Android API编程之Assets文件操作示例

public class ReadAssetActivity extends Activity {  private TextView mTextView;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.read_asset);    initViews();    readAssetsData();    listAssetsFiles("fonts");// 列出文件目录  }  private void readAssetsData() {    InputStream is = null;    try {      // 读取Assets文件夹下对应文件的输入流      is = getAssets().open("asset_test.txt");      // 获取文件输入流的总大小      int size = is.available();      // 把整个文件流放到一个Byte[]缓冲区      byte[] buffer = new byte[size];      is.read(buffer);      is.close();      // 将缓冲区数据转换为字符串      String text = new String(buffer);      mTextView.setText(text);    } catch (IOException e) {      e.printStackTrace();    } finally {      try {        if (is != null) {          is.close();        }      } catch (IOException e) {        // TODO Auto-generated catch block        e.printStackTrace();      }    }  }  private void initViews() {    mTextView = (TextView) findViewById(R.id.text);  }  /**   * 获取Assets下指定文件夹下文件数量 情况   *   * @description：   * @author ldm   * @date 2016-4-27 上午9:25:54   */  private void listAssetsFiles(String filePath) {    AssetManager am = getAssets();    String[] fileName;    try {      fileName = am.list(filePath);      if (fileName.length > 0) {        for (int i = 0; i < fileName.length; i++) {          Log.e("ldm", String.format("在" + filePath              + "中文件路下有:[%d] 文件数量", fileName.length));        }      }    } catch (IOException e) {      e.printStackTrace();    }  }}