我的数组是未定义的Angular2

Question

我想在我的数组中放入10个数字，但是我得到了未定义的

public class EDMTKeyboard extends InputMethodService implements KeyboardView.OnKeyboardActionListener {

private KeyboardView kv;
private Keyboard keyboard;

private  boolean isCaps = false;

@Override
public View onCreateInputView() {
    kv = (KeyboardView)getLayoutInflater().inflate(R.layout.keyboard,null);
    keyboard = new Keyboard(this,R.xml.qwerty);
    kv.setKeyboard(keyboard);
    kv.setOnKeyboardActionListener(this);
    return kv;
}

@Override
public void onPress(int i) {

}

@Override
public void onRelease(int i) {

}

@Override
public void onKey(int i, int[] ints) {

    InputConnection ic = getCurrentInputConnection();
    playClick(i);
    switch (i)
    {
        case Keyboard.KEYCODE_DELETE:
            ic.deleteSurroundingText(1,0);
        break;
        case Keyboard.KEYCODE_SHIFT:
            isCaps = !isCaps;
            keyboard.setShifted(isCaps);
            kv.invalidateAllKeys();
            break;
        case Keyboard.KEYCODE_DONE:
            //ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN,KeyEvent.KEYCODE_ENTER));
            break;
            default:
                char code = (char)i;
                if(Character.isLetter(code) && isCaps)
                    code = Character.toUpperCase(code);
                ic.commitText(String.valueOf(code),1);
    }

}

private void playClick(int i) {

    AudioManager am = (AudioManager)getSystemService(AUDIO_SERVICE);
    switch(i)
    {
        case 32:
            am.playSoundEffect(AudioManager.FX_KEYPRESS_SPACEBAR);
            break;
        case Keyboard.KEYCODE_DONE:
        case 10:
            am.playSoundEffect(AudioManager.FX_KEYPRESS_RETURN);
            break;
        case Keyboard.KEYCODE_DELETE:
            am.playSoundEffect(AudioManager.FX_KEYPRESS_DELETE);
            break;
        default: am.playSoundEffect(AudioManager.FX_KEYPRESS_STANDARD);
    }
}

@Override
public void onText(CharSequence charSequence) {

}

@Override
public void swipeLeft() {

}

@Override
public void swipeRight() {

}

@Override
public void swipeDown() {

}

@Override
public void swipeUp() {

}

我用（0）或（10）向arrayDrag声明，当我的事件是调用（rowDragEnd）时，我得到错误＆＃34; undefined＆＃34; public arrayDrag: number[]; ngOnInit() { this.arrayDrag = new Array(); //or this.arrayDrag = new Array(10) } rowDragEnd(event) { let max = 0; this.arrayDrag = new Array(); //or this.arrayDrag = new Array(10) this.gridApi.forEachNodeAfterFilterAndSort(function(node) { if (max < 10) { this.arrayDrag.push(node.data.point); console.log('add', node.data.point); max += 1; } }); }

Answer 1

您需要使用箭头功能来维护组件的范围。

navigationController?.popViewController(animated: true)

dismiss(animated: true, completion: nil)

在您发布的代码中，您使用的是this.gridApi.forEachNodeAfterFilterAndSort((node) => { if (max < 10) { this.arrayDrag.push(node.data.point); console.log('add', node.data.point); max += 1; } }); ，因此function指的是功能，而不是您的组件。