使用Realm数据库中的项目的RecyclerView崩溃
[英]RecyclerView using item from a Realm database crashes
问题描述
我有一个片段，它想显示游戏对象的列表。 当片段开始时，我从数据库中读取了所有Game对象，并将它们添加到List中。 在列表的大小达到12之前，一切正常。如果确实如此，则即使在显示片段之前，应用程序也会崩溃。 如果列表大于13，则只有当我一直向下滚动并尝试显示下面的游戏时，它才会崩溃。
关于什么原因的任何想法？ 我真的不相信RecyclerView是问题所在。 这是我的课。 如果您需要更多信息，请告诉我。
任何帮助将非常欢迎。
我的游戏课
public class Game extends RealmObject{
@PrimaryKey
private long id;
private RealmList<Coordinates> mGameCoordinates;
private RealmList<Coordinates> mDrinkingStopsCoordinates;
private RealmList<Team> mTeams;
private String mDate;
private boolean mIsGameFinished;
private long mStartTime;
private long mFinishTime;
private long mTimeTaken;
public Game(RealmList<Team> teams, String date, long id) {
mTeams = teams;
mDate = date;
this.id = id;
}
public int getGameSize(){
int size = mTeams.size();
return size;
}
public String getDate() {
return mDate;
}
public void setDate(String date) {
mDate = date;
}
public RealmList<Team> getTeams() {
return mTeams;
}
public void setTeams(RealmList<Team> teams) {
mTeams = teams;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
//Default empty constructor - must be present
public Game(){
}
public RealmList<Coordinates> getDrinkingStopsCoordinates() {
return mDrinkingStopsCoordinates;
}
public void setDrinkingStopsCoordinates(RealmList<Coordinates> drinkingStopsCoordinates) {
mDrinkingStopsCoordinates = drinkingStopsCoordinates;
}
public RealmList<Coordinates> getGameCoordinates() {
return mGameCoordinates;
}
public void setGameCoordinates(RealmList<Coordinates> gameCoordinates) {
mGameCoordinates = gameCoordinates;
}
public long getStartTime() {
return mStartTime;
}
public void setStartTime(long startTime) {
mStartTime = startTime;
}
public long getFinishTime() {
return mFinishTime;
}
public void setFinishTime(long finishTime) {
mFinishTime = finishTime;
}
public long getTimeTaken() {
mTimeTaken = mFinishTime - mStartTime;
return mTimeTaken;
}
public void setTimeTaken(long timeTaken) {
mTimeTaken = timeTaken;
}
public boolean isGameFinished() {
return mIsGameFinished;
}
public void setGameFinished(boolean gameFinished) {
mIsGameFinished = gameFinished;
}
}
我的片段
public class OldGameFragment extends Fragment {
private static final String TAG = "OldGameFragment";
private RecyclerView mRecyclerView;
private TextView mTextViewPlayers;
private TextView mTextViewDate;
private RecyclerAdapter mRecyclerAdapter;
private Toolbar myToolbar;
private String mStringReadyToShow;
private List<Game> mGames;
private RealmResults<Game> playerRealmResults;
private List<Game> mGameRealmList = new ArrayList<>();
private Realm mRealm;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_old_game, container,false);
//DB
mRealm = Realm.getDefaultInstance();
//Singleton
ActivityStateSingleton activityStateSingleton = ActivityStateSingleton.getInstance();
activityStateSingleton.setActivityFlag(1);
mRecyclerView = (RecyclerView)v.findViewById(R.id.recyclerview_player_list);
mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
//Toolbar
myToolbar = (Toolbar)v.findViewById(R.id.my_toolbar_old_game);
myToolbar.setTitle(R.string.drawer_old_game);
myToolbar.setTitleTextColor(0xffffffff);
((AppCompatActivity)getActivity()).setSupportActionBar(myToolbar);
((AppCompatActivity)getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
readFromDB();
return v;
}
//Fragment
public static OldGameFragment newInstance(){
return new OldGameFragment();
}
public void readFromDB(){
RealmResults<Game> playerRealmResults = mRealm.where(Game.class).findAll();
int count = 0;
for(Game game : playerRealmResults){
mGameRealmList.add(game);
count++;
Log.d(TAG, "Count " + count);
}
mRecyclerAdapter = new RecyclerAdapter(mGameRealmList);
mRecyclerView.setAdapter(mRecyclerAdapter);
mRecyclerView.addItemDecoration(new SimpleDividerItemDecoration(getContext()));
mRecyclerAdapter.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(long id) {
Intent intent = GameOverviewActivity.toGameOverview(getActivity(), id);
startActivity(intent);
}
});
mRecyclerAdapter.notifyDataSetChanged();
}
/*RecyclerView*/
public class RecyclerHolder extends RecyclerView.ViewHolder {
private Game mGame;
private SwipeRevealLayout mSwipeRevealLayout;
private View mDeleteView;
public RecyclerHolder(View itemView) {
super(itemView);
mTextViewPlayers = (TextView)itemView.findViewById(R.id.list_item_player_teams);
mTextViewDate = (TextView)itemView.findViewById(R.id.list_item_date);
mSwipeRevealLayout = (SwipeRevealLayout)itemView.findViewById(R.id.swipe_layout);
mDeleteView = (View) itemView.findViewById(R.id.delete_layout);
}
public void bindPlayer(Game game){
mGame = game;
String name = game.getTeams().get(0).getTeamName();
int num = game.getTeams().get(0).getPlayers().size();
String text = name + "(" + num + ")";
for(Team t : game.getTeams()){
if(!text.contains(t.getTeamName())){
name = t.getTeamName();
num = t.getPlayers().size();
text += " vs. " + name + "(" + num + ")";
}
mDeleteView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
AlertDialog.Builder builder = new AlertDialog.Builder(new ContextThemeWrapper(getContext(),
R.style.AlertDialogCustom));
builder.setTitle(R.string.dialog_alert_title).setMessage(R.string.delete_game)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
mRecyclerAdapter.dismissGame(getAdapterPosition(), mGames.get(getAdapterPosition()).getId());
}
}).setNegativeButton("Nein", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(getContext(), "No", Toast.LENGTH_SHORT).show();
}
});
AlertDialog dialog = builder.create();
dialog.show();
//So it won´t show the white borders around the round egdges
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
}
});
}
mTextViewPlayers.setText(text);
String date = getResources().getString(R.string.date) + game.getDate();
String space = " ";
mTextViewDate.setText(space + date);
}
}
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerHolder>{
/* This object helps you save/restore the open/close state of each view*/
private final ViewBinderHelper mViewBinderHelper = new ViewBinderHelper();
private OnItemClickListener mOnItemClickListener;
public RecyclerAdapter(List<Game> realmResults){
mGames = realmResults;
/*To only open one row at the time*/
mViewBinderHelper.setOpenOnlyOne(true);
}
@Override
public RecyclerHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(getActivity());
View v = layoutInflater.inflate(
R.layout.list_item_game_rows, parent, false);
return new RecyclerHolder(v);
}
@Override
public void onBindViewHolder(RecyclerHolder holder, final int position) {
final Game game = mGames.get(position);
final String data = mGames.get(position).toString();
// You need to provide a String id which uniquely defines the data object.
mViewBinderHelper.bind(holder.mSwipeRevealLayout, data);
holder.bindPlayer(game);
View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View v) {
mOnItemClickListener.onItemClick(game.getId());
}
};
mTextViewDate.setOnClickListener(listener);
mTextViewPlayers.setOnClickListener(listener);
}
@Override
public int getItemCount() {
return mGames.size();
}
/*Dismiss Game*/
public void dismissGame(int position, final long id){
mGames.remove(position);
this.notifyItemRemoved(position);
mRealm.executeTransaction(new Realm.Transaction() {
@Override
public void execute(Realm realm) {
RealmResults<Game> gameRealmResults = mRealm.where(Game.class).equalTo("id", id).findAll();
gameRealmResults.deleteAllFromRealm();
}
});
}
public OnItemClickListener getOnItemClickListener(){
return mOnItemClickListener;
}
public void setOnItemClickListener(OnItemClickListener onItemClickListener){
this.mOnItemClickListener = onItemClickListener;
}
}
}
编辑：这是日志：
FATAL EXCEPTION: main Process: bosseln.swenden.de.bosseln, PID: 23424
Theme: themes:{default=overlay:com.init.designloper.init_v001, iconPack:com.init.designloper.init_v001, fontPkg:com.init.designloper.init_v001, com.android.systemui=overlay:com.init.designloper.init_v001, com.android.systemui.navbar=overlay:com.init.designloper.init_v001}
java.lang.ArrayIndexOutOfBoundsException: rowIndex > available rows: 0 > 0
at io.realm.internal.LinkView.nativeGetTargetRowIndex(Native Method)
at io.realm.internal.LinkView.getTargetRowIndex(LinkView.java:81)
at io.realm.RealmList.get(RealmList.java:448)
at bosseln.swenden.de.bosseln.fragments.OldGameFragment$RecyclerHolder.bindPlayer(OldGameFragment.java:149)
at bosseln.swenden.de.bosseln.fragments.OldGameFragment$RecyclerAdapter.onBindViewHolder(OldGameFragment.java:223)
at bosseln.swenden.de.bosseln.fragments.OldGameFragment$RecyclerAdapter.onBindViewHolder(OldGameFragment.java:195)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6279)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6312)
at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5258)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5521)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5363)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5359)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2141)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1525)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1488)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:585)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3506)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3254)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3767)
at android.view.View.layout(View.java:16639)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079)
at android.view.View.layout(View.java:16639)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:16639)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:16639)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1735)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1579)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1488)
at android.view.View.layout(View.java:16639)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:16639)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1735)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1579)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1488)
at android.view.View.layout(View.java:16639)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2934)
at android.view.View.layout(View.java:16639)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.
1 个解决方案
解决方案1
0 已采纳 2017-03-06 18:03:31
请检查数据库中的行，我认为您可能在第13行得到一些空值。
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