什么是readStream()方法？我在任何地方都找不到,

Question

我搜索了如何使用目录"assets"下的资源,然后我找到一个片段:

AssetManager assets = getAssets();
((TextView)findViewById(R.id.txAssets)).setText(**readStream**(assets.open("data.txt")));

我只是找不到什么是readStream方法,它不是在谷歌apis我试图下载最新的Java api文件,但仍然找不到它,有人知道吗？

Answer 1

正如@Felix所说,它是一种用户定义的方法.在您链接的页面上,他们定义了readStream,如下所示:

  private String readStream(InputStream is) {
    try {
      ByteArrayOutputStream bo = new ByteArrayOutputStream();
      int i = is.read();
      while(i != -1) {
        bo.write(i);
        i = is.read();
      }
      return bo.toString();
    } catch (IOException e) {
      return "";
    }
}

Answer 2

这是更好的解决方案:

private String readStream(InputStream is) throws IOException {
    StringBuilder sb = new StringBuilder();  
    BufferedReader r = new BufferedReader(new InputStreamReader(is),1000);  
    for (String line = r.readLine(); line != null; line =r.readLine()){  
        sb.append(line);  
    }  
    is.close();  
    return sb.toString();
}

它比ByteArrayOutputStream逻辑快得多.