我試圖保存StreetViewPragora的當前位置,例如,如果用戶最初是在肖像中,並通過點擊箭頭和探索區域來更改StreetViewPanorama中的位置然後切換到橫向我想設置要恢復的最後一個位置,以便用戶可以繼續探索該區域。目前,當我嘗試訪問「streetViewPanorama.getLocation()」時,streetViewPanorama爲Null,但這不是問題。我認爲我拯救國家的方式是不對的,應該有更好的辦法。所以我請求你的建議,請!在方向更改時保存StreetViewFragment的狀態
這是我StreetViewFragment代碼:
public class StreetViewFragment extends ViperFragment implements OnStreetViewPanoramaReadyCallback,
PropertyDetailsStreetView {
private static final String KEY_PROPERTY_ID = "property_id_street_view";
private static final String KEY_PROPERTY_LAT = "property_lat";
private static final String KEY_PROPERTY_LON = "property_lon";
private Bundle savedInstances;
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
streetViewPanoramaFragment = (StreetViewPanoramaFragment)
getActivity().getFragmentManager().findFragmentById(R.id.streetviewpanorama);
streetViewPanoramaFragment.getStreetViewPanoramaAsync(this);
savedInstances = savedInstanceState;
}
@Override
public void onSaveInstanceState(Bundle outState) {
outState.putDouble(KEY_PROPERTY_LAT, streetViewPanorama.getLocation().position.latitude);
outState.putDouble(KEY_PROPERTY_LON, streetViewPanorama.getLocation().position.longitude);
super.onSaveInstanceState(outState);
}
@Override
public void onStreetViewPanoramaReady(StreetViewPanorama streetViewPanorama) {
this.streetViewPanorama = streetViewPanorama;
presenter.onStreetViewPanoramaReady(getArguments().getLong(KEY_PROPERTY_ID));
if (savedInstances != null) {
this.streetViewPanorama.setPosition(
new LatLng(savedInstances.getLong(KEY_PROPERTY_LAT),
savedInstances.getLong(KEY_PROPERTY_LON)));
}
}
感謝您的建議,但我不想擴展Google的片段。 –