调用 removeAllViews();仍然导致 IllegalStateException:You 必须先在 child 的 parent 上调用 removeView()
Calling removeAllViews(); still results in IllegalStateException:You must call removeView() on the child's parent first
我不确定为什么会这样,但我收到一条错误消息:调用 layout.removeAllViews();
仍然会导致 IllegalStateException: The specified child already has a parent.
您必须在 child 上调用 removeView()先是parent.
奇怪的是我调用了:removeAllViews();在添加新的之前:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.download);
...
ImageView imageViewz = (ImageView) findViewById(R.id.imageView6);
Picasso.with(context).load(background).into(imageViewz);
LinearLayout layout = new LinearLayout(Download.this);
layout.setId(R.id.download);
LayoutParams layoutParams
= new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
layout.setLayoutParams(layoutParams);
layout.setOrientation(LinearLayout.VERTICAL);
LayoutParams imageViewLayoutParams
= new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
imageViewz.setLayoutParams(imageViewLayoutParams);
layout.removeAllViews();
layout.addView(imageViewz);
setContentView(layout);
但我仍然遇到致命错误...所以我不确定为什么会发生这种情况。
如有任何建议,我们将不胜感激。
您的问题不在于 layout
。您的问题出在 imageViewz
。它已经有一个父级,这就是触发您的异常的原因。在将其添加到 layout
.
之前,您需要从其当前父项中删除 imageViewz
我不确定为什么会这样,但我收到一条错误消息:调用 layout.removeAllViews();
仍然会导致 IllegalStateException: The specified child already has a parent.
您必须在 child 上调用 removeView()先是parent.
奇怪的是我调用了:removeAllViews();在添加新的之前:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.download);
...
ImageView imageViewz = (ImageView) findViewById(R.id.imageView6);
Picasso.with(context).load(background).into(imageViewz);
LinearLayout layout = new LinearLayout(Download.this);
layout.setId(R.id.download);
LayoutParams layoutParams
= new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
layout.setLayoutParams(layoutParams);
layout.setOrientation(LinearLayout.VERTICAL);
LayoutParams imageViewLayoutParams
= new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
imageViewz.setLayoutParams(imageViewLayoutParams);
layout.removeAllViews();
layout.addView(imageViewz);
setContentView(layout);
但我仍然遇到致命错误...所以我不确定为什么会发生这种情况。
如有任何建议,我们将不胜感激。
您的问题不在于 layout
。您的问题出在 imageViewz
。它已经有一个父级,这就是触发您的异常的原因。在将其添加到 layout
.
imageViewz