The simplified onCreate code below effectively creates dynamically a matrix of ImageViews on the basis of data in a file.
I (think) a listener is attached to each ImageView item. However, when I try to get the id of an item, v.getId() always returns -1.
What am I doing wrong?
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
this.setContentView(R.layout.packlevel);
Resources resources = this.getResources();
/*
process file data
*/
for (int i = 0; i < 24; i++)
{
if (i % 6 == 0)
{
row = new TableRow(this);
tableLayout.addView(row);
}
ImageView iv = new ImageView(this);
int resourceId = resources.getIdentifier(tileNames[tilesMatrix[i]], "drawable",
getPackageName());
iv.setImageResource( resourceId );
iv.setOnTouchListener(this);
row.addView(iv);
}
}
public boolean onTouch(View v, MotionEvent event)
{
int tileId = v.getId();
}
Related
I have figured out how to detect the collision of the rectangle and the image but where I am having problems is when I call the method to relocate the image it does it like 10 times in a row then won't work again.
I am making my first game in JavaFX. Im trying to make a basic snake game but haven't been able to figure out what is wrong with relocating the food after the snake collides with it.
public class Main extends Application {
Stage window;
Scene mainScene;
private final int WIDTH = 500;
private final int HEIGHT = 500;
Timeline timeline;
private Direction action = Direction.RIGHT;
private Rectangle snakeHead;
private final int speed = 3;
private int xSpeed = 3;
private int ySpeed = 3;
private int snakeW = 20;
private int snakeH = 20;
private BoundingBox snakeBox;
private BoundingBox foodBox;
private ImageView food;
private Random rand = new Random();
private double foodX;
private double foodY;
enum Direction {
LEFT,RIGHT,UP,DOWN;
}
private Parent createContent(){
Pane root = new Pane();
//food = new Food();
food = new ImageView(new Image("resources/apple.png"));
food.setFitHeight(25);
food.setFitWidth(25);
food.setPreserveRatio(true);
newFood();
foodBox = new BoundingBox(foodX,foodY,20,20);
snakeHead = new Rectangle(snakeW,snakeH);
snakeHead.setTranslateX(200);
snakeHead.setTranslateY(200);
snakeBox = new BoundingBox(snakeHead.getTranslateX(),snakeHead.getTranslateY(),snakeW,snakeH);
timeline = new Timeline(new KeyFrame(Duration.millis(16), e-> {
//Snake movement
if(action == Direction.LEFT) {snakeHead.setTranslateX(snakeHead.getTranslateX() - xSpeed);}
if(action == Direction.RIGHT) {snakeHead.setTranslateX(snakeHead.getTranslateX() + xSpeed);}
if(action == Direction.UP) {snakeHead.setTranslateY(snakeHead.getTranslateY() - ySpeed);}
if(action == Direction.DOWN) {snakeHead.setTranslateY(snakeHead.getTranslateY() + ySpeed);}
//Stops snake at edges of screen
if(snakeHead.getTranslateX() <= 0){
xSpeed = 0;
if(action == Direction.RIGHT){xSpeed = speed;}
}
if(snakeHead.getTranslateX() >= WIDTH - snakeW){
xSpeed = 0;
if(action == Direction.LEFT){xSpeed = speed;}
}
if(snakeHead.getTranslateY() <= 0){
ySpeed = 0;
if(action == Direction.DOWN){ySpeed = speed;}
}
if(snakeHead.getTranslateY() >= HEIGHT - snakeH){
ySpeed = 0;
if(action == Direction.UP){ySpeed = speed;}
}
//TODO: Detect Collisions
if(foodBox.intersects(snakeHead.getTranslateX(),snakeHead.getTranslateY (),snakeW,snakeH)){
newFood();
System.out.println("Collision");
}
}));
timeline.setCycleCount(Timeline.INDEFINITE);
root.getChildren().addAll(snakeHead,food);
return root;
}
private void newFood() {
foodX = rand.nextInt(500);
foodY = rand.nextInt(500);
food.setTranslateX(foodX);
food.setTranslateY(foodY);
System.out.println("X " + foodX);
System.out.println("Y " + foodY);
}
private void startGame() {
timeline.play();
}
private void stopGame() {
timeline.stop();
}
#Override
public void start(Stage primaryStage) throws Exception{
window = primaryStage;
mainScene = new Scene(createContent(),WIDTH,HEIGHT);
mainScene.setOnKeyPressed(e-> {
switch(e.getCode()) {
case UP: action = Direction.UP; break;
case DOWN: action = Direction.DOWN; break;
case LEFT: action = Direction.LEFT; break;
case RIGHT: action = Direction.RIGHT; break;
}
});
window.setTitle("Snake");
window.setResizable(false);
window.setScene(mainScene);
window.show();
startGame();
}
public static void main(String[] args) {
launch(args);
}
}
What I'm looking for is when the rectangle hits the apple it relocates. I have been struggling with this for awhile and don't know what to do. Im a fairly new programmer still.
You can check for intersection of snake's and food's boundsInParent.
if(food.getBoundsInParent().intersects(snakeHead.getBoundsInParent())){
newFood();
System.out.println("Collision");
}
I am populating a comboBox with items taken from a sql database when initializing the thread.
If anyone's interested:
public void initialize(URL arg0, ResourceBundle arg1) {
if(arr != null || arr.length > 0) {
for(int i = 0; i<arr.length; i++) {
cmBox.getItems().add(arr[i]);
}
}
}
I have a part of my code that adds a new value to the sql table, and I want to re-populate the comboBox when that happens.
if I do:
cmBox.getItems().clear();
arr = sqld.selectAll();
if(arr != null || arr.length > 0) {
for(int i = 0; i<arr.length; i++) {
cmBox.getItems().add(arr[i]);
}
}
It works fine, but I can't see the new changes unless I close and re-open the window that displays the comboBox.
No errors or anything, just looking for creative ways of re-loading a comboBox and have it actually show the updated values without manually closing and re-opening the window.
You don't need a refresh button just run comboBox.setItems(...) when you add "a new value to the sql table" this should update the combo box here is an example
public class Main extends Application {
private int[] data;
private int dataCount = 0;
#Override
public void start(Stage primaryStage) throws Exception{
data = randomizeData(dataCount);
ComboBox comboBox = new ComboBox();
comboBox.setItems(FXCollections.observableArrayList(
Arrays.stream(data).boxed().collect(Collectors.toList())));
Button updateDataButton = new Button("Update values in SQL Table");
updateDataButton.setOnAction(event -> {
//Update your SQL data
updateData();
//Refresh List
comboBox.setItems(FXCollections.observableArrayList(
Arrays.stream(data).boxed().collect(Collectors.toList())));
});
VBox vBox = new VBox();
vBox.setAlignment(Pos.CENTER);
vBox.getChildren().addAll(comboBox, updateDataButton);
Scene scene = new Scene(vBox);
primaryStage.setScene(scene);
primaryStage.show();
}
private int[] randomizeData(int additional){
int[] data = new int[5+additional];
for (int i = 0; i < data.length; i++) {
data[i] = (int) (Math.random()*10);
}
return data;
}
private void updateData(){
data = randomizeData(++dataCount);
}
public static void main(String[] args) { launch(args); }
}
i have a problem with my searching method.
With this method, I can enter a word in the textfield and display the word in the textarea. However, this only happens once if i let it run. I need to expand it so, that every time I click on "enter," the program should continue with searching in the textarea. How can i do this?
And please give me code examples. i have only 2 days left for my presentation.
Thanks a lot for the helps
textfield.setOnKeyPressed(new EventHandler<KeyEvent>() {
#Override
public void handle(KeyEvent event) {
if (event.getCode() == KeyCode.ENTER) {
String text = textarea.getText();
Labeled errorText = null;
if (textfield.getText() != null && !textfield.getText().isEmpty()) {
index = textarea.getText().indexOf(textfield.getText());
textarea.getText();
if (index == -1) {
errorText.setText("Search key Not in the text");
} else {
// errorText.setText("Found");
textarea.selectRange(index, index + textfield.getLength());
}
}
}
}
});
There's an overloaded version of the indexOf method allowing you to search starting at a specific index. Keep track of the index of your last find and start searching from this position:
#Override
public void start(Stage primaryStage) throws Exception {
TextField textField = new TextField("foo");
TextArea textarea = new TextArea();
for (int i = 0; i < 10; i++) {
textarea.appendText("foo\nbarfoobarfoofoo\n");
}
textField.setOnAction(evt -> {
String searchText = textField.getText();
if (searchText.isEmpty()) {
return; // searching for empty text doesn't make sense
}
int index = textarea.getSelection().getEnd();
// in case of the first search, start at the beginning
// TODO: adjust condition/starting index according to needs
if (textarea.getSelection().getLength() == 0) {
index = 0;
}
// find next occurrence
int newStartIndex = textarea.getText().indexOf(searchText, index);
// mark occurrence
if (newStartIndex >= 0) {
textarea.selectRange(newStartIndex, newStartIndex + searchText.length());
}
});
Scene scene = new Scene(new VBox(textField, textarea));
primaryStage.setScene(scene);
primaryStage.show();
}
Edit
If you are not satisfied with searching the element after the selection ( or after the cursor, if there is no range selected), you could save the data of the end of the last match:
#Override
public void start(Stage primaryStage) throws Exception {
TextField textField = new TextField("foo");
TextArea textarea = new TextArea();
for (int i = 0; i < 10; i++) {
textarea.appendText("foo\nbarfoobarfoofoo\n");
}
class SearchHandler implements EventHandler<ActionEvent> {
int index = 0;
#Override
public void handle(ActionEvent event) {
String searchText = textField.getText();
String fullText = textarea.getText();
if (index + searchText.length() > fullText.length()) {
// no more matches possible
// TODO: notify user
return;
}
// find next occurrence
int newStartIndex = textarea.getText().indexOf(searchText, index);
// mark occurrence
if (newStartIndex >= 0) {
index = newStartIndex + searchText.length();
textarea.selectRange(newStartIndex, index);
} else {
index = fullText.length();
// TODO: notify user
}
}
}
SearchHandler handler = new SearchHandler();
textField.setOnAction(handler);
// reset index to search from start when changing the text of the TextField
textField.textProperty().addListener((o, oldValue, newValue) -> handler.index = 0);
Scene scene = new Scene(new VBox(textField, textarea));
primaryStage.setScene(scene);
primaryStage.show();
}
I'm trying to create a cardpane with custom HBox CardCells.
Issue #1
How do I set the background of this CardPane? I want it to be transparent, but it won't change from this grey color. I have tried adding styling to the node directly as well as add a custom stylesheet. I have also tried the setBackground method:
Issue #2
Taken from this SO post, I was able to add an animation for cell generation in which it fades in upwards. However, in random card inserts, different cells lose the node that I have embedded in that cell. I don't know if this is because of the recycling concept of these cards (based on Gluon docs) or what:
Issue #3
I created functionality such that the user can delete the cards by swiping left. However, the same issue from Issue #2 arises, but to an even greater extent in which the entire cell is missing but still taking space. If I have only one cell and swipe left, it works all the time. However when I have more than one cell (for example I have 3 cells and I delete the 2nd cell), things get broken, event handlers for cells get removed, swiping left on one cell starts the animation on a cell below it, etc. Is there a way I can perform this functionality or is my best bet to just get rid of the CardPane and use a combination of VBox and HBox elements?
private void addToCardPane(CustomCard newCard) {
ObservableList<Node> items = cardpane.getItems();
boolean override = false;
for (int i = 0; i < cardpane.getItems().size(); i++) {
CustomCard box = (CustomCard) items.get(i);
if (box.checkEquality(newCard)) {
box.increaseNumber(newCard);
override = true;
break;
}
}
if (override == false) {
cardpane.getItems().add(newCard);
cardpane.layout();
VirtualFlow vf = (VirtualFlow) cardpane.lookup(".virtual-flow");
Node cell = vf.getCell(cardpane.getItems().size() - 1);
cell.setTranslateX(0);
cell.setOpacity(1.0);
if (!cardpane.lookup(".scroll-bar").isVisible()) {
FadeInUpTransition f = new FadeInUpTransition(cell);
f.setRate(2);
f.play();
} else {
PauseTransition p = new PauseTransition(Duration.millis(20));
p.setOnFinished(e -> {
vf.getCell(cardpane.getItems().size() - 1).setOpacity(0);
vf.show(cardpane.getItems().size() - 1);
FadeTransition f = new FadeTransition();
f.setDuration(Duration.seconds(1));
f.setFromValue(0);
f.setToValue(1);
f.setNode(vf.getCell(cardpane.getItems().size() - 1));
f.setOnFinished(t -> {
});
f.play();
});
p.play();
}
}
initializeDeletionLogic();
}
private void initializeDeletionLogic() {
VirtualFlow vf = (VirtualFlow) cardpane.lookup(".virtual-flow");
for (int i = 0; i < cardpane.getItems().size(); i++) {
CustomCard card = (CustomCard ) cardpane.getItems().get(i);
Node cell2 = vf.getCell(i);
addRemovalLogicForCell(card, cell2);
}
}
private static double initX = 0;
private void addRemovalLogicForCell(OpioidCard card, Node cell) {
card.setOnMousePressed(e -> {
initX = e.getX();
});
card.setOnMouseDragged(e -> {
double current = e.getX();
if (current < initX) {
if ((current - initX) < 0 && (current - initX) > -50) {
cell.setTranslateX(current - initX);
}
}
});
card.setOnMouseReleased(e -> {
double current = e.getX();
double delta = current - initX;
System.out.println(delta);
if (delta > -50) {
int originalMillis = 500;
double ratio = (50 - delta) / 50;
int newMillis = (int) (500 * ratio);
TranslateTransition translate = new TranslateTransition(Duration.millis(newMillis));
translate.setToX(0);
translate.setNode(cell);
translate.play();
} else {
FadeTransition ft = new FadeTransition(Duration.millis(300), cell);
ft.setFromValue(1.0);
ft.setToValue(0);
TranslateTransition translateTransition
= new TranslateTransition(Duration.millis(300), cell);
translateTransition.setFromX(cell.getTranslateX());
translateTransition.setToX(-400);
ParallelTransition parallel = new ParallelTransition();
parallel.getChildren().addAll(ft, translateTransition);
parallel.setOnFinished(evt -> {
removeCard(card);
ObservableList<CustomCard > cells = FXCollections.observableArrayList();
for(int i = 0; i < this.cardpane.getItems().size(); i++){
cells.add((CustomCard )this.cardpane.getItems().get(i));
}
this.cardpane.getItems().clear();
for(int i = 0; i < cells.size(); i++){
this.cardpane.getItems().add(cells.get(i));
}
initializeDeletionLogic();
initX = 0;
});
parallel.play();
}
});
}
private void removeCard(OpioidCard card) {
for (int i = 0; i < cardpane.getItems().size(); i++) {
if (cardpane.getItems().get(i) == card) {
cardpane.getItems().remove(i);
updateNumber(this.totalNumber);
break;
}
}
for (int i = 0; i < dataList.size(); i++) {
if (dataList.get(i).getName().equalsIgnoreCase(card.getName())) {
dataList.remove(i);
}
}
this.cardpane.layout();
initializeDeletionLogic();
}
WORKING DEMO OF ISSUE:
package com.mobiletestapp;
import com.gluonhq.charm.glisten.animation.FadeInUpTransition;
import com.gluonhq.charm.glisten.control.AppBar;
import com.gluonhq.charm.glisten.control.CardCell;
import com.gluonhq.charm.glisten.control.CardPane;
import com.gluonhq.charm.glisten.mvc.View;
import com.gluonhq.charm.glisten.visual.MaterialDesignIcon;
import com.sun.javafx.scene.control.skin.VirtualFlow;
import javafx.animation.FadeTransition;
import javafx.animation.ParallelTransition;
import javafx.animation.PauseTransition;
import javafx.animation.TranslateTransition;
import javafx.scene.Node;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.util.Duration;
public class BasicView extends View {
class CustomCard extends StackPane{
public CustomCard(String text){
this.getChildren().add(new Label(text));
}
}
private static double initX = 0;
private static void addRemovalLogicForCell(CustomCard card, Node cell) {
card.setOnMousePressed(e -> {
initX = e.getX();
});
card.setOnMouseDragged(e -> {
double current = e.getX();
if (current < initX) {
if ((current - initX) < 0 && (current - initX) > -50) {
cell.setTranslateX(current - initX);
}
}
});
card.setOnMouseReleased(e -> {
double current = e.getX();
double delta = current - initX;
System.out.println(delta);
if (delta > -50) {
int originalMillis = 500;
double ratio = (50 - delta) / 50;
int newMillis = (int) (500 * ratio);
TranslateTransition translate = new TranslateTransition(Duration.millis(newMillis));
translate.setToX(0);
translate.setNode(cell);
translate.play();
} else {
FadeTransition ft = new FadeTransition(Duration.millis(300), cell);
ft.setFromValue(1.0);
ft.setToValue(0);
TranslateTransition translateTransition
= new TranslateTransition(Duration.millis(300), cell);
translateTransition.setFromX(cell.getTranslateX());
translateTransition.setToX(-400);
ParallelTransition parallel = new ParallelTransition();
parallel.getChildren().addAll(ft, translateTransition);
parallel.setOnFinished(evt -> {
for(int i = 0; i < cardPane.getItems().size(); i++){
if(cardPane.getItems().get(i) == card){
cardPane.getItems().remove(i);
}
}
initX = 0;
});
parallel.play();
}
});
}
private static CardPane cardPane = null;
public BasicView(String name) {
super(name);
cardPane = new CardPane();
cardPane.setCellFactory(p -> new CardCell<CustomCard>() {
#Override
public void updateItem(CustomCard item, boolean empty) {
super.updateItem(item, empty);
if (!empty) {
setText(null);
setGraphic(item);
} else {
setText(null);
setGraphic(null);
}
}
});
setCenter(cardPane);
}
private static void addCard(CustomCard newCard){
cardPane.getItems().add(newCard);
cardPane.layout();
VirtualFlow vf = (VirtualFlow) cardPane.lookup(".virtual-flow");
Node cell = vf.getCell(cardPane.getItems().size() - 1);
cell.setTranslateX(0);
cell.setOpacity(1.0);
if (!cardPane.lookup(".scroll-bar").isVisible()) {
FadeInUpTransition f = new FadeInUpTransition(cell);
f.setRate(2);
f.play();
} else {
PauseTransition p = new PauseTransition(Duration.millis(20));
p.setOnFinished(e -> {
vf.getCell(cardPane.getItems().size() - 1).setOpacity(0);
vf.show(cardPane.getItems().size() - 1);
FadeTransition f = new FadeTransition();
f.setDuration(Duration.seconds(1));
f.setFromValue(0);
f.setToValue(1);
f.setNode(vf.getCell(cardPane.getItems().size() - 1));
f.setOnFinished(t -> {
});
f.play();
});
p.play();
}
addRemovalLogicForCell(newCard, cell);
}
#Override
protected void updateAppBar(AppBar appBar) {
appBar.setNavIcon(MaterialDesignIcon.MENU.button(e -> System.out.println("Menu")));
appBar.setTitleText("Basic View");
appBar.getActionItems().add(MaterialDesignIcon.ADD.button(e -> addCard(new CustomCard("Hello"))));
}
}
This leads to the following output when adding and swiping left for deletion:
If you check with ScenicView, you will notice that the CardPane holds a CharmListView control, which in terms uses an inner ListView that takes the size of its parent.
So this should work:
.card-pane > .charm-list-view > .list-view {
-fx-background-color: transparent;
}
As I mentioned, the control is based on a ListView, so the way to provide cells is using the cell factory. As you can read in the control's JavaDoc:
The CardPane is prepared for a big number of items by reusing its cards.
A developer may personalize cell creation by specifying a cell factory through cellFactoryProperty(). The default cell factory is prepared to accept objects from classes that extend Node or other classes that don't extend from Node, in the latter case the card text will be given by the Object.toString() implementation of the object.
If you are not using it yet, consider using something like this:
cardPane.setCellFactory(p -> new CardCell<T>() {
#Override
public void updateItem(T item, boolean empty) {
super.updateItem(item, empty);
if (!empty) {
setText(null);
setGraphic(createContent(item));
} else {
setText(null);
setGraphic(null);
}
}
});
This should manage for you the cards layout, avoiding blank cells or wrong reuse of them.
As for the animation, there shouldn't be a problem in using it.
For swipe animations, the Comments2.0 sample provides a similar use case: A ListView where each cell uses a SlidingListTile. Have a look at its implementation.
You should be able to reuse it with the CardPane.
Try it out, and if you still have issues, post a working sample here (or provide a link), so we can reproduce them.
EDIT
Based on the posted code, a comment related to how the factory cell should be set:
All the JavaFX controls using cells (like ListView or TableView), and also the Gluon CardPane, follow the MVC pattern:
Model. The control is bound to a model, using an observable list of items of that model. In the case of the sample, a String, or any regular POJO, or, as the preferred choice, a JavaFX bean (with observable properties).
So in this case, you should have:
CardPane<String> cardPane = new CardPane<>();
View. The control has a method to set how the cell renders the model, the cellFactory. This factory can define just text, or any graphic node, like your CustomCard.
In this case, you should have:
cardPane.setCellFactory(p -> new CardCell<String>() {
private final CustomCard card;
{
card = new CustomCard();
}
#Override
public void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (item != null && !empty) {
card.setText(item);
setGraphic(card);
setText(null);
} else {
setGraphic(null);
setText(null);
}
}
});
where:
class CustomCard extends StackPane {
private final Label label;
public CustomCard(){
label = new Label();
getChildren().add(label);
}
public void setText(String text) {
label.setText(text);
}
}
Internally, the control uses a VirtualFlow that manages to reuse cells, and only modify the content (the model) when scrolling.
As you can see in the cell factory, now you'll iterate over the model (String), while the CustomCard remains the same, and only the content its updated.
Using this approach doesn't present any of the issues you have described, at least when adding cells.
EDIT 2
I've come up with a solution that works fine for me and should solve all the issues mentioned. Besides what was mentioned before, it is also required restoring the transformations applied to the CustomCard in the updateItem callbacks.
public class BasicView extends View {
private final CardPane<String> cardPane;
public BasicView(String name) {
super(name);
cardPane = new CardPane<>();
cardPane.setCellFactory(p -> new CardCell<String>() {
private final CustomCard card;
private final HBox box;
{
card = new CustomCard();
card.setMaxWidth(Double.MAX_VALUE);
card.prefWidthProperty().bind(widthProperty());
box = new HBox(card);
box.setAlignment(Pos.CENTER);
box.setStyle("-fx-background-color: grey");
addRemovalLogicForCell(card);
}
#Override
public void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (item != null && !empty) {
card.setText(item);
card.setTranslateX(0);
card.setOpacity(1.0);
setGraphic(box);
setText(null);
} else {
setGraphic(null);
setText(null);
}
}
});
setCenter(cardPane);
}
class CustomCard extends StackPane {
private final Label label;
public CustomCard(){
label = new Label();
label.setStyle("-fx-font-size: 20;");
getChildren().add(label);
setStyle("-fx-padding: 20; -fx-background-color: white");
setPrefHeight(100);
}
public void setText(String text) {
label.setText(text);
}
public String getText() {
return label.getText();
}
}
private double initX = 0;
private void addRemovalLogicForCell(CustomCard card) {
card.setOnMousePressed(e -> {
initX = e.getX();
});
card.setOnMouseDragged(e -> {
double current = e.getX();
if ((current - initX) < 0 && (current - initX) > -50) {
card.setTranslateX(current - initX);
}
});
card.setOnMouseReleased(e -> {
double current = e.getX();
double delta = current - initX;
if (delta < 50) {
if (delta > -50) {
int originalMillis = 500;
double ratio = (50 - delta) / 50;
int newMillis = (int) (500 * ratio);
TranslateTransition translate = new TranslateTransition(Duration.millis(newMillis));
translate.setToX(0);
translate.setNode(card);
translate.play();
} else {
FadeTransition ft = new FadeTransition(Duration.millis(300), card);
ft.setFromValue(1.0);
ft.setToValue(0);
TranslateTransition translateTransition
= new TranslateTransition(Duration.millis(300), card);
translateTransition.setFromX(card.getTranslateX());
translateTransition.setToX(-400);
ParallelTransition parallel = new ParallelTransition();
parallel.getChildren().addAll(ft, translateTransition);
parallel.setOnFinished(evt -> {
cardPane.getItems().remove(card.getText());
initX = 0;
});
parallel.play();
}
}
});
}
private void addCard(String newCard){
cardPane.getItems().add(newCard);
cardPane.layout();
VirtualFlow vf = (VirtualFlow) cardPane.lookup(".virtual-flow");
IndexedCell cell = vf.getCell(cardPane.getItems().size() - 1);
cell.setTranslateX(0);
cell.setOpacity(0);
if (! cardPane.lookup(".scroll-bar").isVisible()) {
FadeInUpTransition f = new FadeInUpTransition(cell, true);
f.setRate(2);
f.play();
} else {
PauseTransition p = new PauseTransition(Duration.millis(20));
p.setOnFinished(e -> {
vf.show(cardPane.getItems().size() - 1);
FadeInTransition f = new FadeInTransition(cell);
f.setRate(2);
f.play();
});
p.play();
}
}
#Override
protected void updateAppBar(AppBar appBar) {
appBar.setNavIcon(MaterialDesignIcon.MENU.button(e -> System.out.println("Menu")));
appBar.setTitleText("Basic View");
appBar.getActionItems().add(MaterialDesignIcon.ADD.button(e -> addCard("Hello #" + new Random().nextInt(100))));
}
}
I have created the module for loading database record with id=1,2,3,4,5,... by getting the position of the viewPage Swiped as position index +1 . It has been implemented in OnPageChangeListener onPageSelected method. When it comes to the testing, it shows that the index shows zero at the beginning as 0,2,3,4 instead of index 1,2,3,4 ..to load the record. When I swipe right , it loads another same record instead of none, even setting setOffscreenPageLimit as zero. I don't want this to happen
Would you please tell me the alternative to read the position of the viewPager page ?
The below is my working :
mViewPager = (CustomViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager.setEnabled(true);
mViewPager.setOffscreenPageLimit(0);
mViewPager.setOnPageChangeListener(viewPagerPageChangeListener);
mViewPager.setCurrentItem(0);
OnPageChangeListener viewPagerPageChangeListener = new OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
pageId = position + 1;
overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
final Animation animationFadeIn = AnimationUtils.loadAnimation(FlightBankActivity.this, R.anim.fade_in);
for (int i = 0; i < dotsCount; i++) {
dots[i].setImageResource(R.drawable.dot_e);
}
dots[position].setAnimation(animationFadeIn);
dots[position].setImageResource(R.drawable.dot_s);
}
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
ArrayList<FlightProfile> fpList = (ArrayList<FlightProfile>) DatabaseManager.getInstance().getAllFlightProfile();
System.out.println(fpList.size() + " : is the size of profile");
for(FlightProfile gfg : fpList){
System.out.println(gfg.getId()+ " is the profile id");
System.out.println(gfg.getName()+ " is the profile i]name");
}
System.out.println(pageId+ " : is the pageId");
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
};
Fragment.java
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Bundle bundle=getArguments();
final int type = bundle.getInt("type");
System.out.println("type :" + type);
fp = DatabaseManager.getInstance().getFlightProfile(pageId);
...