Android Studio如何创建自己的library，供别人使用？

package com.example.baselayerlibrary.Utils; import android.app.ActivityManager; import android.content.Context; import android.content.pm.ApplicationInfo; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.text.TextUtils; import java.util.List; /** * Created by lvlufei on 2017/12/18. * <p> * APP辅助工具 */ public class AppUtils { private AppUtils() { } public static AppUtils getInstance() { return AppUtilsHelper.mAppUtils; } /** * 静态内部类实现单例 */ private static class AppUtilsHelper { private static AppUtils mAppUtils; static { mAppUtils = new AppUtils(); } } /** * 获取当前应用程序的包名 * * @param context * @return */ public String getAppProcessName(Context context) { //当前应用pid int pid = android.os.Process.myPid(); //任务管理类 ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); //遍历所有应用 List<ActivityManager.RunningAppProcessInfo> infos = manager.getRunningAppProcesses(); for (ActivityManager.RunningAppProcessInfo info : infos) { //得到当前应用 if (info.pid == pid) //返回包名 return info.processName; } return ""; } /** * 获取用程序名称 * * @param context * @return */ public String getAppName(Context context) { try { PackageManager packageManager = context.getPackageManager(); PackageInfo packageInfo = packageManager.getPackageInfo(context.getPackageName(), 0); int labelRes = packageInfo.applicationInfo.labelRes; return context.getResources().getString(labelRes); } catch (Exception e) { e.printStackTrace(); } return null; } /** * 获取应用版本名称 * * @param context * @return */ public String getVersionName(Context context) { try { PackageManager packageManager = context.getPackageManager(); PackageInfo packageInfo = packageManager.getPackageInfo(context.getPackageName(), 0); return packageInfo.versionName; } catch (Exception e) { e.printStackTrace(); } return null; } /** * 获取应用版本号 * * @param context * @return */ public int getVersionCode(Context context) { try { PackageManager packageManager = context.getPackageManager(); PackageInfo packageInfo = packageManager.getPackageInfo(context.getPackageName(), 0); return packageInfo.versionCode; } catch (Exception e) { e.printStackTrace(); } return 0; } /** * 获取application中指定的meta-data * * @param ctx * @param key * @return 如果没有获取成功(没有对应值，或者异常)，则返回值为空 */ public int getAppMetaDataInt(Context ctx, String key) { if (ctx == null || TextUtils.isEmpty(key)) { return 0; } int resultData = 0; try { PackageManager packageManager = ctx.getPackageManager(); if (packageManager != null) { ApplicationInfo applicationInfo = packageManager.getApplicationInfo(ctx.getPackageName(), PackageManager.GET_META_DATA); if (applicationInfo != null) { if (applicationInfo.metaData != null) { resultData = applicationInfo.metaData.getInt(key); } } } } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return resultData; } /** * 获取application中指定的meta-data * * @param ctx * @param key * @return 如果没有获取成功(没有对应值，或者异常)，则返回值为空 */ public String getAppMetaDataStr(Context ctx, String key) { if (ctx == null || TextUtils.isEmpty(key)) { return null; } String resultData = null; try { PackageManager packageManager = ctx.getPackageManager(); if (packageManager != null) { ApplicationInfo applicationInfo = packageManager.getApplicationInfo(ctx.getPackageName(), PackageManager.GET_META_DATA); if (applicationInfo != null) { if (applicationInfo.metaData != null) { resultData = applicationInfo.metaData.getString(key); } } } } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return resultData; } }