On Touch Listener 与相对布局重叠

Question

我有两个ImageButton，我想为它们设置相同的OnTouchListener ，但问题是重叠的，当我触摸一个图像时，另一个相邻的图像也在移动。 当我触摸图像 2 时，它正在移出屏幕并变得不可见。我希望它保留在屏幕上，并且触摸事件应该为它们单独工作。

这是我到现在为止所做的。

    //this is the snippet from main activity where the onTouch is implemented and layout is created       

    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
    params.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE);
    imgMaster.setLayoutParams(params);
    params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
    params.addRule(RelativeLayout.RIGHT_OF, imgMaster.getId());
    imgMaster.setOnTouchListener(new ChoiceTouchListener());
    imgMood.setOnTouchListener(new ChoiceTouchListener());
    imgMood.setLayoutParams(params);
    imgMaster.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(getApplicationContext(), "Clicked Master", Toast.LENGTH_SHORT).show();
        }
    });
    imgMood.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(getApplicationContext(), "Clicked Mood", Toast.LENGTH_SHORT).show();
        }
    });
}

private final class ChoiceTouchListener implements OnTouchListener {
    public boolean onTouch(View view, MotionEvent event) {
        //ImageButton views = (ImageButton) view;
        final int X = (int) event.getRawX();
        final int Y = (int) event.getRawY();
        switch (view.getId()) {
            case R.id.master: 
                switch (event.getAction() & MotionEvent.ACTION_MASK) {
                    case MotionEvent.ACTION_DOWN:
                        RelativeLayout.LayoutParams lparams = (RelativeLayout.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:
                        RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) view.getLayoutParams();
                        layoutParams.leftMargin = X - _xDelta;
                        layoutParams.topMargin = Y - _yDelta;
                        layoutParams.rightMargin = -250;
                        layoutParams.bottomMargin = -250;
                        view.setLayoutParams(layoutParams);
                        break;
                }
            case R.id.mood:
                switch (event.getAction() & MotionEvent.ACTION_MASK) {
                    case MotionEvent.ACTION_DOWN:
                        RelativeLayout.LayoutParams lparams = (RelativeLayout.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:
                        RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) view.getLayoutParams();
                        layoutParams.leftMargin = X - _xDelta;
                        layoutParams.topMargin = Y - _yDelta;
                        layoutParams.rightMargin = -250;
                        layoutParams.bottomMargin = -250;
                        view.setLayoutParams(layoutParams);
                        break;
                }
                break;
        }

       
        return false;

    }

}

//这是我的布局

<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/view_root"
android:background="@drawable/transparent_background"
xmlns:android="http://schemas.android.com/apk/res/android">
<ImageButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/mood"
    android:src="@drawable/mood"

    android:background="@null"/>

<ImageButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/master"
    android:src="@drawable/master"
    android:background="@null" /></RelativeLayout>

提前致谢。

Answer 1

正如你所要求的代码，在这里，但我仍然不知道你想从你的对象做什么样的实际运动。

我提供的代码可以让您将两个对象拖到屏幕上的任意位置，而无需同时移动另一个对象。

希望这是您想要的（至少可能更接近）

注意：请删除所有RelativeLayout.addRule()等，只需将onTouch监听器设置为您的ImageButtons，以下是Ontouch的定义

private final class ChoiceTouchListener implements View.OnTouchListener {
        public boolean onTouch(View view, MotionEvent event) {
            final int X = (int) event.getRawX();
            final int Y = (int) event.getRawY();

            switch (view.getId()) {
                case R.id.master:
                    switch (event.getAction() & MotionEvent.ACTION_MASK) {
                        case MotionEvent.ACTION_DOWN:
                            break;
                        case MotionEvent.ACTION_UP:
                            break;
                        case MotionEvent.ACTION_POINTER_DOWN:
                            break;
                        case MotionEvent.ACTION_POINTER_UP:
                            break;
                        case MotionEvent.ACTION_MOVE:
                            view.setX(X-view.getWidth()/2);
                            view.setY(Y-view.getHeight());
                            break;
                    }
                case R.id.mood:
                    switch (event.getAction() & MotionEvent.ACTION_MASK) {
                        case MotionEvent.ACTION_DOWN:
                            break;
                        case MotionEvent.ACTION_UP:
                            break;
                        case MotionEvent.ACTION_POINTER_DOWN:
                            break;
                        case MotionEvent.ACTION_POINTER_UP:
                            break;
                        case MotionEvent.ACTION_MOVE:
                            view.setX(X-view.getWidth()/2);
                            view.setY(Y-view.getHeight());
                            break;
                    }
                    break;
            }
                return false;

        }

这应该是您在 XML 中的布局

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/view_root"
    android:background="@drawable/transparent_background"
    xmlns:android="http://schemas.android.com/apk/res/android">

    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/master"
        android:src="@drawable/master"
        android:background="@null"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/mood"
        android:src="@drawable/mood"
        android:background="@null"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/master"
        android:layout_toEndOf="@+id/master" />
</RelativeLayout>