Android 我找不到试图用filereader类读取的文件
我已经创建了一个名为ECGFilereader的文件读取器类,它应该打开一个.txt文件,但当我调试时,它会将FileNotFoundException抛出到使用txt.txt文件的波形类中 下面是我的代码,任何帮助或建议都将不胜感激 ECGFilereader.javaAndroid 我找不到试图用filereader类读取的文件,android,file,text,filepath,Android,File,Text,Filepath,我已经创建了一个名为ECGFilereader的文件读取器类,它应该打开一个.txt文件,但当我调试时,它会将FileNotFoundException抛出到使用txt.txt文件的波形类中 下面是我的代码,任何帮助或建议都将不胜感激 ECGFilereader.java import java.io.File; import java.io.FileNotFoundException; import java.util.Scanner; public class ECGFilereader
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class ECGFilereader {
public final static int numChannels = 12;
public final static int numSamples = 500*6; //500 = fs so *6 for 6 seconds of data
private File file;
private Scanner scanner;
int [] [] ecg = new int [numChannels] [numSamples];
/*private String path;
public ECGFilereader(String file_path){
path = file_path;
} */
public ECGFilereader (String fname) throws FileNotFoundException
{
file = new File("res/raw/ecg.txt");
scanner = new Scanner(file);
}
public boolean ReadFile(Waveform[] waves)
{
for (int m=0; m<numSamples && scanner.hasNextInt(); m++)
{
int x = scanner.nextInt();
for (int chan = 0; chan<numChannels && scanner.hasNextInt(); chan++)
{
ecg [chan] [m] = scanner.nextInt();
}
}
for (int chan=0; chan<numChannels; chan++)
waves[chan].setSignal(ecg[chan]);
return false;
}
}
导入java.io.File;
导入java.io.FileNotFoundException;
导入java.util.Scanner;
公共类ECGFilereader{
公共最终静态整数通道=12;
public final static int numSamples=500*6;//500=fs so*6表示6秒的数据
私有文件;
私人扫描仪;
int[]ecg=新的int[numChannels][numSamples];
/*私有字符串路径;
公共ECGFilereader(字符串文件\u路径){
路径=文件路径;
} */
公共ECGFilereader(字符串fname)引发FileNotFoundException
{
file=新文件(“res/raw/ecg.txt”);
扫描仪=新扫描仪(文件);
}
公共布尔读取文件(波形[]波)
{
对于(int m=0;m您不能直接访问res文件夹中的文件。如果您想访问原始文件夹中的文件,请尝试getResource()。openrawsource(int id)
请看这里:感谢您的快速响应,但结果表明,在原始文件夹中保存数据是完全错误的,我需要将数据存储在sd卡上,我应该能够做到这一点。
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.Path;
import android.graphics.PointF;
public class Waveform {
private int[] signal;
public void setSignal(int [] x)
{
signal = new int[x.length];
for (int n = 0; n < x.length; n++)
signal[n] = x[n];
}
public void drawSignal(Canvas c, PointF pos)
{
Paint paint = new Paint();
//paint.setColor(getResources().getColor(R.color.ECG_WaveI));
paint.setColor(Color.BLACK);
paint.setStyle(Style.STROKE);
Path path = new Path();
path.moveTo(pos.x, pos.y);
for (int n=1; n<ECGFilereader.numSamples; n++)
path.lineTo(pos.x, (pos.y+signal[(int) n]));
c.drawPath(path, paint);
}
}