I need to set a background color to every activitity in my app. I would prefer to set it globally. For this reason I change the style setted as application theme.
<resources xmlns:android="http://schemas.android.com/apk/res/android">
<style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
<item name="android:background">#color/app_bg</item>
</style>
</resources>
The problem is that now all ImageViews and TextViews that have not a specified Background get the app background and not the background of parent Layout, for example
<RelativeLayout
android:id="#+id/mmc_rl"
android:layout_width="match_parent"
android:layout_height="#dimen/mm_central_height"
android:background="#color/main_menu_central_bg">
<ImageView
android:id="#+id/mmc_iv_goto"
android:layout_width="#dimen/mm_central_height"
android:layout_height="#dimen/mm_central_height"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:src="#drawable/button_goto_big3" />
</RelativeLayout>
The ImageView has the background app_bg and not main_menu_central_bg as expected. How can I solve this problem?
include this line on the ImageView xml:
android:background="#android:color/transparent"
Related
In order to use Chip and ChipGroup, I set Application style extends Theme.MaterialComponents.Light.NoActionBar int manifests.xml, then I set Button "android:background" attr, but it does not effect! why? and what can I do?
This is my style:
<style name="AppBaseTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
<item name="colorPrimary">#color/primary_material_light</item>
<item name="colorPrimaryDark">#color/header_color</item>
<item name="actionBarSize">48dp</item>
<item name="android:screenOrientation">portrait</item>
<!--<item name="buttonStyle">#style/AntButton</item>-->
<!--<item name="materialButtonStyle">#style/AntButton</item>-->
<!--<item name="android:button"></item>-->
<!--<item name="android:progressTint">#color/ffc000</item>-->
<item name="colorAccent">#color/ffc000</item>
</style>
<style name="AntButton" parent="android:Widget">
<item name="android:background">#drawable/abc_btn_default_mtrl_shape</item>
<item name="android:textAppearance">?android:attr/textAppearanceButton</item>
<item name="android:minHeight">48dip</item>
<item name="android:minWidth">88dip</item>
<item name="android:focusable">true</item>
<item name="android:clickable">true</item>
<item name="android:gravity">center_vertical|center_horizontal</item>
<!--<item name="android:colorButtonNormal">#color/white</item>-->
</style>
I have tried to change buttonStyle and materialButtonStyle, but not effect too!
this is my layout XML:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/ll_popup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="#color/white"
android:divider="#drawable/shape_divider_05dp"
android:orientation="vertical"
android:showDividers="beginning|middle">
<!--only can use backgroundTint to change background color-->
<Button
android:id="#+id/item_popupwindows_Photo"
android:layout_width="match_parent"
android:layout_height="55dp"
android:backgroundTint="#color/white"
android:text="Pictrue"
android:textColor="#color/c_666666"
android:textSize="16sp" />
<!--background not effect !!-->
<Button
android:id="#+id/item_popupwindows_cancel"
android:layout_width="match_parent"
android:layout_height="55dp"
android:background="#color/white"
android:text="cancel"
android:textColor="#color/c_666666"
android:textSize="16sp" />
</LinearLayout>
</LinearLayout>
this is result :
Because I have used Chip and ChipGroup in APP, I have to user theme extends MaterialComponents! do you know how to resolve it ？please tell me, thanks!
in this page Can't use android:background with button from the new material components, the author wants to change the default padding, but I want to change the backgroundDrawable, so, it does not work for me.
If you want a true Button, but one that you can modify like the framework Button (instead of the MaterialButton), then you can explicitly specify the framework version in your layout file. Replace this:
<Button
android:id="#+id/item_popupwindows_cancel"
... />
with this:
<android.widget.Button
android:id="#+id/item_popupwindows_cancel"
... />
This will give you what it says on the tin: an android.widget.Button, which should respond to styling the way you expect.
Similarly, you could use a <androidx.appcompat.widget.AppCompatButton> if you want support library features but not material components features.
In this particular case, the LinearLayout holding your second Button seems to have a white background color. That means you don't need to explicitly specify a white background for your Button; you can just let the LinearLayout's background show through.
This can be accomplished by using the "Text Button" style of MaterialButton:
style="#style/Widget.MaterialComponents.Button.TextButton"
Use this code for change the color
app:backgroundTint="#color/primaryColor"
You can also use ImageButton instead of Button from material components. android:background is working on ImageButton.
<ImageButton
android:id="#+id/item_popupwindows_cancel"
... />
When user opens any application by clicking on app icon, the app starts with mainactivity.java. and its xml layout is shown to user.
I am making a splash screen with simple background color and text. But what my problem is, when it starts it shows a default layout color for a very little fraction of time and then it draws my given color. I do not want default color to be there even for that small fraction of time.
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.rushi.demon.MainActivity"
android:background="#color/SplashScreen" >
<RelativeLayout
android:id="#+id/SplashScreen"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/SplashScreen">
<TextView
android:id="#+id/SplashText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:text="#string/splash_name"
android:textColor="#color/SplashText"
android:textSize="40sp"
android:textStyle="bold"/>
</RelativeLayout>
</android.support.constraint.ConstraintLayout>
The SplashScreen color is shown after a lag and starting default color is shown for little time, which i do not want. I want to open this activity with my set color only from starting.
Add this to your AppTheme (theme of MainActivity) ..
<item name="android:windowDisablePreview">true</item>
Edit
Go to app -> res -> values -> styles.xml open styles.xml there you do this to the theme you have..
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
<item name="android:windowDisablePreview">true</item> //add this line
</style>
The best way to achieve this is well described here, By this way Splash Activity will start instantly
Refer this: https://medium.com/#ssaurel/create-a-splash-screen-on-android-the-right-way-93d6fb444857
This question already has answers here:
set background Image to whole application in android
(2 answers)
Closed 6 years ago.
How to Set an image as a background for whole activities in an android application? ( I know how to set it for each activity. I want to know is there any way to write one line of code that can affect all activities?)
You can do this:
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
<!-- Customize your theme here. -->
<item name="android:windowBackground">#drawable/PICTURE_NAME</item>
</style>
define it in your theme in style.xml
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="android:background">#drawable/</item>
</style>
Put your image file .png in the drawables file and do this in all your xml layouts for all your activities
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:orientation="vertical"
android:clipToPadding="false"
android:paddingBottom="4dp"
android:background="#drawable/yourImage"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
Well, depending on how many activities you have, you would need to set background attribute to each of the activities' root element like this:
<LinearLayout
...
...
android:background="#drawable/background_image"
</LinearLayout>
I have used LinearLayout as an example above. You should replace it with whatever is your root element in your activity layout file!
I hope this helps!
First of all, this is the code I use for ListView
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:contentDescription="#string/top_layer"
android:id="#+id/top_layer_Q1"
android:layout_width="fill_parent"
android:src="#drawable/top_bar"
android:layout_alignParentTop="true"
android:layout_height="wrap_content" />
<ListView
android:id="#+id/Quotelist1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
In order to test the code, I created a temporary project in Studio, and the Output I got was Black text in white background. And when I added the same code to the project I am working, I get the output with a Black Background and white text.
Though I did not change any code, what might be causing this? What is the best fix for this?
Thanks,
EDIT1
Here is the styles.xml
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
</style>
Try this:
Add this to your style.xml
<style name="ListStyle" parent="#android:style/Widget.ListView">
<item name="android:textColor">#FF000000</item>
<item name="android:background">#FFFFFFFF</item>
</style>
Then set it as the style for your listView
style="#style/ListStyle"
I have defined a custom theme, where I am drawing a dark gradient on my window background. My ListView background is set to be transparent, however whenever I scroll, the background color turns black, and then after scrolling has stopped, goes back to the gradient color. Why is this?
<?xml version="1.0" encoding="utf-8"?>
<resources>
<!-- Base application theme is the default theme. -->
<style name="Theme" parent="android:Theme">
</style>
<!-- Variation on our application theme that has a translucent
background. -->
<style name="Theme.DarkGradient">
<item name="android:windowBackground">#drawable/dark_gradient</item>
</style>
</resources>
Your question is answered here: http://developer.android.com/resources/articles/listview-backgrounds.html
You just need to set the cacheColorHint in order to fix your problem. :-)
Just set cacheColorHint="#00000000" in your xml listView its a transparent color
<ListView android:id="#id/android:list" android:layout_width="320dp"
android:layout_height="fill_parent" android:layout_centerHorizontal="true"
android:divider="#color/whitetxtcolor"
android:layout_weight="2" android:drawSelectorOnTop="false"
android:layout_below="#id/new_layout"
android:cacheColorHint="#000000"
></ListView>
or U can do like this also
this.getListView.setCacheColorHint(0);