获取缓存

val cacheSize: String = DataCleanManager.getTotalCacheSize(CommonLib.mContext)

删除缓存

DataCleanManager.clearAllCache(CommonLib.mContext)

DataCleanManager

mport android.content.Context;import android.os.Environment;import java.io.File;import java.math.BigDecimal;public class DataCleanManager {public static String getTotalCacheSize (Context context) throws Exception {return getFormatSize (getTotalCacheSizeInNum (context));}public static long getTotalCacheSizeInNum (Context context) throws Exception {long cacheSize = getFolderSize (context.getCacheDir ());if (Environment.getExternalStorageState ().equals (Environment.MEDIA_MOUNTED)) {cacheSize += getFolderSize (context.getExternalCacheDir ());}return cacheSize;}public static void clearAllCache (Context context) {try {deleteDir (context.getCacheDir ());if (Environment.getExternalStorageState ().equals (Environment.MEDIA_MOUNTED)) {deleteDir (context.getExternalCacheDir ());if (context.getExternalCacheDir () == null || !context.getExternalCacheDir().exists ()) {context.getExternalCacheDir().mkdirs ();}}final File cacheDir = context.getApplicationContext ().getCacheDir ();deleteDir (cacheDir);} catch (Exception e) {e.printStackTrace();}}private static boolean deleteDir (File dir) {if (!dir.isDirectory ()) {return dir.delete ();}if (dir != null && dir.isDirectory ()) {String[] children = dir.list ();for (int i = 0; i  SDCard/Android/data/你的应用的包名/files/ 目录，一般放一些长时间保存的数据//Context.getExternalCacheDir() --> SDCard/Android/data/你的应用包名/cache/目录，一般存放临时缓存数据public static long getFolderSize (File file) throws Exception {long size = 0;if (file == null || !file.exists () || !file.isDirectory ()) {return size;}try {File[] fileList = file.listFiles ();for (int i = 0; i < fileList.length; i++) {// 如果下面还有文件if (fileList[i].isDirectory ()) {size = size + getFolderSize (fileList[i]);} else {size = size + fileList[i].length ();}}} catch (Exception e) {e.printStackTrace ();}return size;}/** * 格式化单位 * * @param size * @return */public static String getFormatSize (double size) {double kiloByte = size / 1024;if (kiloByte < 1) {//return size + "Byte";return "0K";}double megaByte = kiloByte / 1024;if (megaByte < 1) {BigDecimal result1 = new BigDecimal (Double.toString (kiloByte));return result1.setScale (2, BigDecimal.ROUND_HALF_UP).toPlainString () + "K";}double gigaByte = megaByte / 1024;if (gigaByte < 1) {BigDecimal result2 = new BigDecimal (Double.toString (megaByte));return result2.setScale (2, BigDecimal.ROUND_HALF_UP) .toPlainString () + "M";}double teraBytes = gigaByte / 1024;if (teraBytes < 1) {BigDecimal result3 = new BigDecimal (Double.toString (gigaByte));return result3.setScale (2, BigDecimal.ROUND_HALF_UP) .toPlainString () + "G";}BigDecimal result4 = new BigDecimal (teraBytes);return result4.setScale (2, BigDecimal.ROUND_HALF_UP).toPlainString () + "T";}}