.
.
android:background="#drawable/button_border"
/>
I'd guess there is a more elegant way to do it with themes, but I'm not that far yet. In the button_border drawable you can add rounded corners and whatnot...
android:background="#A0FFFFFF"
I've hard coded the colour, but you should store it in colors.xml
Modify the first two characters, A0, to adjust how much transparency you want and the last 6 characters the color you want.
Apply selector for button, like this
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"><shape>
<solid
android:color="#color/color_1_end" />
<stroke
android:width="1dp"
android:color="#android:color/transparent" /> // transparent patametr
<corners
android:radius="4dp" />
<padding
android:bottom="10dp"
android:left="10dp"
android:right="10dp"
android:top="10dp" />
</shape></item>
<item>
<shape>
<gradient android:angle="270"
android:endColor="#color/color_1_start"
android:startColor="#color/color_1_end" /> // maybe transparent
<stroke
android:width="1dp"
android:color="#color/color_1_start" /> //maybe transparent
<corners android:radius="4dp" />
<padding android:bottom="10dp"
android:left="10dp"
android:right="10dp"
android:top="10dp" />
</shape>
</item>
Modify this for you =)
Apply border for button
<item>
<shape>
<padding
android:bottom="1dp"
android:left="1dp"
android:right="1dp"
android:top="1dp" />
<solid android:color="#FF000000" />
<corners android:radius="3dp" />
</shape>
</item>
<item>
<shape>
<padding
android:bottom="2dp"
android:left="2dp"
android:right="2dp"
android:top="2dp" />
<gradient
android:angle="315"
android:centerColor="#FFFFFFFF"
android:endColor="#FFB0B0B0"
android:startColor="#FFB0B0B0" />
</shape>
</item>
<Button
android:id="#+id/btnLeft"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_margin="7dip"
android:background="#drawable/button_border"
android:scaleType="centerInside"
/>
Just try to use below code in java
<br/>
button.getBackground().setAlpha(int);<br/>
correct range of input parameter is between 1 and 255 and the '1' is more transparent.
common pitfall is using:<br/>
button.setAlpha(float);<br/>
that make all button transparent.
Related
I found here how to create a shadow for a button.
Here's what I would like to do :
And here's what I succeeded to do so far :
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<layer-list>
<item android:right="10dp" android:top="10dp">
<shape>
<corners android:radius="3dp" />
<solid android:color="#D6D6D6" />
</shape>
</item>
<item android:bottom="2dp" android:left="2dp">
<shape>
<solid android:color="#color/mainBlue"/>
<corners android:radius="12dp" />
<padding android:bottom="10dp" android:left="10dp"
android:right="10dp" android:top="10dp" />
</shape>
</item>
</layer-list>
</item>
</selector>
Obviously the shadow is completely different, and if you notice, it is kind of cutten in the bottom left corner and we don't see the radius. In my design software, I specified an angle, a distance, a spread and a size for the shadow. How may I control these parameters in XML so that I can faithfully reproduce the same shadow ?
EDIT : what I ended up doing is to export my design as a png file as I didn't find any way to reproduce the shadow with code :/
Just try adding elevation to the button:
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/button_bg"
android:elevation="10dp"
android:textColor="#color/white" />
Make sure that you give your button a background, otherwise it won't work.
I'm trying to get my buttons to show 3 states, normal, pressed and selected. Normal and pressed show ok, but the selected state does not. I've tried using state_focused state_activated and state_active and combinations of states set to true and false but without success.
Can buttons show the selected state? and if so what am I doing wrong?
minSdkVersion = 11
targetSdkVersion = 19
Here's the xml for the selector, red_button.xml
<?xml version="1.0" encoding="utf-8" ?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true">
<shape>
<solid android:color="#000000" />
<stroke
android:width="1dp"
android:color="#992f2f" />
<corners android:radius="6dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
<item android:state_pressed="true">
<shape>
<solid android:color="#ef4444" />
<stroke
android:width="1dp"
android:color="#992f2f" />
<corners android:radius="6dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
<item>
<shape>
<gradient
android:startColor="#ef4444"
android:endColor="#992f2f"
android:angle="270" />
<stroke
android:width="1dp"
android:color="#992f2f" />
<corners android:radius="6dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
</selector>
and here's the xml for the button, which is contained within a LinearLayout and loaded as a fragment into mainActivity
<Button
android:background="#drawable/red_button"
android:id="#+id/scene_1_btn"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:maxWidth="150dp"
android:minWidth="100dp"
android:text="#string/scene_1_btn_text"
android:onClick="sendMessage"
style="#style/button_text" />
Thank you.
Buttons actually behave like keyboard buttons, i.e. they have only two states viz normal and pressed.
If you want to remember/show the seleted state, i got an idea..., try using 'radio group' (if you want only one to belected from a group) or use toggle button/switch (each of them remember their state as ON or OFF) and create their custom UI so that they look like buttons as you want them to.
I want to create four custom buttons(As Roundedrects in iOS) on the top of the screen.
Using the Custom xml with shape tag , I can get it .
Custom.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#F9FAFC" />
<corners android:radius = "20dp"/>
</shape>
I am using it as:
android:background = "#drawable/custom"
But I am getting only the color(grey) set as in the custom xml for all the buttons, which shouldn't.
I want to set different Hexa(#FF0000 ... ) colors to that custom buttons.After lot of research on this site, I think it will be better to rise a question.
Any of you geeks can point the link or please help me with some code , how to achieve above requirement.
PLEASE NOTE: I don't need three states of the button as Pressed, Focused, Disabled. I already have four buttons with Square Shape. Now I want to create them as Rounded Rect shape to make it look Attractively.As for the case I can't create 4 CUSTOM files in drawable folder for 4 BUTTONS. Because in future my requirement may extend to some 8-10 buttons or even more .*
Thank you.
you need to use item tags. here is an example containing button states, solid and gradient colors, strokes, paddings and corner radius. you need to put this into selector tags.
<item android:state_enabled="false" >
<shape>
<solid
android:color="#474141" />
<stroke
android:width="1dp"
android:color="#474141" />
<corners
android:radius="3dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
<item android:state_pressed="true" >
<shape>
<solid
android:color="#f3ae1b" />
<stroke
android:width="1dp"
android:color="#f3ae1b" />
<corners
android:radius="3dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
<item>
<shape>
<gradient
android:startColor="#990000"
android:endColor="#990000"
android:angle="270" />
<stroke
android:width="1dp"
android:color="#990000" />
<corners
android:radius="4dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
In my app I have set for a button the background to a certain color. I don't like how it looks like.The button is like a rectangle, with straight edges. I want that the button to have rounded corners. How is it possible?
Here is my button in xml :
<Button android:id="#+id/button" android:text="Participer au concours de photos"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_marginTop="410dip" android:layout_centerHorizontal="true"
android:background="#drawable/orange1"/>
Thanks...
Use selector
<selector
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" >
<shape>
<gradient
android:startColor="#24a1dd"
android:centerColor="#158ee4"
android:endColor="#37b8ee"
android:angle="270"
android:centerY="0.88" />
<stroke
android:width="3dp"
android:color="#00ffffff"
/>
<corners
android:radius="3dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
<item android:state_focused="true" >
<shape>
<gradient
android:endColor="#59bfe6"
android:centerColor="#36aced"
android:startColor="#91def7"
android:angle="270"
android:centerY="0.88" />
<stroke
android:width="3dp"
android:color="#00ffffff"
/>
<corners
android:radius="3dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
<item>
<shape>
<gradient
android:endColor="#e1e1e1"
android:centerColor="#bdbebd"
android:startColor="#f6f2f6"
android:angle="270"
android:centerY="0.88" />
<stroke
android:width="3dp"
android:color="#00ffffff"
/>
<corners
android:radius="3dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
</selector>
Something like this should do the work. Just fix the color values. Which is the same as the the answer of this question Standard Android Button with a different color
There are two ways :
Use 9 patch drawables (png image)
here is complete tutorial 9 patch drawables: background of a customized Button
Set xml drawable as background of your buttons.
Take a look here Gradient buttons for android.
And to know more about xml drawables :-
ANDROID XML DRAWABLES
Using Android Shapes in xml I have defined a gradient which I use as the background for a button.
This all works nice, but there's no edge surrounding the button. I would like it to look similar to the normal Android button but I need more flexibility to control the color and look.
The shape is defined as follows:
<?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:endColor="#00FF00"
android:angle="270" />
<corners android:radius="3dp" />
<stroke android:width="5px" color="#000000" />
</shape>
I would expect the border to be set in the xml. Why doesn't "stroke" fix it? Stroke doesn't seem to do anything.
I checked the Android Developer spec, but couldn't find the answer there:
http://developer.android.com/guide/topics/resources/drawable-resource.html
I have also looked through all the properties of the Android Button, but as expected there's no such parameter, probably since it's built into the normal Android button. Btw, I checked ImageButton properties too.
Can someone please help?
I know there's the alternative to make an image with proper edges and use an ImageButton, but there really should be a way to fix this programmatically.
Thanks!
Anna
I had this problem a while ago. While I don't quite remember why I made each decision, the way I solved it was to use a a shape layer-list. This lets you stack one shape on top of another. For example, the following XML creates a shape with a solid black outline 2px wide, with a 'grey to white to grey' gradient across the middle:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape>
<padding android:left="1dp"
android:top="1dp"
android:right="1dp"
android:bottom="1dp"/>
<solid android:color="#FF000000"/>
<corners android:radius="3dp"/>
</shape>
</item>
<item>
<shape>
<padding android:left="2dp"
android:top="2dp"
android:right="2dp"
android:bottom="2dp"/>
<gradient android:startColor="#FFB0B0B0"
android:centerColor="#FFFFFFFF"
android:endColor="#FFB0B0B0"
android:angle="315"/>
</shape>
</item>
</layer-list>
If you want to be able to change that color dynamically at runtime, then things get a lot messier. Again, the details of why I had to do things a certain way are hazy, but I ended up having to create a custom view class which contained a custom ShapeDrawable. I started off looking at the examples from the ApiDemos app which comes with the SDK - it's a very good resource.
EDIT: Another reason your stroke might not be appearing is that you forgot the android: before the color="...." bit.
I've had the same problem, what i observed is stroke is not applying to button as border at design time but at run time i see the border.
I jst used the following same code
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" android:padding="10dp">
<solid android:color="#color/black" />
<stroke android:width="1px" android:color="#color/red" />
</shape>
as steve hanley said abvoe you miss the android: for the color attribute.
Hope this helps somebody....
Probably much to late, but you have to add an extra ff before the color.
<stroke android:width="5px" color="#ff000000" />
Greets
Use ImageButton
<ImageButton
android:layout_width="40dp"
android:layout_height="30dp"
android:src="#drawable/left_arrow"
android:background="#drawable/button_selector"
android:gravity="center"/>
Use drawable selector to ImageButton and define your properties
<item android:state_pressed="true" >
<shape>
<gradient
android:startColor="#color/startColor"
android:endColor="#color/endColor"
android:angle="270" />
<stroke
android:width="0.5dp"
android:color="#color/borderColor" />
<corners
android:topLeftRadius="5dp"
android:bottomRightRadius="5dp"/>
</shape>
</item>
<item android:state_focused="true" >
<shape>
<gradient
android:startColor="#color/startColor"
android:endColor="#color/endColor"
android:angle="270" />
<stroke
android:width="0.5dp"
android:color="#color/borderColor" />
<corners
android:topLeftRadius="5dp"
android:bottomRightRadius="5dp"/>
</shape>
</item>
<item>
<shape>
<gradient
android:startColor="#color/startColor"
android:endColor="#color/endColor"
android:angle="270" />
<stroke
android:width="0.5dp"
android:color="#color/borderColor" />
<corners
android:topLeftRadius="5dp"
android:bottomRightRadius="5dp"/>
</shape>
</item>
<item android:state_enabled="false" android:drawable="#drawable/button_disabled" />
<item android:state_focused="true" android:drawable="#drawable/button_highlighted"/>
<item android:state_pressed="true" android:drawable="#drawable/button_highlighted"/>
<item>
<shape>
<gradient android:startColor="#fdfdfd" android:endColor="#f0f0f0" android:angle="270" />
<stroke android:width="1dp" android:color="#56390a" />
<corners android:radius="3dp" />
<padding android:left="10dp" android:top="10dp" android:right="10dp" android:bottom="10dp" />
</shape>
</item>
Adding stroke color #56390a will solve the problem.