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Code Issues Releases Wiki Activity

Add a highlighting Navbar on the front page

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Used to help orient people scrolling through books, in a way that is colorful. Shading the background of a list item is also totally a possibility.
This commit is contained in:
Bradlee Speice 2014-07-13 22:43:54 -04:00
parent d85182a76f
commit 28227f2ef3
7 changed files with 141 additions and 286 deletions
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283
app/src/main/java/org/bspeice/minimalbible/NavigationDrawerFragment.java
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@ -1,283 +0,0 @@
package org.bspeice.minimalbible;
import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
/**
* Fragment used for managing interactions for and presentation of a navigation drawer.
* See the <a href="https://developer.android.com/design/patterns/navigation-drawer.html#Interaction">
* design guidelines</a> for a complete explanation of the behaviors implemented here.
*/
public class NavigationDrawerFragment extends Fragment {
/**
* Remember the position of the selected item.
*/
private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";
/**
* Per the design guidelines, you should show the drawer on launch until the user manually
* expands it. This shared preference tracks this.
*/
private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";
/**
* A pointer to the current callbacks instance (the Activity).
*/
private NavigationDrawerCallbacks mCallbacks;
/**
* Helper component that ties the action bar to the navigation drawer.
*/
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
private ListView mDrawerListView;
private View mFragmentContainerView;
private int mCurrentSelectedPosition = 0;
private boolean mFromSavedInstanceState;
private boolean mUserLearnedDrawer;
public NavigationDrawerFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Read in the flag indicating whether or not the user has demonstrated awareness of the
// drawer. See PREF_USER_LEARNED_DRAWER for details.
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);
if (savedInstanceState != null) {
mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
mFromSavedInstanceState = true;
}
// Select either the default item (0) or the last selected item.
selectItem(mCurrentSelectedPosition);
}
@Override
public void onActivityCreated (Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// Indicate that this fragment would like to influence the set of actions in the action bar.
setHasOptionsMenu(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mDrawerListView = (ListView) inflater.inflate(
R.layout.fragment_navigation_drawer, container, false);
mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
});
mDrawerListView.setAdapter(new ArrayAdapter<String>(
//getActionBar().getThemedContext(),
getActivity(),
android.R.layout.simple_list_item_1,
android.R.id.text1,
new String[]{
getString(R.string.title_section1),
getString(R.string.title_section2),
getString(R.string.title_section3),
}));
mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
return mDrawerListView;
}
public boolean isDrawerOpen() {
return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(mFragmentContainerView);
}
/**
* Users of this fragment must call this method to set up the navigation drawer interactions.
*
* @param fragmentId The android:id of this fragment in its activity's layout.
* @param drawerLayout The DrawerLayout containing this fragment's UI.
*/
public void setUp(int fragmentId, DrawerLayout drawerLayout) {
mFragmentContainerView = getActivity().findViewById(fragmentId);
mDrawerLayout = drawerLayout;
// set a custom shadow that overlays the main content when the drawer opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
// set up the drawer's list view with items and click listener
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the navigation drawer and the action bar app icon.
mDrawerToggle = new ActionBarDrawerToggle(
getActivity(), /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.navigation_drawer_open, /* "open drawer" description for accessibility */
R.string.navigation_drawer_close /* "close drawer" description for accessibility */
) {
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
if (!isAdded()) {
return;
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
if (!isAdded()) {
return;
}
if (!mUserLearnedDrawer) {
// The user manually opened the drawer; store this flag to prevent auto-showing
// the navigation drawer automatically in the future.
mUserLearnedDrawer = true;
SharedPreferences sp = PreferenceManager
.getDefaultSharedPreferences(getActivity());
sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).commit();
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
};
// If the user hasn't 'learned' about the drawer, open it to introduce them to the drawer,
// per the navigation drawer design guidelines.
if (!mUserLearnedDrawer && !mFromSavedInstanceState) {
mDrawerLayout.openDrawer(mFragmentContainerView);
}
// Defer code dependent on restoration of previous instance state.
mDrawerLayout.post(new Runnable() {
@Override
public void run() {
mDrawerToggle.syncState();
}
});
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
private void selectItem(int position) {
mCurrentSelectedPosition = position;
if (mDrawerListView != null) {
mDrawerListView.setItemChecked(position, true);
}
if (mDrawerLayout != null) {
mDrawerLayout.closeDrawer(mFragmentContainerView);
}
if (mCallbacks != null) {
mCallbacks.onNavigationDrawerItemSelected(position);
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mCallbacks = (NavigationDrawerCallbacks) activity;
} catch (ClassCastException e) {
throw new ClassCastException("Activity must implement NavigationDrawerCallbacks.");
}
}
@Override
public void onDetach() {
super.onDetach();
mCallbacks = null;
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Forward the new configuration the drawer toggle component.
mDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// If the drawer is open, show the global app actions in the action bar. See also
// showGlobalContextActionBar, which controls the top-left area of the action bar.
if (mDrawerLayout != null && isDrawerOpen()) {
inflater.inflate(R.menu.global, menu);
showGlobalContextActionBar();
}
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
if (item.getItemId() == R.id.action_example) {
Toast.makeText(getActivity(), "Example action.", Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* Per the navigation drawer design guidelines, updates the action bar to show the global app
* 'context', rather than just what's in the current screen.
*/
private void showGlobalContextActionBar() {
ActionBar actionBar = getActionBar();
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setTitle(R.string.app_name);
}
private ActionBar getActionBar() {
return ((ActionBarActivity) getActivity()).getSupportActionBar();
}
/**
* Callbacks interface that all activities using this fragment must implement.
*/
public static interface NavigationDrawerCallbacks {
/**
* Called when an item in the navigation drawer is selected.
*/
void onNavigationDrawerItemSelected(int position);
}
}

1
app/src/main/java/org/bspeice/minimalbible/activity/BaseNavigationDrawerFragment.java
View File

@ -190,6 +190,7 @@ public class BaseNavigationDrawerFragment extends Fragment {
mCurrentSelectedPosition = position;
if (mDrawerListView != null) {
mDrawerListView.setItemChecked(position, true);
((NavDrawerAdapter<String>)mDrawerListView.getAdapter()).setCurrentlyHighlighted(position);
}
if (mDrawerLayout != null) {
mDrawerLayout.closeDrawer(mFragmentContainerView);

105
app/src/main/java/org/bspeice/minimalbible/activity/NavDrawerAdapter.java Normal file
View File

@ -0,0 +1,105 @@
package org.bspeice.minimalbible.activity;
import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import org.bspeice.minimalbible.R;
import java.util.List;
import butterknife.ButterKnife;
import butterknife.InjectView;
/**
* Helper for setting up a highlighting navbar
* This class (and its usage) needs some work refactoring,
* but the PoC is looking good!
*/
public class NavDrawerAdapter<T> extends BaseAdapter {
Context context;
List<T> objects;
int currentlyHighlighted;
public NavDrawerAdapter(Context context, List<T> objects) {
this.context = context;
this.objects = objects;
}
public void setCurrentlyHighlighted(int currentlyHighlighted) {
this.currentlyHighlighted = currentlyHighlighted;
}
public int getCurrentlyHighlighted() {
return this.currentlyHighlighted;
}
@Override
public int getCount() {
return objects.size();
}
@Override
public Object getItem(int i) {
return objects.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
NavItemHolder holder;
if (view == null || view.getTag() == null) {
view = inflater.inflate(R.layout.list_navigation_drawer, viewGroup, false);
holder = new NavItemHolder(view, i == currentlyHighlighted, (T) getItem(i));
} else {
holder = (NavItemHolder) view.getTag();
}
holder.bind();
return view;
}
/**
* Holder object for items in the Nav Drawer
*/
protected class NavItemHolder {
@InjectView(R.id.navlist_selected_highlight)
ImageView highlight;
@InjectView(R.id.navlist_content)
TextView content;
boolean highlighted;
View v;
T object;
public NavItemHolder(View v, boolean highlighted, T object) {
this.v = v; // Needed for resolving colors below
ButterKnife.inject(this, v);
this.highlighted = highlighted;
this.object = object;
}
public void bind() {
content.setText(object.toString());
if (highlighted) {
highlight.setImageDrawable(new ColorDrawable(v.getResources()
.getColor(R.color.navbar_highlight)));
} else {
highlight.setImageDrawable(new ColorDrawable(v.getResources()
.getColor(R.color.navbar_unhighlighted)));
}
}
}
}

7
app/src/main/java/org/bspeice/minimalbible/activity/viewer/ViewerNavDrawerFragment.java
View File

@ -11,6 +11,7 @@ import android.widget.ListView;
import org.bspeice.minimalbible.Injector;
import org.bspeice.minimalbible.R;
import org.bspeice.minimalbible.activity.BaseNavigationDrawerFragment;
import org.bspeice.minimalbible.activity.NavDrawerAdapter;
import org.bspeice.minimalbible.activity.viewer.bookutil.VersificationUtil;
import org.crosswire.jsword.book.Book;
@ -43,9 +44,9 @@ public class ViewerNavDrawerFragment extends BaseNavigationDrawerFragment {
List<String> bookNames = vUtil.getNiceBookNames(mainBook)
.toList().toBlocking().first();
mDrawerListView.setAdapter(new ArrayAdapter<String>(getActionBar()
.getThemedContext(), android.R.layout.simple_list_item_1,
android.R.id.text1, bookNames));
mDrawerListView.setAdapter(new NavDrawerAdapter<String>(getActionBar()
.getThemedContext(), bookNames));
mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
return mDrawerListView;
}

27
app/src/main/res/layout/list_navigation_drawer.xml Normal file
View File

@ -0,0 +1,27 @@
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/navlist_selected_highlight"
android:minHeight="@dimen/navigation_drawer_highlight_height"
android:minWidth="24dp"
android:layout_gravity="center_vertical|right"
android:paddingStart="?android:attr/listPreferredItemPaddingStart"
android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"/>
<!-- Largely taken from simple_list_item_1.xml -->
<TextView
style="?android:attr/textAppearanceListItemSmall"
android:paddingStart="?android:attr/listPreferredItemPaddingStart"
android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
android:minHeight="?android:attr/listPreferredItemHeightSmall"
android:gravity="center_vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/navlist_content" />
</LinearLayout>

2
app/src/main/res/values/colors.xml
View File

@ -2,4 +2,6 @@
<resources>
<color name="statusbar">#dddddd</color>
<color name="actionbar">#ffffff</color>
<color name="navbar_highlight">#cc0000</color>
<color name="navbar_unhighlighted">#00cc0000</color>
</resources>

2
app/src/main/res/values/dimens.xml
View File

@ -6,4 +6,6 @@
<!-- Per the design guidelines, navigation drawers should be between 240dp and 320dp:
https://developer.android.com/design/patterns/navigation-drawer.html -->
<dimen name="navigation_drawer_width">240dp</dimen>
<dimen name="navigation_drawer_highlight_height">32dp</dimen>
</resources>