android獲取assets資源

1.載入assets目錄下的網頁

webView.loadUrl("file:///android_asset/Demo1/index.html");

2.訪問assets目錄下的資原始檔

String name = "hallo.txt";
    InputStream resourceAsStream = getClass().getResourceAsStream("/assets/" + name);

3.獲取assets的檔案及目錄名

String fileNames[] =context.getAssets().list(path);
 

4.將assets下的檔案複製到SD卡

public void copyFilesFassets(Context context, String oldPath, String newPath) {

        try {
            String fileNames[] = context.getAssets().list(oldPath);//獲取assets目錄下的所有檔案及目錄名
            if (fileNames.length > 0) {//如果是目錄
                File file = new File(newPath);
                file.mkdirs();//如果資料夾不存在，則遞迴
 

                for (String fileName : fileNames) {
                    copyFilesFassets(context, oldPath + "/" + fileName, newPath + "/" + fileName);
                }
            } else {//如果是檔案
                InputStream is = context.getAssets().open(oldPath);
                FileOutputStream fos = new
 
 FileOutputStream(new File(newPath));
                byte[] buffer = new byte[1024];
                int byteCount = 0;
                while ((byteCount = is.read(buffer)) != -1) {//迴圈從輸入流讀取 buffer位元組
                    fos.write(buffer, 0, byteCount);//將讀取的輸入流寫入到輸出流
                }
                fos.flush();//重新整理緩衝區
                is.close();
                fos.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }