I'm building a custom keyboard by modifying the android softkeyboard sample from the SDK. I want to change the images of the buttons and the backgrounds but I can't figure out where those values are stored. Where are they stored or how can i change the image or simply color?
in onClick method you need to change the Button's image, this way..
public void onClick(View v) {
if(v==buttonName){
buttonName.setBackgroundResource(R.drawable.imageName);
}
}
The keyboard background color can be changed in input.xml using android:background
You need to edit the file res/xml/qwerty.xml.
You can check the documentation for Keyboard and the Keys. The last one defines what is shown on the keys (does not look like you can change the background though).
You need to edit the file
res/layout/input.xml
A sample input.xml could look like this.
<com.example.keyboard.LatinKeyboardView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/keyboard"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#drawable/keyboardbackground"
android:keyBackground="#drawable/samplekeybackground"
android:keyPreviewLayout="#layout/input_key_preview"
android:keyTextcolor="#android:color/black"/>
there are few more attributes that can be found in the KeyboardView documentation.
Related
I am trying to make something like this example:
I want the drawable to show when I verify the user name from the server.
I am using Material Design Text Input Field & EditText. Yes, I can do it with a simple EditText and an ImageView, but I want to use the standard elements.
I have looked at the official documentation, there is a way to add the image at the Right corner using XML, but I want to add it programmatically.
Use the setEndIconDrawable method:
textInputLayout.setEndIconDrawable(R.drawable.xxxx);
textInputLayout.setEndIconMode(TextInputLayout.END_ICON_CUSTOM);
or in a layout:
<com.google.android.material.textfield.TextInputLayout
app:endIconDrawable="#drawable/xxxxx"
app:endIconMode="custom"
More info in the official doc.
You need to to set your drawable programmatically like below
inputTextEditText.setCompoundDrawablesWithIntrinsicBounds(null, null, ContextCompat.getDrawable(context,R.drawable.drawableRight), null)
I've been working on my android calculator and i can't seem to insert an image instead of text on a button. For example sqrt I don't want to have sqrt written on my button i want the image of the symbol on it, the same goes for x^y and alot of others. I have my custom background of the button working just fine. Thank you for your help in advance :)
EDIT:
Thats not what i wanted i did manage to get my custom button and thats fine. On my button since its a calculator button i have android:text on it saying sqrt. I want to remove that and insert another png on my button showing the symbol of the square root instead of that text. Thank you for quick responses.
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableTop="#drawable/imageName"/>
You can have both text and image (or no text) when using the attribute drawableTop, drawableBottom, drawableLeft and drawableRight.
And for positioning the image how you want, consider using: paddingTop, paddingBottom, paddingLeft and paddingRight.
You can do this by ImageButton:
<ImageButton
android:id="#+id/submitEmailButton"
android:layout_height="wrap_content" android:layout_width="wrap_content"
android:layout_gravity="right" android:layout_marginRight="15dip"
android:background="#drawable/ic_submit" />
Here ic_submit is the image you want to show as a button.
I used this tutorial and it worked perfectly for me: http://www.mkyong.com/android/android-imagebutton-selector-example/
I haven't seen your code but basically you should remove the "text" tag from your xml and it should appear the image without text then.
I don't know if that's exactly what you were looking for or not, but I reccomend you to follow the tutorial and for sure it will work for you ;)
There are a number of alternatives you can try to implement to build your SQRT button:
draw the button as a 9-patch drawable so your SQRT symbol won't get distorted;
use a RelativeLayout with a button inside and implement a selector
You can simply set background for the Button and keep its text blank.
I want to create icons as something like this image or something like on the homepage of quickr. If I use custom gridview for this as in this (of course in my case I need the text below the image ), then adding listeners to that would be difficult I guess. Should I use buttons for that with the image and text below that provided the background is transparent? If so which layout I need to use? Or is there any icon view facility in android like other views such as button and imageviews, so that we can modify as per our requirement.
You should use button for that.
<Button
android:id="#+id/btnIconName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableTop="#drawable/iconimage"
android:text="IconTitle" />
For showing icon you should use android:drawableTop and for iocnTitle use android:text
Property.
I hope my answer is helpful to you.
GridView will be the best option to do this and why dont you ask your graphics guy to add text with image.
I want to customize Buttons for my application. The application has a color picker where the user will select color and I have to set that particular start/end color to the buttons. These colro values will be stored in an object "Utility".
Basically from start only, I want to use "Utility" object to set colors for background, text color, font, etc. And again when the color is changed by the user I got to change it to the buttons and refresh them. And also to save colors in a file, so next time user starts app, it comes up with the last color selected.
I couldn't find <selector> to be the best option, as I wont be able to change the color in xml. What can be the best option for such requirement ?
UPDATIONS :
#jitendra, from your answer I got somethign helpful. I use GradientDrawable to set colors of my buttons. In my onCreate() of the Activity, I call a method RefreshComponents() that sets the background of root, text color/size of buttons and gradient colors of the buttons. It works properly, but the only problem I see is the on applying GradientDrawable to the button the gap between 2 buttons is lost.
This is the image WITHOUT applying GradientDrawable :
On applying GradientDrawable the output is :
You see the size of button is increased a bit from all the sides. If I apply to next button also, they both touch eachother. My xml for the above is :
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mainroot" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:orientation="vertical"
android:paddingTop="35dip" android:paddingBottom="35dip"
android:paddingLeft="35dip" android:paddingRight="35dip"android:gravity="center" >
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mainrow1" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:orientation="horizontal"
android:layout_marginBottom="15dip" android:gravity="center_horizontal" >
<Button android:text="Accounting" android:id="#+id/accBtn" android:layout_width="80dip" style="#style/TileButtonStyle" />
<Button android:text="Data" android:id="#+id/dataBtn" android:layout_width="80dip" android:layout_height="fill_parent"></Button>
<Button android:text="Information" android:id="#+id/infoBtn" android:layout_width="80dip" android:layout_height="fill_parent" android:ellipsize="end"></Button>
</LinearLayout>
..... Other lineasr layout with same parameters as above child
And the GradientDrawable that I create is :
public static GradientDrawable getButtonDrawable(Button btn) {
int colors[] = {getStartColor(), getEndColor()};
GradientDrawable grad = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, colors);
grad.setCornerRadius(5f);
return grad;
}
And finally in my onCreate(), I add :
GradientDrawable btnGradient = Utility.getButtonDrawable(btn1);
btn1.setBackgroundDrawable(btnGradient);
What is going wrong here ? Is the margin around the button becoming 0 ? Do I have to set bounds for the grad, or again set LayoutParams for the button ?
Any help is appreciative to help me achieve my goal.
Thanks
You can Create StateListDrawable Object dynamically in java file and set as background and sources of applcation components.
Android has Themes and Styles, but they are a development-time feature and can't be manipulated at runtime. However, different predefined themes can be applied at runtime.
So you can have a set of predefined themes, with fixed view properties (colors, fonts, etc..) and give user an option to choose a theme at runtime.
But, if you need to change every particular view property, then you will need to roll your own "theme" system. Which means you will need to have properties stored somewhere and applied each time a view is built.
Tvd! I incline to agree with Peter Knego and Jitender Sharma. Furthermore, I think/believe you can setOnClickListener on those buttons of yours and perform your color changing stuff with the code that rests inside the setOnClickListenermethod assigned to every button. In addition to this, you'll have to configure your color.xml file and custom themes. There's a lot of work to be done. I'm not really sure which is the best way though. I strongly suggest you to go through the android learning stuff I'd provided to you in my previous answer. Only they can give you a detailed insight and a solid idea to go ahead. All the best!
Oh I got the solution :
I added layout_marginRight attribute to buttons and that did the work.
Though I am still concerned, without GradientDrawable the buttons had margin betweenthem then after applying GradientDrawable why is the default margin lost ? Why is the need of additional layout_marginRight to be added ?
If anyone yet has answer for this, please let me know.
Thanks
I am trying to, somewhat clone the design of an activity from a set of slides on Android UI design. However I am having a problem with a very simple task.
I have created the layout as shown in the image, and the header is a TextView in a RelativeLayout. Now I wish to change the background colour of the RelativeLayout, however I cannot seem to figure out how.
I know I can set the android:background property in the RelativeLayout tag in the XML file, but what do I set it to? I want to define a new colour that I can use in multiple places. Is it a drawable or a string?
Additionally I would expect there to be a very simple way to this from within the Eclipse Android UI designer that I must be missing?
I am a bit frustrated currently, as this should be an activity that is performed with a few clicks at maximum. So any help is very appreciated. :)
You can use simple color resources, specified usually inside res/values/colors.xml.
<color name="red">#ffff0000</color>
and use this via android:background="#color/red". This color can be used anywhere else too, e.g. as a text color. Reference it in XML the same way, or get it in code via getResources().getColor(R.color.red).
You can also use any drawable resource as a background, use android:background="#drawable/mydrawable" for this (that means 9patch drawables, normal bitmaps, shape drawables, ..).
The above answers are nice.You can also go like this programmatically if you want
First, your layout should have an ID. Add it by writing following +id line in res/layout/*.xml
<RelativeLayout ...
...
android:id="#+id/your_layout_id"
...
</RelativeLayout>
Then, in your Java code, make following changes.
RelativeLayout rl = (RelativeLayout)findViewById(R.id.your_layout_id);
rl.setBackgroundColor(Color.RED);
apart from this, if you have the color defined in colors.xml, then also you can do programmatically :
rl.setBackgroundColor(ContextCompat.getColor(getContext(), R.color.red));
You can use android:background="#DC143C", or any other RGB values for your color. I have no problem using it this way, as stated here
The
res/values/colors.xml.
<color name="red">#ffff0000</color>
android:background="#color/red"
example didn't work for me, but the
android:background="#(hexidecimal here without these parenthesis)"
worked for me in the relative layout element as an attribute.
If you want to change a color quickly (and you don't have Hex numbers memorized) android has a few preset colors you can access like this:
android:background="#android:color/black"
There are 15 colors you can choose from which is nice for testing things out quickly, and you don't need to set up additional files.
Setting up a values/colors.xml file and using straight Hex like explained above will still work.
4 possible ways, use one you need.
1. Kotlin
val ll = findViewById<LinearLayout>(R.id.your_layout_id)
ll.setBackgroundColor(ContextCompat.getColor(this, R.color.white))
2. Data Binding
<LinearLayout
android:background="#{#color/white}"
OR more useful statement-
<LinearLayout
android:background="#{model.colorResId}"
3. XML
<LinearLayout
android:background="#FFFFFF"
<LinearLayout
android:background="#color/white"
4. Java
LinearLayout ll = (LinearLayout) findViewById(R.id.your_layout_id);
ll.setBackgroundColor(ContextCompat.getColor(this, R.color.white));
Android studio 2.1.2 (or possibly earlier) will let you pick from a color wheel:
I got this by adding the following to my layout:
android:background="#FFFFFF"
Then I clicked on the FFFFFF color and clicked on the lightbulb that appeared.
Kotlin
linearLayout.setBackgroundColor(Color.rgb(0xf4,0x43,0x36))
or
<color name="newColor">#f44336</color>
-
linearLayout.setBackgroundColor(ContextCompat.getColor(vista.context, R.color.newColor))
The answers above all are static. I thought I would provide a dynamic answer. The two files that will need to be in sync are the relative foo.xml with the layout and activity_bar.java which corresponds to the Java class corresponding to this R.layout.foo.
In foo.xml set an id for the entire layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:id="#+id/foo" .../>
And in activity_bar.java set the color in the onCreate():
public class activity_bar extends AppCompatActivty {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.foo);
//Set an id to the layout
RelativeLayout currentLayout =
(RelativeLayout) findViewById(R.id.foo);
currentLayout.setBackgroundColor(Color.RED);
...
}
...
}
I hope this helps.