Java Android中的拖放:如何获取拖放视图的新位置
嗨,我有一个简单的拖放活动。看起来是这样的:Java Android中的拖放:如何获取拖放视图的新位置,java,android,drag-and-drop,draggable,Java,Android,Drag And Drop,Draggable,嗨,我有一个简单的拖放活动。看起来是这样的: public class Test extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_test); findViewById(R.id.myimage1).setOnTouc
public class Test extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
findViewById(R.id.myimage1).setOnTouchListener(new MyTouchListener());
findViewById(R.id.myimage2).setOnTouchListener(new MyTouchListener());
findViewById(R.id.myimage3).setOnTouchListener(new MyTouchListener());
findViewById(R.id.myimage4).setOnTouchListener(new MyTouchListener());
findViewById(R.id.one).setOnDragListener(new MyDragListener());
findViewById(R.id.two).setOnDragListener(new MyDragListener());
findViewById(R.id.three).setOnDragListener(new MyDragListener());
findViewById(R.id.four).setOnDragListener(new MyDragListener());
}
//TEST DRAG AND DROP
private final class MyTouchListener implements View.OnTouchListener {
public boolean onTouch(View view, MotionEvent motionEvent) {
if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
ClipData data = ClipData.newPlainText("", "");
View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(view);
view.startDrag(data, shadowBuilder, view, 0);
view.setVisibility(View.INVISIBLE);
return true;
} else {
return false;
}
}
}
class MyDragListener implements View.OnDragListener {
Drawable enterShape = getResources().getDrawable(R.drawable.shape_droptarget);
Drawable normalShape = getResources().getDrawable(R.drawable.shape);
@Override
public boolean onDrag(View v, DragEvent event) {
int action = event.getAction();
switch (event.getAction()) {
case DragEvent.ACTION_DRAG_STARTED:
// do nothing
break;
case DragEvent.ACTION_DRAG_ENTERED:
v.setBackgroundDrawable(enterShape);
break;
case DragEvent.ACTION_DRAG_EXITED:
v.setBackgroundDrawable(normalShape);
break;
case DragEvent.ACTION_DROP:
// Dropped, reassign View to ViewGroup
View view = (View) event.getLocalState();
ViewGroup owner = (ViewGroup) view.getParent();
owner.removeView(view);
LinearLayout container = (LinearLayout) v;
container.addView(view);
view.setVisibility(View.VISIBLE);
break;
case DragEvent.ACTION_DRAG_ENDED:
v.setBackgroundDrawable(normalShape);
default:
break;
}
return true;
}
}
}
现在我想知道视图onClick的新位置。我需要一个int。它可能是这样的:如果图片1在布局1中,int是:“11”,如果图片2在布局3中,int是“23”。我需要所有4张图片的位置,所以我需要4 int
但是我不知道如何得到这个新职位。我感谢你的帮助 当触发
onClick
时,只需调用以下命令即可获取子视图位置:
然后,通过为每个小部件的图像添加特定的标记。您可以将int构造为imageTag+position
,例如:
@Override
public void onClick(View v) {
String imageTag = v.getTag();
int position = parentContainer.indexOfChild(v);
int resultValue = Integer.parseInt(imageTag) + position;
}
我已经得到了答案。我只需要检查当前的拖动视图和布局。然后我只需要一些if函数,就这样,谢谢:)然后,@PatrickCzerwinski发布你自己的答案。也许我的不适合你的需要。你可以发布你自己的并接受它,没有什么不好的;)
@Override
public void onClick(View v) {
String imageTag = v.getTag();
int position = parentContainer.indexOfChild(v);
int resultValue = Integer.parseInt(imageTag) + position;
}