Android : Access Mapview Inside Fragment With ViewPager

Question

I am Using View Pager to Display three Views.

"Filter","Streets","Around"

Each View is Defined by Fragment.

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

WHAT I HAVE DONE :

I want to Use MapView Inside Filter Fragment but Could Not Able to Run Successfully. and Getting Log cate Error:

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

I have also Searched on Net and Stackoverflow about this Problem and Found the LINK and LINK but Could not able to Found this link Related to my Problem as i am using Fragment With ViewPager.

I have put my Code as 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 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>

Please Can anyone Suggest Me Answer to Solve My Problem. I have Spent many Hours on this. Still not getting any Idea about my Question. Thnks in Advance.

Answer 1

You can use LocalActivityManager to host a Activity inside a fragment. It is a deprecated class, but it offers the simplest solution.

Here is the code for a fragment (MyFilterFragment in your code). YourMapActivity is a basic activity 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 posted, Google has released Google Maps Android API with fragment support with an official MapFragment class.

Answer 2

To use Google Maps, you have to extend MapActivity, which you didn't do. Check out this example in the docs. In the spirit of maintainability, I wouldn't resort to solutions that use deprecated functionality.

A more solid solution is to extend MapActivity and copy the missing implementation from FragmentActivity. If you don't want or need backwards compatiblity with older Android versions, just use MapActivity rather than FragmentActivity, which should already include the functionality needed to show Fragments in Android 3.0 and later.

---

Edit: here's a project that did it for you.