I am using android studio and trying to bring in google maps. In my android manifest I have added these lines:
<uses-library android:name="com.google.android.maps" />/>
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="myKEY" />
And when I try and create a map in my xml I get the error:
Cannot resolve method maps
My xml I created looks like this:
<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"
tools:context=".MainActivity" >
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
</RelativeLayout>
The cannot resolve method maps is on this line:
class="com.google.android.gms.maps.MapFragment" />
Code:
package com.beerportfolio.beerportfoliopro;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.SearchView;
/**
* Created by Mike on 3/17/14.
*/
public class BreweryMap extends Fragment {
public BreweryMap(){}
String beerId = "";
SearchView searchView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_brewmap, container, false);
setHasOptionsMenu(true);
return rootView;
}
}
try to this instead:
class="com.google.android.gms.maps.SupportMapFragment"
and in the Fragment you can do this
public class MyFragment extends SupportMapFragment
this worked for me. Everything else seems to be correct. Maybe its your code but try to extend SupportMapFragment.
Related
Here is the class of fragment
package com.hfad.chapter7;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class WorkoutDetailFragment extends Fragment {
private long workoutID;
public WorkoutDetailFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_workout_detail, container, false);
}
public void setWorkoutID(long workoutID) {
this.workoutID = workoutID;
}
}
And the layout it's using is:
<FrameLayout 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"
tools:context="com.hfad.chapter7.WorkoutDetailFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/hello_blank_fragment" />
</FrameLayout>
My MainActivity is:
package com.hfad.chapter7;
import android.app.Activity;
import android.app.Fragment;
import android.provider.UserDictionary;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
WokoutDetailFragment workoutDetailFragment;
workoutDetailFragment = (WorkoutDetailFragment)this.getFragmentManager().findFragmentById(R.id.myFirstFragment);
}
}
And layout of MainActivity is:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.hfad.chapter7.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
/>
<fragment
class="com.hfad.chapter7.WorkoutDetailFragment"
android:id="#+id/myFirstFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
Problem is when I use this.getFragmentManager().findFragmentById(R.id.myFirstFragment) in onCreate of AppCompatActivity I get Fragment though I should get WorkoutDetailFragment as stated here in a similar example.
UPDATE:
Also I am unable to cast Fragment to WorkDetailFragment
#user4913383,
Change this line:
workoutDetailFragment = (WorkoutDetailFragment)this.getFragmentManager().findFragmentById(R.id.myFirstFragment);
to
workoutDetailFragment = (WorkoutDetailFragment)this.getSupportFragmentManager().findFragmentById(R.id.myFirstFragment);
What's the problem of getting a fragment? The getFragmentManager().findFragmentById() method returns a Fragment and you have to cast it. Since you are casting the Fragment to a WorkoutDetailFragment you should be able to do what you want with it.
I think it has to be <fragment android:name="com.hfad.chapter7.WorkoutDetailFragment"... instead of class.
=> http://developer.android.com/training/basics/fragments/creating.html#AddInLayout
I am hardly trying to create a simple application with a top menu and a changeable view below (by pressing the buttons in the menu fragment we change the view of the fragment below).
So, I have 2 fragments inside the main view but when trying to run the application in the emulator I get an error like:
Cause by android.app (bla bla bla, piece of crap Eclipse doesn't even allow copying the errors):
Trying to instantiate a class com.example.android.topmenu that is not a fragment
So, these are my XML layouts:
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<fragment
android:id="#+id/menuFragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:name="com.example.android.topmenu" >
</fragment>
<fragment
android:id="#+id/contentFragment"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:name="com.example.android.bottomcontent" >
</fragment>
</LinearLayout>
topmenu.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<Button
android:id="#+id/Button1"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
</LinearLayout>
bottom_content.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:orientation="vertical">
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#+string/content_text" />
</LinearLayout>
and these are the classes for the main activity and the fragments
main_activity
package com.example.android;
import com.example.android.R;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
public class OLife extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
// The activity is being created
super.onCreate(savedInstanceState);
// Set view
setContentView(R.layout.main);
}
#Override
protected void onDestroy() {
super.onDestroy();
// The activity is about to be destroyed.
super.onDestroy();
// Stop method tracing that the activity started during onCreate()
android.os.Debug.stopMethodTracing();
}
}
topmenu
package com.example.android;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class OLifeMenu extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.topmenu, container, false);
return view;
}
}
bottomcontent
package com.example.android;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class OLifeMain extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.bottom_content, container, false);
return view;
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
}
You should be using FragmentActivity instead of Activity that is because you are using support Fragments and multiple Fragments in your activity main
Edit
You can now use the Appcompat support library and extends AppCompatActivity to support toolbar and fragment for lower api.
In my case it turned out, I was doing stuff in onCreate in the wrong order:
setContentView(R.layout.activity_qr_code_scan);
super.onCreate(savedInstanceState);
instead of
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_qr_code_scan);
As you are using fragments in your layout and I suggest you to extend your class from fragment or fragment activity.
I created a basic project using Intellij 13 and android sdk 19 then I add support-library v4.jar to my project.
this is my main activity :
package com.example.testfg2;
import android.app.Activity;
import android.os.Bundle;
public class MyActivity extends Activity {
/**
* Called when the activity is first created.
*/
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
this is "main.xml" layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Hello World, MyActivity"
/>
<fragment android:layout_width="wrap_content" android:layout_height="wrap_content"
name="com.example.testfg2.frg1"
/>
</LinearLayout>
this is my simple fragment class "frg1.java"
package com.example.testfg2;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class frg1 extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.frg_layout, container, false);
}
}
and here is the layout "frg_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="match_parent">
</LinearLayout>
my emulator is a 2.3.3.
when I try to run this app I will get following error :
Caused by: android.view.InflateException: Binary XML file line #12:
Error inflating class fragment
What do I exactly missed? is there anything extra I should do to make the app working with intellij 13.0 ?
Your class should extend FragmentActivity
public class MyActivity extends FragmentActivity {
http://developer.android.com/reference/android/support/v4/app/FragmentActivity.html
Base class for activities that want to use the support-based Fragment.
Using fragments for the first time. As fragment in itself an activity, going by the documentation, I think I've written it correctly in the manifest.xml.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/example_fragment"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment class="com.test.methods.ExampleFragment"
android:id="#+id/list"
android:layout_weight="1"
android:layout_width="0px"
android:layout_height="match_parent" />
<FrameLayout android:id="#+id/details" android:layout_weight="1"
android:layout_width="0px"
android:layout_height="match_parent" />
</LinearLayout>
My fragment:
package com.test.methods;
import android.support.v4.app.Fragment;
import android.support.v4.app.ListFragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import com.crumbin.main.R;
public class ExampleFragment extends ListFragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
setListAdapter(new ArrayAdapter<String>(getActivity(),
R.id.list,
Shakespeare.TITLES));
return inflater.inflate(R.layout.example_fragment, container, false);
}
}
My Activity:
package com.test.methods;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
public class DemoUserActivity extends FragmentActivity{
protected void OnCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
if (savedInstanceState == null)
{
ExampleFragment details = new ExampleFragment();
details.setArguments(getIntent().getExtras());
getSupportFragmentManager().beginTransaction().add(
android.R.id.content,details).commit();
}
}
}
My intent:
intent = new Intent().setClass(this, DemoUserActivity.class);
spec = tabHost.newTabSpec("list").setIndicator("FragmentTest",
res.getDrawable(R.drawable.icon_list_tab))
.setContent(intent);
tabHost.addTab(spec);
I get no output out of this. I tried debugging but it is not even reaching my activity file.
No Activity is different thing, and Fragment is different, you can use these to create your application moduler, and replace one with another with minimum efforts, but can not use as a replacement of other, if You want to use a fragment, you need to declare an activity, in that activity you need to add your fragment, individual fragment without Activity can not be used.
I'm trying to get my head around fragments in order to have my apps prepped for ICS.
I have the following files to just get the most basic fragment app you can have. It should have this when launched: One Fragment Layout with a text view "Fragment 1" and next to it another Fragment Layout with "Fragment2".
My package name is com.mwerner.fragments
My files are:
FragmentsActivity.java
ExamplesFragment.java
ExamplesFragment2.java
examples_fragment.xml
examples_fragment2.xml
main.xml
The code for FragmentsActivity.java is:
package com.mwerner.fragments;
import android.app.Activity;
import android.os.Bundle;
public class FragmentsActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
ExamplesFragment.java
package com.mwerner.fragments;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class ExamplesFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.examples_fragment, container, false);
}
}
ExamplesFragment2.java
package com.mwerner.fragments;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class ExamplesFragment2 extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.examples_fragment2, container, false);
}
}
The examples_fragment.xml files just have a linear layout with a textview in it...
Here is the code for the main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<fragment
class="com.mwerner.fragments$ExamplesFragment"
android:id="#+id/list"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="fill_parent"
/>
<fragment
class="com.mwerner.fragments$ExamplesFragment2"
android:id="#+id/viewer"
android:layout_weight="2"
android:layout_width="0dp"
android:layout_height="fill_parent" />
</LinearLayout>
The app crashes on startup with the error
11-07 18:12:12.519: E/AndroidRuntime(696): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mwerner.fragments/com.mwerner.fragments.FragmentsActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
Can you please tell me what is wrong here? I pretty much copied / pasted the code from the google developers page for fragments.
You defined the path to your fragments incorrectly in your layout xml. Correct the class attributes. Try this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<fragment
class="com.mwerner.fragments.ExamplesFragment"
android:id="#+id/list"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="fill_parent"
/>
<fragment
class="com.mwerner.fragments.ExamplesFragment2"
android:id="#+id/viewer"
android:layout_weight="2"
android:layout_width="0dp"
android:layout_height="fill_parent" />
</LinearLayout>
Try extending FragmentActivity
public class FragmentsActivity extends FragmentActivity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
When I was writing my first program on Fragments using I incurred same error. Instead of extending "Activity" extend "FragmentActivity" in your launcher activity.