android sdk中自带的json

写下这篇文章只是为了记录下一些知识，身处这个知识大爆炸的年代，学到后面有些基本的知识会忘记，或暂时想不起来，这里记录下，方便以后查阅。

json的数据格式：{key:value,key:value}

json对象字符串转换

private static void test2() {

String json = “{‘name’: ‘亲亲宝宝’,'array’:[{'a':'111','b':'222','c':'333'},{},{'a':'999'}],’address’:'亲亲宝宝’}”;

try {

JSONObject jsonObject = JSONObject.fromObject(json);

String name = jsonObject.getString(“name”);

String address = jsonObject.getString(“address”);

System.out.println(“name is:” + name);

System.out.println(“address is:” + address);

JSONArray jsonArray = jsonObject.getJSONArray(“array”);

for (int i = 0; i < jsonArray.size(); i++) {

System.out.println(“item ” + i + ” :” + jsonArray.getString(i));

}

} catch (JSONException e) {

e.printStackTrace();

}

}

json数组 转换，数组以[开头

private static void test1() {

boolean[] boolArray = new boolean[]{true,false,true};

JSONArray jsonArray1 = JSONArray.fromObject( boolArray );

System.out.println( jsonArray1 );

// prints [true,false,true]

List list = new ArrayList();

list.add( “first” );

list.add( “second” );

JSONArray jsonArray2 = JSONArray.fromObject( list );

System.out.println( jsonArray2 );

// prints ["first","second"]

JSONArray jsonArray3 = JSONArray.fromObject( “['json','is','easy']” );

System.out.println( jsonArray3 );

// prints ["json","is","easy"]

}