Android ListView所选项目保持突出显示
我有XML
两个ListView
,一个包含一个由选择查询(lv_cli
)填充的客户端列表,另一个包含选定的客户端的详细信息(lv_cli_det
)。我想lv_cli
在lv_cli_det
显示细节的同时让客户保持选中状态。
XML:
<ListView android:id="@+id/cli_lista"
android:layout_width="512dp"
android:layout_height="wrap_content"
android:fadeScrollbars="false"
>
</ListView>
<ListView
android:id="@+id/cli_lista_det"
android:layout_width="512dp"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/cli_lista"
android:fadeScrollbars="false" >
</ListView>
Java:
Cursor cursor = db.rawQuery("Select NrCl||';'||Nome From Clientes", null);final ListView t = (ListView)findViewById(R.id.cli_lista);
ArrayAdapter<String> myarrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1, listItems);
t.setAdapter(myarrayAdapter);
final ListView td = (ListView)findViewById(R.id.cli_lista_detalhe);
final ArrayAdapter<String> myarrayAdapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1, listItems2);
t.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String item = ((TextView)view).getText().toString();
String[] strArray = item.split("\\;");
cli.load(strArray[0].toString());
td.setAdapter(myarrayAdapter2);
listItems2.clear();
listItems2.add("Nome: " + cli.getNome());
listItems2.add("Morada: " + cli.getMorada());
listItems2.add("Localidade: " + cli.getLoca());
listItems2.add("Código Postal: " + cli.getCp());
listItems2.add("Pais: " + cli.getPais());
listItems2.add("Nif: " + cli.getNif());
listItems2.add("Tel: " + cli.getTel());
listItems2.add("Tlm: " + cli.getTlm());
listItems2.add("Tipo Preço: " + cli.getTipoPvn());
listItems2.add("Cond. Pagamento: " + cli.getCpg());
listItems2.add("Obs: " + cli.getObs());
td.setAdapter(myarrayAdapter2);
myarrayAdapter2.notifyDataSetChanged();
}
});
回答:
若要在按下时保持列表视图项目的颜色,请在列表视图项目布局中包括以下行:
android:background="@drawable/bg_key"
然后bg_key.xml
在这样的drawable
文件夹中定义:
<?xml version="1.0" encoding="utf-8" ?><selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_selected="true"
android:drawable="@color/pressed_color"/>
<item
android:drawable="@color/default_color" />
</selector>
最后,将此包含在你的中ListView onClickListener
:
listView.setOnItemClickListener(new OnItemClickListener() { @Override
public void onItemClick(AdapterView<?> parent, View view, int position,long arg3) {
view.setSelected(true);
... // Anything
}
});
这样,在任何时候都只能选择一项。你可以使用以下方式定义颜色值res/values/colors.xml:
<?xml version="1.0" encoding="utf-8"?><resources>
<color name="pressed_color">#4d90fe</color>
<color name="default_color">#ffffff</color>
</resources>
以上是 Android ListView所选项目保持突出显示 的全部内容, 来源链接: utcz.com/qa/411732.html