Question

我正在测试多点触控

我希望在拖动视图时使用RotationY旋转视图。一触即发，我用getRawX解决了它。但是，当视图旋转时，我无法在多点触控中获得getRawX（其他pinters）值。所以我使用了“MotionEvent.transForm（view.getMatrix（））”。这似乎有效。但是，在RotationY（90）中存在坐标问题。

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   View single_touch, multi_touch;

float single_preX;
boolean isSingleStating = false;

float multi_preX1,multi_preX2;
boolean isMultiStating = false;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    single_touch = findViewById(R.id.single_touch);
    single_touch.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            switch(event.getAction() & MotionEvent.ACTION_MASK) {
                case MotionEvent.ACTION_MOVE:
                    if(isSingleStating){
                        float deltaX = event.getRawX() - single_preX;
                        single_touch.setRotationY(single_touch.getRotationY()+(int)(deltaX/3));
                    }
                    single_preX = event.getRawX();
                    isSingleStating = true;
                    break;
                case MotionEvent.ACTION_UP:
                    single_preX = 0f;
                    isSingleStating = false;

            }
            return true;
        }
    });


    multi_touch = findViewById(R.id.multi_touch);
    multi_touch.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            switch(event.getAction() & MotionEvent.ACTION_MASK) {
                case MotionEvent.ACTION_MOVE:
                    if(event.getPointerCount()!=2){
                        return false;
                    }
                    event.transform(multi_touch.getMatrix());
                    if(isMultiStating){
                        float deltaX = ((event.getX(0) - multi_preX1) + (event.getX(1) - multi_preX2))/2f;
                        multi_touch.setRotationY(multi_touch.getRotationY()+(int)(deltaX/3));

                    }
                    multi_preX1 = event.getX(0);
                    multi_preX2 = event.getX(1);
                    isMultiStating = true;
                    break;
                case MotionEvent.ACTION_UP:
                    multi_preX1 = 0f;
                    multi_preX2 = 0f;
                    isMultiStating = false;
            }
            return true;
        }
    });
}

谁能解决这个问题？
如果您解决了这个问题，请与我联系电子邮件：markjmind@gmail.com

如果视图是RotationY（90），则MotionEvent.getX（int）对onTouchEvent不起作用

0 个答案: