Does any body know how to set style for TextView at run time:
something like this
myTextView.setStyle(R.style.mystyle);
Very easy just use setTextApparence and your style
myTextView.setTextAppearance(getApplicationContext(), R.style.boldText);
you will have to manually set each element of the style that you change, there is no way to setStyle at run time, AFAIK.
myTextView.setTextAppearance
myTextView.setTextSize
myTextView.setTextColor
I also still did not find (sadly) a way to change Style at runtime.
If it is just about changing the checkbox appearance (as you mention in a comment of another answer), you can use this:
myCheckbox.setButtonDrawable(R.drawable.star_checkbox);
And have a star_checkbox.xml file in the drawable directory describing the checkbox background according to its states such as:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true" android:state_focused="true"
android:drawable="#drawable/star_checkbox_checked_focused" />
<item android:state_checked="false" android:state_focused="true"
android:drawable="#drawable/checkbox_not_checked_focused" />
<item android:state_checked="false"
android:drawable="#drawable/checkbox_not_checked" />
<item android:state_checked="true"
android:drawable="#drawable/checkbox_checked" />
</selector>
Also you need the corresponding png files in you drawable directory.
I am trying myself to do a similar thing.
My reason is that I want to use a style from my own Theme, BUT my User Interface Layout is entirely generated in code( using a custom layout builder), without defining any widgets in XML. So I cannot set a style in the XML layout of my widget – there isn’t any XML layout.
I am thinking that I will be able to set this style in the code of my widget by using
TypedArray a =
context.obtainStyledAttributes(AttributeSet
set, int[] attrs, int defStyleAttr, int defStyleRes)
Here it seems (to me) that
AttributeSet set = null; because this is what the XML inflater would have provided.
int[] attrs = R.styleable.MyWidget; defines what attributes I want to look at.
int defStyleAttr = myWidgetStyle; which is a reference, defined in my Theme, to a style for MyWidget. These are both defined in XML files in res/values.
“myWidgetStyle” follows the pattern of name the android developers have used in their code.
defStyleRes = 0; I am hoping that I don’t need to think about this.
Then to get any property , such as a background color,
Color color = a.getColor(R.styleable.MyWidget_background, R.color.my_default);
a.recycle();
This does seem to work –so far anyway.
It seems that the android build system conveniently generates the correct index to use in a.getColor, and names it R.styleable.MyWidget_background . I didn’t make this name myself so Android must have done it using my XML for my styleable MyWidget.
I expect one can look up the correct index by searching the TypedArray for the required attribute , but that would be inefficient and the TypedArray looks like an unpleasant contraption to deal with. I would use a very long stick to poke it!
Don
TextView (Context context, AttributeSet attrs, int defStyle)
Although there is construction available but it seems its buggy, I tried this and found specified style won't apply on my view.
After searching further got this filed bug: http://code.google.com/p/android/issues/detail?id=12683
To workaround this issue I am using setBackgroundResource, setTextAppearance, etc methods dramatically :)
Related
I have the following menu item:
<item
android:id="#+id/lock"
android:checkable="true"
android:title="#string/lock" >
<menu>
<item
android:id="#+id/block_mess"
android:checked="true"
android:icon="#drawable/chantinnhan"
android:title="#string/block_mess_string" />
<item
android:id="#+id/block_call"
android:checked="false"
android:icon="#drawable/chancuocgoi"
android:title="#string/block_call_string" />
<item
android:id="#+id/lock_app"
android:checked="false"
android:icon="#drawable/khoaungdung"
android:title="#string/lock_app_string" />
</menu>
</item>
...there's still more but it's really long
but the icon is really small (even it has res 256x256). I'd like to make it bigger! Is this possible?
Here's the screenshot:
EDIT: OK, we both know that Google "lock" the icon size. But I want to know that can I "bypass" that lock and make something... customizable?
You can change the size of navigationView icon by overriding design_navigation_icon_size attribute. You can put it in dimens and because you're overriding a private attribute, you need to include tools:override="true"
<dimen name="design_navigation_icon_size" tools:override="true">40dp</dimen>
Got Solution
Make Below entry in dimens.
<dimen name="design_navigation_icon_size">48dp</dimen>
In your xml file the shortest way is there is a property in NavigationView
Just add it .
app:itemIconSize="12dp"
The main thing that decide the icon's size is the dimension:navigation_icon_size, have a look at the NavigationMenuItemView class:
public NavigationMenuItemView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.mIconSize = context.getResources().getDimensionPixelSize(dimen.navigation_icon_size);
}
so, we can just overide the property in our dimens file.
For example:
<dimen name="navigation_icon_size">48dp</dimen>
add that code in the dimens file, and you can find it's size changed.
Before:
After:
According to the the design document set by Google itself, icons should be set to 14sp. I suggest you abide by this recommendation, since this is a standard used throughout all apps. As you said, there are no apps which have large icons in the navigation drawer, as this is not the norm when developing a navigation drawer icon.
My app has several themes from which the user can chose (red, blue, green etc.) Every theme has a corresponding button style (RedTheme => RedButton).
Now I have created a custom view which slightly extends "Button" and unfortunately this button does not get any style, except I use the "style" attribute in a layout.xml.
I don’t use any additional attributes, I just want that my Button style is applied.
I want to do something similar than:
<item name="android:imageButtonStyle">#style/ImageButtonmyTimeRed</item>
I have already read many other posts like this one:
How to: Define theme (style) item for custom widget
but I’m not 100% sure if this solution fits for me since I don’t need any additional attributes.
I'm using the three parameter super constructor and pass the button style resource id. This works for all my custom themes. Thanks #pskink for pointing me into right direction.
public ClockButton(Context context, AttributeSet attrs) {
super(context, attrs, R.attr.buttonStyle);
...
}
My theme looks like this:
<style name="LilaTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="buttonStyle">#style/ButtonmyTimeLila</item>
</style>
One can create a SeekBar in XML as follows...
<SeekBar xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/bpseekbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="3dp"
android:max="100"
android:maxHeight="8dp"
...
Now I want to do this programmatically since I need to adjust maxHeight based on screen resolution (yes, I know one shouldn't do that, but I have my valid reasons for this). I have no problems with setting the parameters programmatically except that I can't find out how to set maxHeight. I feel like I need to use Attributes but I couldn't find exactly how. Any hints?
It's not directly possible. SeekBar (actually ProgressBar which SeekBar extends) gets maxHeight only from XML layout attributes, there's no corresponding method.
Additionally, ProgressBar increases its maxHeight in call to setProgressDrawable to be at least height of the drawable. You may utilize this.
Another possibility is to extend SeekBar and provide own onMeasure method. This is actually where maxHeight is used. You can then use your extended SeekBar in xml layout.
The best way to set the maxHeight of seekBar programmatically is to use the fourth constructor SeekBar(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes), follow steps below:
define a style in values/style.xml;
<style name="SeekBarDefaultStyle">
<item name="android:maxHeight">1dp</item>
<item name="android:indeterminateOnly">false</item>
<item name="android:focusable">true</item>
<item name="android:mirrorForRtl">true</item>
</style>
construct the SeekBar like this: mSeekBar = new SeekBar(context, null, 0, R.style.SeekBarDefaultStyle);
BTW, google decides to support the method of setMaxHeight in API 29: https://developer.android.com/reference/android/widget/ProgressBar.html#setMaxHeight(int)
I'm having a slight issue with the Light theme and a fast scrolling ListView. As you can see in the image below, when using the Light theme the pop up for the current letter when dragging the scroll bar contains black text on a dark gray background, making it very hard to read and just look ugly.
If I override android:textColorPrimary in a Theme it changes color, but so do all the items in the ListView, as well as other UI elements elsewhere in the app, so it's not a viable solution.
I'm using GreenDroid and it's associated classes, but looking through the source code, it seems to just use a standard ListView so is unlikely to be the issue.
I also found this question, which makes it seem likely that it's not a GreenDroid issue, but unfortunately the solution given by the author in a comment doesn't explain in enough detail how to fix it.
Any ideas as to how to solve this?
Thanks,
Daniel
The easiest way to do this is to define a special Theme that you apply only to the ListActivity, like this.
<style name="Theme.MyApp" parent="#style/Theme.GreenDroid.Light.NoTitleBar">
...
</style>
<style name="Theme.MyApp.TweakedItems" parent="#style/Theme.MyApp">
...
<!-- Default color for Android Dark Theme -->
<item name="android:textColorPrimary">#android:color/primary_text_dark</item>
</style>
Then you can modify any ItemView from GreenDroid to apply a different color.
<?xml version="1.0" encoding="utf-8"?>
<greendroid.widget.itemview.TextItemView
xmlns:android="http://schemas.android.com/apk/res/android"
style="?attr/gdTextItemViewStyle"
android:id="#+id/gd_text"
android:layout_height="?attr/gdItemViewPreferredHeight"
android:minHeight="?attr/gdItemViewPreferredHeight"
android:paddingLeft="?attr/gdItemViewPreferredPaddingLeft"
android:singleLine="true"
android:ellipsize="end"
android:gravity="center_vertical"
android:textColor="#000000" />
Starting from API Level 11 you can change the color using fastScrollTextColor
i've found an answer here:
https://gist.github.com/DHuckaby/d6b1d9c8e7f9d70c39de
public class CustomListView extends ListView {
public CustomListView(Context context, AttributeSet attrs) {
super(new ContextThemeWrapper(context, R.style.CustomListView), attrs);
}
}
styles.xml
<resources>
<style name="CustomListView" parent="#style/GlobalTheme">
<item name="android:textColorPrimary">?android:textColorPrimaryInverse</item>
</style>
</resources>
I'm trying to use the TextView constructor with style like this:
TextView myText = new TextView(MyActivity.this, null, R.style.my_style);
However, when I do this, the text view does not appear to take the style (I verified the style by setting it on a static object).
I've also tried using myText.setTextAppearance(MyActivity.this, R.style.my_style) but it also doesn't work.
I do not believe you can set the style programatically. To get around this you can create a template layout xml file with the style assigned, for example in res/layout create tvtemplate.xml as with the following content:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="This is a template"
style="#style/my_style" />
then inflate this to instantiate your new TextView:
TextView myText = (TextView)getLayoutInflater().inflate(R.layout.tvtemplate, null);
You can create a generic style and re-use it on multiple textviews like the one below:
textView.setTextAppearance(this, R.style.MyTextStyle);
Edit: this refers to the Context object.
You can pass a ContextThemeWrapper to the constructor like this:
TextView myText = new TextView(new ContextThemeWrapper(MyActivity.this, R.style.my_style));
You can set the style in the constructor (but styles can not be dynamically changed/set).
View(Context, AttributeSet, int) (the int is an attribute in the current theme that contains a reference to a style)
Answer from Romain Guy
reference
Parameter int defStyleAttr does not specifies the style. From the Android documentation:
defStyleAttr - An attribute in the current theme that contains a
reference to a style resource that supplies default values for the
view. Can be 0 to not look for defaults.
To setup the style in View constructor we have 2 possible solutions:
With use of ContextThemeWrapper:
ContextThemeWrapper wrappedContext = new ContextThemeWrapper(yourContext, R.style.your_style);
TextView textView = new TextView(wrappedContext, null, 0);
With four-argument constructor (available starting from LOLLIPOP):
TextView textView = new TextView(yourContext, null, 0, R.style.your_style);
Key thing for both solutions - defStyleAttr parameter should be 0 to apply our style to the view.
Dynamically changing styles is not supported (yet). You have to set the style before the view gets created, via XML.
When using custom views that may use style inheritance (or event styleable attributes), you have to modify the second constructor in order not to lose the style. This worked for me, without needing to use setTextAppearence():
public CustomView(Context context, AttributeSet attrs) {
this(context, attrs, attrs.getStyleAttribute());
}
The accepted answer was great solution for me. The only thing to add is about inflate() method.
In accepted answer all android:layout_* parameters will not be applied.
The reason is no way to adjust it, cause null was passed as ViewGroup parent.
You can use it like this:
View view = inflater.inflate(R.layout.view, parent, false);
and the parent is the ViewGroup, from where you like to adjust android:layout_*.
In this case, all relative properties will be set.
Hope it'll be useful for someone.
I met the problem too, and I found the way to set style programatically. Maybe you all need it, So I update there.
The third param of View constructor accepts a type of attr in your theme as the source code below:
public TextView(Context context, AttributeSet attrs) {
this(context, attrs, com.android.internal.R.attr.textViewStyle);
}
So you must pass a type of R.attr.** rather than R.style.**
In my codes, I did following steps:
First, customize a customized attr to be used by themes in attr.xml.
<attr name="radio_button_style" format="reference" />
Second, specific your style in your used theme in style.xml.
<style name="AppTheme" parent="android:Theme.Translucent">
<!-- All customizations that are NOT specific to a particular API-level can go here. -->
<item name="radio_button_style">#style/radioButtonStyle</item>
</style>
<style name="radioButtonStyle" parent="#android:style/Widget.CompoundButton.RadioButton">
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">64dp</item>
<item name="android:background">#000</item>
<item name="android:button">#null</item>
<item name="android:gravity">center</item>
<item name="android:saveEnabled">false</item>
<item name="android:textColor">#drawable/option_text_color</item>
<item name="android:textSize">9sp</item>
</style>
At the end, use it!
RadioButton radioButton = new RadioButton(mContext, null, R.attr.radio_button_style);
the view created programatically will use the specified style in your theme.
You can have a try, and hope it can work for you perfectly.
We can use TextViewCompact.setTextAppearance(textView, R.style.xyz).
Android doc for reference.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
textView.setTextAppearance(R.style.yourStyle)
you can use Extension Functions kotlin
fun TextView.setStyle(#StyleRes resId: Int) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
setTextAppearance(resId)
} else {
setTextAppearance(context, resId)
}
}
I have only tested with EditText but you can use the method
public void setBackgroundResource (int resid)
to apply a style defined in an XML file.
Sine this method belongs to View I believe it will work with any UI element.
regards.