[英]Getting an IndexOutOfBoundsException: index: 1, size: 1 error when trying to get null indexes
[英]Get IndexOutOfBoundsException: Index: 1, Size: 1 When Clicking on Row
過去我有這個工作,但我對我的代碼做了一些更改,現在,每當我從ListView
刪除一行並單擊剩余的行之一時,我都會收到IndexOutOfBoundsException: Index: 1, Size: 1
。
這似乎僅在僅剩一行時才會發生。 如果剩余多於一行,則不會出現此錯誤。
我不確定為什么會發生這種情況,因為用於選擇和刪除行的代碼都沒有改變。
我已經檢查了本網站上的其他帖子,但似乎沒有一個與我所經歷的相似。
Android IndexOutOfBoundsException:索引:1,大小:1
java jtable removeRow:java.lang.IndexOutOfBoundsException:索引:1,大小:1
我已經在下面發布了我的代碼。
日志貓:
java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
at java.util.ArrayList.get(ArrayList.java:411)
at ca.rvogl.tpbcui.views.LeagueAdapter$2.onClick(LeagueAdapter.java:116)
at android.view.View.performClick(View.java:5637)
at android.view.View$PerformClick.run(View.java:22429)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
在列表視圖中選擇一行的代碼:
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
League league = leaguesList.get(position);
int id = league.getId();
String leagueId = String.valueOf(id);
holder.id.setText(leagueId);
holder.name.setText(league.getName());
holder.basescore.setText(league.getBaseScore());
holder.basescorepercentage.setText(league.getBaseScorePercentage());
if (league.getAverage() != "") {
holder.leagueAverage.setText(String.format("League Avg: %s", league.getAverage()));
} else {
holder.leagueAverage.setText(String.format("League Avg: %s", "0"));
}
//Formatting And Displaying Timestamp
holder.timestamp.setText(formatDate(league.getTimestamp()));
holder.buttonViewOption.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//creating a popup menu
PopupMenu popup = new PopupMenu(context, holder.buttonViewOption);
//inflating menu from xml resource
popup.inflate(R.menu.league_options_menu);
//adding click listener
popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()) {
case R.id.profile:
((MainActivity) context).showLeagueDialog(true, leaguesList.get(position), position);
break;
case R.id.delete:
((MainActivity) context).deleteLeague(position);
break;
}
return false;
}
});
//displaying the popup
popup.show();
}
});
holder.name.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int leagueId = leaguesList.get(position).getId();
Intent myIntent = new Intent(context, BowlerActivity.class);
myIntent.putExtra("leagueId", leagueId);
context.startActivity(myIntent);
}
});
}
刪除一行的代碼:
//Deleting League From SQLite Database And Removing The League Item From The List By Its Position
public void deleteLeague(int position) {
Snackbar snackbar = Snackbar.make(findViewById(android.R.id.content), "Series will be deleted.", Snackbar.LENGTH_LONG)
.setActionTextColor(Color.YELLOW)
.setAction("OK", new View.OnClickListener() {
@Override
public void onClick(View v) {
//Deleting The League From The Database
db.deleteLeague(leaguesList.get(position));
//Removing League From The List
leaguesList.remove(position);
mAdapter.notifyItemRemoved(position);
toggleEmptyLeagues();
}
});
snackbar.show();
}
這一行似乎發生了錯誤int leagueId = leaguesList.get(position).getId();
任何修復此錯誤的幫助將不勝感激。
保齡球活動.java
public class BowlerActivity extends AppCompatActivity {
private BowlerAdapter mAdapter;
private final List<Bowler> bowlersList = new ArrayList<>();
private TextView noBowlersView;
private DatabaseHelper db;
private TextView leagueId;
private String savedLeagueId;
private TextView seriesleagueId;
private String seriesLeagueId;
private TextView bowlerAverage;
private TextView bowlerHandicap;
private String savedBowlerAverage;
private static final String PREFS_NAME = "prefs";
private static final String PREF_BLUE_THEME = "blue_theme";
private static final String PREF_GREEN_THEME = "green_theme";
private static final String PREF_ORANGE_THEME = "purple_theme";
private static final String PREF_RED_THEME = "red_theme";
private static final String PREF_YELLOW_THEME = "yellow_theme";
@Override protected void onResume() {
super.onResume();
db = new DatabaseHelper( this );
mAdapter.notifyDatasetChanged( db.getAllBowlers( savedLeagueId ) );
}
@Override
protected void onCreate(Bundle savedInstanceState) {
//Use Chosen Theme
SharedPreferences preferences = getSharedPreferences( PREFS_NAME, MODE_PRIVATE );
boolean useBlueTheme = preferences.getBoolean( PREF_BLUE_THEME, false );
if (useBlueTheme) {
setTheme( R.style.AppTheme_Blue_NoActionBar );
}
boolean useGreenTheme = preferences.getBoolean( PREF_GREEN_THEME, false );
if (useGreenTheme) {
setTheme( R.style.AppTheme_Green_NoActionBar );
}
boolean useOrangeTheme = preferences.getBoolean( PREF_ORANGE_THEME, false );
if (useOrangeTheme) {
setTheme( R.style.AppTheme_Orange_NoActionBar );
}
boolean useRedTheme = preferences.getBoolean( PREF_RED_THEME, false );
if (useRedTheme) {
setTheme( R.style.AppTheme_Red_NoActionBar );
}
boolean useYellowTheme = preferences.getBoolean( PREF_YELLOW_THEME, false );
if (useYellowTheme) {
setTheme( R.style.AppTheme_Yellow_NoActionBar );
}
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bowler);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Objects.requireNonNull( getSupportActionBar() ).setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(getApplicationContext(),MainActivity.class));
finish();
overridePendingTransition(0, 0);
}
});
savedLeagueId = String.valueOf(getIntent().getIntExtra("leagueId",2));
leagueId = findViewById(R.id.tvLeagueId);
bowlerAverage = (TextView) findViewById(R.id.tvBowlerAverage);
bowlerHandicap = (TextView) findViewById(R.id.tvBowlerHandicap);
CoordinatorLayout coordinatorLayout = findViewById( R.id.coordinator_layout );
RecyclerView recyclerView = findViewById( R.id.recycler_view );
noBowlersView = findViewById(R.id.empty_bowlers_view);
db = new DatabaseHelper(this);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.add_bowler_fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
showBowlerDialog(false, null, -1);
}
});
mAdapter = new BowlerAdapter(this, bowlersList);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
//recyclerView.addItemDecoration(new MyDividerItemDecoration(this, LinearLayoutManager.VERTICAL, 16));
recyclerView.setAdapter(mAdapter);
toggleEmptyBowlers();
}
//Inserting New Bowler In The Database And Refreshing The List
private void createBowler(String leagueId, String bowlerName) {
String bowlerAverage = "0";
//Inserting Bowler In The Database And Getting Newly Inserted Bowler Id
long id = db.insertBowler(leagueId, bowlerName, bowlerAverage);
//Get The Newly Inserted Bowler From The Database
Bowler n = db.getBowler(leagueId);
if (n != null) {
//Adding New Bowler To The Array List At Position 0
bowlersList.add( 0, n );
//Refreshing The List
mAdapter.notifyDatasetChanged(db.getAllBowlers(savedLeagueId));
//mAdapter.notifyDataSetChanged();
toggleEmptyBowlers();
}
}
//Updating Bowler In The Database And Updating The Item In The List By Its Position
private void updateBowler(String bowlerName, int position) {
Bowler n = bowlersList.get(position);
//Updating Bowler Text
n.setLeagueId(savedLeagueId);
n.setName(bowlerName);
//Updating The Bowler In The Database
db.updateBowler(n);
//Refreshing The List
bowlersList.set(position, n);
mAdapter.notifyItemChanged(position);
toggleEmptyBowlers();
}
//Deleting Bowler From SQLite Database And Removing The Bowler Item From The List By Its Position
public void deleteBowler(int position) {
Snackbar snackbar = Snackbar.make(findViewById(android.R.id.content), "Series will be deleted.", Snackbar.LENGTH_LONG)
.setActionTextColor(Color.YELLOW)
.setAction("OK", new View.OnClickListener() {
@Override
public void onClick(View v) {
//Deleting The Bowler From The Database
db.deleteBowler(bowlersList.get(position));
//Removing The Bowler From The List
bowlersList.remove(position);
mAdapter.notifyItemRemoved(position);
db.leagueAverageScore(savedLeagueId);
toggleEmptyBowlers();
}
});
snackbar.show();
}
//Opens Dialog With Edit/Delete Options
private void showActionsDialog(final int position) {
LayoutInflater layoutInflaterAndroid = LayoutInflater.from(getApplicationContext());
View view = View.inflate(this, R.layout.dialog_options_1, null);
final AlertDialog.Builder alertDialogBuilderUserInput = new AlertDialog.Builder(new ContextThemeWrapper(BowlerActivity.this, R.style.AppTheme));
alertDialogBuilderUserInput.setView(view);
alertDialogBuilderUserInput.setCancelable(true);
final AlertDialog alertDialog = alertDialogBuilderUserInput.create();
//Cancel
final ImageButton cancel_btn = (ImageButton) view.findViewById(R.id.cancel);
cancel_btn.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view) {
alertDialog.cancel();
}
});
//Edit
ImageButton edit_btn = (ImageButton) view.findViewById(R.id.edit);
edit_btn.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
showBowlerDialog(true, bowlersList.get(position), position);
alertDialog.dismiss();
}
});
ImageButton delete_btn = (ImageButton) view.findViewById(R.id.delete);
delete_btn.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Snackbar snackbar = Snackbar.make(findViewById(android.R.id.content), "Bowler will be deleted.", Snackbar.LENGTH_LONG)
.setAction("OK", new View.OnClickListener() {
@Override
public void onClick(View v) {
deleteBowler(position);
}
});
snackbar.show();
alertDialog.dismiss();
}
});
Window window = alertDialog.getWindow();
window.setGravity(Gravity.TOP);
alertDialog.show();
}
//Show Alert Dialog With EditText Options to Enter/Edit A League
//When shouldUpdate = true, It Will Automatically Display Old Bowler Name And Change The Button Text To UPDATE
public void showBowlerDialog(final boolean shouldUpdate, final Bowler bowler, final int position) {
LayoutInflater layoutInflaterAndroid = LayoutInflater.from(getApplicationContext());
final View view = View.inflate(this, R.layout.dialog_bowler, null);
AlertDialog.Builder alertDialogBuilderUserInput = new AlertDialog.Builder(new ContextThemeWrapper(BowlerActivity.this, R.style.AppTheme));
alertDialogBuilderUserInput.setView(view);
alertDialogBuilderUserInput.setCancelable(true);
leagueId.setText(savedLeagueId);
final EditText inputBowlerName = view.findViewById(R.id.etBowlerNameInput);
TextView dialogTitle = view.findViewById(R.id.dialog_title);
dialogTitle.setText(!shouldUpdate ? getString(R.string.lbl_new_bowler_title) : getString(R.string.lbl_edit_bowler_title));
if (shouldUpdate && bowler != null) {
leagueId.setText(bowler.getLeagueId());
inputBowlerName.setText(bowler.getName());
}
alertDialogBuilderUserInput
.setCancelable(false)
.setPositiveButton(shouldUpdate ? "update" : "save", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialogBox, int id) {
}
})
.setNegativeButton("cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialogBox, int id) {
dialogBox.cancel();
}
});
ImageView bowlerName = (ImageView) view.findViewById (R.id.ivBowlerName);
bowlerName.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
AlertDialog.Builder bowlerName = new AlertDialog.Builder(BowlerActivity.this);
bowlerName.setMessage("Enter the name of the bowler to hold your new scores.");
bowlerName.setCancelable(true);
bowlerName.create();
bowlerName.show();
}
});
final AlertDialog alertDialog = alertDialogBuilderUserInput.create();
alertDialog.show();
alertDialog.getButton( AlertDialog.BUTTON_POSITIVE).setOnClickListener( new View.OnClickListener() {
@Override
public void onClick(View v) {
//Show Toast Message When No Text Is Entered
if (TextUtils.isEmpty(inputBowlerName.getText().toString())) {
Snackbar.make( view, "Enter Bowler Name", Snackbar.LENGTH_LONG )
.setAction( "Action", null ).show();
return;
} else {
alertDialog.dismiss();
}
//Check If User Is Updating Bowler
if (shouldUpdate && bowler != null) {
//Updating Bowler By Its Id
updateBowler(inputBowlerName.getText().toString(), position);
} else {
//Creating New Bowler
createBowler(leagueId.getText().toString(), inputBowlerName.getText().toString());
}
}
});
}
//Toggling List And Empty Bowler View
private void toggleEmptyBowlers() {
//You Can Check bowlerList.size() > 0
if (db.getBowlersCount() > 0) {
noBowlersView.setVisibility( View.GONE);
} else {
noBowlersView.setVisibility( View.VISIBLE);
}
}
@Override
public void onRestart() {
super.onRestart();
//When BACK BUTTON is pressed, the activity on the stack is restarted
//Do what you want on the refresh procedure here
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate( R.menu.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) {
Intent intent = new Intent(this, SettingsActivity.class);
startActivity(intent);
overridePendingTransition(0, 0);
return true;
}
return super.onOptionsItemSelected( item );
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
//Check If Request Code Is The Same As What Is Passed - Here It Is 1
if(requestCode==1)
{
String savedLeagueId=data.getStringExtra("seriesLeagueId");
String seriesBowlerId=data.getStringExtra("seriesBowlerId");
bowlersList.addAll(db.getAllBowlers(savedLeagueId));
}
}
@Override
public void onBackPressed() {
startActivity(new Intent(getApplicationContext(),MainActivity.class));
finish();
overridePendingTransition(0, 0);
}
}
這是它抱怨的線路。 在我將 onClick() 移動到適配器之前,這非常有效。
savedLeagueId = String.valueOf(getIntent().getIntExtra("leagueId",2));
我真的希望有人能幫助我解決這個問題。 我已經嘗試了其他 stackoverflow 帖子中的幾種不同方法,但仍然無法解決。
mAdapter.notifyItemRemoved(position);
意味着適配器將向上移動和動畫項目。 但是,項目不會被重繪。
您可以通過在刪除任何項目后單擊列表的最后一個項目來觀察:您應該看到相同的崩潰。
通過單擊您刪除的項目之后的任何項目(最后一個除外),詳細信息視圖應顯示下一個項目,而不是您單擊的項目。
問題是position
不再相關,因為指數已經改變。 而是使用您在活頁夾中已有的leagueId
值。 只需刪除隱藏String leagueId
的int leagueId
,它應該可以按預期工作。
問題是視圖已經綁定,並且這個方法的位置:
holder.name.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
int leagueId = leaguesList.get(position).getId(); // here position will still be 1 after deletion
//...
}
});
屬於舊索引。 要修復它,請使用您之前固定的相同對象。
holder.name.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int leagueId = league.getId(); //league object will be the same
//...
}
});
****嘗試這個****
@Override
protected void onBindViewHolder(@NonNull final BoardsViewHolder holder, final int position, @NonNull final Board model) {
holder.setTitle(model.getBoardTitle());
holder.setDesc(model.getBoardDesc());
holder.setDate(model.getCreatedOn());
holder.mDeleteBoardButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AlertDialog.Builder alert = new AlertDialog.Builder(mContext);
alert.setTitle("Delete Board");
alert.setMessage("This Board will be deleted forever");
alert.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
final ProgressDialog loading = new ProgressDialog(mContext);
loading.setMessage("Deleting...");
loading.show();
getSnapshots().getSnapshot(position).getReference().delete().addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful()){
notifyDataSetChanged();
loading.dismiss();
}else {
loading.dismiss();
Toast.makeText(mContext,"Something went wrong please try again later",Toast.LENGTH_LONG).show();
}
}
});
}
});
alert.setNegativeButton("Keep", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alert.show();
}
});
這是零基元素的問題。 您的代碼正在嘗試訪問不存在的元素索引。 在調試模式下啟動您的應用程序並逐行查看發生了什么。 Android studio 內置了一個優秀的調試器,所以很容易一步一步地查看變量發生了什么。
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