HashSet keySet = preferences.getStringSet("key", keySet);這一步很關(guān)鍵臼寄,否則set集合不能追加數(shù)據(jù)满败。if(keySet!=null){keySet =newHashSet(keySet);}keySet.add(key);之后在進(jìn)行添加keyEditor.putStringSet("key", keySet);keyEditor.commit();