Question

我正在创建一个应用程序，其中我使用偏好片段与导航抽屉我的问题是我创建导航抽屉，其中我添加了一些菜单项，其中我想加载首选项片段作为第一个元素，当app loads.it就像我不显示那样。当我更改选项I-e。当我更改抽屉菜单选项时，如第二个元素，抽屉菜单中的第一个视图不会替换为第二个元素，它与第一个

重叠

我的导航抽屉xml如下

<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>

我的偏好片段就像这样

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();
            }  
        } 

    }

我正在添加以加载PreferenceFragment的片段类是

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();


    }

导航Drawer类，其中show fragment方法是

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");
        }
    }


}

如果我将调用片段而不是喜欢片段，如下所示它将起作用请帮助我

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;
    }
}

我正在努力清除它的解决方案，请任何机构解决它，请告诉我解决方案。我将是感谢全部请帮帮我

Answer 1

在网上进行了这么多天的研究和搜索我找到了一个解决方案，它对我来说工作正常，对于上述问题，在网上有一个链接http://www.michenux.net/android-preferencefragmentcompat-906.html在这里我发现了一个示例apk和一个关于apk的源代码。因为这个apk有一个功能，因为它解决了我的问题。我清除了导入时出现的源代码错误，之后我将库添加到我的项目中。我使用PreferenceCompatFragment而不是PreferenceFragmentCompat，它解决了我的问题，如果有人需要帮助它也可以帮助他们，以便我发布我的解决方案上述问题。而且我感谢谁帮助了我，谁给了上述问题一些宝贵的建议。我在下面的类中使用了v7支持库的PreferenceFragmentCompat

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;
    }
}

Answer 2

确保所有片段的根布局都有

机器人：背景=＆＃34; @颜色/ your_favorite_color＆＃34;

这样他们就会隐藏下面的其他片段。

如何使用导航抽屉避免Android中的碎片重叠

2 个答案: