获取数据从SQL数据库（没有MYSQL DB）（在Android）使用JSON与PHP[重复]

Question

我试过下面的代码

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        list = (ListView) findViewById(R.id.listView);
        personList = new ArrayList<HashMap<String,String>>();//Warning in this line Explicit type arg <> diamond 
        getData();
    }

但我在这一行收到警告

新数组

Answer 1

替换你的

personList = new ArrayList<HashMap<String,String>>();

行至

personList = new ArrayList<>();