我终于让它工作了。
首先,我扩展了 Annotation 以添加其他字段:
public class CustomAnnotation extends Annotation {
private CustomObject cObject;
public CustomObject getCustomObject() {
return cObject;
}
public void setCustomObject(CustomObject cObject) {
this.cObject = cObject;
}
public CustomAnnotation(GeoPoint point, String title, String snippet,CustomObject cObject) {
super(point, title, snippet);
this.cObject = cObject;
}
我为 CallOutView 创建了一个布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/content"
android:paddingLeft="5dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:id="@+id/balloon_inner_layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center_vertical">
<ImageView
android:id="@+id/image"
android:layout_width="50dip"
android:layout_height="50dip"
android:contentDescription="@string/descr_image"
android:src="@drawable/stub"
android:scaleType="centerCrop"
android:layout_gravity="center_vertical"/>
<LinearLayout
android:paddingLeft="5dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/price"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/address"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/sup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"/>
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="@+id/rooms"
android:visibility="gone"/>
</LinearLayout>
</LinearLayout>
在我的 MapActivity 类中,我实现了 OnAnnotationSelectionChangedListener。不要忘记设置监听器。
在 MapActivity#onAnnotationSelected 中,我将收到的注释转换为我的 CustomAnnotation,以便我可以使用其他字段,将布局膨胀到视图对象中,并将 setText 设置为我的所有 TextView:
@Override
public void onAnnotationSelected(PolarisMapView mapView,
MapCalloutView calloutView, int position, Annotation annotation) {
CustomAnnotation ca = (CustomAnnotation) annotations.get(position);
View view = (View)getLayoutInflater().inflate(R.layout.balloon_test, null);
CustomObject object = ca.getCustomObject();
TextView txView = (TextView)view.findViewById(R.id.field1);
txView.setText(object.getField1());
txView.setVisibility(View.VISIBLE);
...
//set aditional data in your callout
...
calloutView.setDisclosureEnabled(true);
calloutView.setClickable(true);
calloutView.setCustomView(view);
calloutView.show(mPolarisMapView, annotation.getPoint(), false);
}
就这样。希望它可以帮助某人。