android ArrayAdapter 如何動態更改數據

在android開發中ListView是比較常用的組件，它以列表的形式展示具體內容，並且能夠根據數據的長度自適應顯示，使用adpater與listview捆綁后，有時希望在程序使用過程中能動態的更改listview中顯示的數據

使用adpater與listview捆綁后，有時希望在程序使用過程中能動態的更改listview中顯示的數據，如何處理?

一、關鍵代碼段

代碼如下

復制代碼

private ListView mListView;     private Button mBtnChange;     private android.view.View.OnClickListener mCancelClick;     private ArrayList<String> mStarNameList = new ArrayList<String>();     private String[] mAnimalNameList = new String[] {"Dog","Cat","Snake","Duck","Bird"};     private String[] mStarNameList1 = new String[] {"Kobe","James","Durant","Wade","Love"};     private ArrayAdapter<String> mAdapter;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         this.setCtrlsEventHandler();         this.mAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_checked,mStarNameList);         this.mListView = (ListView)findViewById(R.id.listView1);         this.mBtnChange = (Button)findViewById(R.id.button1);         this.mBtnChange.setOnClickListener(this.mCancelClick);         this.mStarNameList.add("Kobe");         this.mStarNameList.add("James");         this.mStarNameList.add("Durant");         this.mStarNameList.add("Wade");         this.mListView.setAdapter(this.mAdapter);         this.mListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);     }     private boolean mIsMutex = false;     private void setCtrlsEventHandler()     {         this.mCancelClick = new View.OnClickListener()         {             @Override             public void onClick(View v)             {                 if(mIsMutex)                 {                     mBtnChange.setText("True");                     mStarNameList.clear();                     for(int i=0;i<mAnimalNameList.length;i++)                         mStarNameList.add(mAnimalNameList[i]);                     mAdapter.notifyDataSetChanged();                     mIsMutex = false;                 }                 else                 {                     mBtnChange.setText("False");                     mStarNameList.clear();                     for(int i=0;i<mStarNameList1.length;i++)                         mStarNameList.add(mStarNameList1[i]);                     mAdapter.notifyDataSetChanged();                     mIsMutex = true;                 }             }         };     }

功能實現主要原理：

用ArrayList  mStarNameList 給Adapter填充數據，再將listview與adapter捆綁。

當要修改數據時候，只需要對mStarNameList 進行修改，再調用Adapter.notifyDataSetChanged()就可以實現效果。

二、執行效果