Java tutorial
//package com.java2s; import android.annotation.SuppressLint; import android.content.Context; import android.text.TextUtils; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.Reader; import java.io.StringWriter; import java.io.Writer; import java.text.SimpleDateFormat; import java.util.Date; public class Main { private static final String FILE = "channel_info"; private static final String SPLIT_REGULAR = "-"; private static final String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss"; public static String getPackageTime(Context context) { String channelInfo = getChannelInfo(context); if (TextUtils.isEmpty(channelInfo)) { return ""; } String[] infos = channelInfo.split(SPLIT_REGULAR); if (infos.length > 1) { return formatDate(Long.parseLong(channelInfo.split(SPLIT_REGULAR)[1])); } else { return ""; } } private static String getChannelInfo(Context context) { String channelInfo = ""; try { InputStream is = context.getResources().getAssets().open(FILE); channelInfo = convertStreamToString(is); } catch (IOException e) { e.printStackTrace(); } return channelInfo; } @SuppressLint("SimpleDateFormat") private static String formatDate(long time) { Date nowTime = new Date(time); SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT); return sdf.format(nowTime); } private static String convertStreamToString(InputStream is) { Writer writer = new StringWriter(); char[] buffer = new char[2048]; try { Reader reader = new BufferedReader(new InputStreamReader(is, "UTF-8")); int len; while ((len = reader.read(buffer)) != -1) { writer.write(buffer, 0, len); } } catch (IOException e) { e.printStackTrace(); } finally { try { is.close(); } catch (IOException e) { e.printStackTrace(); } } return writer.toString(); } }