Question

只是玩弄Angular，我无法让它发挥作用。当我设置我的ng-app =“”并且没有别的时候绑定工作。这是我的html文件：

var myApp = angular.module("myApp", []);

myApp.controller("myController", function($scope){
  $scope.names = ['a', 'b'];
});

我的app.js

SELECT
    s.sid,
    s.sname
FROM @StudentCourse sc
INNER JOIN @Student s
    ON s.sid = sc.sid
WHERE
    sc.cid IN(1, 2)
GROUP BY
    s.sid, s.sname
HAVING
    (
        SUM(CASE WHEN sc.cid = 1 THEN 1 ELSE 0 END) +
        SUM(CASE WHEN sc.cid = 2 THEN 1 ELSE 0 END)
    ) = 1

是的，js文件位于正确的位置并正确引用。我正在使用WebStorm。我一直在页面上看到{{x}}。而不是范围内的名称。

Answer 1

您的app.js应在有角度后链接：

 public class MainActivity extends AppCompatActivity {

//private ImageView imageView;
private TextView textView,textView1;
private ScaleGestureDetector scaleGestureDetector;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    textView = (TextView) findViewById(R.id.text_view);
    textView1 = (TextView) findViewById(R.id.text_view1);
  //  imageView = (ImageView) findViewById(R.id.ImageView01);
    scaleGestureDetector = new ScaleGestureDetector(this, new simpleOnScaleGestureListener());

    textView.setOnTouchListener(new View.OnTouchListener() {
        private int deltaX;
        private int deltaY;
        private float initialTouchX;
        private float initialTouchY;
        private boolean isMoved;
        private int lastTouchX;
        private int lastTouchY;

        @Override
        public boolean onTouch(final View v, final MotionEvent event) {

            ViewGroup vg = (ViewGroup) v.getParent();

            int draggedViewIndex = vg.indexOfChild(v);
            initialTouchX = event.getRawX();
            initialTouchY = event.getRawY();
            boolean result = v.onTouchEvent(event);
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN: {
                    isMoved = false;
                    FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) v
                            .getLayoutParams();

                    deltaX = (int) initialTouchX - params.leftMargin;
                    deltaY = (int) initialTouchY - params.topMargin;

                    lastTouchX = (int) initialTouchX;
                    lastTouchY = (int) initialTouchY;
                    Log.e("ashish", "ACTION_DOWN lasttouchX: " + lastTouchX);
                    Log.e("ashiosh", "ACTION_DOWN lasttouchY: " + lastTouchY);
                    new Handler().postDelayed(new Runnable() {

                        @Override
                        public void run() {
                            runOnUiThread(new Runnable() {

                                @Override
                                public void run() {
                                    if (!isMoved
                                            && event.getAction() != MotionEvent.ACTION_UP) {
                                        //perform LongClickOperation
                                    }
                                }
                            });
                        }
                    }, 1000);
                    break;
                }

                case MotionEvent.ACTION_MOVE: {
                    FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) v
                            .getLayoutParams();

                    params.leftMargin = (int) initialTouchX - deltaX;
                    params.topMargin = (int) initialTouchY - deltaY;

                    v.setLayoutParams(params);

                    break;
                }
                case MotionEvent.ACTION_UP: {

                    if ((lastTouchX == (int) initialTouchX)
                            && (lastTouchY == (int) initialTouchY)) {
                        isMoved = false;
                    } else if ((lastTouchX > (int) initialTouchX)) {
                        if (((lastTouchX - (int) initialTouchX) <= 10)) {
                            isMoved = false;
                        } else {
                            isMoved = true;
                        }
                    } else if ((lastTouchX < (int) initialTouchX)) {
                        if ((((int) initialTouchX - lastTouchX) <= 10)) {
                            isMoved = false;
                        } else {
                            isMoved = true;
                        }
                    } else if ((lastTouchY > (int) initialTouchY)) {
                        if (((lastTouchY - (int) initialTouchY) <= 10)) {
                            isMoved = false;
                        } else {
                            isMoved = true;
                        }
                    } else if ((lastTouchY < (int) initialTouchY)) {
                        if ((((int) initialTouchY - lastTouchY) <= 10)) {
                            isMoved = false;
                        } else {
                            isMoved = true;
                        }
                    } else {
                        isMoved = true;
                    }

                    if (!isMoved) {
                        //perform onClick operation
                    } else {
                        isMoved = false;
                    }
                    initialTouchX = 0;
                    initialTouchY = 0;
                    deltaX = 0;
                    deltaY = 0;
                    break;
                }
                default:
                    return result;
            }
            textView.invalidate();
            return true;
        }

    });

    textView1.setOnTouchListener(new View.OnTouchListener() {
        private int deltaX;
        private int deltaY;
        private float initialTouchX;
        private float initialTouchY;
        private boolean isMoved;
        private int lastTouchX;
        private int lastTouchY;

        @Override
        public boolean onTouch(final View v, final MotionEvent event) {

            ViewGroup vg = (ViewGroup) v.getParent();

            int draggedViewIndex = vg.indexOfChild(v);
            initialTouchX = event.getRawX();
            initialTouchY = event.getRawY();
            boolean result = v.onTouchEvent(event);
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN: {
                    isMoved = false;
                    FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) v
                            .getLayoutParams();

                    deltaX = (int) initialTouchX - params.leftMargin;
                    deltaY = (int) initialTouchY - params.topMargin;

                    lastTouchX = (int) initialTouchX;
                    lastTouchY = (int) initialTouchY;
                    Log.e("ashish", "ACTION_DOWN lasttouchX: " + lastTouchX);
                    Log.e("ashiosh", "ACTION_DOWN lasttouchY: " + lastTouchY);
                    new Handler().postDelayed(new Runnable() {

                        @Override
                        public void run() {
                            runOnUiThread(new Runnable() {

                                @Override
                                public void run() {
                                    if (!isMoved
                                            && event.getAction() != MotionEvent.ACTION_UP) {
                                        //perform LongClickOperation
                                    }
                                }
                            });
                        }
                    }, 1000);
                    break;
                }

                case MotionEvent.ACTION_MOVE: {
                    FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) v
                            .getLayoutParams();

                    params.leftMargin = (int) initialTouchX - deltaX;
                    params.topMargin = (int) initialTouchY - deltaY;

                    v.setLayoutParams(params);

                    break;
                }
                case MotionEvent.ACTION_UP: {

                    if ((lastTouchX == (int) initialTouchX)
                            && (lastTouchY == (int) initialTouchY)) {
                        isMoved = false;
                    } else if ((lastTouchX > (int) initialTouchX)) {
                        if (((lastTouchX - (int) initialTouchX) <= 10)) {
                            isMoved = false;
                        } else {
                            isMoved = true;
                        }
                    } else if ((lastTouchX < (int) initialTouchX)) {
                        if ((((int) initialTouchX - lastTouchX) <= 10)) {
                            isMoved = false;
                        } else {
                            isMoved = true;
                        }
                    } else if ((lastTouchY > (int) initialTouchY)) {
                        if (((lastTouchY - (int) initialTouchY) <= 10)) {
                            isMoved = false;
                        } else {
                            isMoved = true;
                        }
                    } else if ((lastTouchY < (int) initialTouchY)) {
                        if ((((int) initialTouchY - lastTouchY) <= 10)) {
                            isMoved = false;
                        } else {
                            isMoved = true;
                        }
                    } else {
                        isMoved = true;
                    }

                    if (!isMoved) {
                        //perform onClick operation
                    } else {
                        isMoved = false;
                    }
                    initialTouchX = 0;
                    initialTouchY = 0;
                    deltaX = 0;
                    deltaY = 0;
                    break;
                }
                default:
                    return result;
            }
            textView1.invalidate();
            return true;
        }

    });


}

@Override
public boolean onTouchEvent(MotionEvent event) {
    // TODO Auto-generated method stub
    scaleGestureDetector.onTouchEvent(event);
    return true;
}

public class simpleOnScaleGestureListener extends
        ScaleGestureDetector.SimpleOnScaleGestureListener {

    @Override
    public boolean onScale(ScaleGestureDetector detector) {
        // TODO Auto-generated method stub
        float size = textView.getTextSize();
        float size1 = textView1.getTextSize();
        Log.d("TextSizeStart", String.valueOf(size));

        float factor = detector.getScaleFactor();
        float factor1 = detector.getScaleFactor();
        Log.d("Factor", String.valueOf(factor));

        float product = size * factor;
        float product1 = size1 * factor1;
        Log.d("TextSize", String.valueOf(product));
        textView.setTextSize(TypedValue.COMPLEX_UNIT_PX, product);
        textView1.setTextSize(TypedValue.COMPLEX_UNIT_PX, product1);

        size = textView.getTextSize();
        size1 = textView1.getTextSize();
        Log.d("TextSizeEnd", String.valueOf(size));
        return true;
    }
}

@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) {
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
}

为什么这个简单的Angular代码不起作用？

1 个答案: