Question

在我当前的Android应用程序中，我正在使用处理程序从游戏会话中读取数据，然后将其写入文件。

目前，所有数据都写入一个文件。即每个单独的会话数据都在一个文件中。我想改变这一点，以便每次新游戏完成后，它的数据都会输入到自己独立的文件中。

我该怎么办？

当前处理程序：

final Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {

            // msg.what determines the type of each message
            switch (msg.what) {
            case TGDevice.MSG_EEG_POWER:

                eegPower = (TGEegPower) msg.obj;
                //trace code
                Log.d("LSD", "highAlpha: " + eegPower.highAlpha);
                Log.d("LSD", "lowAlpha: " + eegPower.lowAlpha);
                Log.d("LSD", "highBeta: " + eegPower.highBeta);
                Log.d("LSD", "lowBeta: " + eegPower.lowBeta);
                Log.d("LSD", "lowGamma: " + eegPower.lowGamma);
                Log.d("LSD", "midGamma: " + eegPower.midGamma);
                Log.d("LSD", "delta: " + eegPower.delta);
                Log.d("LSD", "theta: " + eegPower.theta);

                //adding all the EEGpowers to an arraylist to help add them to file
                ArrayList<String> EEGPowers= new ArrayList<String>();

                EEGPowers.add("highAlpha: " + eegPower.highAlpha);
                EEGPowers.add("lowAlpha: " + eegPower.lowAlpha);
                EEGPowers.add("highBeta: " + eegPower.highBeta);
                EEGPowers.add("lowBeta: " + eegPower.lowBeta);
                EEGPowers.add("lowGamma: " + eegPower.lowGamma);
                EEGPowers.add("midGamma: " + eegPower.midGamma);
                EEGPowers.add("delta: " + eegPower.delta);
                EEGPowers.add("theta: " + eegPower.theta);



                //setting up the array of maxlength etc
                spaces[0] = "";
                for(int i=1; i<maxWordLength ;i++){
                    spaces[i] = spaces[i-1]+" ";
                }

                int seconds=0;

                //creating header in txt file
                writeToFileEEGPower(order("Seconds")+order("highAlpha")+order("lowAlpha")+order("highBeta")+order("LowBeta")+
                        order("lowGamma")+order("midGamma")+order("Delta")+order("Theta")+ "\n");

                //creating the string to be written to file
                String line = order(seconds+"")+order(eegPower.highAlpha+"")+order(eegPower.lowAlpha+"")+order(eegPower.highBeta+"")+
                        order(eegPower.lowBeta+"")+order(eegPower.midGamma+"")+order(eegPower.delta+"")+order(eegPower.theta+"")+ "\n";

                //write the string to file
                writeToFileEEGPower(line);

当前的writetofile方法：

public void writeToFileEEGPower(String data){

            //creating time for the file 
            Time t= new Time();
            int timeFileSecond= t.second;
            int timeFileDate= t.yearDay;
            int timeFileYear= t.year;

            //creating file name
            String fileName= "MathsGame" + timeFileSecond + timeFileDate + timeFileYear + android.os.Build.SERIAL;

            //creating the file where the contents will be written to
            File file= new File(dir, fileName + ".txt");

            FileOutputStream os;

            try{

                boolean append= true;

                os= new FileOutputStream(file, append);

                String writeMe =data + "\n";

                os.write(writeMe.getBytes());

                os.close();
            } catch(FileNotFoundException e){

                e.printStackTrace();
            }catch(IOException e){

                e.printStackTrace();
            }

        }

编辑：

//CURRENTLY CREATES A FILE BASED ON MINUTE, NEED TO CHANGE
            Time t= new Time();
            t.setToNow();
            int timeFileMinute= t.minute;
            int timeFileDate= t.yearDay;
            int timeFileYear= t.year;


            //creating file name
            String fileName= timeFileMinute + timeFileDate + timeFileYear + android.os.Build.SERIAL;

            //creating the file where the contents will be written to
            File file= new File(dir, fileName + ".txt");

Answer 1

Time t= new Time();

记录将Time对象初始化为1970年1月1日，因此所有文件都是相同的。

要通过尝试执行您所看到的内容，请将对象设置为：

Time t= new Time();
t.setToNow();
timeFileSecond= t.second;
//etc

Android：写入单独的文件？

1 个答案: