本文介绍了IllegalStateException异常中的AsyncTask的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个AsyncTask的。
I have an AsyncTask.
protected class InitTask extends AsyncTask<Context, Integer, String> {
View eachLayout;
@Override
protected String doInBackground(Context... params) {
try {
myfunction();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
}
/*
* (non-Javadoc)
*
* @see android.os.AsyncTask#onPreExecute()
*/
@Override
protected void onPreExecute() {
super.onPreExecute();
linearLayout.invalidate();
}
@Override
protected void onProgressUpdate(Integer... values) {
super.onProgressUpdate(values);
linearLayout.addView(eachLayout, params);
linearLayout.invalidate();
}
/*
* (non-Javadoc)
*
* @see android.os.AsyncTask#onCancelled()
*/
@Override
protected void onCancelled() {
super.onCancelled();
}
public void redrawLayout(View linearLayout) {
try {
eachLayout = linearLayout;
publishProgress();
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void myFunction() {
LayoutInflater layoutInflater = (LayoutInflater) this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
params = new LinearLayout.LayoutParams(
newLinearLayout.getLayoutParams().width,
newLinearLayout.getLayoutParams().height);
for (int i = 0; i < list.size(); i++) {
final View eachLayout = layoutInflater.inflate(R.layout.sample, null);
//..........................
eachLayout.invalidate();
initTask.redrawLayout(eachLayout);
}
}
params = new LinearLayout.LayoutParams(
linearLayout.getLayoutParams().width,
linearLayout.getLayoutParams().height);
它显示的 IllegalStateException异常是在这条线
linearLayout.addView（eachLayout，则params）; （这个孩子已经有一个父）。
It shows IllegalStateException at this line linearLayout.addView(eachLayout, params); .(This child already has a parent).
我试过linearLayout.removeAllViews（）等等...但它不工作。
I am tried linearLayout.removeAllViews() etc...But it does not work.
如何解决此问题？
由于提前
推荐答案
尝试以下操作：
@Override
protected void onProgressUpdate(Integer... values) {
super.onProgressUpdate(values);
if( ((LinearLayout) eachLayout.getParent()) != null
&& eachLayout != null) {
((LinearLayout) eachLayout.getParent()).removeView(eachLayout);
}
linearLayout.addView(eachLayout, params);
linearLayout.invalidate();
}
这篇关于IllegalStateException异常中的AsyncTask的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！