问题
我用Fragment创建了ViewPager。在下面的代码中，问题发生在 setup_screen3（）中。我正在编码以保持其方向更改和ViewPager幻灯片的状态。我成功通过在onResume（）中实现一些逻辑来实现它。但是，在setup_screen3中有自定义ListView +可扩展动画，我想保留单击项目的展开状态。 我实现onSaveInstanceState（）以保存哪些项位置 isOpen 并使用它通过编程方式在setup_screen3（）中使用Post（）和Runnable（）方法执行单击。它成功保留在API19（移动设备）中，但不在API8（仿真器）中。我不知道是什么问题
注意
我已经削减了无关紧要的代码，因为它太长了。
ScreenSlidePageFragment.Class
private static final String KEY_CONTENT = "INTEREST";
private String currentPos = "-1";
private String mContent = "";
private String yourID = "*******";
private String yourPassword = "*********";
private Handler handler;
private Runnable runnable;
public static ScreenSlidePageFragment produce(String content) {
ScreenSlidePageFragment fragment = new ScreenSlidePageFragment();
fragment.mContent = content;
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/*??*/
if ((savedInstanceState != null) && savedInstanceState.containsKey(KEY_CONTENT)) {
mContent = savedInstanceState.getString(KEY_CONTENT);
}
if ((savedInstanceState != null) && savedInstanceState.containsKey("aa")) {
currentPos = savedInstanceState.getString("aa");
}else{
currentPos = "-1";
}
}
@Override
public void onResume() {
super.onResume();
if(this.mContent.contains("INTEREST")){
}
else if(this.mContent.contains("NEWS")){
}
else if(this.mContent.contains("SCHEDULE")){
scheduleLvItems = new ArrayList<Schedule_ListView>();
String scheduleJSON = dm3.readFile("scheduleJSON");
if (!scheduleJSON.equals("empty")){
System.out.println(scheduleJSON);
renderScreen3(aq3.getContext(), scheduleJSON);
}
else{
String url = "http://requestURL/getSchedule_v2.php?+" +
"loginId="+yourID+
"&password="+yourPassword+
"&year=2013&semester=2";
aq3.ajax(url,String.class, this,"cb3");
}
}
else{
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
LinearLayout layout;
// Toast.makeText(getActivity(),mContent,1).show();
if(this.mContent.contains("INTEREST")){
layout = (LinearLayout)inflater.inflate(R.layout.fragment_interest, null);
setup_screen1(layout);
return layout;
}
else if(this.mContent.contains("NEWS")){
layout = (LinearLayout)inflater.inflate(R.layout.fragment_news, null);
setup_screen2(layout);
return layout;
}
else if(this.mContent.contains("SCHEDULE")){
layout = (LinearLayout)inflater.inflate(R.layout.fragment_schedule, null);
setup_screen3(layout);
return layout;
}
else{
layout= (LinearLayout)inflater.inflate(R.layout.fragment_me, null);
setup_screen4(layout);
return layout;
}
}
private static int[] SUBJECT_COLOR = {
R.color.subject_turquoise,
R.color.subject_orange,
R.color.subject_wisteria,
R.color.subject_cinnabar,
R.color.subject_belizeHole,
R.color.subject_malibu,
R.color.subject_pomegranate,
R.color.subject_sunFlower,
R.color.subject_concrete,
R.color.subject_carrot,
R.color.subject_emerald,
R.color.subject_clouds,
};
private ListView lvSchedule;
private ArrayList<Schedule_ListView> scheduleLvItems;
private Schedule_Adapter scheduleAdapter;
private DataManager dm3;
private AQuery aq3;
private void setup_screen3(LinearLayout layout) {
View v = (View)layout;
final Context c = v.getContext();
aq3 = new AQuery(c);
dm3 = new DataManager(c);
lvSchedule = (ListView) v.findViewById(R.id.listView_schedule);
}
public void cb3(String url, String html, AjaxStatus status){
System.out.println(html);
renderScreen3(aq3.getContext(), html);
}
public void renderScreen3(Context c, String jsonString){
try {
List<List<String>> monData = new ArrayList<List<String>>();
List<List<String>> tueData = new ArrayList<List<String>>();
List<List<String>> wedData = new ArrayList<List<String>>();
List<List<String>> thuData = new ArrayList<List<String>>();
List<List<String>> friData = new ArrayList<List<String>>();
List<List<String>> satData = new ArrayList<List<String>>();
List<List<String>> sunData = new ArrayList<List<String>>();
/*Note [Knowledge]
*JSON Symbol {,} = JSONObject
*JSON symbol [,] = JSONArray
*/
//Change JSONString to JSONArray
JSONArray jsonArray_data = new JSONArray(jsonString);
//Save Persistence Json Array in app data for fetch with out internet
dm3.writeFile("scheduleJSON", jsonArray_data.toString());
for (int i = 0; i < jsonArray_data.length(); i++) {
//Change object to String and stored each JSON item in Variable
JSONObject dataRecord = jsonArray_data.getJSONObject(i);
String yearSemester = dataRecord.getString("YEAR / SEM");
String courseID = dataRecord.getString("COURSE ID");
String courseName = dataRecord.getString("COURSE NAME");
String courseSection = dataRecord.getString("SECTION");
JSONArray courseInfo = dataRecord.getJSONArray("COURSE INFO");
String finalDate = dataRecord.getString("FINAL DATE");
String finalRoom = dataRecord.getString("FINAL ROOM");
String finalTime = dataRecord.getString("FINAL TIME");
String midtermDate = dataRecord.getString("MIDTERM DATE");
String midtermRoom = dataRecord.getString("MIDTERM ROOM");
String midtermTime = dataRecord.getString("MIDTERM TIME");
int subjectColor = getResources().getColor(SUBJECT_COLOR[i]);
for (int ii = 0; ii < courseInfo.length(); ii++) {
//Change object to String and stored each JSON item in Variable
JSONObject infoRecord = courseInfo.getJSONObject(ii);
String day = infoRecord.getString("DAY").replace(".", "").trim();
String tStart = infoRecord.getString("TIME").replace(" - ", "").trim().substring(0, 5);
String tStop = infoRecord.getString("TIME").replace(" - ", "").trim().substring(5);
String roomStudy = infoRecord.getString("ROOM STUDY");
String instructor = infoRecord.getString("INSTRUCTOR");
List<String> dataRow = new ArrayList<String>();
if (day.contains("Mon")) {
dataRow.add(courseName); //course name
dataRow.add(tStart); //period start
dataRow.add(tStop); //period end
dataRow.add(String.valueOf(subjectColor)); //subject color
dataRow.add(String.valueOf(i)); //subject position in json
monData.add(dataRow);
} else if (day.contains("Tue")) {
dataRow.add(courseName); //course name
dataRow.add(tStart); //period start
dataRow.add(tStop); //period end
dataRow.add(String.valueOf(subjectColor)); //subject color
dataRow.add(String.valueOf(i)); //subject position in json
tueData.add(dataRow);
} else if (day.contains("Wed")) {
dataRow.add(courseName); //course name
dataRow.add(tStart); //period start
dataRow.add(tStop); //period end
dataRow.add(String.valueOf(subjectColor)); //subject color
dataRow.add(String.valueOf(i)); //subject position in json
wedData.add(dataRow);
} else if (day.contains("Thu")) {
dataRow.add(courseName); //course name
dataRow.add(tStart); //period start
dataRow.add(tStop); //period end
dataRow.add(String.valueOf(subjectColor)); //subject color
dataRow.add(String.valueOf(i)); //subject position in json
thuData.add(dataRow);
} else if (day.contains("Fri")) {
dataRow.add(courseName); //course name
dataRow.add(tStart); //period start
dataRow.add(tStop); //period end
dataRow.add(String.valueOf(subjectColor)); //subject color
dataRow.add(String.valueOf(i)); //subject position in json
friData.add(dataRow);
} else if (day.contains("Sat")) {
dataRow.add(courseName); //course name
dataRow.add(tStart); //period start
dataRow.add(tStop); //period end
dataRow.add(String.valueOf(subjectColor)); //subject color
dataRow.add(String.valueOf(i)); //subject position in json
satData.add(dataRow);
} else if (day.contains("Sun")) {
dataRow.add(courseName); //course name
dataRow.add(tStart); //period start
dataRow.add(tStop); //period end
dataRow.add(String.valueOf(subjectColor)); //subject color
dataRow.add(String.valueOf(i)); //subject position in json
sunData.add(dataRow);
}
}
}
if (monData.size() != 0) {
scheduleLvItems.add(new Schedule_ListView(
R.drawable.monday_mdpi,
monData,
getResources().getInteger(R.integer.COLLAPSED_HEIGHT_1)
));
}
if (tueData.size() != 0) {
scheduleLvItems.add(new Schedule_ListView(
R.drawable.tuesday_mdpi,
tueData,
getResources().getInteger(R.integer.COLLAPSED_HEIGHT_1)
));
}
if (wedData.size() != 0) {
scheduleLvItems.add(new Schedule_ListView(
R.drawable.wendesday_mdpi,
wedData,
getResources().getInteger(R.integer.COLLAPSED_HEIGHT_1)
));
}
if (thuData.size() != 0) {
scheduleLvItems.add(new Schedule_ListView(
R.drawable.thursday_mdpi,
thuData,
getResources().getInteger(R.integer.COLLAPSED_HEIGHT_1)
));
}
if (friData.size() != 0) {
scheduleLvItems.add(new Schedule_ListView(
R.drawable.friday_mdpi,
friData,
getResources().getInteger(R.integer.COLLAPSED_HEIGHT_1)
));
}
if (satData.size() != 0) {
System.out.println("----------------------!");
scheduleLvItems.add(new Schedule_ListView(
R.drawable.saturday_mdpi,
satData,
getResources().getInteger(R.integer.COLLAPSED_HEIGHT_1)
));
}
if (sunData.size() != 0) {
scheduleLvItems.add(new Schedule_ListView(
R.drawable.sunday_mdpi,
sunData,
getResources().getInteger(R.integer.COLLAPSED_HEIGHT_1)
));
}
//add padding top - bottom for listview
LayoutInflater inflater = (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout header = (LinearLayout) inflater.inflate(R.layout.listview_header, null);
if (lvSchedule.getHeaderViewsCount() < 1) {
lvSchedule.addFooterView(header, null, false);
lvSchedule.addHeaderView(header, null, false);
}
//setup listView Adapter
scheduleAdapter = new Schedule_Adapter(c, R.layout.schedule_listview, scheduleLvItems);
//setup adapter to listView
lvSchedule.setAdapter(scheduleAdapter);
//setup OnClickListener
lvSchedule.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
int postion = i - lvSchedule.getHeaderViewsCount();
toggle(postion, true, 200);
}
});
lvSchedule.post(new Runnable() {
@Override
public void run() {
String[] separated = currentPos.split(",");
try{
for (String i : separated) {
if (!i.equals("-1") && !i.equals("")) {
System.out.println("I------------------------------>" + i);
toggle(Integer.parseInt(i), false, 0);
}
}
}catch (Exception e){
e.printStackTrace();
}
}
});
}catch (Exception e){
System.out.println("RENDER 3 ERROR :: "+e);
}
}
private void toggle(final int position,boolean scrollEnable, int duration) {
int fromHeight;
int toHeight;
Schedule_ListView schedule_listView = scheduleLvItems.get(position);
int from;
if (schedule_listView.getDayData().size() == 1){
from = getResources().getInteger(R.integer.EXPANDED_HEIGHT_1);
}else if(schedule_listView.getDayData().size() == 2){
from = getResources().getInteger(R.integer.EXPANDED_HEIGHT_2);
}else if(schedule_listView.getDayData().size() == 3){
from = getResources().getInteger(R.integer.EXPANDED_HEIGHT_3);
}else if(schedule_listView.getDayData().size() == 4){
from = getResources().getInteger(R.integer.EXPANDED_HEIGHT_4);
}else{
from = getResources().getInteger(R.integer.EXPANDED_HEIGHT_5);
}
if (schedule_listView.isOpen()) {
fromHeight = from;
toHeight = getResources().getInteger(R.integer.COLLAPSED_HEIGHT_1);
} else {
fromHeight = getResources().getInteger(R.integer.COLLAPSED_HEIGHT_1);
toHeight = from;
}
toggleAnimation(schedule_listView, position, fromHeight, toHeight, scrollEnable,duration);
}
private void toggleAnimation(final Schedule_ListView listItem, final int position,
final int fromHeight, final int toHeight, final boolean goToItem, int duration) {
ResizeAnimation resizeAnimation = new ResizeAnimation(scheduleAdapter,listItem, 0, fromHeight, 0, toHeight,duration);
resizeAnimation.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationRepeat(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
listItem.setOpen(!listItem.isOpen());
listItem.setCurrentHeight(toHeight);
scheduleAdapter.notifyDataSetChanged();
if (goToItem)
goToItem(position);
}
});
listItem.getWrapper().startAnimation(resizeAnimation);
}
private void goToItem(final int position) {
lvSchedule.post(new Runnable() {
@Override
public void run() {
try {
lvSchedule.smoothScrollToPosition(position + lvSchedule.getHeaderViewsCount());
} catch (Exception e) {
lvSchedule.setSelection(position + lvSchedule.getHeaderViewsCount());
}
}
});
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString(KEY_CONTENT, mContent);
try {
String a = "-1,";
int i = 0;
for(Schedule_ListView scLv : scheduleLvItems){
if(scLv.isOpen()){
a += i + ",";
}
i++;
}
System.out.println("SAVE STATE-----------> "+a);
outState.putString("aa", a);
}catch (Exception e) {
e.printStackTrace();
}
}
logcat的
06-09 12:42:58.962 1061-1061/com.bis.org.auInsight D/dalvikvm﹕ GC_FOR_MALLOC freed 6371 objects / 395032 bytes in 72ms
06-09 12:42:59.031 1061-1061/com.bis.org.auInsight I/System.out﹕ RESUME STATE!!!---------------------------------------
06-09 12:42:59.041 1061-1061/com.bis.org.auInsight I/System.out﹕ [{"MIDTERM DATE":"26-02-2014","YEAR \/ SEM":"2013\/2","FINAL DATE":"29-04-2014","COURSE NAME":"ENGLISH IV","SECTION":"409","FINAL TIME":"09:00 - 12:00","COURSE ID":"BG2001","COURSE INFO":[{"DAY":"Tue.","TIME":"09:00 - 10:30 ","INSTRUCTOR":"DANIEL LEE ONDERDONK","ROOM STUDY":"SG405"},{"DAY":"Wed.","TIME":"09:00 - 10:30 ","INSTRUCTOR":"DANIEL LEE ONDERDONK","ROOM STUDY":"SG405"},{"DAY":"Thu.","TIME":"09:00 - 10:30 ","INSTRUCTOR":"DANIEL LEE ONDERDONK","ROOM STUDY":"SG405"},{"DAY":"Fri.","TIME":"09:00 - 10:30 ","INSTRUCTOR":"GREGORY MARK BORNMANN","ROOM STUDY":"SG405"}],"NO.":"1","MIDTERM ROOM":"","MIDTERM TIME":"09:00 - 11:00","FINAL ROOM":""},{"MIDTERM DATE":"05-03-2014","YEAR \/ SEM":"2013\/2","FINAL DATE":"12-05-2014","COURSE NAME":"MACROECONOMICS","SECTION":"415","FINAL TIME":"13:00 - 16:00","COURSE ID":"BG2400","COURSE INFO":[{"DAY":"Tue.","TIME":"12:00 - 13:30 ","INSTRUCTOR":"SHIH-TSE-LO","ROOM STUDY":"SM331"},{"DAY":"Thu.","TIME":"12:00 - 13:30 ","INSTRUCTOR":"SHIH-TSE-LO","ROOM STUDY":"SM331"}],"NO.":"2","MIDTERM ROOM":"","MIDTERM TIME":"15:00 - 17:00","FINAL ROOM":""},{"MIDTERM DATE":"06-03-2014","YEAR \/ SEM":"2013\/2","FINAL DATE":"02-05-2014","COURSE NAME":"SELECTED PROGRAMMING LANGUAGE","SECTION":"401","FINAL TIME":"09:00 - 12:00","COURSE ID":"BIS3618","COURSE INFO":[{"DAY":"Thu.","TIME":"13:30 - 16:30 ","INSTRUCTOR":"TANAKOM TANTONTRAKUL","ROOM STUDY":"SC0502"}],"NO.":"3","MIDTERM ROOM":"","MIDTERM TIME":"12:00 - 14:00","FINAL ROOM":""},{"MIDTERM DATE":"04-03-2014","YEAR \/ SEM":"2013\/2","FINAL DATE":"08-05-2014","COURSE NAME":"STRATEGIC TECHNOLOGY MANAGEMENT","SECTION":"401","FINAL TIME":"09:00 - 12:00","COURSE ID":"BIS4875","COURSE INFO":[{"DAY":"Tue.","TIME":"15:00 - 16:30 ","INSTRUCTOR":"KRISEE VIPULAKOM","ROOM STUDY":"MSM0603"},{"DAY":"Fri.","TIME":"15:00 - 16:30 ","INSTRUCTOR":"KRISEE VIPULAKOM","ROOM STUDY":"MSM0603"}],"NO.":"4","MIDTERM ROOM":"","MIDTERM TIME":"09:00 - 11:00","FINAL ROOM":""},{"MIDTERM DATE":"27-02-2014","YEAR \/ SEM":"2013\/2","FINAL DATE":"30-04-2014","COURSE NAME":"MONEY, BANKING AND FINANCIAL MARKETS","SECTION":"422","FINAL TIME":"13:00 - 16:00","COURSE ID":"FIN2700","COURSE INFO":[{"DAY":"Wed.","TIME":"10:30 - 12:00 ","INSTRUCTOR":"PEERAWICH THOVIRIYAVEJ","ROOM STUDY":"CL1904"},{"DAY":"Fri.","TIME":"10:30 - 12:00 ","INSTRUCTOR":"PEERAWICH THOVIRIYAVEJ","ROOM STUDY":"CL0901"}],"NO.":"5","MIDTERM ROOM":"","MIDTERM TIME":"09:00 - 11:00","FINAL ROOM":""},{"MIDTERM DATE":"03-03-2014","YEAR \/ SEM":"2013\/2","FINAL DATE":"07-05-2014","COURSE NAME":"BUSINESS RESEARCH METHODOLOGY","SECTION":"413","FINAL TIME":"09:00 - 12:00","COURSE ID":"MGT3940","COURSE INFO":[{"DAY":"Tue.","TIME":"10:30 - 12:00 ","INSTRUCTOR":"ANYAMANEE PHUNGPHOL","ROOM STUDY":"MSM0806"},{"DAY":"Fri.","TIME":"13:30 - 15:00 ","INSTRUCTOR":"ANYAMANEE PHUNGPHOL","ROOM STUDY":"SM207"}],"NO.":"6","MIDTERM ROOM":"","MIDTERM TIME":"12:00 - 14:00","FINAL ROOM":""}]
06-09 12:42:59.362 1061-1061/com.bis.org.auInsight I/System.out﹕ I------------------------------>0
06-09 12:42:59.362 1061-1061/com.bis.org.auInsight D/AndroidRuntime﹕ Shutting down VM
06-09 12:42:59.362 1061-1061/com.bis.org.auInsight W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x4001d800)
06-09 12:42:59.372 1061-1061/com.bis.org.auInsight E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.IllegalStateException: Fragment ScreenSlidePageFragment{43e72068} not attached to Activity
at android.support.v4.app.Fragment.getResources(Fragment.java:601)
at com.bis.org.auInsight.ScreenSlidePageFragment.toggle(ScreenSlidePageFragment.java:471)
at com.bis.org.auInsight.ScreenSlidePageFragment.access$100(ScreenSlidePageFragment.java:23)
at com.bis.org.auInsight.ScreenSlidePageFragment$2.run(ScreenSlidePageFragment.java:439)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
at dalvik.system.NativeStart.main(Native Method)
06-09 12:43:00.651 1061-1061/com.bis.org.auInsight I/Process﹕ Sending signal. PID: 1061 SIG: 9