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安卓開發中動態添加lsitView 代碼實例

 這個很簡單 就是為了說明別忘了adapter.notifyDataSetChanged();

  喚醒一下,其實這個喚醒也就是在button下用 或者在別的控件下調用 如果是在getView下就不必了

  java代碼:

  public class DynamicListItems extends ListActivity {

  private static final String ITEM_KEY = "key";

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

  private SimpleAdapter adapter;

  private EditText newValue;

  @Override

  public void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  setContentView(R.layout.dynamic_list);

  newValue = (EditText) findViewById(R.id.new_value_field);

  setListAdapter(new SimpleAdapter(this, list, R.layout.row, new String[] { ITEM_KEY }, new int[] { R.id.list_value }));

  ((ImageButton) findViewById(R.id.button)).setOnClickListener(getBtnClickListener());

  }

  private OnClickListener getBtnClickListener() {

  return new OnClickListener() {

  public void onClick(View view) {

  try {

  HashMap<String, String> item = new HashMap<String, String>();

  item.put(ITEM_KEY, newValue.getText().toString());

  list.add(item);

  adapter.notifyDataSetChanged();

  } catch (NullPointerException e) {

  Log.i("[Dynamic Items]", "Tried to add null value");

  }

  }

  };

  }

  }

  Java代碼:

  <?xml version="1.0" encoding="utf-8"?>

  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

  android:orientation="vertical"

  android:layout_width="fill_parent"

  android:layout_height="fill_parent"

  >

  <ListView android:id="@+id/android:list"

  android:layout_width="fill_parent"

  android:layout_height="0px"

  android:layout_weight="1"

  android:cacheColorHint="#00000000">

  </ListView>

  <LinearLayout

  android:orientation="horizontal"

  android:layout_width="wrap_content"

  android:layout_height="wrap_content"

  android:layout_marginTop="6px"

  android:layout_marginBottom="8px"

  android:layout_marginLeft="8px"

  android:layout_marginRight="8px"

  android:background="#00000000">

  <ImageButton

  android:id="@+id/button"

  android:layout_width="100px"

  android:layout_height="100px"

  android:src="@android:drawable/ic_menu_add" />

  </LinearLayout>

  <LinearLayout

  android:orientation="vertical"

  android:layout_width="230px"

  android:layout_height="wrap_content"

  android:layout_marginTop="8px"

  android:layout_marginBottom="8px"

  android:layout_marginLeft="0px"

  android:layout_marginRight="28px"

  android:background="#cccccc00" >

  <EditText android:id="@+id/new_value_field"

  android:textColor="#020905"

  android:textSize="18sp"

  android:layout_marginTop="6px"

  android:layout_marginBottom="8px"

  android:layout_marginLeft="12px"

  android:layout_marginRight="12px"

  android:layout_width="210px"

  android:layout_height="wrap_content"

  android:layout_weight="1"/>

  </LinearLayout>

  </LinearLayout>

  ROw:

  <?xml version="1.0" encoding="utf-8"?>

  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

  android:layout_width="fill_parent"

  android:layout_height="wrap_content"

  android:background="#00000000">

  <TextView

  android:id="@+id/list_value"

  android:layout_width="fill_parent"

  android:layout_height="wrap_content"

  />

  </LinearLayout>

   
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