Android Don';屏幕旋转时的t调用方法
我的父片段名为Android Don';屏幕旋转时的t调用方法,android,android-fragments,Android,Android Fragments,我的父片段名为OpFragment。从这个片段继承了我的应用程序中的所有片段 public abstract class OpFragment extends Fragment { private Loading loading; public abstract int getLayoutId(); public abstract void getData(); public abstract void setListeners(); prot
OpFragment
。从这个片段继承了我的应用程序中的所有片段
public abstract class OpFragment extends Fragment {
private Loading loading;
public abstract int getLayoutId();
public abstract void getData();
public abstract void setListeners();
protected BackHandlerInterface backHandlerInterface;
public boolean onBackPressed(){
return false;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
if(!(getActivity() instanceof BackHandlerInterface)) {
throw new ClassCastException("Hosting activity must implement BackHandlerInterface");
} else {
backHandlerInterface = (BackHandlerInterface) getActivity();
}
FragmentArgs.inject(this);
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(getLayoutId(), container, false);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
if(!isAdded()){
return;
}
getData();
setListeners();
}
protected String returnName() {
return null;
}
public void showTitle() {
EventBus.getDefault().post(new ShowName(returnName()));
}
@Override
public void onDestroyView() {
super.onDestroyView();
}
public Loading getLoading() {
if (this.loading == null) {
this.loading = new Loading(this.getActivity());
}
return this.loading;
}
/**
* Gets a component for dependency injection by its type.
*/
@SuppressWarnings("unchecked")
protected <C> C getComponent(Class<C> componentType) {
return componentType.cast(((HasComponent<C>) getActivity()).getComponent());
}
@Override
public void onStart() {
super.onStart();
backHandlerInterface.setSelectedFragment(this);
}
public interface BackHandlerInterface {
void setSelectedFragment(OpFragment backHandledFragment);
}
@Override
public void onResume() {
super.onResume();
sendGAScreens();
}
private void sendGAScreens() {
final Tracker tracker = OpApp.getDefaultTracker();
if(tracker != null) {
tracker.setScreenName(getClass().getSimpleName());
tracker.send(new HitBuilders.ScreenViewBuilder().build());
}
}
}
公共抽象类OpFragment扩展了Fragment{
私人装载;
公共摘要int getLayoutId();
公共摘要void getData();
公共抽象void setListeners();
受保护的BackHandlerInterface BackHandlerInterface;
公共布尔值onBackPressed(){
返回false;
}
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setRetainInstance(真);
if(!(getActivity()实例BackHandlerInterface)){
抛出新的ClassCastException(“宿主活动必须实现BackHandlerInterface”);
}否则{
backHandlerInterface=(backHandlerInterface)getActivity();
}
FragmentArgs.注入(此);
}
@可空
@凌驾
CreateView上的公共视图(布局、充气机、视图组容器、捆绑包保存状态){
返回充气器。充气(getLayoutId(),容器,错误);
}
@凌驾
已创建视图上的公共void(视图,@Nullable Bundle savedInstanceState){
super.onViewCreated(视图,savedInstanceState);
如果(!isAdded()){
返回;
}
getData();
setListeners();
}
受保护的字符串returnName(){
返回null;
}
公开无效showTitle(){
EventBus.getDefault().post(新的ShowName(returnName());
}
@凌驾
公共无效onDestroyView(){
super.onDestroyView();
}
公共加载getLoading(){
if(this.loading==null){
this.loading=新加载(this.getActivity());
}
返回此文件。正在加载;
}
/**
*按类型获取依赖项注入的组件。
*/
@抑制警告(“未选中”)
受保护的C getComponent(类componentType){
返回componentType.cast(((HasComponent)getActivity()).getComponent());
}
@凌驾
public void onStart(){
super.onStart();
backHandlerInterface.setSelectedFragment(此);
}
公共接口BackHandlerInterface{
void setSelectedFragment(OpFragment backhandledframent);
}
@凌驾
恢复时公开作废(){
super.onResume();
sendGAScreens();
}
私人气体过滤器(){
final Tracker Tracker=OpApp.getDefaultTracker();
如果(跟踪器!=null){
setScreenName(getClass().getSimpleName());
send(新的HitBuilders.ScreenViewBuilder().build());
}
}
}
有方法getData()
和setListeners()
在onViewCreated
中。
我不想在屏幕旋转后回忆起这种方法。我该怎么做?
简单地检查
savedInstanceState==null
并没有得到预期的结果。重写此方法以检测片段中的屏幕旋转,并设置一些标志,如果其屏幕旋转。如下图所示:
@Override
public void onConfigurationChanged(Configuration newConfig)
{
Log.d("tag", "config changed");
super.onConfigurationChanged(newConfig);
int orientation = newConfig.orientation;
if (orientation == Configuration.ORIENTATION_PORTRAIT || orientation == Configuration.ORIENTATION_LANDSCAPE)
flag= true;
....
}
在您的onViewCreated()
中,执行以下操作
if(!flag){
// call your functions
}