创建自定义对话框的步骤:
创建对话框布局文件,例如:
<RelativeLayout xmlns:android = "http://schemas.android.com/apk/res/android"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content">
<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>
由于ListView
中的布局是自定义的,因此需要为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>
创建一个自定义的 Dialog
类 PriorityDlg
,它继承自 Dialog
public class PriorityDlg extends Dialog {
private Context context;
private ListView dlg_priority_lvw = null;
public PriorityDlg(Context context) {
super(context);
this.context = context;
}
public PriorityDlg(Context context, int theme) {
super(context, theme);
this.context = context;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.dlg_priority);
dlg_priority_lvw = (ListView) findViewById(R.id.dlg_priority_lvw);
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);
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();
R.style.dlg_priority
设置了对话框使用的样式文件,可以让对话框去掉标题栏。当然,你也可以编写代码来实现这个效果:
<? Xml version = "1.0" encoding = "utf-8"?>
<resources>
<style name="dlg_priority" parent="@android:Theme.Dialog">
<item name = "android: windowNoTitle"> true </ item>
</ style>
</ resources>