Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Great answers. Adding one that loads the color from an Android resources xml but still sets it programmatically:.
Learn more. How to set text color to a text view programmatically [duplicate] Ask Question. Asked 8 years, 4 months ago. Active 1 year, 6 months ago. Viewed k times.
How can I set Text Color of a text view to bdbdbd programatically? Baby 4, 3 3 gold badges 26 26 silver badges 47 47 bronze badges. Noby Noby 5, 8 8 gold badges 35 35 silver badges 62 62 bronze badges. A note about tweaking UI in code, please consider the advantages of seeing the UI in design time, minimizing the runtime changes to minimum. Active Oldest Votes. Jun Mar 25 '15 at Adding one that loads the color from an Android resources xml but still sets it programmatically: textView. Use instead: textView.
Use getColor int, Theme instead. Check this. AlikElzin-kilaka AlikElzin-kilaka Thanks, I was having trouble for some reason setting the holo colors, like tv. The text was showing up invisible. Color is deprecated.
Jave Jave Also when you do Color. Marek Sebera Marek Sebera The Overflow Blog. Podcast Programming tutorials can be a real drag. Featured on Meta. Community and Moderator guidelines for escalating issues via new response…. Feedback on Q2 Community Roadmap. Triage needs to be fixed urgently, and users need to be notified upon…. Technical site integration observational experiment live on Stack Overflow. Dark Mode Beta - help us root out low-contrast and un-converted bits.I'm using xamarin.
Forms and want to customize the color of the switch? I found on forum to customize the switch but it seems to be not working.
Below is the code : [assembly: ExportRenderer typeof Xamarin. OnElementChanged e. Color can be personalized with this control. Best way is a custom render for Android, you can use styles also, but low api levels does not allow switch customization. A simple solution for customizing Switch color on Android is available here. You just have to change accent Color in Color. NO need to use a custom renderer I am using forms. I have the Accent color resource to my app, but it's still the default green.
Am i missing something. GeradeLintonGeldenhuys You will have to create a custom switch for that. SaraLlorenteI am trying to use your custom renderer and it works fine as far as style goes finally.
But now that the style works, the Toggle event is not raised in the Forms library. Do you have any idea why there is no event raised when it is checked? KevinGoss said: SaraLlorenteI am trying to use your custom renderer and it works fine as far as style goes finally. I am using switch custom renderer. Its simple just apply bellow code in AppDelegate. FromRGB0, 0. Happy Coding MarkHeinis it works! Changes the color of the track, but NOT the color of the thumb, which is still a pale blue-green when On.
By continuing to browse this site, you agree to this use. Learn more. Xamarin Menu About What is Xamarin? What is Xamarin. March in Xamarin. OnElementChanged e ; if Control!We can add a Switch to our application layout by using Switch object.
Following is the pictorial representation of using Switch in android applications. We can change the default state of Switch by using android:checked attribute. Following is the sample way to define Switch control in XML layout file in the android application. In android, we can create Switch control programmatically in activity file based on our requirements. This is how we can handle Switch click events in android applications based on our requirements.
Following are the some of commonly used attributes related to Switch control in android applications. Create a new android application using android studio and give names as SwitchExample. In case if you are not aware of creating an app in android studio check this article Android Hello World App.
AppCompatActivity; import android. Bundle; import android. View; import android. Button; import android. Switch; import android. If you observe above code we are calling our layout using setContentView method in the form of R. When we run the above example using an android virtual device AVD we will get a result like as shown below. This is how we can use Switch control in android applications to switch the settings between two states either ON or OFF based on our requirements.Posted by Dimitri Feb 13th, Filed under Programming.
This post explains how to change the color of the standard Android button. It also shows how to change the color of the text inside those buttons. It goes into detail on how to create a ColorFilter effect that changes the color of the button using three different approaches. The code featured in this post has been tested on Android 2.
Before starting, a little advice: know that changing the color of the standard Android button through XML is an easier and more straightforward approach.
Android: Changing app theme at runtime
For that, please refer to the link Custom color buttons for Android 9-Patch. First, a Button object is declared line With that, the Button can be inflated from the XML file line Finally, the color of the background of the button is changed at line From that Drawable, a call to the setColorFilter method is made. The integer that represents the color is composed of four hexadecimal pairs in the ARGB format. The first two values correspond to the alpha channel, the other three value pairs are, respectively, the red, green and blue color channels.
The last parameter is PorterDuff. Multiplywhich means that the color passed on the first argument and the colors already on the button are going to be multiplied. Essentially, the PorterDuff. In essence, the setColorFilter method is creating a new ColorFilter object with those parameters and applying it to the Drawable is the background of the button. Finally, the method setTextColor is called line 26 and it takes a color as an integer on the same ARGB format previously explained.
As the name suggests, this method changes the color of the text inside a button. The last bit of code flags the system that this View widget needs to be redrawn. The standard Android button with the multiplied background and blue text color. This is the same as the previous Activityexcept for line Since this parameter is 0the color gets multiplied. Before creating and applying any effect to the Drawable the hexadecimal ARGB color is being stored at the bgColor integer line To better understand it, please take a look here and here.
This is being done to clamp the value of each color channel between a 0. In terms of code, this third option is the most complex, but it allows greater control of the colors the button background is being multiplied with. For an example on how to change the saturation using the ColorMatrixrefer to this other tutorial on 41 Post : Android: changing image color saturation.
The results will be different when running this code on applications or Android devices that uses custom themes. As stated on the beginning of the post, the code featured on this post works on Android 4. Take a look at those two screenshots, one taken on Android 2. Button with multiplied background color and green text color on Android 2. Button with multiplied background color and green text color on Android 4.
Therefore, devices with custom user interfaces, such as the ones that use the HTC Sense will render the buttons differently.This post shows how to use android switch button, apply material styles, create custom styles, create custom switch button and how to handle switch button click events.
Some of the important switch properties are textAppearance, textColor, track, thumb, switchTextAppearance, textOn, testOff, background, and showText. Property thumb is used to set a drawable that switches back and forth, property track is used for setting a drawable as track for switch thumb, textOn and textOff are used to set text to be displayed when switch is in on or off state, textswitchTextAppearance is used to set style for switch text, and showText is used to indicate whether to show switch text or not.
Android system provides many material themes. When application level theme is set to one of the material themes, android switch will be displayed applying default switch material theme of the application theme used in the application. Below screen shot shows switch button in both on and off states when application theme is set to Theme.how to change drawable shape color runtime in android
Application level themes can be customized by setting properties to custom values. If you customize properties related to UI controls, the changes will be applied to all UI controls and throughout the application. To change switch text color and switch button color, you need to set textColorPrimaryDisableOnly and colorAccent properties to custom values. You can apply it to an application by setting theme attribute of application element in mainifest xml file. Below screen shot shows switch button after application theme is set to custom material theme defined above.
If you want to change switch style only in a particular section of your application, then define custom switch widget style by inheriting Widget. Switch as shown below and apply it to switch elements using theme attribute.
Switch attribute colorControlActivated can be used to set track and thumb color when switch is active and colorForeground can be used to set track color when switch is in normal state. You can use thumbTint and trackTint properties to change color of thumb and track.
Applying colors to track and thumb using selector xml allows you to apply different colors for different states, see custom switch section. Switch on and off events or switch drag event can be handled in two ways. One way of handling switch click event is by defining a method in your activity or fragment with View as input parameter and setting it as value for onClick attribute of Switch in layout xml as shown below. You can customize android switch track by defining a drawable xml resource as shown below.
Color is applied based on the state of switch. Android switch thumb can be customized by using material icon and defining drawable xml resource.In my app, I have to automatically set the background color of a ListView item, based on the string content of a given list view item. The above code was working fine, so the background color of a given list view item was changing to green and the rest of the list view items to the default color which is blackuntil the list view added a vertical scroll to it.
Consequently, I can't access anymore the items from the list view based on their position. Please note that the list view item can have the green background if some conditions are meet but then it can also change to the black background if other conditions are meet. So one list item will change its background color depending on some conditions that the app will raise, that is why the app uses the "itemFromList" parameter in "UpdateListView" method. Based on Track post, and some more research about how list view is recycling the items, I think that I got a workaround.
What is Xamarin. January in Xamarin. GetPosition itemFromList ; listView. GetChildAt itemListPosition ; if child! GetChildAt i ; if otherChild! SetBackgroundColor Color. SimpleListItem1, settingItems ; listView. GetChildAt itemListPosition ; child object from the above call is null. I am quite new to Xamarin so I hope that it can be an easy thing to achieve this UI behavior. Do you know how can I work around this? Tagged: listview android layout c xamarin.
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I'm looking for a method of programmatically changing the state of an Android Switch widget using switch. My first thought was to swap it out for an OnClickListener but as this only registers clicks and you are able to not only click but also slide a Switch then it's not really fit for purpose as if the user was to slide the Switch from off to on then the Switch would actually do nothing as the user is not clicking If anyone's got a solution or a smart work around for this, that would be awesome.
Well, just before doing things in code with the switch you could just unregister the Listener, then do whatever you need to, and again register the listener. Set the listener to null before calling setCheck function, and enable it after that, such as the following:. Reference : Change Checkbox value without triggering onCheckChanged.
I have one solution and its working fine at my end. In this way setOnCheckedChangeListener is getting called only when check changed happens by human intervention by drag, by click, by touch. Also don't forgot to add your valid string tag not null when your trying to change check status of switch control.
Learn more. Android - programmatically change the state of a switch without triggering OnCheckChanged listener Ask Question. Asked 5 years, 7 months ago. Active 12 months ago. Viewed 35k times. Paul Alexander Paul Alexander 2, 2 2 gold badges 26 26 silver badges 51 51 bronze badges. Please use below line of code. Active Oldest Votes. How would you go about unregistering the listener?
I think there are two options: 1. As long as 'listener' is a reference to your listener object, yes. That would have been my approach to work this around though there my be better solutions.
How did you re-register the listener? Set the listener to null before calling setCheck function, and enable it after that, such as the following: switch. Mahmoud Ibrahim Mahmoud Ibrahim 8 8 silver badges 18 18 bronze badges.
Chetan Bhoyar Chetan Bhoyar 4 4 silver badges 12 12 bronze badges. Thanks for this solution, helped me a lot!! Just add a check in your listener before starting the actual logic: if compoundButton. From krisDrOid answer.
Working great, genious!