6
Hemen her şeyi denedikten sonra, boş bir nesne başvurusu çekmeden getmap görünmüyor olabilir. Bir google mapfragmenti bir fragmana şişirmeye çalışıyorum, ancak her defasında bir getmap null nesnesini tutuyorum.null bir nesne başvurusu üzerinde SupportMapFragment.getMap()
İşte bu noktada herhangi bir yardım için umutsuz değilim benim kod
, ben sadece her şeyi denedim.
hata
java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.maps.GoogleMap com.google.android.gms.maps.SupportMapFragment.getMap()' on a null object reference
at com.gnumbu.errolgreen.importedapplication.ViewMapFragment.onViewCreated(ViewMapFragment.java:122)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:971)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1136)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1499)
at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:488)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1073)
at android.support.v4.view.ViewPager.populate(ViewPager.java:919)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:453)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2560)
at android.view.View.measure(View.java:17430)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2001)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1166)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1372)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1054)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5779)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
at android.view.Choreographer.doCallbacks(Choreographer.java:580)
at android.view.Choreographer.doFrame(Choreographer.java:550)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Fragman Java sınıfı
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (container == null) {
return null;
}
view = (RelativeLayout) inflater.inflate(R.layout.fragmentmenu_layout, container, false);
// Passing harcoded values for latitude & longitude. Please change as per your need. This is just used to drop a Marker on the Map
latitude = 26.78;
longitude = 72.56;
; // For setting up the MapFragment
return view;
}
/***** Sets up the map if it is possible to do so *****/
public static void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) SectionsPagerAdapter.fragmentManager
.findFragmentById(R.id.mapView)).getMap();
// Check if we were successful in obtaining the map.
if (mMap != null)
setUpMap();
}
}
/**
* This is where we can add markers or lines, add listeners or move the
* camera.
* <p>
* This should only be called once and when we are sure that {@link #mMap}
* is not null.
*/
private static void setUpMap() {
// For showing a move to my loction button
mMap.setMyLocationEnabled(true);
// For dropping a marker at a point on the Map
mMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longitude)).title("My Home").snippet("Home Address"));
// For zooming automatically to the Dropped PIN Location
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(latitude,
longitude), 12.0f));
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
// TODO Auto-generated method stub
if (mMap != null)
setUpMap();
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) MainActivity.fragmentManager
.findFragmentById(R.id.mapView)).getMap(); // getMap is deprecated
// Check if we were successful in obtaining the map.
if (mMap != null)
setUpMap();
getAllFeaturedItems();
captureMapScreen();
}
}
@Override
public void onStart() {
super.onStart();
}
@Override
public void onResume() {
super.onResume();
setUpMapIfNeeded();
}
@Override
public void onPause() {
super.onPause();
}
@Override
public void onStop() {
super.onStop();
}
@Override
public void onLowMemory() {
super.onLowMemory();
}
/**** The mapfragment's id must be removed from the FragmentManager
**** or else if the same it is passed on the next time then
**** app will crash ****/
@Override
public void onDestroyView() {
super.onDestroyView();
if (mMap != null) {
MainActivity.fragmentManager.beginTransaction()
.remove(MainActivity.fragmentManager.findFragmentById(R.id.mapView)).commit();
mMap = null;
}
}
@Override
public void onDestroy() {
super.onDestroy();
}
fragmentmenu_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:translationZ="5dp"
>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/listViewMenu"
android:layout_gravity="center_horizontal"
android:dividerHeight="1sp"
android:translationZ="5dp"
android:divider="@color/background_default"
android:background="@color/background_white"
android:clickable="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/screenShotMapView" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/screenShotMapView"
android:layout_alignParentTop="true"
android:maxWidth="50dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:adjustViewBounds="true"
android:translationZ="5dp"
/>
<fragment
class="com.google.android.gms.maps.MapFragment"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/mapView"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:adjustViewBounds="true"
android:longClickable="false"
android:visibility="visible"
android:maxHeight="50dp"
android:maxWidth="50dp"
/>
</RelativeLayout>
MainActivity.java
public static FragmentManager fragmentManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
// setTheme(R.style.ActionBarTheme);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// initialising the object of the FragmentManager. Here I'm passing getSupportFragmentManager(). You can pass getFragmentManager() if you are coding for Android 3.0 or above.
// final ActionBar actionBar = getSupportActionBar();
buildGoogleApiClient();
// actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
mImageBitmap = null;
// Create the adapter that will return a fragment for each section/page
mSectionsPagerAdapter = new SectionsPagerAdapter(
this.getBaseContext(), getSupportFragmentManager());
fragmentManager = getSupportFragmentManager();
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
// actionBar.setSelectedNavigationItem(position);
}
});
// For each of the sections in the app, add a tab to the action bar.
/*
for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
// Create a tab with text corresponding to the page title defined by
// the adapter. Also specify this Activity object, which implements
// the TabListener interface, as the callback (listener) for when
// this tab is selected.
if (i == 0) {
actionBar.addTab(
actionBar.newTab()
.setIcon(R.drawable.ic_action_view_as_list)
// .setText(mSectionsPagerAdapter.getPageTitle(i))
.setTabListener(this)
);
}
if (i == 1) {
actionBar.addTab(
actionBar.newTab()
.setIcon(R.drawable.ic_action_web_site_dark)
// .setText(mSectionsPagerAdapter.getPageTitle(i))
.setTabListener(this)
);
}
}
*/
mAlbumStorageDirFactory = new BaseAlbumDirFactory();
Intent intent = new Intent(this, SplashScreen.class);
startActivity(intent);
}
Aferin !!!Günümü şenlendirdin!!! – Cabezas