Question

代码：

 maxIndex = alItemListDetails.size();
    linItemTags = (LinearLayout) findViewById(R.id.linItemTags);
    final ImageView image = new ImageView(this);
    for (int i = 0; i < maxIndex; i++) {
        image.setLayoutParams(new android.view.ViewGroup.LayoutParams(80, 60));
        image.setMaxHeight(20);
        image.setMaxWidth(20);
        image.setTag(i);
        image.setImageResource(R.drawable.box);
        // Adds the view to the layout
        linItemTags.addView(image);
    }
    image.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Common.displayToast(ItemDetailsActivity.this, "" + image.getTag());
        }
    });

从上面的代码中，您可以看到我已动态生成了imageview并尝试处理该Imageview的点击事件。

但是，它给我的错误如下：

Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

Answer 1

引起：java.lang.IllegalStateException：指定的子级已经有了父母。您必须在孩子的父母上调用removeView（）第一

因为在ImageView版面中添加了相同的image对象linItemTags，所以

在for循环中创建image对象：

for (int i = 0; i < maxIndex; i++) {
        ImageView image = new ImageView(this); //<< create here
        ....
        linItemTags.addView(image);
    }

Answer 2

try this

maxIndex = alItemListDetails.size();
    linItemTags = (LinearLayout) findViewById(R.id.linItemTags);

    for (int i = 0; i < maxIndex; i++) {
     ImageView image = new ImageView(this);
        image.setLayoutParams(new android.view.ViewGroup.LayoutParams(80, 60));
        image.setMaxHeight(20);
        image.setMaxWidth(20);
        image.setTag(i);
        image.setImageResource(R.drawable.box);
        // Adds the view to the layout
        linItemTags.addView(image);
        image.setOnClickListener(new ImageClickLIstener(i));

    }

    class ImageClickLIstener implements OnClickListener
    {
    int position;
    ImageClickLIstener()
    {
    this.position= position;
    }

        @Override
        public void onClick(View v) {
            Common.displayToast(ItemDetailsActivity.this, "" + position);
        }
    }

处理动态添加的ImageView的Click事件

2 个答案: