All geek questions in one place

CollapsingToolbarLayout name disappears

I have a CollapsingToolBarLayout. When the navigation box closes, the title on the toolbar disappears. This only happens when the toolbar is folded. While in the expanded state, the header remains. I checked the code. But I can not find the error. here is my code for the main activity: -

  import android.support.design.widget.CollapsingToolbarLayout;
    import android.support.design.widget.CoordinatorLayout;
    import android.support.v4.view.ViewPager;
    import android.support.v4.widget.DrawerLayout;
    import android.support.v7.app.ActionBar;  
    import android.support.v7.app.ActionBarDrawerToggle;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import com.defcomm.invento.NavigationDrawerActivity;
     import android.support.v4.widget.NestedScrollView;
    import android.support.v7.widget.RecyclerView;
    import android.support.v7.widget.Toolbar;
    import android.view.Menu;
    import android.view.MenuItem;

     public class INVENTO extends AppCompatActivity {

    private Toolbar toolbar;
    private CoordinatorLayout mCoordinator;
    private CollapsingToolbarLayout mCollapsableLayout;
    private NestedScrollView nestedScrollView;
    private ViewPager mPager;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_new);
        mCoordinator= (CoordinatorLayout) findViewById(R.id.coordinator_layout);
        mCollapsableLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
        toolbar= (Toolbar) findViewById(R.id.appbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayShowHomeEnabled(true);

        mCollapsableLayout.setTitle(getResources().getString(R.string.app_name));
        nestedScrollView= (NestedScrollView) findViewById(R.id.rvToDoList);
        mCollapsableLayout.setExpandedTitleColor(getResources().getColor(R.color.textColor));
        mCollapsableLayout.setCollapsedTitleTextColor(getResources().getColor(R.color.textColor));
        NavigationDrawerActivity drawerFragment= (NavigationDrawerActivity) getSupportFragmentManager().
                findFragmentById(R.id.navigation_drawer);
            drawerFragment.setUp(R.id.navigation_drawer, (DrawerLayout) findViewById(R.id.drawerlayout), toolbar);


    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_invento, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
      }

main xml operation file: -

    <android.support.v4.widget.DrawerLayout

    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawerlayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.defcomm.invento.INVENTO">

    <android.support.design.widget.CoordinatorLayout
        android:id="@+id/coordinator_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        >

        <android.support.design.widget.AppBarLayout
            android:id="@+id/app_bar_layout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            >

            <android.support.design.widget.CollapsingToolbarLayout
                android:id="@+id/collapsing_toolbar"
                android:layout_width="match_parent"
                android:layout_height="200dp"
                android:fitsSystemWindows="true"
                android:background="#3f51b5"
                app:contentScrim="@color/primaryColor"
                app:expandedTitleMarginEnd="64dp"
                app:expandedTitleMarginStart="48dp"
                app:layout_scrollFlags="scroll|exitUntilCollapsed">


            <ImageView
                    android:id="@+id/imageview"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:scaleType="centerCrop"
                    android:src="@drawable/index"
                    app:layout_collapseMode="parallax" />
                <android.support.v7.widget.Toolbar

                    android:id="@+id/appbar"
                    android:layout_width="match_parent"
                    android:layout_height="?attr/actionBarSize"

                    app:layout_scrollFlags="scroll|enterAlways"
                    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
                    app:layout_collapseMode="pin"/>


            </android.support.design.widget.CollapsingToolbarLayout>

        </android.support.design.widget.AppBarLayout>
        <android.support.v4.widget.NestedScrollView
            android:id="@+id/rvToDoList"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.    Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
                android:textSize="26sp"
                android:background="@android:color/white"
                android:padding="5dp"

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

        <fragment
            android:id="@+id/navigation_drawer"
            android:name="com.defcomm.invento.NavigationDrawerActivity"
            android:layout_width="@dimen/drawer_width"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            app:layout="@layout/fragment_navigation_drawer"
            tools:layout="@layout/fragment_navigation_drawer" />

    </android.support.design.widget.CoordinatorLayout>
    </android.support.v4.widget.DrawerLayout>
     }

my java navigation file: -

 import android.content.Context;
    import android.content.SharedPreferences;
    import android.content.res.Configuration;
    import android.os.Bundle;
    import android.support.annotation.Nullable;  
    import android.support.design.widget.CoordinatorLayout;
    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentActivity;
    import android.support.v4.widget.DrawerLayout;
    import android.support.v7.app.ActionBar;
    import android.support.v7.app.ActionBarDrawerToggle;
    import android.support.v7.app.AppCompatActivity;
    import android.support.v7.widget.RecyclerView;
    import android.support.v7.widget.Toolbar;
    import android.view.LayoutInflater;
    import android.support.design.widget.CollapsingToolbarLayout;
    import android.view.View;
    import android.view.ViewGroup;

     public class NavigationDrawerActivity extends Fragment {


    private ActionBarDrawerToggle mdrawerToggle;
    private DrawerLayout mdrawerLayout;
    private boolean mUserLearnedState;
    private CoordinatorLayout mcoordinator;
    private CollapsingToolbarLayout collapsingToolbarLayout;
    View containerId;
    public static final String file_pref_name = "Testpef";
    public static final String KEY_USER_VALUE = "user_learned_drawer";
    private boolean mfromSavedInstanceState;

    public NavigationDrawerActivity() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mUserLearnedState = Boolean.valueOf(readPreference(getActivity(), KEY_USER_VALUE, "false"));
        if (savedInstanceState != null) {
            mfromSavedInstanceState = true;
        }

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View layout=inflater.inflate(R.layout.fragment_navigation_drawer, container, false);
        //recyclerview= (RecyclerView) layout.findViewById(R.id.recycler);
        return layout;

    }


    public void setUp(final int fragmentId, DrawerLayout drawerlayout, final Toolbar toolbar) {
        mdrawerLayout = drawerlayout;

        containerId = getActivity().findViewById(fragmentId);
        mdrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerlayout, toolbar,
                R.string.drawer_open, R.string.drawer_close) {
            @Override
            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
                if (!mUserLearnedState) {
                    mUserLearnedState = true;
                    saveToPreference(getActivity(), KEY_USER_VALUE, mUserLearnedState + "");
                }
                getActivity().invalidateOptionsMenu();
                toolbar.setTitle(getResources().getString(R.string.app_name));
            }

            @Override
            public void onDrawerClosed(View drawerView) {
                super.onDrawerClosed(drawerView);
                getActivity().invalidateOptionsMenu();
                toolbar.setTitle(getResources().getString(R.string.app_name));
            }

            @Override
            public void onDrawerSlide(View drawerView, float slideOffset) {
                if (slideOffset < 0.5f) {
                    toolbar.setAlpha(1 - slideOffset);
                }
            }
        };
        if (!mUserLearnedState && !mfromSavedInstanceState) {
            mdrawerLayout.openDrawer(containerId);
        }

        mdrawerLayout.setDrawerListener(mdrawerToggle);
        mdrawerLayout.post(new Runnable() {
            @Override
            public void run() {
                mdrawerToggle.syncState();

            }
        });

    }


    public static void saveToPreference(Context context, String preferenceName, String preferenceValue) {
        SharedPreferences shared = context.getSharedPreferences(file_pref_name, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = shared.edit();
        editor.putString(preferenceName, preferenceValue);
        editor.apply();
    }

    public static String readPreference(Context context, String preferenceName, String defaultValue) {
        SharedPreferences share = context.getSharedPreferences(file_pref_name, Context.MODE_PRIVATE);
        return share.getString(preferenceName, defaultValue);
    }

}
+4
source share
1 answer

, , , . ,

, android:fitsSystemWindows="true" (), AppBarLayout, . MainActivity .

FYI, setup, NavigationDrawerActivity, , CollapsingToolBarLayout . NavigationView ( ) DrawerFragment, / .

+1

Source: https://habr.com/ru/post/1609886/

More articles:


All Articles