Question

我正在尝试暂停我的程序并一直在使用Thread.Sleep（）。在阅读了这个问题后，我试图实现一个Swing Timer。但是，似乎Swing计时器触发了ActionEvents ...我只想暂停程序执行并在以下内容之间进行JLabel更改

mPlayerLastRollLabel.setText("Player rolled: ...");

//PAUSE

mPlayerLastRollLabel.setText("Player rolled: " + mFaceNumber);

如何在下面的情况下使用计时器暂停我标记它的程序：

class ClickListener implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            if (mPlayerTurn && event.getSource() == playerRollButton) {
                mFaceNumber = rollDie();
                mPlayerLastRollLabel.setText("Player rolled: ...");

                **// want to pause here //**

                mPlayerLastRollLabel.setText("Player rolled: " + mFaceNumber);

                if (mFaceNumber != 1) {
                    mSubTotal += mFaceNumber;
                    mPlayerSubtotalLabel.setText("Player's current subtotal: " + mSubTotal);
                }
                else {
                    mSubTotal = 0;
                    mPlayerSubtotalLabel.setText("Player's current subtotal: " + mSubTotal);
                    mPlayerTurn = false;
                    mComputerTurn = true;
                }
            }

            if (mPlayerTurn && event.getSource() == playerEndTurnButton) {
                mPlayerTotalScore += mSubTotal;
                mPlayerCurrentTotalScoreLabel.setText("Player's current total score: " + mPlayerTotalScore);
                mSubTotal = 0;
                System.out.println(mPlayerTotalScore);
                mPlayerTurn = false;
                mComputerTurn = true;
            }

            if (mComputerTurn && event.getSource() == computerRollButton) {
                mFaceNumber = rollDie();

                mComputerLastRollLabel.setText("Computer rolled: " + mFaceNumber);

                if (mFaceNumber != 1)
                    mSubTotal += mFaceNumber;
                else {
                    mSubTotal = 0;
                    mPlayerTurn = true;
                    mComputerTurn = false;
                }
            }

            if (mComputerTurn && event.getSource() == computerEndTurnButton) {
                mComputerTotalScore += mSubTotal;
                mSubTotal = 0;
                System.out.println(mComputerTotalScore);
                mPlayerTurn = true;
                mComputerTurn = false;
            }


        }
    }

Answer 1

这是因为swing定时器是异步的。因此，您必须将代码的第二行（以及所有后续逻辑）放入动作侦听器中，如：

@Component({
  selector: 'my-app',
  template: `

     <button (click)="addComponents()">Add HTML (dynamically using CRF)</button>

     <h1>Angular2 AppComponent</h1>
     <hr>

     <div>
     <h5>sub1.html goes here</h5>
      <div class="container">
        <template #subContainer1></template>
      </div>
     </div>

     <hr>
     <h5>sub2.html goes here</h5>
     <div class="container">
        <template #subContainer2></template>
     </div>
  `,

})
export class App {
    name:string;
    @ViewChild('subContainer1', {read: ViewContainerRef}) subContainer1: ViewContainerRef;
    @ViewChild('subContainer2', {read: ViewContainerRef}) subContainer2: ViewContainerRef;
    constructor(
      private compFactoryResolver: ComponentFactoryResolver
      ) {
      this.name = 'Angular2'
    }

    addComponents() {

      let compFactory: ComponentFactory;

      compFactory = this.compFactoryResolver.resolveComponentFactory(Part1Component);
      this.subContainer1.createComponent(compFactory);


      compFactory = this.compFactoryResolver.resolveComponentFactory(Part2Component);
      this.subContainer2.createComponent(compFactory);
    }
  }
}

或者你可以将睡眠后的下半部分放入单独的函数中并从actionPerfomed方法调用它。这样做而不是Thread.sleep你释放图形线程（这是所有UI的一个），直到你的睡眠时间到了。如果不释放图形线程，那么你的UI就会冻结，因为没有线程可以对用户操作作出反应。

尝试在if语句中暂停程序执行（Swing）

1 个答案: