android - How to apply a Theme, which could be changed in runtime, to the UI? -

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users of app have possibility change theme of application. can check in play store: https://play.google.com/store/apps/details?id=at.guger.musixs

until now, every activities onapplythemeresource-method overridden.

this costly, cannot done in 1 way, because every activity has own peculiarities, e.g. 1 has no actionbar.

there 1 other problem. these styles not applied alertdialogs, can see if check app!

so there better way apply styles? saw module called appthemeengine, able around themes, 1 requires superuser-permissions, it's useless normal costumers.

@override protected void onapplythemeresource(resources.theme theme, int resid, boolean first) {     super.onapplythemeresource(theme, resid, first);      mpreferences = preferencemanager.getdefaultsharedpreferences(getapplicationcontext());      int ithemeid = r.style.noactionbarthemeblue;      string sprefblue = getresources().getstring(r.string.pref_color_blue);     string sprefgray = getresources().getstring(r.string.pref_color_gray);     string sprefgreen = getresources().getstring(r.string.pref_color_green);     string spreforange = getresources().getstring(r.string.pref_color_orange);     string sprefred = getresources().getstring(r.string.pref_color_red);      string sprefcolor = mpreferences.getstring(getresources().getstring(r.string.keythemecolor), sprefblue);      if (sprefcolor.equals(sprefblue)) {         ithemeid = r.style.noactionbarthemeblue;     }     else if (sprefcolor.equals(sprefgray)) {         ithemeid = r.style.noactionbarthemegray;     }     else if (sprefcolor.equals(sprefgreen)) {         ithemeid = r.style.noactionbarthemegreen;     }     else if (sprefcolor.equals(spreforange)) {         ithemeid = r.style.noactionbarthemeorange;     }     else if (sprefcolor.equals(sprefred)) {         ithemeid = r.style.noactionbarthemered;     }      runtimeinfo.setthemeid(ithemeid);      theme.applystyle(ithemeid, true); }

my styles.xml:

<resources>     <style name="actionbarthemeblue" parent="theme.appcompat.light.darkactionbar">         <item name="android:windowbackground">@android:color/white</item>         <item name="colorprimary">@color/blueprimary</item>         <item name="colorprimarydark">@color/blueprimarydark</item>         <item name="coloraccent">@color/blueaccent</item>     </style>      <style name="noactionbarthemeblue" parent="theme.appcompat.light.noactionbar">         <item name="android:windowbackground">@android:color/white</item>         <item name="colorprimary">@color/blueprimary</item>         <item name="colorprimarydark">@color/blueprimarydark</item>         <item name="coloraccent">@color/blueaccent</item>     </style>      <style name="actionbarthemegray" parent="theme.appcompat.light.darkactionbar">         <item name="android:windowbackground">@android:color/white</item>         <item name="colorprimary">@color/grayprimary</item>         <item name="colorprimarydark">@color/grayprimarydark</item>         <item name="coloraccent">@color/grayaccent</item>     </style>      <style name="noactionbarthemegray" parent="theme.appcompat.light.noactionbar">         <item name="android:windowbackground">@android:color/white</item>         <item name="colorprimary">@color/grayprimary</item>         <item name="colorprimarydark">@color/grayprimarydark</item>         <item name="coloraccent">@color/grayaccent</item>     </style>       <style name="actionbarthemegreen" parent="theme.appcompat.light.darkactionbar">         <item name="android:windowbackground">@android:color/white</item>         <item name="colorprimary">@color/greenprimary</item>         <item name="colorprimarydark">@color/greenprimarydark</item>         <item name="coloraccent">@color/greenaccent</item>     </style>      <style name="noactionbarthemegreen" parent="theme.appcompat.light.noactionbar">         <item name="android:windowbackground">@android:color/white</item>         <item name="colorprimary">@color/greenprimary</item>         <item name="colorprimarydark">@color/greenprimarydark</item>         <item name="coloraccent">@color/greenaccent</item>     </style>      ...  </resources>

i hope knows better way of changing themes! thanks!


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