Theme Android

In the following step, you will learn how to create an app that can toggle between several different topics. By the end of this lesson, you will better understand some of Android's key functions, such as - character tables, style, and topics. To get a more general idea of these ideas, take a look at the clip notes style and theming.

In Android, a look is a set of attribute/value pairings that are used on a look. For example, a template is an object that contains a template and divides the template properties from the underlying HTML format. Style in Android is similar in conceptual terms to CSS on the web because it divides your designs from their contents. Topic is a theme that is valid for the whole task or a specific task.

We' ll create several topics in our application and alternate between them with a freakscreen. At the end of this tutorial, you should know how to specify a topic in your resource in an XML document, how to specify topic properties, how to assign them to your page layouts, and how to modify the topic of an action in a dynamic way.

Go to Android Studio and go to Files -> New Project. Rename the first action to "ThemeActivity" Keep other standard choices, click Next until you get to Finish. Later, we will apply all our style and design to this layoutsheet. Append the following to res/values/strings. xml: "app_name" "settings_text_select_theme" Choose theme: "settings_text_credentials" Join "settings_text_username_hint" "settings_text_password_hint" "settings_text_sync_automatically" "settings_text_location" "settings_text_state_on" "settings_text_state_off" "settings_text_clear_data" Let's also join res/values/strings. Let's just say we' ll be adding all the topics we can pick from the lunatic.

Do not hesitate to substitute your CUSTOMER NAME with a topic name of your choosing. "theme_array " and go to the register card xpml. comment/outils" "match_parent" "match_parent" "match_parent" "@+id/tvSelectTheme" "wrap_content" "wrap_content" "wrap_content" "@string/settings_text_select_theme" "@+id/spThemes" "wrarap_content". "wrap_content" "@+id/tvSelectTheme" "true" "@+id/tvSelectTheme" "@+id/tvSelectTheme" "@array/theme_array" "dropdown" "@+id/rlCredentials" "wrap_content" "wrap_content" "wrap_content" "wrap_content" "wrap_content" "@+id/tvSelectTheme". "</tvCredentials" "wrap_content" "wrap_content" "@string/settings_text_credentials" "@+id/tvUsername" "match_parent" "wrap_content" "@+id/tvCredentials". "User_name_hint" "text" "1" "@+id/tvpassword" "match_parent" "wrap_content" "@+id/tvUsername" "@string/Settings_text_password_hint" "textPassword" "1" "@+id/tvSync".

"wrap_content" "wrap_content" "wrap_content" "@+id/rlCredentials" "@string/settings_text_sync_automatically" "17sp" "@+id/checkbox_sync_automatically" "wrap_content" "wrap_content" "wrap_content" "wrap_content". "</tvSync" "true" "true" "@+id/tvLocation" "wrap_content" "wrap_content" "@+id/tvSync" "@string/settings_text_location" "17sp" "@+id/toggle_google" "wrap_content". "wrap_content " "@+id/tvLocation" "true" "@+id/tvLocation" "@string/settings_text_text_state_off" "@string/settings_text_state_on" "@+id/btnClearData" "wrap_content" "wrap_content" "true" "true" "@string/settings_text_clear_data" Please notice that the nut is linked to the strings and that the topic name is linked to the strings area.

In some cases we may want to set attribute definitions that are not included in the initial theme (i.e. set a context for this action that can readily be modified for different themes). As with the interfacing template, we create these user-defined properties and have them implemented by each design. This way we can change the topics slightly at run time.

There are two types of elements: an item has two names and formats of formatting elements. name allows you to name the item and so you are referring to each one in the source file, e.g. R.attr.my_attribute. You can later define these properties in any topic and then use them on page view by applying a styles characteristic that specifies the applicable properties.

"pagesBackground " "reference" "textSubheader" "reference" "textLarge" "reference" "textRegular" "reference" "whiteBackground" "reference" "button" "reference" "spinner" "reference" When you define a padding or text size, the correct way is to save the explicitly defined value in a dimension. nml and then only point to the corresponding dimension labeled. "Activity Horizontal Padding" "content_left_margin_wh" "text_large_margin_top" "text_large_text_size" "text_subheader_text_size" "text_regular_text_size" "view_margin" "white_background_padding" "edittext_margin_top" "spinner_margin_left" "card_margin_top" The application of attribute to view is much easier with style.

You can, for example, adjust the stores of all your TextViews so that they have the store type texTitle. You can have user-defined text colour, fonts and border settings for this one. As well as using your own fashions, you can also use drawing elements to customise your view. Let's specify the backgrounds for our first theme in res/drawable/white_gray_gray_gradient_background. Let's draw a form for xml:

"#FFFFFFFF " Defines the default status of the buttons in res/drawable/button_wh_normal. xml: "http://schemas.android. The state of the key res/drawable/button_wh_pressed is defined as follows: "com/apk/res/android" "rectangle" "270" "#FFCECFCE" "#FFBEBEBEBE" "#FFF7F7F7F7" "8dp" "16dp" "16dp" "16dp" "8dp" "48dp". nml: "http://schemas. android.com/apk/res/android" "rectangle" "270" "#FF207FB9" "#FF0060B8" "#FF66CFE6" "8dp" "8dp" "8dp" "8dp" "8dp" "8dp" "8dp" "48dp" Specify the status bar for the pushbutton in res/drawable/button_wh.

cml: xml: "http://schemas.android._wh_pressed " "true" "@drawable/button_wh_normal" For the nut, please load the nine-patch files for the square. All standard pullables can be found in the Android SDK on Github or on your system under /path/to/android/sdk/platforms//data/res/drawable/spinner_default_holo_light.9.png. Let's redefine the look of our nut. "http://schemas.android. com/apk/res/android" "transparent" "true" "rectangle" "#00000000000000" "true" "rectangle" "#000000000000" "@drawable/spinner_default_holo_light" Now we can open res/values/styles. nml fil.

Here all your viewing views are defined in res/values/styles. xml: xml: xf × xfx × xfx: xfx: xfx: xml format on newer instruments. "AppleBaseTheme." "Apple.AppCompat Theme. "AppTheme" "AppBaseTheme" "switch_text_appearance" "@android:style/TextAppearance.Holo. Small" "android:textColor" "page_background_wh" "android:background" "android:paddingLinks" "android:paddingRight" "text_subheader_wh" "android:textColor" "android:textSize" "android:shadowDy" "android: android : shadowRadius" "android:shadowColor" "text_large_wh" "android:textColor" "android:textSize" "android:shadowDy" "android:shadowRadius" "android:shadowColor" "android:textStyle" "android :

layout_marginTop" "text_regular_wh" "android:textColor" "android:textSize" "white_background_wh" "android:background" "android:layout_marginTop" "android:layout_marginBottom" "android: Upholstery" "button_wh" "text_large_wh" "android:background" "android:layout_marginTop" "spinner_wh" "android:background" "horizontal_line_wh" "android:background" "actionbar_bg_wh" "action_bar_wh" "@style/Widget. Invers " "android:background" "background" "Background" At the top of the page in the stores. yml is the place where we specify the "implementation" of the store attribute we have previously specified. Attribute views vary according to the theme you create, but attribute views have the same name across them.

In order to specify the theme properties, we use a themes.xml-files. Our design definitions include some customized stores with the item member. Notice that the standard operating system android:actionBarStyle attribute has been overwritten to design the actions toolbar along with the customized properties. Also, notice how we are implementing the customized properties in the theme specified intep 3, such as pagBackground, texSubheader, etc. in the theme.

Include the following in res/values/themes. xml: "http://schemas.android. com/apk/res/android" "Theme. Material_Light" "Theme.AppCompat. Light" "pageArrière-plan" "textSous-en-tête" "textLarge" "textLarge" "textRegular" "whiteBackground" "bouton" "spinner" "actionBarStyle" "Theme. Theme. AppCompat. Light " Notice that the design just defaults to the right stylistic reference for each of the attributes we previously used. This design functions as a "style controller" that specifies which stores should be applied to different aspect of the look.

In order to have more than one topic, you must define more than one topic definition in topics. As shown in above topic above, see how much topics are defined in topics. cml. Refresh your layouts files and customize your view formats. Modify res/layout/activity_theme. nml to append the theme attribute to each element to be applied according to the theme:

pagBackground" "match_parent" "match_parent" "match_parent" "@+id/tvSelectTheme" " ? textLarge" "wrap_content" "wrap_content" "wrap_content" "@string/settings_text_select_theme" "@+id/spThemes" " ? wrap_content" "wrap_content" "wrap_content" "wrap_content" "@+id/tvSelectTheme" "true" "@dimen/spinner_margin_left" "@+id/tvSelectTheme" "@array/theme_array" "dropdown" "@+id/rlCredentials " ? background" "wrap_content" "wrap_content" "@+id/tvSelectTheme" "@+id/tvCredentials" "? wrap_content" "wrap_content" "wrap_content" "@string/settings_text_credentials" "@+id/tvUsername" " ? textRegular" "match_parent" "wrap_content" "@+id/tvCredentials" "@string/settings_text_username_hint" "text" "1" "@+id/tvtpsword" " ? match_parent" "wrap_content" "@+id/tvUsername" "@dimen/edittext_margin_top" "@string/settings_text_password_hint" "textPassword" "1" "@+id/tvSync" " ?

wrap_content" "wrap_content" "wrap_content" "@+id/rlCredentials" "@string/settings_text_sync_automatically" "17sp" "@+id/checkbox_sync_automatically" "wrap_content" "wrap-content" "wrap_content" "wrap_content" "wrap_content" "@+id/tvSync" "true" "true" "@+id/tvLocation" " ? wrap_content" "wrap_content" "wrap_content" "@+id/tvSync" "@dimen/view_margin" "@string/settings_text_location" "17sp" "@+id/toggle_google" "wrap_content" "wrap_content" "wrap_content" "wrap-around_content". "</ i> ; "true" "@+id/tvLocation" "@+id/tvLocation" "@style/switch_text_appearance" "@string/settings_text_state_off" "@string/settings_text_state_on" "@+id/btnClearData" " ? wrap_content " "wrap_content" "wrap_content" "true" "true" "@dimen/view_margin" "@string/settings_text_clear_data" Please notice that the `style="? somethemeattr" is the language for a link to a value of a given topic.

You can specify the theme of your applications or single actions in the Manifest Files if you are not using more than one theme. However, for our ap, since we modify the topic out of the lunatic dynamic, we have to do this programmatically. In order to modify the topic, all you need to do is start your business again.

SubjectApplication. java: ; Utils. java: ; ; ; ; ; ;, ; . ); : : THEME_MATERIAL_LIGHT: ..... SUBJECTS: ); ; SUBJECT_OF_YOUR_CUSTOM_SPECIFIC_TOPIC: .... ThemeActivity. jump now in the ThemeActivity. to allow the application of user-defined themes: ; . ); . ); . . ); (); . . ); ();; . ); . . ); ..

If you are running your application at this point, you should have adopted the themes for the theme 'Material Light'. It' now up to the readers to decide the style and drawing elements for their own customized design.