/**

  * Created by uilubo on 2015/9/30.

  * 工具类

  */

 public class Utils {

     public static List<AppInfo> getAppList(Context context){

         // 返回值集合

         List<AppInfo> list = new ArrayList<AppInfo>();

         // 实例化包管理器

         PackageManager pm = context.getPackageManager();

         // 获取所有已经安装的应用信息

         List<PackageInfo> pList = pm.getInstalledPackages();

         // 遍历集合

         for(int i = ; i<pList.size(); i++){

             // 拿到元素

             PackageInfo packageInfo = pList.get(i);

             //判断是否是第三方应用 同时 不包含当前的应用的包名

             if(isThirdPartyApp(packageInfo.applicationInfo) &&

                     !packageInfo.packageName.equals(context.getPackageName())) {

                 // 填充实体类

                 AppInfo app = new AppInfo();

                 // 获取应用名

                 app.packageName = packageInfo.packageName;

                 app.versionName = packageInfo.versionName;

                 app.versionCode = packageInfo.versionCode;

                 app.insTime = packageInfo.firstInstallTime;

                 app.updTime = packageInfo.lastUpdateTime;

                 app.appName = (String) packageInfo.applicationInfo.loadLabel(pm);

                 // 获取图标

                 app.icon = packageInfo.applicationInfo.loadIcon(pm);

                 // 计算程序的大小

                 String dir = packageInfo.applicationInfo.publicSourceDir;

                 long byteSize = new File(dir).length();

                 // 实际大小

                 app.byteSize = byteSize;

                 // 格式化好的大小

                 app.size = getSize(byteSize);

                 list.add(app);

             }

         }

         return list;

     }

     /**

      * 判断应用是否是第三方应用

      * @param appInfo

      * @return

      */

     public static boolean isThirdPartyApp(ApplicationInfo appInfo) {

         boolean flag = false;

         if ((appInfo.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != ) {

             // 可更新的系统应用

             flag = true;

         }

         else if ((appInfo.flags & ApplicationInfo.FLAG_SYSTEM) == ) {

             // 非系统应用

             flag = true;

         }

         return flag;

     }

     /*获取文件大小*/

     public static String getSize(long size){

         return new DecimalFormat("0.##").format(size * 1.0/(*));

     }

     /*获取时间*/

     public static String getTime(long millis){

         Date date = new Date(millis);

         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

         return sdf.format(date);

     }

     /*

     *打开包文件

     */

     public static void openPackage(Context context, String packageName){

         Intent intent = context.getPackageManager().getLaunchIntentForPackage(packageName);

         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

         context.startActivity(intent);

     }

     /*卸载APK安装包*/

     public static void uninstallApk(Activity context, String packageName, int requestCode){

         Uri uri= Uri.parse("package:"+packageName);

         Intent intent = new Intent(Intent.ACTION_DELETE,uri);

         context.startActivityForResult(intent,requestCode);

     }

     public static List<AppInfo> getSearchResult(List<AppInfo> list,String key){

         List<AppInfo> result = new ArrayList<AppInfo>();

         for (int i= ; i < list.size(); i++){

             AppInfo app = list.get(i);

             if (app.appName.toLowerCase().contains(key.toLowerCase())){

                 result.add(app);

             }

         }

         return result;

     }

     public static SpannableStringBuilder highLightText(String str, String key){

         int start = str.toLowerCase().indexOf(key.toLowerCase());// 不区分大小写

         int end = start + key.length();

         SpannableStringBuilder sb = new SpannableStringBuilder(str);

         sb.setSpan(

                 new ForegroundColorSpan(Color.RED), // 前景颜色

                 start,                              // 起始坐标

                 end,                                // 终止坐标

                 Spannable.SPAN_EXCLUSIVE_INCLUSIVE

         );

         return sb;

     }

 }