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在 Android 中，拖拽一个图片（例如 ImageView）到另一个组件（如 LinearLayout、FrameLayout 等容器）涉及以下步骤：

1. 准备工作
   源组件：你从哪里开始拖动（如 ImageView）。
   目标组件：你想把图片拖到哪里（如 LinearLayout 或其他可接收拖放的容器）。

// 在 onCreate 或 onViewCreated 中设置
ImageView imageView = findViewById(R.id.image_view);
LinearLayout targetLayout = findViewById(R.id.target_container);// 设置长按开始拖拽
imageView.setOnLongClickListener(v -> {ClipData.Item item = new ClipData.Item((CharSequence) v.getTag());ClipData clipData = ClipData.newPlainText("image", "dragged_image");View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(imageView);if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {v.startDragAndDrop(clipData, shadowBuilder, imageView, 0);} else {v.startDrag(clipData, shadowBuilder, imageView, 0);}imageView.setVisibility(View.INVISIBLE); // 拖出后隐藏原图return true;
});// 设置目标区域的监听
targetLayout.setOnDragListener((v, event) -> {int action = event.getAction();switch (action) {case DragEvent.ACTION_DRAG_ENTERED:// 进入目标区域return true;case DragEvent.ACTION_DROP:// 放开操作View droppedView = (View) event.getLocalState();ViewGroup oldParent = (ViewGroup) droppedView.getParent();if (oldParent != null) {oldParent.removeView(droppedView);}// 添加到新容器((ViewGroup) v).addView(droppedView);droppedView.setVisibility(View.VISIBLE);return true;case DragEvent.ACTION_DRAG_EXITED:// 鼠标离开return true;case DragEvent.ACTION_DRAG_ENDED:// 拖拽结束return true;default:return true;}
});