Efficient Start Page (Splash)

Many applications need a page to display the company's brand or logo, or even if the page is not needed, if the layout is more complex, the launch of the application will have a short white screen (related to the system theme), often we will write a separate activity, and then display a picture or logo, Set a fixed time delay to start a real mainactivity, so it's a fuss, share a small skill:

• First use Layer-list to define a hierarchy of drawable:

<layer-list xmlns:android= "Http://schemas.android.com/apk/res/android" > <item> <color android:col Or= "@color/background_material_light"/> </item> <item> <bitmap android:src= "@dra Wable/launch_logo_image "android:tilemode=" Disabled "android:gravity=" center "/> </item>& Lt;/layer-list>

Define the background and a bitmap display Logo,logo center display, the area beyond the bitmap size is not tiled or other processing;

• It is then applied to the global background (when the app starts, the theme is rendered first, if the theme is not set by default using the system):

<style name= "Apptheme" parent= "Theme.AppCompat.Light.DarkActionBar"/> <style name= "Apptheme.brandedlaunch "Parent=" Apptheme "> <item name=" android:windowbackground "> @drawable/branded_logo</item></style >

• Entry Activity Settings topic:

<activity android:name= ". Mainactivity "android:label=" @string/app_name "android:theme=" @style/apptheme.brandedlaunch ">

As this will change the overall theme, want to go back to the original system default theme can be changed dynamically in OnCreate:

@Overrideprotected void OnCreate (Bundle savedinstancestate) {setTheme (r.style.apptheme);    Super.oncreate (savedinstancestate); Setcontentview (R.layout.activity_main);}

Before the app starts, a short white screen is displayed:

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/72/77/wKiom1XkFjjj3lcaAAXNDW0RgZc336.gif "title=" Branded_launch_no_brand.gif "alt=" Wkiom1xkfjjj3lcaaaxndw0rgzc336.gif "/>

After using this method:

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/72/77/wKiom1XkFoTwjtu_AAYYswADWMo994.gif "title=" Branded_launch_with_brand.gif "alt=" Wkiom1xkfotwjtu_aayyswadwmo994.gif "/>

is not much more comfortable.

Reference from Antonioleiva, source GitHub repository

This article is from the "Beyond the Dream" blog, please be sure to keep this source http://lbrant.blog.51cto.com/2400264/1690191

Efficient Start Page (Splash)