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:

将

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

将

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