锐客网

  1. 首页 > 睿知 > it技术 > >

android 怎样将主菜单图标改成按安装时间排序

IT知识android

【android 怎样将主菜单图标改成按安装时间排序】少年辛苦终身事，莫向光阴惰寸功。这篇文章主要讲述android 怎样将主菜单图标改成按安装时间排序相关的知识，希望能为你提供帮助。
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
 



















































    推荐阅读


    上一篇：Android执行时ART载入类和方法的过程分析

    下一篇：手机APP开发自己做，还是找专业的团队