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4つのxmlファイルを使用しています。フラグメントを開始しようとするとエラーは表示されません.4つのxmlファイルを使用しています。ナビゲーションバーの主な機能があります。 getFragmentManagerのオプションはナビゲーションバーからclcikedが、私はアイテムをclcikとき、私は何のビューを取得されていないtab1のフラグメントが見つかりビューは見つかりませんでした。
**activity main xml**
<
?xml version="1.0" encoding="utf-8"?>
<
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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="@layout/app_bar_main"
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_main"
app:menu="@menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
This is number 2 App main bar.xml
Code:
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
This is Number 3 content main.xml
Code:
<
FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/container_frame_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
</FrameLayout>
This is number 4 nav header
Code:
<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="@dimen/nav_header_vertical_spacing"
android:src="@drawable/logo192"
/>
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="EDX Engine Option" />
This is the mainactivity
package com.example.sabarinathan.navigationdrawer;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.app.Fragment;
import android.view.View;
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.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Toast.makeText(getApplicationContext(),"test",Toast.LENGTH_LONG).show();
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);
}
@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.Sample) {
Toast.makeText(getApplicationContext(),"Sample",Toast.LENGTH_LONG).show();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
Tab1 fragment = new Tab1();
fragmentTransaction.replace(R.id.container_frame_layout, fragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
} else if (id == R.id.EnterProfile) {
} else if (id == R.id.RequestUniv) {
} else if (id == R.id.ViewSuggestions) {
}
else if(id== R.id.Home){
}
else if(id== R.id.AdiitionalApps){
}
else if(id== R.id.Coupon){
}
else if(id== R.id.FAQ){
}
else if(id== R.id.FlashHelp){
}
else if(id== R.id.Premium){
}
else if(id== R.id.ABoutUs){
}
else if(id== R.id.Tab1){
}
else if(id== R.id.Tab2){
}
else if(id== R.id.Tab3){
}
else if(id== R.id.Tab4){
}
else if(id== R.id.Tab5){
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
This is the fragment class
package com.example.sabarinathan.navigationdrawer;
// This project was created by Ferdousur Rahman Shajib
// www.androstock.com
// You use this project anytime, anywhere. There is no copywrite issue.
import android.app.Activity;
import android.app.Fragment;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.LinearLayout;
/**
* Created by Ferdousur Rahman Shajib on 27-10-2015.
*/
public class Tab1 extends Fragment {
Activity activity;
Button button1;
private WebView webView;
private Bundle webViewBundle;
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View v =inflater.inflate(R.layout.tab_1,container,false);
LinearLayout ll = (LinearLayout) inflater.inflate(R.layout.tab_1,
container, false);
activity = getActivity();
webView = (WebView) ll.findViewById(R.id.webView1);
webView.setWebViewClient(new WebViewClient());
if (webViewBundle == null) {
webView.loadUrl("https://edxengine.com/services/MyUniversity/");
} else {
webView.restoreState(webViewBundle);
}
return ll;
}
@Override
public void onPause() {
super.onPause();
webViewBundle = new Bundle();
webView.saveState(webViewBundle);
}
}
This the fragment xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center">
<WebView
android:id="@+id/webView1"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
when i start a fragment i get no view found error
この質問には多くの回答があります。 [Here]（http://stackoverflow.com/questions/10803672/findviewbyid-not-working-for-an-include）それらのいずれか –