Button inside MapView is not visible - java

I have a problem with button's visibility inside MapView.
Layout:
<com.google.android.gms.maps.MapView
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="UPDATE DATA"
android:layout_gravity="center_horizontal"
android:id="#+id/updateMarkers"/>
</com.google.android.gms.maps.MapView>
When I initialize button (updateDataButton) like below
(after initializing mapView) I got NullPointerException - button is null.
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState){
View view = inflater.inflate(R.layout.graph_fragment, container, false);
try {
MapsInitializer.initialize(getActivity().getApplicationContext());
} catch (Exception e) {
e.printStackTrace();
}
mapView = (MapView) view.findViewById(R.id.map);
mapView.onCreate(savedInstanceState);
mapView.onResume();
updateDataButton = (Button) view.findViewById(R.id.updateMarkers);
updateDataButton.setVisibility(View.VISIBLE);
googleApiClient = new GoogleApiClient.Builder(getContext())
.enableAutoManage(getActivity(), this)
.addConnectionCallbacks(this)
.addApi(LocationServices.API)
.addApi(Places.GEO_DATA_API)
.addApi(Places.PLACE_DETECTION_API)
.build();
googleApiClient.connect();
return view;
}
but when I initialize button before initializing mapView everythings seems to be ok, but button is not displaying.
Do you have any idea about how to properly display button in my case?

Have you try this way:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.ad3luc.maps.AMain"
tools:showIn="#layout/activity_main">
<com.google.android.gms.maps.MapView
android:id="#+id/map_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
<Button
android:id="#+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentStart="true"
android:text="Button"/>
</RelativeLayout>
Use a RelativeLayout and inside the layout put the MapView and a Button widget.
I have not an api key for use the maps but the Button display over the MapView widget without problem.

Related

GestureDetector + ItemClick RecyclerView does not work together

I have looked for several times, but I think no one is facing the same issue that I'm facing right now. I have the following fragment:
FRAGMENT XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/id"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="8dp"
android:paddingEnd="16dp"
android:paddingStart="16dp"
android:paddingTop="8dp"
android:clickable="true"
android:focusable="true"
android:focusableInTouchMode="true">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerview_id"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical" />
</RelativeLayout>
RecyclerView XML
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/ll_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/icon"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textAlignment="center"
/>
</LinearLayout>
FRAGMENT JAVA CODE SNIPPET
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, Bundle savedInstanceState) {
View viewRoot = inflater.inflate(R.layout.fragment_xml, container, false);
recyclerView = (RecyclerView) viewRoot.findViewById(R.id.recyclerview_id);
recyclerView.setOnTouchListener(new OnSwipeTouchListener(getActivity()) {
#Override
public void onSwipeRight() {
FragmentTransaction ft = getActivity().getSupportFragmentManager().beginTransaction();
ft.setCustomAnimations(R.anim.enter_from_left, R.anim.exit_to_right, R.anim.enter_from_right, R.anim.exit_to_left);
ft.replace(R.id.frameLayout, new Fragment2()).commit();
}
});
So, what I'm doing on the code above is adding a touch listener, so when the user swipe from right to left, the fragment goes to the other fragment (Fragment2)
This works perfectly fine! However... I need to add onClickListener inside my recyclerAdapter, so I can catch the click listener of each item. And here comes the problem... When adding a click listener, the swipe listener does not work. It seems that the listener of the click "overrides" my listener of the swipe. The question is. How to add both on the recyclerview, and make them work together?

Center App Bar title on Android

I'm trying to create my own custom app bar with a center-aligned title. Android Studio's editor shows my title is properly centered, but it is not on my actual device.
MainActivity.java
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar myToolbar = (Toolbar) findViewById(R.id.encounter_toolbar);
setSupportActionBar(myToolbar);
getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
getSupportActionBar().setCustomView(R.layout.encounter_menu_bar_layout);
}
encounter_menu_bar_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize">
<TextView
android:id="#+id/encounter_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/untitled"
android:textSize="20sp"
android:textColor="#color/titleTextColor"
android:textStyle="bold"
android:layout_gravity="center" />
</LinearLayout>
encounter_menu_bar.xml doesn't have anything in it:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
</menu>
EDIT
A lot of you are recommending that I change android:layout_gravity to android:gravity. I've tried that as well and I'm still not getting it to line up properly.
I'm enabling the app bar to show up on a specific fragment, as shown here:
EncounterFragment.java
public class EncounterFragment extends Fragment {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
setHasOptionsMenu(true);
return inflater.inflate(R.layout.fragment_encounter, container, false);
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
menuInflater.inflate(R.menu.encounter_menu_bar, menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO: This
return super.onOptionsItemSelected(item);
}
}
I also forgot to mention that I'm attaching the menu in a fragment. This is its layout:
fragment_encounter.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="#+id/encounter_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="4dp"
android:theme="#style/ThemeOverlay.AppCompat.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"/>
</LinearLayout>
Try adding android:gravity="center".
This happens because you have to center the whole text and not just the layout
Use android:layout_gravity="center"
Example:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<Button
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
NOTE: layout_gravity, not gravity
In your case:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize">
<TextView
android:id="#+id/encounter_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/untitled"
android:textSize="20sp"
android:textColor="#color/titleTextColor"
android:textStyle="bold"
android:layout_gravity="center" />
</LinearLayout>
Change the textview to this
make it match parent for width, And make gravity center to center the text
<TextView
android:id="#+id/encounter_name"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="#string/untitled"
android:textSize="20sp"
android:textColor="#color/titleTextColor"
android:textStyle="bold"
android:gravity="center" />
You want to change your xml view to this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
#this should be horizontal, not vertical.
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize">
<TextView
android:id="#+id/encounter_name"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="#string/untitled"
android:textSize="20sp"
android:textColor="#color/titleTextColor"
android:textStyle="bold"
/>
To start, you need to make your linear layout horizontal, not vertical. By making it vertical, you are aligning it to the left.
Then, you need to make sure that your textview width and height match the parent, rather than just wrap the content. Then you can use the gravity attribute to make sure that the text is centered. When you used gravity before, the textview simply wrapped the content, and thus it didn't center in the textview. By matching the parent view bounds, you will be able to then center the text as you need to.
This is how your Toolbar XML should be
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:minHeight="?attr/actionBarSize"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:titleTextColor="#android:color/white"
android:background="?attr/colorPrimary">
<TextView
android:id="#+id/toolbar_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Toolbar Title"
android:textColor="#android:color/white"
style="#style/TextAppearance.AppCompat.Widget.ActionBar.Title"
android:layout_gravity="center"
/>
</android.support.v7.widget.Toolbar>
Then in your Activity
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
TextView mTitle = (TextView) toolbar.findViewById(R.id.toolbar_title);

Android Fullscreen Fragment Dialog Background Clickable

I have fullscreen fragment dialog. While it is showing, background objects can be clickable or interact with user. how do i avoid this?
Here is piece of code how i show dialog:
MainActivity.java
FullScreenFrDialog fr = new FullScreenFrDialog();
FragmentTransaction tr = getSupportFragmentManager().beginTransaction();
tr.add(android.R.id.content, fr, FR_TAG).commit();
FullScreenFrDialog.java
public class FullScreenFrDialog extends DialogFragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.dialog, container, false);
return view;
}
}
dialog.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#CCFFFFFF" >
<ImageView
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
</FrameLayout>
main_activity.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hello_world" />
</RelativeLayout>
This button clickable, while dialog is showing.
Thanks in advance.
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
android:background="#CCFFFFFF" >
Make the parents clickable true, hope this will help you.
In your onCreate() simply call setCancelable(false). This will prevent the dialog from closing if tapped outside the dialog and will also prevent tap events to the elements beneath
EDIT
Alternatively you can call setCanceledOnTouchOutside(false) if you want it to be dismissed with a back button press but still prevent touches to elements beneath

How to set OnClickListener for ScrollView?

i'm developing an android project which it has a viewpager. i wrote an adapter for my viewpager and my adapter consist of s scrollview and some views inside that.
i want when user click on the scrollview, something happen (i wrote this part too and test it and it works).
i implement onClickListener for my scrollview but it's not triggered when user click on that.
i have already read this but it's not work for me.
my code for onClickListener is here
rootView = inflater.inflate(R.layout.level_selector_list_view_adapter, container, false);
ScrollView scroll = (ScrollView) rootView.findViewById(R.id.level_selector_view_scroll_view);
scroll.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View arg0)
{
Log.e(MainActivity.WATERMELON_TAG, "Click!!!");
}
});
and my layout code is this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="#dimen/level_selector_values_main_page_view_pager_width"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ScrollView
android:id="#+id/level_selector_view_scroll_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
tools:ignore="UselessParent" >
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="false"
tools:ignore="UselessParent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:clickable="false"
android:orientation="vertical" >
<ImageView
android:id="#+id/level_selector_view_pager_adapter_level_logo"
android:layout_width="#dimen/level_selector_values_view_pager_adapter_level_logo_width"
android:layout_height="#dimen/level_selector_values_view_pager_adapter_level_logo_height"
android:layout_gravity="center_horizontal"
android:layout_marginTop="#dimen/level_selector_values_view_pager_adapter_level_logo_top_margin"
android:clickable="false"
android:scaleType="fitXY"
tools:ignore="ContentDescription" />
<TextView
android:id="#+id/level_selector_view_pager_adapter_level_name"
android:layout_width="#dimen/level_selector_values_view_pager_adapter_level_name_width"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="#dimen/level_selector_values_view_pager_adapter_level_name_top_margin"
android:clickable="false"
android:gravity="center"
android:textColor="#color/level_selector_values_level_name_font_color"
android:textSize="#dimen/level_selector_values_level_name_font_size" />
<TextView
android:id="#+id/level_selector_view_pager_adapter_level_score"
android:layout_width="#dimen/level_selector_values_view_pager_adapter_level_score_width"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="#dimen/level_selector_values_view_pager_adapter_level_score_top_margin"
android:clickable="false"
android:gravity="center"
android:textColor="#color/level_selector_values_level_name_font_color"
android:textSize="#dimen/level_selector_values_font_size" />
</LinearLayout>
<ImageView
android:id="#+id/level_selector_view_pager_adapter_lock"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:alpha="0.75"
android:clickable="false"
android:scaleType="fitXY"
android:src="#drawable/lock"
tools:ignore="ContentDescription" />
</FrameLayout>
</ScrollView>
The child Views of your ScrollView are consuming the click events you do on the ScrollView.
The solution to this problem is to set the onClickLIstener to the immediate child of the ScrollView, the FrameLayout in your case.
Don't forget to set the layout to "clickable".
Furthermore, I recommend not to use the FrameLayout at all, since it is just a useless container. Instead, just let the LinearLayout that is currently the child of the FrameLayout be the next child to the ScrollView.
try:
public class ClassName implements OnClickListener {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_child, container, false);
ScrollView scrollView= (ScrollView) root.findViewById(R.id.my_ScrollView);
scrollView.setOnClickListener(this);
return root;
}
#Override
public void onClick(View v) {
Log.e(MainActivity.WATERMELON_TAG, "Click!!!");
}
}

How to add custom controls to MapFragment in Google Maps Android API v2?

I have SupportMapFragment and I need to add custom controls into it for changing a map type. Calling getView(), I get NoSaveStateFramelayout and I don't think it is a good idea to add it directly into it or its children.
What is the best way how can I can add a button over my map for changing the map type?
I have decided to override onCreateView and encapsulate the map in the code.
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup viewGroup, Bundle bundle) {
View mapView = super.onCreateView(inflater, viewGroup, bundle);
RelativeLayout view = new RelativeLayout(getActivity());
view.addView(mapView, new RelativeLayout.LayoutParams(-1, -1));
// working with view
return view;
}
And it works as I needed.
Try to put your map inside of a Frame Layout with Relative layout together when the map and the relative layout match_parent for the width and the height. In the relative layout place all your desired extended controls. That way the will sit on top on the map.
some thing like that:
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/title_gray_background" >
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:paddingLeft="10dp"
android:text="#string/tasks"
android:paddingRight="3dp"
android:textStyle="bold"
android:textSize="18sp"
android:textColor="#color/my_even_darker_gray" />
<Button
android:id="#+id/bLocateMe"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_centerVertical="true"
android:layout_marginRight="3dp"
android:background="#drawable/locate_me_button_selector"
android:clickable="true"
android:onClick="locateMeButtonOnClick"
android:text="#string/locate_me"
android:textColor="#color/my_white" />
</RelativeLayout>
<fragment
xmlns:map="http://schemas.android.com/apk/res-auto"
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
The view returned from onCreateView of MapFragment is a FrameLayout. So let use it, no need to add another layout (we will reduce view hierarchy).
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup viewGroup, Bundle bundle) {
FrameLayout mapView = (FrameLayout) super.onCreateView(inflater, viewGroup, bundle);
mapView.add(someView);
return view;
}
Use this code to add you layout above of the map
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View mapView = super.onCreateView(inflater, container, savedInstanceState);
#SuppressLint("InflateParams")
FrameLayout view = (FrameLayout) inflater.inflate(R.layout.fragment_map, null);
view.addView(mapView, 0, new RelativeLayout.LayoutParams(-1, -1));
return view;
}
I did the following:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<!--suppress AndroidDomInspection -->
<fragment
android:id="#+id/map"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
/>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
>
<ImageButton
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginRight="10sp"
android:layout_marginTop="10sp"
android:src="#android:drawable/ic_menu_mylocation"
/>
</RelativeLayout>

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