如何使用导航抽屉避免Android中的碎片重叠

Question

i am creating a application in which i am using preference Fragment with navigation Drawer my problem is i am created navigation Drawer and in which i am added some menu item in which i want to load the preference Fragment as a first element when the app loads.it is does as i don to display. when i am changing the options Ie.when i am changing the drawer menu options like second element the in the drawer menu fist view is not replacing with the second,it is overlapping an the first

my navigation drawer xml is as follow

<android.support.v4.widget.DrawerLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.koteswara.wise.NavigationDrawerMainActivity" >

  <FrameLayout
        android:id="@+id/container"

        android:layout_width="match_parent"
        android:layout_height="match_parent" />
<LinearLayout 
        android:id="@+id/drawer"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:orientation="vertical" 
        android:layout_gravity="start" >
 <ListView 
     android:id="@+id/drawer_list"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/white"
    android:choiceMode="singleChoice"
    android:divider="@android:color/transparent"
    android:dividerHeight="0dp"
    tools:context="com.koteswara.wise.NavigationDrawerFragment" />
 </LinearLayout>

</android.support.v4.widget.DrawerLayout>

my preference fragment is like this

public class AutoAnswerPreferenceActivity extends PreferenceFragment implements OnSharedPreferenceChangeListener { 
    private AutoAnswerNotifier mNotifier;
    @Override
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.preference);
        mNotifier = new AutoAnswerNotifier(getActivity()); 
        mNotifier.updateNotification();
        SharedPreferences sharedPreferences = getPreferenceManager().getSharedPreferences();
        sharedPreferences.registerOnSharedPreferenceChangeListener(this);


        }

    @Override
    public void onDestroy() { 
        getPreferenceManager().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
        super.onDestroy();
        }
    @Override 
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { 
        if (key.equals("enabled")) { 
            mNotifier.updateNotification();
            }  
        } 

    } 

my fragment class which is adding to load the PreferenceFragment is

public class AutoAnswarFragment extends Fragment {

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
         getActivity().getFragmentManager().beginTransaction().replace(R.id.container, new AutoAnswerPreferenceActivity()) .commit();


    }

the navigation Drawer class in which show fragment method is

protected void showFragment(int position) {
        // TODO Auto-generated method stub
        Fragment fragment = null;

        switch (position) {
        case 0:
            fragment = new  AutoAnswarFragment();
            break;
        case 1:
             fragment = new Tab2();
            break;
        case 2:
            // fragment = new BhajanaFragment();
            break;
        }
        if (fragment != null) {
            FragmentManager fragmentManager = getSupportFragmentManager();
            fragmentManager.beginTransaction()
                    .replace(R.id.container, fragment).commit();

            // update selected item and title, then close the drawer
            // mDrawerList.setItemChecked(position, true);
            // mDrawerList.setSelection(position);
            mTitle = mDrawer_title[position];
            // mDrawerLayout.closeDrawer(mDrawerList);
        } else {
            // error in creating fragment
            // Log.e("MainActivity", "Error in creating fragment");
        }
    }


}

if i will call the fragment other than the preference Fragment like below it will works please help me

public class Tab1 extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View v =inflater.inflate(R.layout.tab_1,container,false);
        return v;
    }
} 

i am struggling to clear the solution for it please any body solve it and please tell me the solution .i will be the thank full please help me

Answer 1

Be sure the root layout of all your fragments are having

android:background="@color/your_favorite_color"

In that way they will be hiding other fragments below.

Answer 2

on so many days of research and searching on the web i have found a solution its working fine for me for the above problem there is a link on the web as http://www.michenux.net/android-preferencefragmentcompat-906.html in this i found a sample apk and a source code regarding the apk . as this apk has a functionality as it solves my problem . i cleared the errors of the source code which will comes when you import and after that i added the library to my project. I used the PreferenceCompatFragment rather than PreferenceFragmentCompat, it solved my problem if anybody needs help it may help them also so that i am posting my solution to the above problem. and i thank who are all helped me who and all given some valuable suggestion for the above problem. The below class below i have used instead of PreferenceFragmentCompat of v7 support library

public abstract class PreferenceCompatFragment extends Fragment {

    private static final int FIRST_REQUEST_CODE = 100;
    private static final int MSG_BIND_PREFERENCES = 1;
    private static final String PREFERENCES_TAG = "android:preferences";
    private boolean mHavePrefs;
    private boolean mInitDone;
    private ListView mList;
    private PreferenceManager mPreferenceManager;

    private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {

                case MSG_BIND_PREFERENCES:
                    bindPreferences();
                    break;
            }
        }
    };

    final private Runnable mRequestFocus = new Runnable() {
        public void run() {
            mList.focusableViewAvailable(mList);
        }
    };

    private void bindPreferences() {
        PreferenceScreen localPreferenceScreen = getPreferenceScreen();
        if (localPreferenceScreen != null) {
            ListView localListView = getListView();
            localPreferenceScreen.bind(localListView);
        }
    }

    private void ensureList() {
        if (mList == null) {
            View view = getView();
            if (view == null) {
                throw new IllegalStateException("Content view not yet created");
            }

            View listView = view.findViewById(android.R.id.list);
            if (!(listView instanceof ListView)) {
                throw new RuntimeException("Content has view with id attribute 'android.R.id.list' that is not a ListView class");
            }

            mList = (ListView)listView;
            if (mList == null) {
                throw new RuntimeException("Your content must have a ListView whose id attribute is 'android.R.id.list'");
            }

            mHandler.post(mRequestFocus);
        }
    }

    private void postBindPreferences() {
        if (mHandler.hasMessages(MSG_BIND_PREFERENCES)) {
            mHandler.obtainMessage(MSG_BIND_PREFERENCES).sendToTarget();
        }
    }

    private void requirePreferenceManager() {
        if (this.mPreferenceManager == null) {
            throw new RuntimeException("This should be called after super.onCreate.");
        }
    }

    public void addPreferencesFromIntent(Intent intent) {
        requirePreferenceManager();
        PreferenceScreen screen = inflateFromIntent(intent, getPreferenceScreen());
        setPreferenceScreen(screen);
    }

    public void addPreferencesFromResource(int resId) {
        requirePreferenceManager();
        PreferenceScreen screen = inflateFromResource(getActivity(), resId, getPreferenceScreen());
        setPreferenceScreen(screen);
    }

    public Preference findPreference(CharSequence key) {
        if (mPreferenceManager == null) {
            return null;
        }
        return mPreferenceManager.findPreference(key);
    }

    public ListView getListView() {
        ensureList();
        return mList;
    }

    public PreferenceManager getPreferenceManager() {
        return mPreferenceManager;
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        getListView().setScrollBarStyle(0);
        if (mHavePrefs) {
            bindPreferences();
        }
        mInitDone = true;
        if (savedInstanceState != null) {
            Bundle localBundle = savedInstanceState.getBundle(PREFERENCES_TAG);
            if (localBundle != null) {
                PreferenceScreen screen = getPreferenceScreen();
                if (screen != null) {
                    screen.restoreHierarchyState(localBundle);
                }
            }
        }
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        dispatchActivityResult(requestCode, resultCode, data);
    }

    @Override
    public void onCreate(Bundle paramBundle) {
        super.onCreate(paramBundle);
        mPreferenceManager = createPreferenceManager();
    }

    @Override
    public View onCreateView(LayoutInflater paramLayoutInflater, ViewGroup paramViewGroup, Bundle paramBundle) {
        return paramLayoutInflater.inflate(R.layout.preference_list_content, paramViewGroup, false);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        dispatchActivityDestroy();
    }

    @Override
    public void onDestroyView() {
        mList = null;
        mHandler.removeCallbacks(mRequestFocus);
        mHandler.removeMessages(MSG_BIND_PREFERENCES);
        super.onDestroyView();
    }

    @Override
    public void onSaveInstanceState(Bundle bundle) {
        super.onSaveInstanceState(bundle);
        PreferenceScreen screen = getPreferenceScreen();
        if (screen != null) {
            Bundle localBundle = new Bundle();
            screen.saveHierarchyState(localBundle);
            bundle.putBundle(PREFERENCES_TAG, localBundle);
        }
    }

    @Override
    public void onStop() {
        super.onStop();
        dispatchActivityStop();
    }

    /** Access methods with visibility private **/

    private PreferenceManager createPreferenceManager() {
        try {
            Constructor<PreferenceManager> c = PreferenceManager.class.getDeclaredConstructor(Activity.class, int.class);
            c.setAccessible(true);
            return c.newInstance(this.getActivity(), FIRST_REQUEST_CODE);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    private PreferenceScreen getPreferenceScreen() {
        try {
            Method m = PreferenceManager.class.getDeclaredMethod("getPreferenceScreen");
            m.setAccessible(true);
            return (PreferenceScreen) m.invoke(mPreferenceManager);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    private void setPreferenceScreen(PreferenceScreen preferenceScreen) {
        try {
            Method m = PreferenceManager.class.getDeclaredMethod("setPreferences", PreferenceScreen.class);
            m.setAccessible(true);
            boolean result = (Boolean) m.invoke(mPreferenceManager, preferenceScreen);
            if (result && preferenceScreen != null) {
                mHavePrefs = true;
                if (mInitDone) {
                    postBindPreferences();
                }
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    private void dispatchActivityResult(int requestCode, int resultCode, Intent data) {
        try {
            Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityResult", int.class, int.class, Intent.class);
            m.setAccessible(true);
            m.invoke(mPreferenceManager, requestCode, resultCode, data);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    private void dispatchActivityDestroy() {
        try {
            Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityDestroy");
            m.setAccessible(true);
            m.invoke(mPreferenceManager);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    private void dispatchActivityStop() {
        try {
            Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityStop");
            m.setAccessible(true);
            m.invoke(mPreferenceManager);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }


    private void setFragment(PreferenceFragment preferenceFragment) {
        try {
            Method m = PreferenceManager.class.getDeclaredMethod("setFragment", PreferenceFragment.class);
            m.setAccessible(true);
            m.invoke(mPreferenceManager, preferenceFragment);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public PreferenceScreen inflateFromResource(Context context, int resId, PreferenceScreen rootPreferences) {
        PreferenceScreen preferenceScreen ;
        try {
            Method m = PreferenceManager.class.getDeclaredMethod("inflateFromResource", Context.class, int.class, PreferenceScreen.class);
            m.setAccessible(true);
            preferenceScreen = (PreferenceScreen) m.invoke(mPreferenceManager, context, resId, rootPreferences);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return preferenceScreen;
    }

    public PreferenceScreen inflateFromIntent(Intent queryIntent, PreferenceScreen rootPreferences) {
        PreferenceScreen preferenceScreen ;
        try {
            Method m = PreferenceManager.class.getDeclaredMethod("inflateFromIntent", Intent.class, PreferenceScreen.class);
            m.setAccessible(true);
            preferenceScreen = (PreferenceScreen) m.invoke(mPreferenceManager, queryIntent, rootPreferences);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return preferenceScreen;
    }
}