android开发步步为营之54:读取assets，raw文件夹下文件

一、读取assets文件下文件products.json

public String readAssetFile(Context c, String file) {
        Elapsed profiler = new Elapsed();
        BufferedReader bufReader = null;
        try {
            InputStreamReader inputReader = new InputStreamReader(c.getResources().getAssets().open(file));
            bufReader = new BufferedReader(inputReader);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = bufReader.readLine()) != null)
                sb.append(line);
            return sb.toString();
        } catch (Exception e) {
            LogUtil.i(TAG, "FileUtils.getFromAssets Exception:" + file);
            return "";
        } catch (OutOfMemoryError e) {
            LogUtil.i(TAG, "FileUtils.getFromAssets OutOfMemoryError:" + file);
            return "";
        } finally {
            CommonUtils.close(bufReader);
            profiler.log("FileUtils.getFromAssets:" + file);
        }
    }

readAssetFile(testActivity.this,"product.json");

二、读取res/raw文件夹下文件cities.txt

 private void loadAddressDataNew() {
        countries = new ArrayList<Country>();
        InputStreamReader inputStreamReader = null;
        try {
            inputStreamReader = new InputStreamReader(getResources().openRawResource(R.raw.cities), "utf8");
        } catch (UnsupportedEncodingException e1) {
            e1.printStackTrace();
        }
        BufferedReader reader = new BufferedReader(inputStreamReader);
        String line;
        try {
            while ((line = reader.readLine()) != null) {
                //第三位为|则该string为国家     CN|China
                if (line.substring(2, 3).equals("|")) {
                    Country country = new Country();
                    country.setCountryId(line.substring(0, 2));
                    country.setCountryName(line.substring(3));
                    countries.add(country);
                }
                //省 or 州  CN_Anhui|Anhui
                if (line.substring(0, line.lastIndexOf("|")).lastIndexOf("_") == 2) {
                    State state = new State();
                    state.setStateName(line.substring(line.lastIndexOf("|") + 1));
                    if (line.indexOf(countries.get(countries.size() - 1).getCountryId()) != -1) {
                        countries.get(countries.size() - 1).getStates().add(state);
                    }
                }

                //城市CN_Anhui_Anqing|Anqing
                if (line.substring(0, line.lastIndexOf("|")).lastIndexOf("_") > 2) {
                    City city = new City();
                    city.setCityName(line.substring(line.lastIndexOf("|") + 1));
                    int stateIndex = countries.get(countries.size() - 1).getStates().size() - 1;
                    if (line.indexOf(countries.get(countries.size() - 1).getStates().get(stateIndex).getStateName()) != -1) {
                        countries.get(countries.size() - 1).getStates().get(stateIndex).getCities().add(city);
                    }

                }
                //                }

            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }