Mobile Platform as a Service:Key-value pair storage

The key-value pair storage provided by mPaaS is similar with native Android SharedPreferences, providing a similar interface. The underlying is the key-value-pair storage system implemented by mPaaS.

Examples

• Create APSharedPreferences
• Query data
• Insert data
• Delete data

Create APSharedPreferences

// The context is Android context; GROUP_ID can be regarded as the file name of SharedPreferences
APSharedPreferences mAPSharedPreferences = SharedPreferencesManager.getInstance(context, GROUP_ID);

Query data

    /**
     * Initialize the data of key-value pairs
     */
    private void initData() {
        mData.clear();
        try {
            // Get the information of all key-value pairs
            mData.putAll((Map<String, String>) mAPSharedPreferences.getAll());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

Insert data

    /**
     * Insert key-value pairs
     *
     * @param key   key
     * @param value value
     */
    private void insertKeyValue(String key, String value) {
        mAPSharedPreferences.putString(key, value);
        mAPSharedPreferences.commit();
    }

Delete data

    /**
     * Delete key-value pairs
     *
     * @param key key
     */
    private void deleteKeyValue(String key) {
        mAPSharedPreferences.remove(key);
        mAPSharedPreferences.commit();
    }