I work on an Android app and I need to implement filters based on the app design guidelines.
There are 2 kinds of filters:
with an icon
without an icon
The filter can be selected/unselected (or checked/unchecked)
Each case can be visible here:
There filters will be displayed through a GridView by 3 columns on several lines.
I would like to know which native control is more appropriate to achieve this?
I've tried to use Chip, which has a checked parameter, but it seems not possible to change the chipIcon position.
I've also tried tried the Button, which allows to change the icon position with app:iconGravity, but there is no checked parameter.
I've also seen ToggleButtons but it requires to use MaterialButtonToggleGroup, whereas I need to display each filter trough the GridView.
So do I need to create a custom control to achieve this?
You can use a ToggleButton with a top drawable as follows:
<ToggleButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/background_selector"
android:checked="false"
android:drawableTop="#drawable/car"
android:drawablePadding="8dp"
android:drawableTint="#drawable/icon_text_colors"
android:padding="8dp"
android:textColor="#drawable/icon_text_colors"
android:textOff="Car wash"
android:textOn="Car wash"
android:textSize="14sp" />
where background_selector.xml is
<selector>
<item android:drawable="#android:color/darker_gray" android:state_checked="true"/>
<item android:drawable="#android:color/holo_blue_light" />
</selector>
and icon_text_colors.xml looks like this:
<selector>
<item android:color="#android:color/white" android:state_checked="true"/>
<item android:color="#android:color/black" android:state_checked="false"/>
</selector>
The unchecked state looks like this:
while the checked state looks like this:
For the button without the icon, you simply would not specify a drawable for the top.
These are not the colors you want, but this is the idea.
I've finally achieved this with a MaterialButton and the android:checkable property:
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.material.button.MaterialButton
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:id="#+id/CheackableCell"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:icon="#drawable/ic_carwash"
app:iconGravity="textTop"
app:iconPadding="12dp"
tools:text="Car Wash"
android:textAlignment="gravity"
android:gravity="top|center"
android:paddingBottom="4dp"
android:checkable="true"/>
It's very close to solution given by Cheticamp.
Currently, I have the following bottom log in button.
When button is not being pressed
When button is being pressed
The XML looks like this
<LinearLayout
android:background="?attr/welcomeBottomNavBarBackground"
android:orientation="horizontal"
android:id="#+id/sign_in_bottom_nav_bar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<Button
style="?android:attr/buttonBarButtonStyle"
android:id="#+id/sign_in_button"
android:layout_width="0dp"
android:width="0dp"
android:layout_weight="1.0"
android:layout_height="48dp"
android:gravity="center"
android:layout_gravity="center"
android:enabled="true"
android:textAllCaps="true"
android:text="#string/log_in" />
</LinearLayout>
I would like to remove the padding (Or should I call it margin? Please refer to my bottom most p/s section) around button when it is being pressed.
I look at How to remove padding around buttons in Android?
I had tried
<Button
...
...
android:minHeight="0dp"
android:minWidth="0dp" />
It doesn't work and has no effect.
I further try
<Button
...
...
android:background="#null"
android:minHeight="0dp"
android:minWidth="0dp" />
No more padding when pressed. However, the material designed pressed visual effect will gone too.
May I know what is the best way to remove button padding during pressed, yet retain the material designed pressed visual effect?
P/S
I don't really know whether I should call it padding or margin. What I wish to achieve is that, when we press on the bottom region, press visual effect change should be covered entire 100% bottom bar region (#+id/sign_in_bottom_nav_bar), instead of current 95% bottom bar region.
A standard button is not supposed to be used at full width which is why you experience this.
Background
If you have a look at the Material Design - Button Style you will see that a button has a 48dp height click area, but will be displayed as 36dp of height for...some reason.
This is the background outline you see, which will not cover the whole area of the button itself.
It has rounded corners and some padding and is supposed to be clickable by itself, wrap its content, and not span the whole width at the bottom of your screen.
Solution
As mentioned above, what you want is a different background. Not a standard button, but a background for a selectable item with this nice ripple effect.
For this use case there is the ?selectableItemBackground theme attribute which you can use for your backgrounds (especially in lists).
It will add a platform standard ripple (or some color state list on < 21) and will use your current theme colors.
For your usecase you might just use the following:
<Button
android:id="#+id/sign_in_button"
style="?android:attr/buttonBarButtonStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Login"
android:background="?attr/selectableItemBackground" />
<!-- /\ that's all -->
There is also no need to add layout weights if your view is the only one and spans the whole screen
If you have some different idea on what your background should look like you have to create a custom drawable yourself, and manage color and state there.
As simple, use the inset property like:
android:insetTop="0dp"
android:insetBottom="0dp"
android:insetRight="0dp"
android:insetLeft="0dp"
In styles.xml
<style name="MyButtonStyle" parent="Base.Widget.AppCompat.Button">
<item name="android:background">#drawable/selector</item>
<item name="android:textColor">#android:color/black</item>
</style>
In values/drawable:
my_drawable.xml
<?xml version="1.0" encoding="utf-8"?>
<shape android:shape="rectangle" xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="2dp" />
<!-- specify your desired color here -->
<solid android:color="#9e9b99" />
</shape>
selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:drawable="#drawable/my_drawable"/>
<item android:state_pressed="true" android:drawable="#drawable/my_drawable"/>
<item android:drawable="#android:color/transparent"/>
</selector>
In values/drawable-v21:
my_drawable.xml
<?xml version="1.0" encoding="utf-8"?>
<shape android:shape="rectangle"
android:tint="?attr/colorButtonNormal"
xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="2dp" />
<solid android:color="#android:color/white" />
</shape>
selector.xml
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="?attr/colorControlHighlight">
<item android:id="#android:id/mask"
android:drawable="#drawable/my_drawable" />
</ripple>
In layout:
<Button
android:id="#+id/button"
style="#style/MyButtonStyle"
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="Test"/>
Result on API 19:
Result on API 21:
Source code
I think the best solution to solve that is create your own Ripple Effect. The padding when you press the button is respecting the default Ripple Effect of the component.
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="?attr/colorControlHighlight">
<item android:drawable="?attr/colorPrimary"/>
</ripple>
Or you can try change the style of your button to style="?android:textAppearanceSmall"
Remember: This effect is only shown on Android Lollipop (API 21) or higher.
I have been through what you are going through. Long story short, you just cannot do it cleanly with a <Button> tag alone, while ensuring backwards compatibility.
The simplest and the most widely practiced method is to use a <RelativeLayout> underlay, around a <Button>.
Button Code:
<RelativeLayout
android:id="#+id/myButtonUnderlay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
android:visibility="visible">
<Button
android:id="#+id/myButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:text="I am as cute as a Button"/>
</RelativeLayout>
Wherever you need to use a button, you use this complete code.
Here is the breakdown:
OnClick events will be hooked to myButton.
Control dimensions of your button, by changing attributes of myButtonUnderlay.
In myButton, android:background="?attr/selectableItemBackgroundBorderless". This will make it a transparent button with just the text, and backwards compatible ripples.
In myButtonUnderlay, you will do all the other background applications, like setting the color of the button, margins, paddings, borders, gradients, and shadows etc.
If manipulation of the button's visibility (programmatic or not) is wish, you do it on myButtonUnderlay.
Note: To ensure backwards compatibility, make sure that you use
android:background="?attr/selectableItemBackgroundBorderless", and NOT
android:background="?android:attr/selectableItemBackgroundBorderless"
As #David Medenjak answer you can read the Google Material design Button-style to its developer site. Use button style as #David Medenjak explained in his answer. You can also do by the following way also
It is not a padding or margin but it is actually background effect of button.
If you want to remove that then you can do as following.
Option 1:
Step 1: Put the below code in styles.xml
<style name="myColoredButton">
<item name="android:textColor">#FF3E96</item>
<item name="android:padding">0dp</item>
<item name="android:minWidth">88dp</item>
<item name="android:minHeight">36dp</item>
<item name="android:elevation">1dp</item>
<item name="android:translationZ">1dp</item>
<item name="android:background">#FF0000</item>
</style>
Step 2:Create a new XML file under drawables folder and add the following code: I named my XML file as button_prime.xml
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="#color/colorPrimary">
<item>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="1dp" />
<solid android:color="#8B8386" />
</shape>
</item>
</ripple>
Step 3: Use the style and drawable in your Button as follows.
<Button
style="#style/myColoredButton"
android:layout_width="250dp"
android:layout_height="50dp"
android:text="Cancel"
android:gravity="center"
android:background="#drawable/button_prime"
android:colorButtonNormal="#3578A9" />
Option 2:
With the Support Library v7, all the styles are actually already defined and ready to use, for the standard buttons, all of these styles are available.So you can set your button style like this
<Button
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="BUTTON"
android:gravity="center"
android:minHeight="0dp"
android:minWidth="0dp"
android:background="#color/colorAccent"/>
For more detail of Button style please check this answer
I think you will check this answer also. I hope you will get your solution.
The padding and margin may be a result of the original resources used in the button.
So you could try to change the resources used, using a selector:
<selector
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="#drawable/btn_action_hover" />
<item android:state_selected="true" android:drawable="#drawable/btn_action_hover" />
<item android:state_focused="true" android:drawable="#drawable/btn_action_hover" />
<item android:drawable="#drawable/btn_action_normal" />
</selector>
That would change the default images/shapes for your buttons, so you could try using drawables and set every item to a drawable. The drawable being either a bitmap, or a .xml file(style file) defining the look of the button in its current state. I assume there still are some native styles included even though you have set the button-style yourself. This may be because you aren't using a custom theme. So the issue may also be solved by defing
theme="#style/myNewTheme"
where myNewTheme is your theme, and it should have any parents(parent="" should not be defined).
Take any given theme(designed by Google/Android, for an instance Theme.AppCompat.[name]), it does also come with a buttonStyle. This is a part of Theme.Holo.Light:
<!-- Button styles -->
<item name="buttonStyle">#style/Widget.Holo.Light.Button</item>
<item name="buttonStyleSmall">#style/Widget.Holo.Light.Button.Small</item>
<item name="buttonStyleInset">#style/Widget.Holo.Light.Button.Inset</item>
<item name="buttonStyleToggle">#style/Widget.Holo.Light.Button.Toggle</item>
<item name="switchStyle">#style/Widget.Holo.Light.CompoundButton.Switch</item>
<item name="mediaRouteButtonStyle">#style/Widget.Holo.Light.MediaRouteButton</item>
<item name="selectableItemBackground">#drawable/item_background_holo_light</item>
<item name="selectableItemBackgroundBorderless">?attr/selectableItemBackground</item>
<item name="borderlessButtonStyle">#style/Widget.Holo.Light.Button.Borderless</item>
<item name="homeAsUpIndicator">#drawable/ic_ab_back_holo_light</item>
As you see, this theme defines how your buttons will look/work in basic features. You can override parts of it, but you haven't overridden the important parts(being buttonStyle and similar). So if you create a new theme yourself and style it to your liking and set the theme(using theme="themename") and that theme does not inherit any theme, you should be able to style your buttons to your liking without having to worry about the default styles in the theme
Basically:
calling padding/margin="0dp" will not help. The default drawable defined by the theme has this in the button drawable, meaning you cannot change it. So you have to either change the button style, or change the theme completely. Make sure that theme does not have any parents, because many themes define the button style. You do not want the button style defined by the theme.
The best solution these days is just to use MaterialButton in place of Button.
Note: MaterialButton is visually different from Button and AppCompatButton. One of the main differences is that AppCompatButton has a 4dp inset on the left and right sides, whereas MaterialButton does not. To add an inset to match AppCompatButton, set android:insetLeft and android:insetRight on the button to 4dp, or change the spacing on the button’s parent layout.
When replacing buttons in your app with MaterialButton, you should inspect these changes for sizing and spacing differences.
Source: https://material.io/develop/android/components/material-button/
I'd suggest you taking a look at this just in case before all.
Then, if not working i'd suggest you to create your own style (like azizbekian suggest)using android xml drawables, and drawable states to differentiate pressed/notpressed.
I think using your own style may be the best answer as it will further give you more control on how your app is displaying, but using android default themes and styles also allows the user to have custom styles which is a good idea. However, you cannot test every custom style so you cannot check that your app will display correctly on ALL custom styles, and therefore may encounter problems with some.
Set the Button background as android:background="?selectableItemBackground"
<LinearLayout
android:background="?attr/welcomeBottomNavBarBackground"
android:orientation="horizontal"
android:id="#+id/sign_in_bottom_nav_bar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<Button
style="?android:attr/buttonBarButtonStyle"
android:background="?selectableItemBackground"
android:id="#+id/sign_in_button"
android:layout_width="0dp"
android:width="0dp"
android:layout_weight="1.0"
android:layout_height="48dp"
android:gravity="center"
android:layout_gravity="center"
android:enabled="true"
android:textAllCaps="true"
android:text="#string/log_in" />
</LinearLayout>
After trying lots of solution, Finally I came to a conclusion that with tag alone we can't achieve this. to remove this unwanted space around button my solution is as below:
<RelativeLayout
android:id="#+id/myButtonUnderlay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:visibility="visible">
<Button
android:id="#+id/save_button"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginTop="-5dp"
android:layout_marginBottom="-5dp"
android:layout_above="#+id/content_scrollview"
android:layout_gravity="bottom"
android:background="#drawable/ripple_theme"
android:enabled="true"
android:text="SetUp Store"
android:textColor="#fff"
android:textSize="18sp"
android:visibility="gone"
tools:visibility="visible"
style="#style/MediumFontTextView" />
</RelativeLayout>
1.add a drawable resource file named maybe button_background.xml
<?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="#ff0000"/>
<stroke android:width="5dp" android:color="#00ff00"/>
</shape>
</item>
<item>
<shape>
<solid android:color="#00ff00"/>
</shape>
</item>
</selector>
2.Use the button_background.xml as the button background, done!
github
blog
I don't really know whether I should call it padding or margin.
The button is enacting surface elevation for providing visual feedback in response to touch. It is one of two feedbacks used for surface reaction; the first one being the ripple effect. For example, a raised button has resting state elevation of 2dp and pressed state elevation of 8dp (See raised button under Shadows). The button meets the finger as it touches the surface.
May I know what is the best way to remove button padding during pressed, yet retain the material designed pressed visual effect?
Having answered the first part, I do not believe you are having all of the material design if you wish to remove the surface elevation effect.
Anyways, here is how to remove surface elevation visual feedback:
Add animator file button_raise.xml to animator directory under res directory having the following code:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_enabled="true"
android:state_pressed="true">
<objectAnimator
android:duration="#android:integer/config_shortAnimTime"
android:propertyName="translationZ"
android:valueTo="0dp"
android:valueType="floatType" />
</item>
</selector>
Refer newly created animator in the button using stateListAnimator property:
<Button
...
android:stateListAnimator="#animator/button_raise"
... />
Hope this helps.
How do I make a basic icon button without text or background? For example, just a simple vector image from #drawables that, when clicked, shows that circular response thing around it. I don't want the icon to have any background color to it. Just an icon that can be clicked, that's literally it.
I can only figure out how to do it by creating a menu and setting the icon as an item with app:showAsAction="always". It seems like there must be a better way to do this.
Edit: Here's an example of what I want to achieve. It's very basic. Just a clickable icon with responsive feedback when touched. https://material-ui.com/components/buttons/#icon-buttons
It's exactly the same as creating the following. I just thought there was likely an easier way to do this without having to create and load a menu just for one single icon:
<menu 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"
tools:context="com.mycompany.myapp.MainActivity">
<item
android:id="#+id/action_contacts"
android:icon="#drawable/ic_contacts_24"
android:title="#string/action_contacts"
app:iconTint="#android:color/white"
app:showAsAction="always" />
</menu>
First create a vector drawable and then add to the ImageView like
this:
<ImageView
android:id="#+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="?selectableItemBackgroundBorderless"
android:clickable="true"
android:focusable="true"
app:srcCompat="#drawable/ic_delete" />
You can use a MaterialButton, ImageButton and even an ImageView for this. Here's an example of how you'd do it with an ImageView...
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:background="?attr/selectableItemBackground"
android:src="#drawable/your_icon" />
All you need to do is set the selectableItemBackground, this will use your theme's primary color (or maybe the secondary color, I can't remember).
Now if you want a different color for ripple effect, for example a grey ripple, then you can create the drawable yourself...
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="#dddddd">
<item android:id="#android:id/mask">
<color android:color="#dddddd" />
</item>
</ripple>
and set the view background below..
android:background="?attr/selectableItemBackground"
it'll work with any view provided the view is clickable
Yes, you can use ImageView if you like, but if you want to generate the complete image (including frame/borders) yourself you don't have to go that far. You could practically use plain View (except that you'd have to supply android:layout_width/height explicitly). Just use Button and have the android:background specify a selector which will select between images.
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/clear1" android:state_pressed="true"/>
<item android:drawable="#drawable/clear0"/>
</selector>
I am using Image selector for changing my tab-widget image icons , when I selected any one of image view, image of that image view should change. For that i have used following code, but it is working good , but problem is android:state_pressed="true" is working but android:state_selected="true" not working in any image view , i am getting stuck from this issue , can anyone help me, answer will be appreciable.Thanks in advance.
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/ic_contacts_vippie_selected" android:state_selected="true"/>
<item android:drawable="#drawable/ic_contacts_vippie"/>
Here is my Imageview:
<ImageView
android:id="#+id/hiiMoblieContact"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="#drawable/flexi_contact_selector" />
Instead of image view use toggle button or check-box or radio button. For example I am using check box.
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/hiiMoblieContact"
android:button="#drawable/flexi_contact_selector"/>
flexi_contact_selector
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/ic_contacts_vippie_selected" android:state_checked="true" />
<item android:drawable="#drawable/ic_contacts_vippie" />
</selector>
Hope this will help you..
Imageview doesn't save states. But don't worry, there is a workaround. Either use toggleButtons and set background or use CheckableLinearlayout as parent of imageview. Xml of imageview should be like this-
<package_name.CheckableLinearLayout android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/hiiMoblieContact"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:clickable="false"
android:duplicateParentState="true"
android:src="#drawable/flexi_contact_selector"/>
</package_name.CheckableLinearLayout>
The changes are highlighted in bold. Now you can handle the checkablelinearlayout's set checkedmethod. If for example you set the checkacle linearlayout's set checked true, the image will automatically change. You will have to make this CheckableLinearLayout class in your project and its link is - http://developer.android.com/intl/es/samples/CustomChoiceList/src/com.example.android.customchoicelist/CheckableLinearLayout.html
I have an ImageButton:
<ImageButton
android:layout_width="60dp"
android:layout_height="60dp"
android:id="#+id/btn_70s"
android:src="#drawable/btn_70s"
android:background="#null" /* Sets transparent BG for button image(PNG) */
/>
The image is "btn_70s", how do I set a "pressed" version of the image for when the ImageButton is tapped?
The documentation states to create an XML file and place it in the drawable directory:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
android:drawable="#drawable/button_pressed" /> <!-- pressed -->
<item android:state_focused="true"
android:drawable="#drawable/button_focused" /> <!-- focused -->
<item android:drawable="#drawable/button_normal" /> <!-- default -->
</selector>
This to me says it would affect all the ImageButtons rather than an individual one. Would I save it as an individual XML for each button for example (btn_70s_custom.xml), and then use it like:
<ImageButton
android:layout_width="60dp"
android:layout_height="60dp"
android:id="#+id/btn_70s"
android:src="#drawable/btn_70s"
android:android:background="#drawable/btn_70s_custom"
/>
Only issue with this, I can't use #null to allow transparency. Any assistance is appreciate.
Have a look over there for a (possible) solution to your problem : Make button background transparent using selector
And for the record,
This to me says it would affect all the ImageButtons rather than an individual one. Would I save it as an individual XML for each button for example (btn_70s_custom.xml), and then use it like:
No, it won't set this theme for all the buttons, but only for the ones where you specify to use this selector.
Hope this helps!
You can try selectableItemBackground
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackground"/>