Mega Code Archive
Using Ini file to manage Preferences
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//package com.a4studio.android.newsreader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.Properties;
import android.content.Context;
import android.util.Log;
public class Preferences {
private final static String TAG=Preferences.class.getSimpleName();
private Context context;
public final static String PREF_FILE_NAME="prefs.ini";
public final static String TIME_KEY="time";
public final static String KEYWORD_KEY="keyword";
public final static String RESULT_NUM_KEY="result";
private Properties props;
public Preferences( Context context)
{
this.context = context;
boolean isExist =true;
try {
context.openFileInput(PREF_FILE_NAME);
} catch (FileNotFoundException e) {
Log.e(TAG, "can't read pref file", e);
isExist = false;
}
props = new Properties();
if(!isExist)
{
reconstruct();
}
props.clear();
FileInputStream fin;
try {
fin = context.openFileInput(PREF_FILE_NAME);
props.load(fin);
fin.close();
} catch (FileNotFoundException e) {
Log.e(TAG, "can't read pref file", e);
} catch (IOException e) {
Log.e(TAG, "can't read pref file", e);
}
}
public int getResultNumSetting()
{
String time = props.getProperty(RESULT_NUM_KEY, "1");
int timeValue;
try
{
timeValue = Integer.parseInt(time);
}
catch(Exception e)
{
//the file could be crashed, so reconstruct one more
reconstruct();
time = props.getProperty(RESULT_NUM_KEY, "1");
timeValue = Integer.parseInt(time);
}
return timeValue;
}
public long getTimeSetting()
{
String time = props.getProperty(TIME_KEY, "0");
long timeValue;
try
{
timeValue = Long.parseLong(time);
}
catch(Exception e)
{
reconstruct();
time = props.getProperty(TIME_KEY, "0");
timeValue = Long.parseLong(time);
}
return timeValue;
}
public String getKeywordSetting()
{
return props.getProperty(KEYWORD_KEY, "science");
}
public void setTimeSetting(long time)
{
try {
Log.d(TAG, "setTimeSetting");
FileOutputStream fos = context.openFileOutput(PREF_FILE_NAME, Context.MODE_WORLD_WRITEABLE);
props.setProperty(TIME_KEY, time+"");
props.store(fos, "a4studio");
fos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
Log.e(TAG, "can't read pref file", e);
} catch (IOException e) {
// TODO Auto-generated catch block
Log.e(TAG, "can't read pref file", e);
}
}
public void setKeywordSetting(String keyword)
{
try {
Log.d(TAG, "setKeywordSetting");
FileOutputStream fos = context.openFileOutput(PREF_FILE_NAME, Context.MODE_WORLD_WRITEABLE);
props.setProperty(KEYWORD_KEY, keyword);
props.store(fos, "a4studio");
fos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
Log.e(TAG, "can't read pref file", e);
} catch (IOException e) {
// TODO Auto-generated catch block
Log.e(TAG, "can't read pref file", e);
}
}
public void setResultNumSetting(int result)
{
try {
Log.d(TAG, "setResultNumSetting");
FileOutputStream fos = context.openFileOutput(PREF_FILE_NAME, Context.MODE_WORLD_WRITEABLE);
props.setProperty(RESULT_NUM_KEY, result+"");
props.store(fos, "a4studio");
fos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
Log.e(TAG, "can't read pref file", e);
} catch (IOException e) {
// TODO Auto-generated catch block
Log.e(TAG, "can't read pref file", e);
}
}
private void reconstruct()
{
try {
Log.d(TAG, "reconstruct");
FileOutputStream fos = null;
fos = context.openFileOutput(PREF_FILE_NAME, Context.MODE_WORLD_WRITEABLE);
/* props.setProperty(TIME_KEY, System.currentTimeMillis()+"");
props.setProperty(KEYWORD_KEY, "science");
props.store(fos, "reconstrut version");*/
fos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
Log.e(TAG, "can't create pref file", e);
} catch (IOException e) {
// TODO Auto-generated catch block
Log.e(TAG, "can't create pref file", e);
}
}
}
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