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  • android 怎样将主菜单图标改成按安装时间排序

    1. 在 LauncherModel.java 中增加例如以下代码, 假设是KK Launcher3 ApplicationInfo要替换为AppInfo
    public static final Comparator<ApplicationInfo> getInstallTimeComparator() {
      return new Comparator<ApplicationInfo>() {
                public final int compare(ApplicationInfo a, ApplicationInfo b) {
                    return a.firstInstallTime == b.firstInstallTime ?

    0 : a.firstInstallTime > b.firstInstallTime ? 1:-1;
                }
            };
     }


     public static class InstallTimeComparator implements Comparator<ResolveInfo> {
      private PackageManager mPackageManager;
      List<ResolveInfo> mapps;
      InstallTimeComparator(PackageManager pm, List<ResolveInfo> apps)
      {
       mPackageManager = pm;
       mapps = apps;
       
      }
     
      public final int compare(ResolveInfo a, ResolveInfo b) {
       String packageNameA = a.activityInfo.applicationInfo.packageName;
       String packageNameB = b.activityInfo.applicationInfo.packageName;
       long firstInstallTimeA = 0, firstInstallTimeB = 0;
       try{
       firstInstallTimeA = mPackageManager.getPackageInfo(packageNameA, 0).firstInstallTime;
       firstInstallTimeB = mPackageManager.getPackageInfo(packageNameB, 0).firstInstallTime;
       }catch(Exception e){
        e.printStackTrace(); 
        return 0;
       }
      return firstInstallTimeA == firstInstallTimeB ?

    0 : firstInstallTimeA > firstInstallTimeB ?

    1:-1;
      }
     };
     
    2. 改动 LauncherModel.java 的 loadAllAppsByBatch() 方法:

    Collections.sort(apps,new LauncherModel.ShortcutNameComparator(packageManager, mLabelCache));
    替换成:
    Collections.sort(apps,new InstallTimeComparator(packageManager, apps));
     
    3. 改动 AppsCustomizePagedview.java 的 setApps 方法

    Collections.sort(mApps, LauncherModel.getAppNameComparator());
    替换成:
    Collections.sort(mApps, LauncherModel.getInstallTimeComparator());
     
    4. 系统排序会调用reorderApps方法,因此您在其它条件下也要达到安装时间排序,请在相应的reorderApps方法调用前添加
    Collections.sort(mApps, LauncherModel.getInstallTimeComparator());
    比如:安装的应用后也想安装新的排序方式排列,须要在AppsCustomizePagedview.java 的 addApps 方法前添加sort的调用
     

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  • 原文地址:https://www.cnblogs.com/tlnshuju/p/6963724.html
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