public class DataCleanManager{
/** *
获取缓存大小 *
@paramcontext *
@return*
@throwsException */
public static StringgetTotalCacheSize(Context context){
long cacheSize =0;
try{
cacheSize = getFolderSize(context.getCacheDir());
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
cacheSize += getFolderSize(context.getExternalCacheDir());
}
}catch(Exception e) {
e.printStackTrace();
}
return getFormatSize(cacheSize);
}
/** * 清除缓存 *
@paramcontext */
public static void clearAllCache(Context context){ deleteDir(context.getCacheDir());
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { deleteDir(context.getExternalCacheDir());
}
}
private static booleandeleteDir(File dir){
if(dir !=null && dir.isDirectory()) {
String[] children = dir.list();
for(inti =0; i < children.length; i++) {
booleansuccess = deleteDir(newFile(dir, children[i]));
if(!success) {
return false;
} } }
return
dir.delete();
}
// 获取文件大小//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) throwsException{
longsize =0;
try{ File[] fileList = file.listFiles();
for(inti =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 * @paramsize * @return*/
public static StringgetFormatSize(doublesize){
doublekiloByte = size /1024;
if(kiloByte <1) {
// return size + "Byte";return"0K"; }
doublemegaByte = kiloByte /1024;if(megaByte <1) {
BigDecimal result1 =newBigDecimal(Double.toString(kiloByte));
returnresult1.setScale(2, BigDecimal.ROUND_HALF_UP) .toPlainString() +"K"; }
doublegigaByte = megaByte /1024;if(gigaByte <1) {
BigDecimal result2 =newBigDecimal(Double.toString(megaByte));returnresult2.setScale(2, BigDecimal.ROUND_HALF_UP) .toPlainString() +"M"; }
doubleteraBytes = gigaByte /1024;if(teraBytes <1) {
BigDecimal result3 =newBigDecimal(Double.toString(gigaByte));
return result3.setScale(2, BigDecimal.ROUND_HALF_UP) .toPlainString() +"GB";
}
BigDecimal result4 =newBigDecimal(teraBytes);
return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() +"TB";
}
}
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