簡易上下切換專項練習(一)
阿新 • • 發佈：2018-12-12
簡易上下切換專項練習(一)
private GridView top; private GridView bottom; private List<Bean> tops = new ArrayList<>(); private List<Bean> bottoms = new ArrayList<>(); private MyTopAdapter topAdapter; private MyBottomAdapter bottomAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //初始化控制元件 top = findViewById(R.id.top_gridview); bottom = findViewById(R.id.bottom_gridview); //建立標題資料 for (int i = 0; i < 15; i++) { tops.add(new Bean("上部" + i)); } for (int i = 0; i < 10; i++) { bottoms.add(new Bean("下部" + i)); } //設定介面卡 topAdapter = new MyTopAdapter(MainActivity.this, tops); bottomAdapter = new MyBottomAdapter(MainActivity.this, bottoms); top.setAdapter(topAdapter); bottom.setAdapter(bottomAdapter); //長按監聽 top.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() { @Override public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { Bean bean = tops.get(position); tops.remove(bean); bottoms.add(bean); topAdapter.notifyDataSetChanged(); bottomAdapter.notifyDataSetChanged(); return false; } }); bottom.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Bean bean = bottoms.get(position); bottoms.remove(position); tops.add(bean); topAdapter.notifyDataSetChanged(); bottomAdapter.notifyDataSetChanged(); } }); } }