我创建了一个包含单选列表项的对话框:
final CharSequence[] items = {"Red", "Green", "Blue"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Colors");
builder.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
}
});
AlertDialog alert = builder.create();
alert.show();
如何自定义此对话框的布局,以便对话框中的每个列表项都包含一个图标和一个文本。如何为对话框中的列表创建自定义布局?
最佳答案
创建自定义对话框的步骤:
创建对话框布局文件,如:
<RelativeLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:layout_width = "wrap_content" android:layout_height = "wrap_content"> <!-- The Title Bar --> <LinearLayout android:id="@+id/dlg_priority_titlebar" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentTop="true"> <ImageView android:src="@drawable/image" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="5dip" /> <TextView android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "Select Task Priority" android:layout_gravity = "center_vertical" /> </LinearLayout> <ListView android:id="@+id/dlg_priority_lvw" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/dlg_priority_titlebar" android:background="@drawable/layout_home_bg"> </ListView>
因为
ListView
中的布局是自定义的,所以要为ListView
创建一个布局文件:<LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android" android:orientation = "horizontal" android:layout_width = "fill_parent" android:layout_height = "fill_parent"> <ImageView android:id = "@+id/list_priority_img" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_gravity = "center_vertical" android:layout_margin = "5dip" /> <TextView android:id = "@+id/list_priority_value" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_gravity = "center_vertical" android:textsize = "28dip" android:textColor = "@drawable/ black" /> </LinearLayout>
创建自定义
Dialog
类PriorityDlg
继承自Dialog
public class PriorityDlg extends Dialog { private Context context; private ListView dlg_priority_lvw = null; public PriorityDlg(Context context) { super(context); this.context = context; // TODO Auto-generated constructor stub } public PriorityDlg(Context context, int theme) { super(context, theme); this.context = context; } @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); this.setContentView(R.layout.dlg_priority); dlg_priority_lvw = (ListView) findViewById(R.id.dlg_priority_lvw); // ListView SimpleAdapter adapter = new SimpleAdapter(context, getPriorityList(), R.layout.lvw_priority, new String[] { "list_priority_img", "list_priority_value" }, new int[] { R.id.list_priority_img, R.id.list_priority_value }); dlg_priority_lvw.setAdapter(adapter); //ListView dlg_priority_lvw .setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { } }); } private List<HashMap<String, Object>> getPriorityList() { List<HashMap<String, Object>> priorityList = new ArrayList<HashMap<String, Object>>(); HashMap<String, Object> map1 = new HashMap<String, Object>(); map1.put("list_priority_img", R.drawable.priority_not_important); map1.put("list_priority_value", context.getResources().getString( R.string.dlg_priority_not_important)); priorityList.add(map1); HashMap<String, Object> map2 = new HashMap<String, Object>(); map2.put("list_priority_img", R.drawable.priority_general); map2.put("list_priority_value", context.getResources().getString( R.string.dlg_priority_general)); priorityList.add(map2); HashMap<String, Object> map3 = new HashMap<String, Object>(); map3.put("list_priority_img", R.drawable.priority_important); map3.put("list_priority_value", context.getResources().getString( R.string.dlg_priority_important)); priorityList.add(map3); HashMap<String, Object> map4 = new HashMap<String, Object>(); map4.put("list_priority_img", R.drawable.priority_very_important); map4.put("list_priority_value", context.getResources().getString( R.string.dlg_priority_very_important)); priorityList.add(map4); return priorityList; } }
创建自定义对话框
PriorityDlg dlg = new PriorityDlg (SimpleTaskActivity.this, R.style.dlg_priority); dlg.show();
其中R.style.dlg_priority
设置对话框使用样式文件,只是让对话框去掉标题栏,当然你可以通过代码来完成这个效果:
<? Xml version = "1.0" encoding = "utf-8"?>
<resources>
<style name="dlg_priority" parent="@android:Theme.Dialog">
<item name = "android: windowNoTitle"> true </ item>
</ style>
</ resources>
关于android - 自定义具有单选列表项的对话框,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9839395/