向大家致意，我正在尝试制作一个带有导航抽屉的应用程序，该应用程序能够在其中一个抽屉中具有可选的联系人，但它始终崩溃。我构建的应用程序非常适合显示联系人。当我开始尝试实现对联系人的单击以导航到另一个具有联系人信息的片段时，该应用程序将无法启动。任何帮助，甚至为我指明正确的方向，都将不胜感激。
主要活动Java片段
import android.support.v4.app.FragmentTransaction;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.example.v1z0.assignments.Utils.*;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
private static final String TAG = "MainActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
Log.d(TAG, "onCreate: started");
initImageLoader();
init();
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
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.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
private void initImageLoader()
{
UniversalImageLoader universalImageLoader = new UniversalImageLoader(MainActivity.this);
ImageLoader.getInstance().init(universalImageLoader.getConfig());
}
@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.main, 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_activity_faculty) {
getSupportFragmentManager().beginTransaction().replace(R.id.content_frame,
new ViewContactsFragment()).commit();
} else if (id == R.id.nav_second_layout) {
getFragmentManager().beginTransaction().replace(R.id.content_frame,
new SecondFragment()).commit();
} else if (id == R.id.nav_third_layout) {
getFragmentManager().beginTransaction().replace(R.id.content_frame,
new ThirdFragment()).commit();
} else if (id == R.id.nav_fourth_layout) {
getFragmentManager().beginTransaction().replace(R.id.content_frame,
new FourthFragment()).commit();
} else if (id == R.id.nav_fifth_layout) {
getFragmentManager().beginTransaction().replace(R.id.content_frame,
new FifthFragment()).commit();
} else if (id == R.id.nav_sixth_layout) {
getFragmentManager().beginTransaction().replace(R.id.content_frame,
new SixthFragment()).commit();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
private void init()
{
{
ViewContactsFragment fragment = new ViewContactsFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.fragment_container, fragment);
transaction.addToBackStack(null);
transaction.commit();
}
}
}
我的联系人片段
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
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.ImageView;
public class ContactFragment extends Fragment {
private static final String TAG = "ContactFragment";
public ContactFragment(){
super();
setArguments(new Bundle());
}
private Toolbar toolbar;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_contact, container, false);
toolbar = (Toolbar) view.findViewById(R.id.contactToolbar);
Log.d(TAG, "onCreateView: started");
//Toolbar Pre-req//
((AppCompatActivity)getActivity()).setSupportActionBar(toolbar);
setHasOptionsMenu(true);
//Go Back//
ImageView ivBackArrow = (ImageView) view.findViewById(R.id.ivBackArrow);
ivBackArrow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Log.d(TAG, "onClick: clicked back arrow");
getActivity().getSupportFragmentManager().popBackStack();
}
});
//Go To Edit//
ImageView ivEdit = (ImageView) view.findViewById(R.id.ivEdit);
ivEdit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Log.d(TAG, "onClick: clicked edit");
EditContactFragment fragment = new EditContactFragment();
FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.fragment_container, fragment);
transaction.addToBackStack(getString(R.string.edit_contact_fragment));
Log.d(TAG, "onClick: fragment" + getString(R.string.edit_contact_fragment));
transaction.commit();
}
});
return view;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.contact_menu, menu);
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId())
{
case R.id.menuitem_delete:
Log.d(TAG, "onOptionsItemSelected: deleting contact");
}
return super.onOptionsItemSelected(item);
}
}
还包含联系人信息的View Contact Fragment
import android.content.Context;
import android.support.design.widget.AppBarLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.ListView;
import java.util.ArrayList;
import com.example.v1z0.assignments.Models.Contact;
import com.example.v1z0.assignments.Utils.CustomListAdapter;
public class ViewContactsFragment extends Fragment {
private static final String TAG = "FirstFragment";
//images
private String testImageURL = "cis.ncu.edu.jm/images/faculty/man.jpg";
private String hgraham = "cis.ncu.edu.jm/images/faculty/hgraham.jpg";
private String dmitchell = "cis.ncu.edu.jm/images/faculty/dmitchell.png";
private String mnarayana = "cis.ncu.edu.jm/images/faculty/mnarayana.jpg";
private String hosborne = "cis.ncu.edu.jm/images/faculty/hosborne.jpg";
private String mreid = "cis.ncu.edu.jm/images/faculty/mreid.jpg";
private String esmall = "cis.ncu.edu.jm/images/faculty/esmall.jpg";
private String hsmith = "cis.ncu.edu.jm/images/faculty/hsmith.jpg";
private String ktooma = "cis.ncu.edu.jm/images/faculty/ktooma.jpg";
//widgets etc
private static final int STANDARD_APPBAR = 0;
private static final int SEARCH_APPBAR = 1;
private int mAppBarState;
private AppBarLayout viewContactsBar, searchBar;
private CustomListAdapter adapter;
private ListView contactsList;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_viewcontacts, container, false);
viewContactsBar = (AppBarLayout) view.findViewById(R.id.viewContactsToolbar);
searchBar = (AppBarLayout) view.findViewById(R.id.searchtoolbar);
contactsList = (ListView) view.findViewById(R.id.contactsList);
Log.d(TAG, "onCreate: started");
setAppBarState(STANDARD_APPBAR);
setupContactsList();
//add contact navigation//
FloatingActionButton fab = (FloatingActionButton) view.findViewById(R.id.fabAddContact);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Log.d(TAG, "onClick: clicked fab");
}
});
//search contact navigation//
ImageView ivSearchContact = (ImageView) view.findViewById(R.id.ivSearchIcon);
ivSearchContact.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Log.d(TAG, "onClick: clicked search");
toggleToolBarState();
}
});
ImageView ivBackArrow = (ImageView) view.findViewById(R.id.ivBackArrow);
ivBackArrow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Log.d(TAG, "onClick: clicked back arrow");
toggleToolBarState();
}
});
return view;
}
private void setupContactsList()
{
final ArrayList<Contact> contacts = new ArrayList<>();
contacts.add(new Contact("Mr. Sheldon Glenn ", "(876) 963-7281", "work", "sheldon.glenn@ncu.edu.jm ", testImageURL));
contacts.add(new Contact("Mr. Hamlet Graham ", "(876) 963-7278", "work", "hamlet.graham@ncu.edu.jm ", hgraham));
contacts.add(new Contact("Mr. Oche Magbegor ", "(876) 963-7280", "work", "oche.magbegor@ncu.edu.jm ", testImageURL));
contacts.add(new Contact("Mr. Damion Mitchell ", "(876) 963-7285", "work", "damion.mitchell AT ncu.edu.jm ", dmitchell));
contacts.add(new Contact("Mr. Melvin Narayana ", "(876) 963-7279", "work", "melvin.narayana@ncu.edu.jm", mnarayana));
contacts.add(new Contact("Mr. Henry Osborne ", "(876) 963-7282", "work", "Henry.Osborne@ncu.edu.jm ", hosborne));
contacts.add(new Contact("Mr. Marlon Richards ", " (876) 963-7276", "work", "marlon.richards@ncu.edu.jm", testImageURL));
contacts.add(new Contact("Mrs. E. Beverley Small ", "(876) 963-7276", "work", "esmall@ncu.edu.jm ", esmall));
contacts.add(new Contact("Mr. Halzen Smith ", "(876) 963-7284", "work", "hsmith@ncu.edu.jm ", hsmith));
contacts.add(new Contact("Mr. Keron Tooma ", " (876) 963-7283", "work", "keron.tooma@ncu.edu.jm ", ktooma));
adapter = new CustomListAdapter(getActivity(), R.layout.layout_contactslistitem, contacts, "http://");
contactsList.setAdapter(adapter);
contactsList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l)
{
Log.d(TAG, "onClick: navigating to contact" + (R.string.contact_fragment));
ContactFragment fragment = new ContactFragment();
FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.fragment_container, fragment);
transaction.addToBackStack(getString(R.string.edit_contact_fragment));
Log.d(TAG, "onClick: fragment" + getString(R.string.contact_fragment));
transaction.commit();
}
});
}
private void toggleToolBarState()
{
Log.d(TAG, "toggleToolBarState: toggling AppBatState");
if (mAppBarState == STANDARD_APPBAR)
{
setAppBarState(SEARCH_APPBAR);
}
else
{
setAppBarState(STANDARD_APPBAR);
}
}
@Override
public void onResume() {
super.onResume();
setAppBarState(STANDARD_APPBAR);
}
private void setAppBarState(int state)
{
Log.d(TAG, "setAppBarState: changing app bar state to" + state);
mAppBarState = state;
if (mAppBarState == STANDARD_APPBAR)
{
searchBar.setVisibility(View.GONE);
viewContactsBar.setVisibility(View.VISIBLE);
//keyboard hide//
View view = getView();
InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
try
{
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}catch (NullPointerException e)
{
Log.d(TAG, "setAppBarState: NullPointerException" + e.getMessage());
}
}
else if (mAppBarState == SEARCH_APPBAR)
{
viewContactsBar.setVisibility(View.GONE);
searchBar.setVisibility(View.VISIBLE);
//keyboard show//
InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
}
}
}
LogCat错误
--------- beginning of crash
2018-10-14 01:48:19.869 7041-7041/com.example.v1z0.assignments E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.v1z0.assignments, PID: 7041
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.v1z0.assignments/com.example.v1z0.assignments.MainActivity}: java.lang.IllegalArgumentException: No view found for id 0x7f080055 (com.example.v1z0.assignments:id/fragment_container) for fragment ViewContactsFragment{dcf4537 #0 id=0x7f080055}
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f080055 (com.example.v1z0.assignments:id/fragment_container) for fragment ViewContactsFragment{dcf4537 #0 id=0x7f080055}
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1422)
at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1759)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1827)
at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:797)
at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2596)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2383)
at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2338)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2245)
at android.support.v4.app.FragmentManagerImpl.dispatchStateChange(FragmentManager.java:3248)
at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:3200)
at android.support.v4.app.FragmentController.dispatchActivityCreated(FragmentController.java:195)
at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:597)
at android.support.v7.app.AppCompatActivity.onStart(AppCompatActivity.java:177)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1334)
at android.app.Activity.performStart(Activity.java:7029)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2741)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
XML片段
个人联系页面
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/relLayout1">
<include layout="@layout/snippet_contacttoolbar"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/relLayout1"
android:id="@+id/relLayout2">
<de.hdodenhof.circleimageview.CircleImageView
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
app:civ_border_color="@color/black"
app:civ_border_width="1dp"
android:id="@+id/contactImage" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/contactImage"
android:layout_marginTop="30dp"
android:textSize="30sp"
android:textColor="@color/black"
android:layout_marginStart="30dp"
android:id="@+id/tvName" />
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/tvName"
android:id="@+id/lvContactProperties">
</ListView>
</RelativeLayout>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
查看联系人列表片段
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="@drawable/first">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/relLayout1">
<include layout="@layout/snippet_searchtoolbar"/>
<include layout="@layout/snippet_viewcontactstoolbar"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/relLayout1">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/contactsList"></ListView>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textSize="25sp"
android:id="@+id/textNoContacts"
android:textColor="@color/black"
/>
</RelativeLayout>
</RelativeLayout>
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginEnd="20dp"
android:layout_marginBottom="20dp"
android:elevation="10dp"
app:fabSize="normal"
app:rippleColor="@color/colorAccent"
android:src="@drawable/ic_person_add"
android:id="@+id/fabAddContact"/>
</android.support.design.widget.CoordinatorLayout>
编辑页面
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.constraint.ConstraintLayout>
对于冗长的问题我深表歉意
答案 0 :(得分：0)
在您的init() MainActivity类文件中，您引用了错误的资源ID。
private void init()
{
{
ViewContactsFragment fragment = new ViewContactsFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.content_frame, fragment);//not R.id.fragment_container
transaction.addToBackStack(null);
transaction.commit();
}
}
答案 1 :(得分：0)
除了navylover答案。我还更改了ViewContactFragment中的Fragment_container，它起作用了
contactsList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id)
{
Log.d(TAG, "onClick: navigating to contact" + (R.string.contact_fragment));
ContactFragment fragment = new ContactFragment();
FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.content_frame, fragment);
transaction.addToBackStack(getString(R.string.edit_contact_fragment));
Log.d(TAG, "onClick: fragment contentFrame" );
transaction.commit();
}
});