android 读取 Assets 文件

 // 读取Assets txt文件
1 StringBuffer content = new StringBuffer();
InputStream is = null;
is = getAssets().open("files/***.txt");

if (is != null) {
   InputStreamReader inputreader = new InputStreamReader(is);
   BufferedReader buffreader = new BufferedReader(inputreader);
   String line;
   // 分行读取
   while ((line = buffreader.readLine()) != null) {
        content.append(line);
        content.append("\n");
   }
   is.close();
}

 读取并显示图片：

//获取asset下某个文件夹中的图片资源
   try {
      AssetManager assetManager = getAssets();
      InputStream is = assetManager.open("ml_lszn_Fresh/Fresh_02.jpg");
      Bitmap bitmap = BitmapFactory.decodeStream(is);
      if (bitmap != null) {
        System.out.println("width=" + bitmap.getWidth() + " ,height="+ bitmap.getHeight());
      } else {
        System.out.println("bitmap == null");
      }
   } catch (Exception e) {
      System.out.println("异常信息:" + e.toString());
   }

 

// 遍历asset下某个文件夹中的所有图片资源
   try {
      InputStream is=null;
      Bitmap bitmap=null;
      String dirPath="ml_lszn_Fresh";
      String photoName=null;
      AssetManager assetManager = getAssets();
      //使用list()方法获取某文件夹下所有文件的名字
      String [] photos=assetManager.list(dirPath);
      for (int i = 0; i < photos.length; i++) {
        photoName=photos[i];
        //利用dirPath+"/"+photoName组拼某文件完整路径
        is = assetManager.open(dirPath+"/"+photoName);
        bitmap = BitmapFactory.decodeStream(is);
        System.out.println(" i="+i+" ,width=" + bitmap.getWidth() + " ,height="+ bitmap.getHeight());
      }
   } catch (Exception e) {
      System.out.println("异常信息:" + e.toString());
   }