我将我的应用程序从所有活动更改为带有碎片的NavigationDrawer设置。我的一个活动有一个顶部菜单，这个新设置不再显示。这是我的代码：
爪哇
public class BurgerMenu extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_burger_menu);
Toolbar toolbar = setToolBar();
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
// Check that the activity is using the layout version with
// the fragment_container FrameLayout
if (findViewById(R.id.fragment_container) != null) {
// However, if we're being restored from a previous state,
// then we don't need to do anything and should return or else
// we could end up with overlapping fragments.
if (savedInstanceState != null) {
return;
}
// Create a new Fragment to be placed in the activity layout
LoginFragment firstFragment = new LoginFragment();
// In case this activity was started with special instructions from an
// Intent, pass the Intent's extras to the fragment as arguments
firstFragment.setArguments(getIntent().getExtras());
// Add the fragment to the 'fragment_container' FrameLayout
getSupportFragmentManager().beginTransaction()
.add(R.id.fragment_container, firstFragment).commit();
}
}
private Toolbar setToolBar() {
Toolbar tb = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(tb);
ActionBar ab = getSupportActionBar();
ab.setDisplayHomeAsUpEnabled(true);
return tb;
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.burger_menu, 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);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camera) {
// Handle the camera action
} else if (id == R.id.nav_gallery) {
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
XML：
<?xml version="1.0" encoding="utf-8"?>
<include layout="@layout/toolbar"/>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_burger_menu"
app:menu="@menu/activity_burger_menu_drawer" />
以下是菜单中的片段：
public class MainActivity extends Fragment {
public List<MoodEntry> moodList;
private MoodEntryDataSource dataSource;
public Date month_year_date;
private int status = 0;
private View v;
private FragmentActivity fragmentActivity;
private Context context;
private LineChart chart;
private TextView textTop;
private TextView textMid;
private TextView textBot;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
fragmentActivity = super.getActivity();
v = inflater.inflate(R.layout.activity_main, container, false);
context = fragmentActivity.getApplicationContext();
dataSource = new MoodEntryDataSource(context);
month_year_date = new Date();
final RadioGroup radioGroup = (RadioGroup) v.findViewById(R.id.radioButtonGroupStatus);
final RadioButton private_radio = (RadioButton) v.findViewById(R.id.radioButtonPrivatStart);
final RadioButton business_radio = (RadioButton) v.findViewById(R.id.radioButtonBusinessStart);
radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (private_radio.isChecked()) {
status = MoodEntry.PRIVATE;
} else if (business_radio.isChecked()) {
status = MoodEntry.BUSINESS;
}
loadListEntries();
}
});
// Graph
textTop = (TextView) v.findViewById(R.id.textView7);
textMid = (TextView) v.findViewById(R.id.textView9);
textBot = (TextView) v.findViewById(R.id.textView8);
setYLabelVisibility(false);
chart = (LineChart) v.findViewById(R.id.chart);
chart.setTouchEnabled(false);
chart.setDescription("Datum");
chart.setNoDataText(this.getString(R.string.no_data_to_show));
XAxis xAxis = chart.getXAxis();
//xAxis.setLabelsToSkip(5);
xAxis.setDrawAxisLine(true);
xAxis.setDrawGridLines(false);
xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
xAxis.setAvoidFirstLastClipping(true);
YAxis left = chart.getAxisLeft();
left.setAxisMinValue(-5);
left.setAxisMaxValue(5);
left.setDrawZeroLine(true);
left.setLabelCount(0, false);
left.setDrawLabels(false);
//left.setShowOnlyMinMax(true);
chart.getAxisRight().setEnabled(false);
return v;
};
@Override
public void onResume() {
super.onResume();
dataSource.open();
loadListEntries();
}
@Override
public void onPause() {
super.onPause();
dataSource.close();
}
/**
* Shows the entries for month in month_year_date in diagram and list
*/
private void loadListEntries() {
TextView textView = (TextView) v.findViewById(R.id.textView_MonthYear);
textView.setText(new SimpleDateFormat("MMMM yyyy", Locale.GERMAN).format(month_year_date));
List<MoodEntry> moodListForGraph = dataSource.getMoodEntriesByMonthAndByStatus(month_year_date, MoodEntry.SORT_BY_DATE,status);
updateData(moodListForGraph);
moodList = dataSource.getMoodEntriesByMonthAndByStatus(month_year_date, MoodEntry.SORT_BY_MOOD,status);
MoodEntryListAdapter adapter = new MoodEntryListAdapter(fragmentActivity, moodList);
ListView moodListView = (ListView) v.findViewById(R.id.listview_moods);
moodListView.setAdapter(adapter);
moodListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
showDetailView(position);
}
});
}
/**
* Shows the entries of the month selected by date
* @param date date within month that should be shown
*/
public void setMonthYear(Date date) {
month_year_date = date;
loadListEntries();
}
/**
* Opens the Detail View of list item on pos
* @param pos pos of selected item
*/
public void showDetailView(int pos) {
Bundle bundle = new Bundle();
bundle.putLong("entry_id", moodList.get(pos).getId());
Fragment moodDetail = new MoodDetailActivity();
moodDetail.setArguments(bundle);
FragmentTransaction transaction = fragmentActivity.getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.fragment_container, moodDetail);
transaction.addToBackStack(null);
transaction.commit();
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.menu_main, menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_add_entry:
Fragment addEntry = new AddEntryActivity();
FragmentTransaction transaction = fragmentActivity.getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.fragment_container, addEntry);
transaction.addToBackStack(null);
transaction.commit();
return true;
case R.id.action_date_picker:
Calendar cal = Calendar.getInstance();
cal.setTime(month_year_date);
int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH);
int day = 1;
// TODO 0 durch Theme ersetzen. 0 war: AlertDialog.THEME_HOLO_LIGHT
DatePickerDialog dpd = new DatePickerDialog(getActivity(), 0,datePickerListener,year, month, day){
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
int day = getContext().getResources().getIdentifier("android:id/day", null, null);
if(day != 0){
View dayPicker = findViewById(day);
if(dayPicker != null){
dayPicker.setVisibility(View.GONE);
}
}
}
};
dpd.show();
//DatePickerFragment datePickerFragment = new DatePickerFragment();
//datePickerFragment.show(fragmentActivity.getFragmentManager(), "Date Picker");
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year, int month, int day) {
Calendar cal = Calendar.getInstance();
cal.set(year, month, 1);
setMonthYear(cal.getTime());
}
};
// Graph
public void updateData(List<MoodEntry> moodEntries) {
chart.clear();
ArrayList<Entry> entryList = new ArrayList<Entry>();
ArrayList<String> xVals = new ArrayList<String>();
for (int i = 0; i < moodEntries.size(); i++) {
MoodEntry moodEntry = moodEntries.get(i);
int mood_value = moodEntry.getMood();
xVals.add(moodEntry.getDisplayDateOnly());
entryList.add(new BarEntry(mood_value, i));
}
LineDataSet dataSet = new LineDataSet(entryList, "Einträge");
dataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
dataSet.setLineWidth(2f);
dataSet.setColor(getColor(R.color.graph_line));
dataSet.setCircleColor(getColor(R.color.graph_line));
ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
dataSets.add(dataSet);
LineData data = new LineData(xVals, dataSets);
data.setDrawValues(false);
if (moodEntries.size()!=0) {
chart.setData(data);
Legend legend = chart.getLegend();
legend.setEnabled(false);
setYLabelVisibility(true);
chart.notifyDataSetChanged();
chart.invalidate();
} else {
setYLabelVisibility(false);
}
}
private int getColor(int colorRes) {
return ContextCompat.getColor(getContext(), colorRes);
}
private void setYLabelVisibility(boolean visible) {
if (visible) {
textTop.setVisibility(View.VISIBLE);
textMid.setVisibility(View.VISIBLE);
textBot.setVisibility(View.VISIBLE);
} else {
textTop.setVisibility(View.INVISIBLE);
textMid.setVisibility(View.INVISIBLE);
textBot.setVisibility(View.INVISIBLE);
}
}
}
导航工具栏中的工具栏未显示此片段，片段菜单也不显示。
任何解决方案？
答案 0 :(得分：0)
自己找到答案，不得不改变某事。在XML中：
<?xml version="1.0" encoding="utf-8"?>
<StackLayout>
<include layout="@layout/toolbar"/>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</StackLayout>
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_burger_menu"
app:menu="@menu/activity_burger_menu_drawer" />