Question

我正在使用引用https://github.com/ApmeM/android-flowlayout的流布局。现在我在这个布局上创建多个动态按钮并在它们上设置ontouchlistener。问题是当我通过触摸改变一个按钮的位置时，其他按钮也正在改变那里的位置。我想改变我所触摸的唯一按钮的位置。有没有办法做到这一点或其他解决方案。

public class MainActivity extends AppCompatActivity implements    View.OnTouchListener {
          Button floatButton;
        Button _view;
        private int _xDelta;
        private int _yDelta;
        ViewGroup layout;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main2);
            Toolbar toolbar = (Toolbar) this.findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);
            layout = (ViewGroup) findViewById(R.id.flowLayout);
            RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT
                    , ViewGroup.LayoutParams.WRAP_CONTENT);
            layoutParams.leftMargin = 50;
            layoutParams.topMargin = 50;
            layoutParams.bottomMargin = 0;
            layoutParams.rightMargin = 0;
            for (int i = 0; i < 10; i++) {
                _view = new Button(this);
                _view.setText("Button"+(i+1));
                _view.setLayoutParams(layoutParams);
               _view.setOnTouchListener(this);
                layout.addView(_view);
            }
        }
        public boolean onTouch(View view, MotionEvent event) {
            final int X = (int) event.getRawX();
            final int Y = (int) event.getRawY();
            try {
                switch (event.getAction() & MotionEvent.ACTION_MASK) {
                    case MotionEvent.ACTION_DOWN:

                        FlowLayout.LayoutParams lParams = (FlowLayout.LayoutParams) view.getLayoutParams();
                        _xDelta = X - lParams.leftMargin;
                        _yDelta = Y - lParams.topMargin;
                        break;
                    case MotionEvent.ACTION_UP:
                        break;
                    case MotionEvent.ACTION_POINTER_DOWN:
                        break;
                    case MotionEvent.ACTION_POINTER_UP:
                        break;
                    case MotionEvent.ACTION_MOVE:
                        FlowLayout.LayoutParams layoutParams = (FlowLayout.LayoutParams) view.getLayoutParams();
                        layoutParams.leftMargin = X - _xDelta;
                        layoutParams.topMargin = Y - _yDelta;
                        layoutParams.rightMargin = 0;
                        layoutParams.bottomMargin = 0;
                        view.setLayoutParams(layoutParams);
                        break;
                }
            }catch (Exception ex){
                Log.d("ON Touch ", ex.toString());
            }
            layout.invalidate();
            return true;
        }
    }

Answer 1

这种情况发生的可能性很大，因为您正在使用RelativeLayout，并且其他对象位置以某种方式相对于您正在移动的按钮进行了定义。如果是这种情况，那么您所描述的行为是预期的。但我们需要查看XML文件以确切知道发生了什么。

使用流布局在多个动态按钮上设置ontouchlistener

1 个答案: