在imageview JavaFx上显示图像

时间:2015-10-24 19:30:33

标签: java image netbeans javafx imageview

我有一个.fxml文件,里面有一些空矩形

<AnchorPane id="AnchorPane" prefHeight="700.0" prefWidth="650.0"     styleClass="fondo2" stylesheets="@tablerolote.css"     xmlns="http://javafx.com/javafx/8.0.40" xmlns:fx="http://javafx.com/fxml/1"     fx:controller="juegoloto.CartonController">


    <children>
          <GridPane gridLinesVisible="true" layoutX="11.0" layoutY="44.0"     prefHeight="614.0" prefWidth="474.0" styleClass="fondo">
            <columnConstraints>
            <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0"    />    
             <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0"     prefWidth="100.0" />
                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0"     prefWidth="100.0" />
                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0"     prefWidth="100.0" />
               <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0"     prefWidth="100.0" />
            </columnConstraints>
        <rowConstraints>
          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
        </rowConstraints>
         <children>
            <ImageView id="1" fitHeight="127.0" fitWidth="93.0" pickOnBounds="true" preserveRatio="true" />
            <ImageView id="2" fitHeight="127.0" fitWidth="96.0" pickOnBounds="true" preserveRatio="true" GridPane.columnIndex="1" />
            <ImageView id="3" fitHeight="126.0" fitWidth="96.0" pickOnBounds="true" preserveRatio="true" GridPane.columnIndex="2" />
            <ImageView id="4" fitHeight="127.0" fitWidth="97.0" pickOnBounds="true" preserveRatio="true" GridPane.columnIndex="3" />

         </children>
      </GridPane>

   </children>
</AnchorPane>

它是使用netbeans(拖放界面)自动创建的,我如何发送和图像显示在ImageView id="2" /ImageView id="3"等。来自.java文件

public void start(Stage stage) throws Exception {
    Parent root = FXMLLoader.load(getClass().getResource("Carton.fxml"));

    Scene scene = new Scene(root);


    stage.setScene(scene);
    stage.show();
}

我也有一个controller.java文件,但我不知道该怎么做

public class CartonController implements Initializable {

@FXML
private Label label;

@FXML


@Override
public void initialize(URL url, ResourceBundle rb) {
    // TODO
}    

}

2 个答案:

答案 0 :(得分:2)

您应该在控制器类中执行此操作。 FXML reference中详细描述了如何使用控制器,但简而言之:

fx:id上添加ImageView(您可以在SceneBuilder中执行此操作):

<AnchorPane id="AnchorPane" prefHeight="700.0" prefWidth="650.0"     styleClass="fondo2" stylesheets="@tablerolote.css"     xmlns="http://javafx.com/javafx/8.0.40" xmlns:fx="http://javafx.com/fxml/1"     fx:controller="juegoloto.CartonController">


    <children>
          <GridPane gridLinesVisible="true" layoutX="11.0" layoutY="44.0"     prefHeight="614.0" prefWidth="474.0" styleClass="fondo">
            <columnConstraints>
            <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0"    />    
             <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0"     prefWidth="100.0" />
                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0"     prefWidth="100.0" />
                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0"     prefWidth="100.0" />
               <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0"     prefWidth="100.0" />
            </columnConstraints>
        <rowConstraints>
          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
        </rowConstraints>
         <children>
            <ImageView id="1" fx:id="imageView1" fitHeight="127.0" fitWidth="93.0" pickOnBounds="true" preserveRatio="true" />
            <ImageView id="2" fx:id="imageView2" fitHeight="127.0" fitWidth="96.0" pickOnBounds="true" preserveRatio="true" GridPane.columnIndex="1" />
            <ImageView id="3" fx:id="imageView3" fitHeight="126.0" fitWidth="96.0" pickOnBounds="true" preserveRatio="true" GridPane.columnIndex="2" />
            <ImageView id="4"  fx:id="imageView4" fitHeight="127.0" fitWidth="97.0" pickOnBounds="true" preserveRatio="true" GridPane.columnIndex="3" />

         </children>
      </GridPane>

   </children>
</AnchorPane>

然后将它们注入您的控制器,您可以根据需要访问它们:

public class CartonController implements Initializable {

@FXML
private ImageView imageView1 ;

@FXML
private ImageView imageView2 ;

@FXML
private ImageView imageView3 ;

@FXML
private ImageView imageView4 ;    

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        imageView1.setImage(new Image(...));
        // etc...
    }    

}

答案 1 :(得分:0)

您可以定义检索ImageView的方法:

public ImageView findById(AnchorPane root, String id) {
  for (Node child : root.getChildren()) {
    if (child instanceof ImageView && child.getId().equals(id)) {
      return (ImageView)child;
    }
  }
  return null;
}

此方法将遍历根AnchorPane的所有直接子节点,并检查ImageView节点的ID。如果未找到匹配的节点,则返回null。从那里,您可以在返回的setImage上使用ImageView方法。