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package com.richerpay.ryshop.util;
import java.io.File;
import java.math.BigDecimal;
import com.nostra13.universalimageloader.core.ImageLoader;
import android.content.Context;
import android.os.Environment;
/**
* app缓存清理文件清理管理器
*
*/
public class DataCleanManager {
/**
* 清除本应用内部缓存(/data/data/com.xxx.xxx/cache)
*
* @param context
* */
public static void cleanInternalCache(Context context) {
deleteFilesByDirectory(context.getCacheDir());
ImageLoader.getInstance().clearMemoryCache(); // 清除内存缓存
}
/**
* 清除本应用所有数据库(/data/data/com.xxx.xxx/databases)
*
* @param context
* */
public static void cleanDatabases(Context context) {
deleteFilesByDirectory(new File("/data/data/"
+ context.getPackageName() + "/databases"));
}
/**
* * 清除本应用SharedPreference(/data/data/com.xxx.xxx/shared_prefs)
*
* @param context
*/
public static void cleanSharedPreference(Context context) {
deleteFilesByDirectory(new File("/data/data/"
+ context.getPackageName() + "/shared_prefs"));
}
/**
* * 按名字清除本应用数据库 *
* * @param context *
*
* @param dbName
* */
public static void cleanDatabaseByName(Context context, String dbName) {
context.deleteDatabase(dbName);
}
/**
* * 清除/data/data/com.xxx.xxx/files下的内容 *
*
* @param context
*
**/
public static void cleanFiles(Context context) {
deleteFilesByDirectory(context.getFilesDir());
}
/**
* * 清除外部cache下的内容(/mnt/sdcard/android/data/com.xxx.xxx/cache)
* * @param
* context
*/
public static void cleanExternalCache(Context context) {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
deleteFilesByDirectory(context.getExternalCacheDir());
}
}
/**
* * 清除自定义路径下的文件，使用需小心，请不要误删。而且只支持目录下的文件删除
* * @param filePath
* */
public static void cleanCustomCache(String filePath) {
deleteFilesByDirectory(new File(filePath));
}
/**
* * 清除本应用所有的数据 *
* * @param context *
* *@param filepath
* */
public static void cleanApplicationData(Context context, String... filepath) {
cleanInternalCache(context);
cleanExternalCache(context);
cleanDatabases(context);
cleanSharedPreference(context);
cleanFiles(context);
for (String filePath : filepath) {
cleanCustomCache(filePath);
}
}
/**
* * 清除本应用数据 *
* * @param context *
* *@param filepath
* */
public static void cleanApplicationData(Context context) {
cleanInternalCache(context);
cleanExternalCache(context);
cleanDatabases(context);
cleanSharedPreference(context);
cleanFiles(context);
ImageLoader.getInstance().clearDiskCache(); // 清除本地缓存
}
/**
* * 删除方法 这里只会删除某个文件夹下的文件，如果传入的directory是个文件，将不做处理 *
* * @param directory
* */
private static void deleteFilesByDirectory(File directory) {
if (directory != null && directory.exists() && directory.isDirectory()) {
File files[]=directory.listFiles();
if(files!=null){
int length=files.length;
if(length>0){
for (File item : files) {
item.delete();
}
}
}
}
}
/**
* 获取总缓存大小
* @param context
* @return
* @throws Exception
*/
public static String getTotalCacheSize(Context context) throws Exception {
long cacheSize = getFolderSize(context.getCacheDir());
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
cacheSize += getFolderSize(context.getExternalCacheDir());
}
return getFormatSize(cacheSize);
}
// 获取文件
//Context.getExternalFilesDir() --> 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){
try {
File[] fileList = file.listFiles();
if(fileList!=null){
int length=fileList.length;
if(length>0){
for (int i = 0; i < 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 "0K";
}
double megaByte = kiloByte / 1024;
if (megaByte < 1) {
BigDecimal result1 = new BigDecimal(Double.toString(kiloByte));
return result1.setScale(2, BigDecimal.ROUND_HALF_UP)
.toPlainString() + "KB";
}
double gigaByte = megaByte / 1024;
if (gigaByte < 1) {
BigDecimal result2 = new BigDecimal(Double.toString(megaByte));
return result2.setScale(2, BigDecimal.ROUND_HALF_UP)
.toPlainString() + "MB";
}
double teraBytes = gigaByte / 1024;
if (teraBytes < 1) {
BigDecimal result3 = new BigDecimal(Double.toString(gigaByte));
return result3.setScale(2, BigDecimal.ROUND_HALF_UP)
.toPlainString() + "GB";
}
BigDecimal result4 = new BigDecimal(teraBytes);
return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString()
+ "TB";
}
}