AsyncTask的进步不秒针轮纺纱？ [英] AsyncTask progress wheel not spining?
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问题描述
AsyncTask的做工精细，当我在做的拉链 解压 下载文件和存储数据从XML到数据库中
但现在我想实现 https://github.com/ fry15 / uk.co.jasonfry.android.tools 布局刷卡（数据来自数据库中选取并显示的WebView），这在运行时添加布局，它需要很长的时间，所以我可以把这个AsyncTask的，但现在的AsyncTask秒针轮进度不旋转？
我的code工作正常，但问题是没有在AsyncTask的纺车。
公共类LoadSlideAndQuestion扩展的AsyncTask＆LT;太虚，太虚，太虚＆GT; { ProgressDialog pDialog; 在preExecute保护无效（）{
pDialog =新ProgressDialog（DialogBoxOnClick.this）;
pDialog.setMessage（加载幻灯片和问题......）;
pDialog.setCancelable（假）;
pDialog.show（）; } 保护无效doInBackground（虚空......未使用）{ 意图I =新意图（DialogBoxOnClick.this，SlideScreen.class）;
startActivity（ⅰ）;
完（）;
回报（NULL）;
} @覆盖
保护无效onProgressUpdate（虚空......值）{
// TODO自动生成方法存根
super.onProgressUpdate（值）;
} 保护无效onPostExecute（虚空未使用）{
pDialog.dismiss（）;
}}
SlideActivity
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
requestWindowFeature（Window.FEATURE_NO_TITLE）;
的setContentView（R.layout.temp）;
显示显示= getWindowManager（）getDefaultDisplay（）。
宽度= display.getWidth（）;
话题= getIntent（）getSerializableExtra（名称）的toString（）。
fetchdata（）; 的PageControl mPageControl =（的PageControl）findViewById（R.id.page_control）;
mSwipeView =（SwipeView）findViewById（R.id.swipe_view）; mSwipeView.setPageControl（mPageControl）; 的for（int i = 0; I＆LT;最大;我++）{
mSwipeView.addView（新的FrameLayout（本））;
} 的for（int i = 0; I＆LT;最大;我++）{ （（的FrameLayout）mSwipeView.getChildContainer（）。getChildAt（I））
.addView（setupView函数（））;
算上++;
}
}
setupView函数（）函数返回的意见
公开查看setupView函数（）{ LayoutInflater layoutInflator = getLayoutInflater（）;
的LinearLayout childlayout =（的LinearLayout）layoutInflator.inflate（
R.layout.webview，自动开关机，FALSE）; QUESTION_NUMBER =（TextView中）childlayout
.findViewById（R.id.question_number）;
question_type =（TextView中）childlayout.findViewById（R.id.question_type）;
question_parameters =（TextView中）childlayout
.findViewById（R.id.question_parameter）;
question_correct_answer =（TextView中）childlayout
.findViewById（R.id.question_correct_answer）;
question_difficulty =（TextView中）childlayout
.findViewById（R.id.question_difficulty）;
NEWOBJECT =新Questionclass（）;
NEWOBJECT = XmlHandler.questionlist.get（计数）;
的System.out.println（newObject.QUESTION_NUMBER +新对象）; questionView =（的WebView）childlayout.findViewById（R.id.Que_View）;
WebSettings webSettings = questionView.getSettings（）;
// webSettings.setTextSize（WebSettings.TextSize.NORMAL）;
webSettings.setDefaultFontSize（23）; question_number.setText（newObject.QUESTION_NUMBER）;
question_type.setText（newObject.QUESTION_TYPE）;
question_correct_answer.setText（newObject.QUESTION_CORRECT_ANSWER）;
question_parameters.setText（newObject.QUESTION_PARAMETERS）;
question_difficulty.setText（newObject.QUESTION_DIFFICULTY）; questionView.setScrollBarStyle（View.SCROLLBARS_INSIDE_OVERLAY）; questionView.getSettings（）setRenderPriority（RenderPriority.HIGH）。
。questionView.getSettings（）setCacheMode（WebSettings.LOAD_NO_CACHE）; questionView.clearView（）;
questionView.loadDataWithBaseURL（
，
IntegralParse.htmlParse（newObject.QUESTION_ code，
到/ mnt / SD卡/ CHECK_LESSON_QUESTIONS /+主题+/+主题
+/+ newObject.QUESTION_NUMBER，
getApplicationContext（），宽）
+＆LT;小时/＆gt;中
+ IntegralParse.htmlParse（newObject.QUESTION_SOL_ code，
到/ mnt / SD卡/ CHECK_LESSON_QUESTIONS /+主题+/
+主题+/
+ newObject.QUESTION_NUMBER，
getApplicationContext（），宽），text / html的
UTF-8，）;
questionView.requestLayout（）;
返回childlayout;}
解决方案
您试图操纵UI线程之外的用户界面？
您需要使用 处理程序 的排队任务从后台线程执行UI线程上。
在与UI线程通信的更多信息。
AsyncTask work fine when I'm doing zip , unzip , download file and store data from XML into database.
But now I'm trying to implement https://github.com/fry15/uk.co.jasonfry.android.tools swipe in layout(data pick from database and show in webview) which add layout in run time so it takes a long time so I can put this in AsyncTask but now AsyncTask progress wheel not spinning ?
My code is working properly but problem is not spinning wheel on AsyncTask.
public class LoadSlideAndQuestion extends AsyncTask<Void, Void, Void> {
ProgressDialog pDialog;
protected void onPreExecute() {
pDialog = new ProgressDialog(DialogBoxOnClick.this);
pDialog.setMessage("Loading Slide and Questions...");
pDialog.setCancelable(false);
pDialog.show();
}
protected Void doInBackground(Void... unused) {
Intent i = new Intent(DialogBoxOnClick.this, SlideScreen.class);
startActivity(i);
finish();
return (null);
}
@Override
protected void onProgressUpdate(Void... values) {
// TODO Auto-generated method stub
super.onProgressUpdate(values);
}
protected void onPostExecute(Void unused) {
pDialog.dismiss();
}
}
SlideActivity
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.temp);
Display display = getWindowManager().getDefaultDisplay();
width = display.getWidth();
topic = getIntent().getSerializableExtra("name").toString();
fetchdata();
PageControl mPageControl = (PageControl) findViewById(R.id.page_control);
mSwipeView = (SwipeView) findViewById(R.id.swipe_view);
mSwipeView.setPageControl(mPageControl);
for (int i = 0; i < max; i++) {
mSwipeView.addView(new FrameLayout(this));
}
for (int i = 0; i < max; i++) {
((FrameLayout) mSwipeView.getChildContainer().getChildAt(i))
.addView(setupView());
count++;
}
}
setupView() function which returns views
public View setupView() {
LayoutInflater layoutInflator = getLayoutInflater();
LinearLayout childlayout = (LinearLayout) layoutInflator.inflate(
R.layout.webview, Switcher, false);
question_number = (TextView) childlayout
.findViewById(R.id.question_number);
question_type = (TextView) childlayout.findViewById(R.id.question_type);
question_parameters = (TextView) childlayout
.findViewById(R.id.question_parameter);
question_correct_answer = (TextView) childlayout
.findViewById(R.id.question_correct_answer);
question_difficulty = (TextView) childlayout
.findViewById(R.id.question_difficulty);
newObject = new Questionclass();
newObject = XmlHandler.questionlist.get(count);
System.out.println(newObject.QUESTION_NUMBER + " NEW OBJECT");
questionView = (WebView) childlayout.findViewById(R.id.Que_View);
WebSettings webSettings = questionView.getSettings();
// webSettings.setTextSize(WebSettings.TextSize.NORMAL);
webSettings.setDefaultFontSize(23);
question_number.setText(newObject.QUESTION_NUMBER);
question_type.setText(newObject.QUESTION_TYPE);
question_correct_answer.setText(newObject.QUESTION_CORRECT_ANSWER);
question_parameters.setText(newObject.QUESTION_PARAMETERS);
question_difficulty.setText(newObject.QUESTION_DIFFICULTY);
questionView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
questionView.getSettings().setRenderPriority(RenderPriority.HIGH);
questionView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
questionView.clearView();
questionView.loadDataWithBaseURL(
"",
IntegralParse.htmlParse(newObject.QUESTION_CODE,
"/mnt/sdcard/CHECK_LESSON_QUESTIONS/" + topic + "/" + topic
+ "/" + newObject.QUESTION_NUMBER,
getApplicationContext(), width)
+ "<hr/>"
+ IntegralParse.htmlParse(newObject.QUESTION_SOL_CODE,
"/mnt/sdcard/CHECK_LESSON_QUESTIONS/" + topic + "/"
+ topic + "/"
+ newObject.QUESTION_NUMBER,
getApplicationContext(), width), "text/html",
"utf-8", "");
questionView.requestLayout();
return childlayout;
}
解决方案
Are you trying to manipulate the UI outside of the UI thread?
You need to use a Handler to queue tasks for performing on the UI thread from a background thread.
More information on Communicating with the UI thread.
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