Android应用动态修改主题的方法示例

1.使用api设置主题

如下所示，在activity中使用settheme

settheme(r.style.mytheme1);

2.调用api的时机

需要在super.oncreate(savedinstancestate)之前调用settheme

3.重新设置主题

要重新设置主题，则需要结束activity，重新启动才可以

public class mainactivity extends activity {
  private textview tv;
  @override
  protected void oncreate(bundle savedinstancestate) {
    if(myapplication.show_theme_flag == myapplication.show_1_theme_flag){
      settheme(r.style.mytheme2);
    }else if(myapplication.show_theme_flag == myapplication.show_2_theme_flag){
      settheme(r.style.mytheme1);
    }
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
    tv = findviewbyid(r.id.tv);
    getactionbar().show();
    getactionbar().settitle("actionbar title");
    tv.setonclicklistener(new view.onclicklistener() {
      @override
      public void onclick(view view) {
        if(myapplication.show_theme_flag == myapplication.show_1_theme_flag){
          myapplication.show_theme_flag = myapplication.show_2_theme_flag;
        }else if(myapplication.show_theme_flag == myapplication.show_2_theme_flag){
          myapplication.show_theme_flag = myapplication.show_1_theme_flag;
        }
        intent mintent = getintent();
        finish();
        overridependingtransition(0,0);
        startactivity(mintent);
      }
    });
  }
}

4.常用主题style设置

  <style name="mytheme1" parent="@android:style/theme.material">
    <!-- 状态栏 -->
    <item name="android:colorprimarydark">#f00</item>
    <!-- actionbar颜色 -->
    <item name="android:colorprimary">#ff0</item>
    <!-- 界面背景色 -->
    <item name="android:windowbackground">@color/windowbackgroundcolor1</item>
    <!-- 导航栏颜色 -->
    <item name="android:navigationbarcolor">#0000ff</item>
  </style>
  <style name="mytheme2" parent="@android:style/theme.material">
    <!-- 状态栏 -->
    <item name="android:colorprimarydark">#757575</item>
    <!-- actionbar颜色 -->
    <item name="android:colorprimary">#03a9f4</item>
    <!-- 界面背景色 -->
    <item name="android:windowbackground">@color/windowbackgroundcolor2</item>
    <!-- 导航栏颜色 -->
    <item name="android:navigationbarcolor">#1976d2</item>
  </style>

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