千金一刻莫空度，老大无成空自伤。这篇文章主要讲述获取App应用信息相关的知识，希望能为你提供帮助。
【获取App应用信息】??安卓开发一般都需要进行apk的更新管理，常用操作老司机已为你封装完毕，经常有小伙伴问怎么进行管理，那我告诉你，你可以用这份工具进行管理，具体可以查看源码，现在为你开车，Demo传送门。
站点 获取App应用版本信息 →  AppApplicationMgr

getAppName: 获取本地apk的名称 getVersionName: 获取本地Apk版本名称 getVersionCode: 获取本地Apk版本号 getMetaData: 根据key获取xml中Meta的值 getAppIcon: 获取应用图标 getAppFirstInstallTime : 获取应用第一次安装日期 getAppLastUpdateTime: 获取应用更新日期 getAppSize: 获取应用大小 getAppApk: 获取应用apk文件 getAppInstaller: 获取应用的安装市场 getAppSign: 获取应用签名 getAppTargetSdkVersion : 获取应用兼容sdk getAppUid: 获取应用uid getNumCores: 获取Cpu内核数 getRootPermission: 获得root权限 getAppPermissions: 获取应用的所有权限 hasPermission: 是否有权限 isInstalled: 应用是否安装 installApk: 安装应用 uninstallApk: 卸载应用 isSystemApp: 是否是系统应用 isServiceRunning: 服务是否在运行 stopRunningService: 停止服务 killProcesses: 结束进程 runScript: 运行脚本 runApp: 启动应用 getPackageName: 获得包名 getApplicationMetaData : 获取application层级的metadata

具体路线@SuppressWarnings("rawtypes")
public class AppApplicationMgr {

/** * 获取本地apk的名称 * @param context 上下文 * @return String */ public static String getAppName(Context context) { try { PackageManager e = context.getPackageManager(); PackageInfo packageInfo = e.getPackageInfo(context.getPackageName(), 0); int labelRes = packageInfo.applicationInfo.labelRes; return context.getResources().getString(labelRes); } catch (NameNotFoundException var4) { var4.printStackTrace(); return "unKnown"; } }/** * 获取本地Apk版本名称 * @param context 上下文 * @return String */ public static String getVersionName(Context context) { String verName = ""; try { verName = context.getPackageManager().getPackageInfo(context.getPackageName(), 0).versionName; } catch (NameNotFoundException e) { AppLogMessageMgr.e("AppApplicationMgr--> > getVerName()", e.getMessage() + "获取本地Apk版本名称失败！"); e.printStackTrace(); } return verName; }/** * 获取本地Apk版本号 * @param context 上下文 * @return int */ public static int getVersionCode(Context context) { int verCode = -1; try { verCode = context.getPackageManager().getPackageInfo(context.getPackageName(), 0).versionCode; } catch (NameNotFoundException e) { AppLogMessageMgr.e("AppApplicationMgr--> > getVerCode()", e.getMessage() + "获取本地Apk版本号失败！"); e.printStackTrace(); } return verCode; }/** * 根据key获取xml中Meta的值 * @param context 上下文 * @param key * @return */ public static String getMetaData(Context context, String key) { String valuehttps://www.songbingjia.com/android/= ""; try { ApplicationInfo e = context.getPackageManager().getApplicationInfo(context.getPackageName(), 128); if(null != e) { Bundle metaData = e.metaData; if(null != metaData) { value = metaData.getString(key); if(null == value || value.length() == 0) { valuehttps://www.songbingjia.com/android/= ""; } } } } catch (NameNotFoundException var5) { var5.printStackTrace(); }return value; }/** * 获取应用图标 * @param context * @param packageName * @return */ public static Drawable getAppIcon(Context context, String packageName) { PackageManager pm = context.getPackageManager(); Drawable appIcon = null; try { ApplicationInfo applicationInfo = pm.getApplicationInfo(packageName, 0); appIcon = applicationInfo.loadIcon(pm); } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return appIcon; }/** * 获取应用第一次安装日期 * @param context * @param packageName * @return */ public static long getAppFirstInstallTime(Context context, String packageName) { long lastUpdateTime = 0; try { PackageInfo packageInfo = context.getPackageManager().getPackageInfo(packageName, 0); lastUpdateTime = packageInfo.firstInstallTime; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return lastUpdateTime; }/** * 获取应用更新日期 * @param context * @param packageName * @return */ public static long getAppLastUpdateTime(Context context, String packageName) { long lastUpdateTime = 0; try { PackageInfo packageInfo = context.getPackageManager().getPackageInfo(packageName, 0); lastUpdateTime = packageInfo.lastUpdateTime; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return lastUpdateTime; }/** * 获取应用大小 * @param context * @param packageName * @return */ public static long getAppSize(Context context, String packageName) { long appSize = 0; try { ApplicationInfo applicationInfo = context.getPackageManager().getApplicationInfo(packageName, 0); appSize = new File(applicationInfo.sourceDir).length(); } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return appSize; }/** * 获取应用apk文件 * @param context * @param packageName * @return */ public static String getAppApk(Context context, String packageName) { String sourceDir = null; try { ApplicationInfo applicationInfo = context.getPackageManager().getApplicationInfo(packageName, 0); sourceDir = applicationInfo.sourceDir; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return sourceDir; }/** * 获取应用的安装市场 * @param context * @param packageName * @return */ public static String getAppInstaller(Context context, String packageName) { return context.getPackageManager().getInstallerPackageName(packageName); }/** * 获取应用签名 * @param context * @param packageName * @return */ public static String getAppSign(Context context, String packageName) { try { PackageInfo pis = context.getPackageManager().getPackageInfo(packageName, PackageManager.GET_SIGNATURES); return hexdigest(pis.signatures[0].toByteArray()); } catch (PackageManager.NameNotFoundException e) { throw new RuntimeException(AppApplicationMgr.class.getName() + "the " + packageName + "‘s application not found"); } }public static String hexdigest(byte[] paramArrayOfByte) { final char[] hexDigits = {48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102}; try { MessageDigest localMessageDigest = MessageDigest.getInstance("MD5"); localMessageDigest.update(paramArrayOfByte); byte[] arrayOfByte = localMessageDigest.digest(); char[] arrayOfChar = new char[32]; for (int i = 0, j = 0; ; i++, j++) { if (i > = 16) { return new String(arrayOfChar); } int k = arrayOfByte[i]; arrayOfChar[j] = hexDigits[(0xF & k > > > 4)]; arrayOfChar[++j] = hexDigits[(k & 0xF)]; } } catch (Exception e) { e.printStackTrace(); } return ""; }/** * 获取应用兼容sdk * @param context * @param packageName * @return */ public static int getAppTargetSdkVersion(Context context, String packageName) { try { PackageInfo packageInfo = context.getPackageManager().getPackageInfo(packageName, 0); ApplicationInfo applicationInfo = packageInfo.applicationInfo; return applicationInfo.targetSdkVersion; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); return 0; } }/** * 获取应用uid * @param context * @param packageName * @return */ public static int getAppUid(Context context, String packageName) { try { PackageInfo packageInfo = context.getPackageManager().getPackageInfo(packageName, 0); ApplicationInfo applicationInfo = packageInfo.applicationInfo; return applicationInfo.uid; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); return 0; } }/** * 获取Cpu内核数 * @return */ public static int getNumCores() { try { File dir = new File("/sys/devices/system/cpu/"); File[] files = dir.listFiles(new FileFilter() {@Override public boolean accept(File pathname) { return Pattern.matches("cpu[0-9]", pathname.getName()); }}); return files.length; } catch (Exception e) { e.printStackTrace(); return 1; } }/** * 获得root权限 * @param context * @return */ public static boolean getRootPermission(Context context) { String packageCodePath = context.getPackageCodePath(); Process process = null; DataOutputStream os = null; try { String cmd = "chmod 777 " + packageCodePath; process = Runtime.getRuntime().exec("su"); os = new DataOutputStream(process.getOutputStream()); os.writeBytes(cmd + "\n"); os.writeBytes("exit\n"); os.flush(); process.waitFor(); } catch (Exception e) { return false; } finally { try { if (os != null) { os.close(); } process.destroy(); } catch (Exception e) { e.printStackTrace(); } } return true; }/** * 获取应用的所有权限 * @param context * @param packname * @return */ public static String[] getAppPermissions(Context context, String packname) { String[] requestedPermissions = null; try { PackageInfo info = context.getPackageManager().getPackageInfo(packname, PackageManager.GET_PERMISSIONS); requestedPermissions = info.requestedPermissions; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return requestedPermissions; }/** * 是否有权限 * @param context * @param permission * @return */ public static boolean hasPermission(Context context, String permission) { if (context != null & & !TextUtils.isEmpty(permission)) { try { PackageManager packageManager = context.getPackageManager(); if (packageManager != null) { if (PackageManager.PERMISSION_GRANTED == packageManager.checkPermission(permission, context .getPackageName())) { return true; } Log.d("AppUtils", "Have youdeclared permission " + permission + " in androidManifest.xml ?"); } } catch (Exception e) { e.printStackTrace(); return false; } } return false; }/** * 应用是否安装 * @param context * @param packageName * @return */ public static boolean isInstalled(Context context, String packageName) { boolean installed = false; if (TextUtils.isEmpty(packageName)) { return false; } List< ApplicationInfo> installedApplications = context.getPackageManager().getInstalledApplications(0); for (ApplicationInfo in : installedApplications) { if (packageName.equals(in.packageName)) { installed = true; break; } else { installed = false; } } return installed; }/** * 安装应用 * @param context * @param filePath * @return */ public static boolean installApk(Context context, String filePath) { File file = new File(filePath); if (!file.exists() || !file.isFile() || file.length() < = 0) { return false; } Intent i = new Intent(Intent.ACTION_VIEW); i.setDataAndType(Uri.parse("file://" + filePath), "application/vnd.android.package-archive"); i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(i); return true; }/** * 卸载应用 * @param context * @param packageName * @return */ public static boolean uninstallApk(Context context, String packageName) { if (TextUtils.isEmpty(packageName)) { return false; } Intent i = new Intent(Intent.ACTION_DELETE, Uri.parse("package:" + packageName)); i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(i); return true; }/** * 是否是系统应用 * @param context * @param packageName * @return */ public static boolean isSystemApp(Context context, String packageName) { boolean isSys = false; PackageManager pm = context.getPackageManager(); try { ApplicationInfo applicationInfo = pm.getApplicationInfo(packageName, 0); if (applicationInfo != null & & (applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) > 0) { isSys = true; } } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); isSys = false; } return isSys; }/** * 服务是否在运行 * @param context * @param className * @return */ public static boolean isServiceRunning(Context context, String className) { boolean isRunning = false; ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); List< RunningServiceInfo> servicesList = activityManager.getRunningServices(Integer.MAX_VALUE); for (RunningServiceInfo si : servicesList) { if (className.equals(si.service.getClassName())) { isRunning = true; } } return isRunning; }/** * 停止服务 * @param context * @param className * @return */ public static boolean stopRunningService(Context context, String className) { Intent intent_service = null; boolean ret = false; try { intent_service = new Intent(context, Class.forName(className)); } catch (Exception e) { e.printStackTrace(); } if (intent_service != null) { ret = context.stopService(intent_service); } return ret; }/** * 结束进程 * @param context * @param pid * @param processName */ public static void killProcesses(Context context, int pid, String processName) { ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); String packageName; try { if (!processName.contains(":")) { packageName = processName; } else { packageName = processName.split(":")[0]; } activityManager.killBackgroundProcesses(packageName); Method forceStopPackage = activityManager.getClass().getDeclaredMethod("forceStopPackage", String.class); forceStopPackage.setAccessible(true); forceStopPackage.invoke(activityManager, packageName); } catch (Exception e) { e.printStackTrace(); } }/** * 运行脚本 * @param script * @return */ public static String runScript(String script) { String sRet; try { final Process m_process = Runtime.getRuntime().exec(script); final StringBuilder sbread = new StringBuilder(); Thread tout = new Thread(new Runnable() { public void run() { BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(m_process.getInputStream()), 8192); String ls_1; try { while ((ls_1 = bufferedReader.readLine()) != null) { sbread.append(ls_1).append("\n"); } } catch (IOException e) { e.printStackTrace(); } finally { try { bufferedReader.close(); } catch (IOException e) { e.printStackTrace(); } } } }); tout.start(); final StringBuilder sberr = new StringBuilder(); Thread terr = new Thread(new Runnable() { public void run() { BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(m_process.getErrorStream()), 8192); String ls_1; try { while ((ls_1 = bufferedReader.readLine()) != null) { sberr.append(ls_1).append("\n"); } } catch (IOException e) { e.printStackTrace(); } finally { try { bufferedReader.close(); } catch (IOException e) { e.printStackTrace(); } } } }); terr.start(); m_process.waitFor(); while (tout.isAlive()) { Thread.sleep(50); } if (terr.isAlive()) terr.interrupt(); String stdout = sbread.toString(); String stderr = sberr.toString(); sRet = stdout + stderr; } catch (Exception e) { e.printStackTrace(); return null; } return sRet; }/** * 启动应用 * @param context * @param packagename */ public static void runApp(Context context, String packagename) { context.startActivity(new Intent(context.getPackageManager().getLaunchIntentForPackage(packagename))); }

// /**
// * 获得当前版本信息
// * @param keyValues key信息
// * @return RequestParams
// */
// public static RequestParams getRequestParams(HashMap< String,String> keyValues){
// RequestParams params = new RequestParams();
// Iterator iterator = keyValues.entrySet().iterator();
// while(iterator.hasNext()){
// Map.Entry entry = (Map.Entry) iterator.next();
// Object key = entry.getKey();
// params.put((String) key, entry.getValue().toString());
// }
// return params;
// }

/** * 获得包名 * * @param context 上下文 * @return 包名 */ public static String getPackageName(Context context) { try { return context.getPackageManager().getPackageInfo(context.getPackageName(), 0).packageName; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return null; }/** * 获取application层级的metadata * * @param context 上下文 * @param keykey * @return value */ public static String getApplicationMetaData(Context context, String key) { try { Bundle metaData = https://www.songbingjia.com/android/context.getPackageManager().getApplicationInfo(context.getPackageName(), PackageManager.GET_META_DATA).metaData; return metaData.get(key).toString(); } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return null; }/** * 获得应用申明的所有权限列表 * @param context 上下文 * @return 获得应用申明的所有权限列表 */ public static List< String> getPermissions(Context context){ List< String> permissions=new ArrayList< String> (); try { PackageInfo packageInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), PackageManager.GET_PERMISSIONS); permissions.addAll(Arrays.asList(packageInfo.requestedPermissions)); } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return permissions; }

}
终点站??好了，终点站到了，如果对本次旅途满意的话，请给五星好评哦，没关注的小伙伴轻轻点个上方的关注，毕竟老司机牺牲了很多时间才换来这么一份工具类，如果该工具类依赖其他工具类，都可以在我的史上最全的常用开发工具类收集(持续更新中)中找到。

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