使用ContentProvider访问其他应用的SharedPreferences数据

@Override
    public Cursor query(Uri uri, String[] projection, String selection,
            String[] selectionArgs, String sortOrder) {
        switch (sUriMatcher.match(uri)) {
        case SP:
            SharedPreferences sp = getSharedPreference(SP_NAME_STRING);
                //两列 数据
            MatrixCursor cursor = new MatrixCursor(new String[] { "key", "value" });
            Map<String, ?> map = sp.getAll();
            if (map == null || map.size() == 0) {
                Log.i(getClass().getSimpleName(), "map 为空");
                return null;
            }
            if (selection != null) {
                Log.i(getClass().getSimpleName(), "查询 单条");
                //统一以String 类型返回
                cursor.addRow(new String[] { selection, String.valueOf(map.get(selection)) });
            } else {
                Log.i(getClass().getSimpleName(), "查询 全部");
                Iterator<String> iterator = map.keySet().iterator();
                while (iterator.hasNext()) {
                    String key = iterator.next();
                    cursor.addRow(new String[] { key, String.valueOf(map.get(key)) });
                }
            }
            return cursor;

        default:
            break;
        }

        return null;
    }

    private SharedPreferences getSharedPreference(String spName) {
        return getContext().getSharedPreferences(spName, Context.MODE_PRIVATE);
    }

Cursor cursor = getContentResolver().query(
                Uri.parse("content://com.secapp.auth/SEC"), null,
                selection, null, null);
        if(cursor==null)
        {
            Toast.makeText(this, "cursor==null", Toast.LENGTH_SHORT).show();
            return;
        }
        while (cursor.moveToNext()) {
            System.out.println("key=" + cursor.getString(0) + "   value="
                    + cursor.getString(1));

//            if (cursor.getString(0).equals("keyInt")) {
//                int i = cursor.getInt(1);
//                if (i == 10) {
//                    System.out.println("i=" + i);
//                }
//            }

        }