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私はフラグメントをロードするベースのナビゲーション・ドロワ・アクティビティを持っています。その断片。フラグメントのレイアウトにリサイクルビューがあります。リサイクラービューには、Glideを使用してインターネットから画像を読み込むアダプターがあります。イメージを読み込むことができません。 （マニフェストでインターネット許可を追加しました）。 マイベース活性がある：recyclerviewはフラグメント内にアダプタ値をロードしていません
import android.net.Uri;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
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.RelativeLayout;
import android.widget.Toast;
public class BaseActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener, Item1Fragment.OnFragmentInteractionListener {
/**
* Frame layout: Which is going to be used as parent layout for child activity layout.
* This layout is protected so that child activity can access this
*/
protected RelativeLayout relativeLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
relativeLayout = (RelativeLayout) findViewById(R.id.content_frame);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_base);
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.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
//Add the Very First i.e Squad Fragment to the Container
Fragment item1Fragment = new Item1Fragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.add(R.id.content_frame, item1Fragment, null);
fragmentTransaction.commit();
}
@Override
public void onFragmentInteraction(Uri uri) {
}
@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.base, 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();
FragmentTransaction fragmentTransaction = this.getSupportFragmentManager().beginTransaction();
if (id == R.id.nav_camera) {
Fragment item1Fragment = new Item1Fragment();
fragmentTransaction.replace(R.id.content_frame, item1Fragment);
fragmentTransaction.commit();
} else if (id == R.id.nav_gallery) {
Fragment item2Fragment = new Item2Fragment();
fragmentTransaction.replace(R.id.content_frame, item2Fragment);
fragmentTransaction.commit();
} else if (id == R.id.nav_slideshow) {
Toast.makeText(getApplicationContext(), "333", Toast.LENGTH_SHORT).show();
} else if (id == R.id.nav_manage) {
Toast.makeText(getApplicationContext(), "444", Toast.LENGTH_SHORT).show();
} else if (id == R.id.nav_share) {
Toast.makeText(getApplicationContext(), "555", Toast.LENGTH_SHORT).show();
} else if (id == R.id.nav_send) {
Toast.makeText(getApplicationContext(), "666", Toast.LENGTH_SHORT).show();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
// Container Activity must implement this interface
public interface OnHeadlineSelectedListener {
public void onArticleSelected(int position);
}
}
アクティビティレイアウトは次のとおり
<?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" android:background="@color/colorPrimary"
tools:openDrawer="start">
<RelativeLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<include
layout="@layout/app_bar_base"
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_base"
app:menu="@menu/activity_base_drawer" />
</android.support.v4.widget.DrawerLayout>
フラグメント：
import android.content.Context;
import android.content.res.Configuration;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
public class Item1Fragment extends Fragment {
private OnFragmentInteractionListener mListener;
private ArrayList<ImageModel> data = new ArrayList<>();
private GalleryAdapter mAdapter;
private RecyclerView mRecyclerView;
public static String IMGS[] = {
"https://images.unsplash.com/photo-1444090542259-0af8fa96557e?q=80&fm=jpg&w=1080&fit=max&s=4b703b77b42e067f949d14581f35019b",
"https://images.unsplash.com/photo-1439546743462-802cabef8e97?dpr=2&fit=crop&fm=jpg&h=725&q=50&w=1300",
"https://images.unsplash.com/photo-1441155472722-d17942a2b76a?q=80&fm=jpg&w=1080&fit=max&s=80cb5dbcf01265bb81c5e8380e4f5cc1",
"https://images.unsplash.com/photo-1437651025703-2858c944e3eb?dpr=2&fit=crop&fm=jpg&h=725&q=50&w=1300",
"https://images.unsplash.com/photo-1431538510849-b719825bf08b?dpr=2&fit=crop&fm=jpg&h=725&q=50&w=1300",
"https://images.unsplash.com/photo-1434873740857-1bc5653afda8?dpr=2&fit=crop&fm=jpg&h=725&q=50&w=1300",
"https://images.unsplash.com/photo-1439396087961-98bc12c21176?dpr=2&fit=crop&fm=jpg&h=725&q=50&w=1300",
"https://images.unsplash.com/photo-1433616174899-f847df236857?dpr=2&fit=crop&fm=jpg&h=725&q=50&w=1300",
"https://images.unsplash.com/photo-1438480478735-3234e63615bb?dpr=2&fit=crop&fm=jpg&h=725&q=50&w=1300",
"https://images.unsplash.com/photo-1438027316524-6078d503224b?dpr=2&fit=crop&fm=jpg&h=725&q=50&w=1300"
};
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
for (int i = 0; i < IMGS.length; i++) {
ImageModel imageModel = new ImageModel();
imageModel.setName("Image " + i);
imageModel.setUrl(IMGS[i]);
data.add(imageModel);
}
View view = inflater.inflate(R.layout.fragment_item1,container,false);
mRecyclerView = (RecyclerView)view.findViewById(R.id.list);
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
mRecyclerView.setLayoutManager(new GridLayoutManager(getActivity(), 3));
}else{
mRecyclerView.setLayoutManager(new GridLayoutManager(getActivity(), 2));
}
mRecyclerView.setHasFixedSize(true);
mAdapter = new GalleryAdapter(getActivity().getApplicationContext(), data);
mRecyclerView.setAdapter(mAdapter);
return view;
}
//
@Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof OnFragmentInteractionListener) {
mListener = (OnFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement OnFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
断片レイアウト：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="com.akl.nav2.Item1Fragment">
<android.support.v7.widget.RecyclerView
android:id="@+id/list" android:background="#FFBB00"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</RelativeLayout>
アダプタ：
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import com.bumptech.glide.Glide;
import com.bumptech.glide.load.engine.DiskCacheStrategy;
import java.util.ArrayList;
import java.util.List;
/**
* Created by akl on 3/12/2016.
*/
public class GalleryAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
Context context;
List<ImageModel> data = new ArrayList<>();
public GalleryAdapter(Context context, List<ImageModel> data) {
this.context = context;
this.data = data;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
RecyclerView.ViewHolder viewHolder;
View v;
v = LayoutInflater.from(parent.getContext()).inflate(
R.layout.list_item, parent, false);
viewHolder = new MyItemHolder(v);
return viewHolder;
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
Glide.with(context).load(data.get(position).getUrl())
.thumbnail(0.5f)
.override(200, 200)
.crossFade()
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(((MyItemHolder) holder).mImg);
}
@Override
public int getItemCount() {
return data.size();
}
public static class MyItemHolder extends RecyclerView.ViewHolder {
ImageView mImg;
public MyItemHolder(View itemView) {
super(itemView);
mImg = (ImageView) itemView.findViewById(R.id.item_img);
}
}
}
マニフェスト：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.akl.nav2">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".BaseActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category
android:name="android.intent.category.LAUNCHER"
android:theme="@style/AppTheme.NoActionBar" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
何らかのエラーまたは例外が発生していますか？ –
いいえ、エラーはありません。例外はありません。実際、フラグメントのonCreateView（）では、ビューが返される直前に、ブレークポイントを設定し、アダプタ値が使用可能であることを確認します。グライドが画像をレンダリングしていないという問題がある場合、私はそれを得られません。 – Adi
あなたのアダプタonBindViewHolderにブレークポイントを入れて、コントロールが来ているかどうか一度チェックしてください –