从Sdcard动态读取文件 [英] Dynamically read files from Sdcard

问题描述

下面是我的代码阅读文件：

 文件f = new File（Environment.getExternalStorageDirectory（）+/ f1.txt）; 
 fileIS = new FileInputStream（f）; 
 BufferedReader buf = new BufferedReader（new InputStreamReader（fileIS））; 
 String readString = new String（）; 
 //只是读取每一行并将其传递给调试器
 while（（readString = buf.readLine（））！= null）{
 textdata.setText（readString）; 
 Log.d（line：，readString）; 
} 
} catch（FileNotFoundException e）{
 e.printStackTrace（）; 
} catch（IOException e）{
 e.printStackTrace（）; 
} 
  

但是我需要动态地从sdcard读取文件。

这里我已经把它作为 f1.txt

解决方案

尝试这样：

 文件f = new File（Environment.getExternalStorageDirectory（）。toString（）+ /音频）; 
 if（f.isDirectory（））
 {
 String files [] = f.list（）; （int i = 0; i< files.length; i ++）
 {
 Log.d（，files [i]）; 
 
} 
} 
  

Guys i have a text file in sdcard i need to read that file.

Below is my code to read files:

 File f = new File(Environment.getExternalStorageDirectory()+"/f1.txt");
       fileIS = new FileInputStream(f);
            BufferedReader buf = new BufferedReader(new InputStreamReader(fileIS));
           String readString = new String(); 
           //just reading each line and pass it on the debugger
           while((readString = buf.readLine())!= null){
              textdata.setText(readString);
              Log.d("line: ", readString);
           }
        } catch (FileNotFoundException e) {
           e.printStackTrace();
        } catch (IOException e){
           e.printStackTrace();
        }

But i need to read files from sdcard dynamically.

here i have given it as f1.txt

解决方案

Try this:

File f = new File(Environment.getExternalStorageDirectory().toString() + "/audio");
if (f.isDirectory())
{
    String files[] = f.list();
    for (int i = 0; i < files.length; i++)
    {
        Log.d("", files[i]);
    }
}

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