出于某种原因,我一直收到以下错误:
java.lang.IllegalStateException:指定的子级已有父级。您必须在子视图的父视图上调用removeView()
我使用以下代码:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listitem);
//url is fetched from another class
readWebpage(imdbUrl);
}
private class DownloadWebPageTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
}
@Override
protected void onPostExecute(String result) {
//textView.setText(result);
displayMoviesList(result);
}
}
public void readWebpage(String imdbUrl) {
}
public void displayMoviesList(String result) {
JSONObject responseObj = null;
try {
responseObj = new JSONObject(result);
JSONObject Obj = responseObj.getJSONObject("results");
JSONArray moviesListObj = Obj.getJSONArray("result");
for(int i=0 ;i<moviesListObj.length();i++) {
JSONObject e = moviesListObj.getJSONObject(i);
cover[i] = e.getString("cover");
title[i] = e.getString("title");
year[i] = e.getString("year");
director[i] = e.getString("director");
rating[i] = e.getString("rating");
details[i] = e.getString("details");
}
tl = (TableLayout) findViewById(R.id.main_table);
imgView = (ImageView)findViewById(R.id.imageID);
progressbar = (ProgressBar) findViewById(R.id.loadingBar);
//new loadImageTask().execute(cover[i].toString());
new loadImageTask().execute( URL);// it calls another function..
TextView title = (TextView)findViewById(R.id.titleID);
title.setText("TEXT");
TableRow tr = new TableRow(this);
tr.addView(imgView);
tr.addView(title);
tl.addView(tr, new TableLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
} catch(JSONException e) {
//Log.e("log_tag", "Error parsing data " + e.toString());
}
我不确定为什么我收到错误,但是在我将其添加到视图时似乎正在生成。
答案 0 :(得分:0)
解决方案是我们要么在.xml文件中定义行,要么在.java文件中定义行。我在我的java文件中动态添加行并使用addView。所以在.xml文件中我们无法添加另一个视图(我们不应该添加相同的行)。