Android: accessing the internal Mapview snippet using ViewPager

Question

I use View Pager to display three views.

"Filter","Streets","Around" 

Each species is identified by a fragment.

WHAT I WANT: I want to use Mapview Inside My FilterFragment.

WHAT I'VE DONE:

I want to use the MapView Inside filter fragment, but could not successfully execute it. and Error receiving log:

android.view.InflateException: Binary XML file line #33: Error inflating class com.google.android.maps.MapView

I also searched Net and Stackoverflow about this problem and found LINK and LINK , but I could not find the link related to my problem, because I am using a snippet with ViewPager.

I put my code below.

Here is my code for MainViewPager.java:

  package com.example.viewpageractivitydemo; import com.example.viewpageractivitydemo.viewpager.TitlePageIndicator; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.support.v4.view.ViewPager; import android.util.Log; public class MainViewPager extends FragmentActivity { TestFragmentAdapter adapter; ViewPager pager; @Override protected void onCreate(Bundle arg0) { // TODO Auto-generated method stub super.onCreate(arg0); Log.i("MainViewPager","Inside Oncreate"); setContentView(R.layout.mainviewpager); pager = (ViewPager) findViewById(R.id.pager); adapter = new TestTitleFragmentAdapter(getSupportFragmentManager()); pager.setAdapter(adapter); TitlePageIndicator indicator = (TitlePageIndicator) findViewById(R.id.indicator); indicator.setViewPager(pager); pager.setCurrentItem(1); } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); // pager.setCurrentItem(1); } } 

Here is the code for TestFragmentAdapter.java

 package com.example.viewpageractivitydemo; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.util.Log; public class TestFragmentAdapter extends FragmentPagerAdapter { protected static final String[] CONTENT = new String[] { "Filter", "Streets", "Around" }; public String TAG = "TestFragmentAdapter"; private int mCount = CONTENT.length; public TestFragmentAdapter(FragmentManager fm) { super(fm); // TODO Auto-generated constructor stub } @Override public Fragment getItem(int position) { // TODO Auto-generated method stub Log.i(TAG, "Inside getItemMethod with position " + position); if (position == 0) { Log.i("TestFragmentAdapter","Inside if Condition"); return FilterFragment.newInstance(position); } else if (position == 1) { return StreetsFragment.newInstance(position); } else if (position == 2) { return AroundFragment.newInstance(position); } else { return null; } // return MainFragment.newInstance(CONTENT[position % CONTENT.length]); } @Override public int getCount() { // TODO Auto-generated method stub return mCount; } public void setCount(int count) { if (count > 0 && count <= 10) { mCount = count; notifyDataSetChanged(); } } } 

Here is my code for FilterFragment.java:

 package com.example.viewpageractivitydemo; import android.os.Bundle; import android.support.v4.app.Fragment; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class FilterFragment extends Fragment { /* * @Override protected Class<? extends Activity> getActivityClass() { // * TODO Auto-generated method stub return MyFilterActivity.class; } */ public static Fragment newInstance(int position) { Log.i("FilterFragment","Inside New Instasnce"); FilterFragment filterFragment = new FilterFragment(); return filterFragment; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // TODO Auto-generated method stub Log.i("FilterFragment","Inside OcCreateView"); View view = inflater.inflate(R.layout.filter, null); return view; } } 

Here is my code for filter.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:background="#C6CDD4" android:gravity="center" android:orientation="vertical" > <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#93A4BA" android:gravity="center" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_margin="5dp" android:gravity="center" android:text="Where Am I" android:textColor="#ffffff" android:textSize="18dp" android:textStyle="bold" > </TextView> </LinearLayout> <com.google.android.maps.MapView android:id="@+id/whereami_mapview" android:layout_width="fill_parent" android:layout_height="fill_parent" android:apiKey="0-PaH6rk7RKrZSMd_lqdrZi6FazYyIlX5r6YFyA" android:clickable="true" /> <!-- <com.google.android.maps.MapView android:id="@+id/whereami_mapview" android:layout_width="fill_parent" android:layout_height="fill_parent" android:apiKey="0-PaH6rk7RKrZSMd_lqdrZi6FazYyIlX5r6YFyA" /> --> </LinearLayout> </LinearLayout> 

Can anyone suggest me an answer to a solution to my problem. I spent many hours on this. Still not getting any idea about my Question. Thnks in Advance.

Answer 1

You can use LocalActivityManager to place an Activity inside a fragment. This is an obsolete class, but it offers the simplest solution.

Here is the snippet code ( MyFilterFragment in your code). YourMapActivity is the main operation that extends MapActivity .

 public class MapFragment extends Fragment { private static final String KEY_STATE_BUNDLE = "localActivityManagerState"; private LocalActivityManager mLocalActivityManager; protected LocalActivityManager getLocalActivityManager() { return mLocalActivityManager; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Bundle state = null; if (savedInstanceState != null) { state = savedInstanceState.getBundle(KEY_STATE_BUNDLE); } mLocalActivityManager = new LocalActivityManager(getActivity(), true); mLocalActivityManager.dispatchCreate(state); } public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { //This is where you specify you activity class Intent i = new Intent(getActivity(), YourMapActivity.class); Window w = mLocalActivityManager.startActivity("tag", i); View currentView=w.getDecorView(); currentView.setVisibility(View.VISIBLE); currentView.setFocusableInTouchMode(true); ((ViewGroup) currentView).setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS); return currentView; } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putBundle(KEY_STATE_BUNDLE, mLocalActivityManager.saveInstanceState()); } @Override public void onResume() { super.onResume(); mLocalActivityManager.dispatchResume(); } @Override public void onPause() { super.onPause(); mLocalActivityManager.dispatchPause(getActivity().isFinishing()); } @Override public void onStop() { super.onStop(); mLocalActivityManager.dispatchStop(); } @Override public void onDestroy() { super.onDestroy(); mLocalActivityManager.dispatchDestroy(getActivity().isFinishing()); } } 

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Edit:. Since this answer was published, Google released the Google Maps Android API with fragment support with the official MapFragment class.

Answer 2

To use Google Maps, you must expand MapActivity , which you did not do. See this example in the docs. In the spirit of maintainability, I would not resort to solutions that use outdated functionality.

A MapActivity solution is to extend MapActivity and copy the missing implementation from FragmentActivity . If you don’t want or need backward compatibility with older versions of Android, just use MapActivity rather than FragmentActivity , which should already include the features needed to display Fragment in Android 3.0 and later.

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Edit: here is the project that did this for you .