我的MainActivity包含一个mikepenz / MaterialDrawer和一个包含5个片段的分页器视图。我正在使用材料抽屉启动其他活动，但在启动许多活动并返回到我的基本主要活动后，发生以下崩溃。 我不知道找到这个问题的实际根本原因。我们将非常感谢您的帮助。
java.lang.StackOverflowError
at android.view.GLES20Canvas.drawTextRun(GLES20Canvas.java:1345)
at android.text.SpannableStringBuilder.drawTextRun(SpannableStringBuilder.java:1139)
at android.view.GLES20Canvas.drawTextRun(GLES20Canvas.java:1372)
at android.text.TextLine.drawTextRun(TextLine.java:988)
at android.text.TextLine.handleText(TextLine.java:789)
at android.text.TextLine.handleRun(TextLine.java:956)
at android.text.TextLine.drawRun(TextLine.java:395)
at android.text.TextLine.draw(TextLine.java:193)
at android.text.Layout.drawText(Layout.java:348)
at android.widget.Editor.drawHardwareAccelerated(Editor.java:1455)
at android.widget.Editor.onDraw(Editor.java:1378)
at android.widget.TextView.onDraw(TextView.java:5170)
at android.view.View.draw(View.java:14476)
at android.view.View.getDisplayList(View.java:13373)
at android.view.View.getDisplayList(View.java:13415)
at android.view.View.draw(View.java:14193)
at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
at android.view.View.getDisplayList(View.java:13368)
at android.view.View.getDisplayList(View.java:13415)
at android.view.View.draw(View.java:14193)
at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
at android.view.View.getDisplayList(View.java:13368)
at android.view.View.getDisplayList(View.java:13415)
at android.view.View.draw(View.java:14193)
at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
at android.view.View.draw(View.java:14479)
at android.view.View.getDisplayList(View.java:13373)
at android.view.View.getDisplayList(View.java:13415)
at android.view.View.draw(View.java:14193)
at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
at android.view.View.draw(View.java:14479)
at android.widget.FrameLayout.draw(FrameLayout.java:472)
at android.widget.HorizontalScrollView.draw(HorizontalScrollView.java:1609)
at android.view.View.getDisplayList(View.java:13373)
at android.view.View.getDisplayList(View.java:13415)
at android.view.View.draw(View.java:14193)
at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
at android.view.View.draw(View.java:14479)
at android.widget.FrameLayout.draw(FrameLayout.java:472)
at android.widget.HorizontalScrollView.draw(HorizontalScrollView.java:1609)
at android.view.View.getDisplayList(View.java:13373)
at android.view.View.getDisplayList(View.java:13415)
at android.view.View.draw(View.java:14193)
at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
at android.view.View.getDisplayList(View.java:13368)
at android.view.View.getDisplayList(View.java:13415)
at android.view.View.draw(View.java:14193)
at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
at android.view.View.draw(View.java:14479)
at android.widget.FrameLayout.draw(FrameLayout.java:472)
at android.view.View.getDisplayList(View.java:13373)
at android.view.View.getDisplayList(View.java:13415)
at android.view.View.draw(View.java:14193)
at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
at android.view.View.draw(View.java:14479)
at android.view.View.getDisplayList(View.java:13373)
at android.view.View.getDisplayList(View.java:13415)
at android.view.View.draw(View.java:14193)
at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
at android.view.View.draw(View.java:14479)
at android.support.v4.view.ViewPager.draw(ViewPager.java:2443)
at android.view.View.getDisplayList(View.java:13373)
at android.view.View.getDisplayList(View.java:13415)
公共类MainActivity扩展了MyAppFragmentActivity {
public static final String app_version="v1.134";
@Inject protected MyAppServiceProvider serviceProvider;
@Inject protected LogoutService logoutService;
private MyApplication app =MyApplication.getInstance();
private boolean userHasAuthenticated = false;
MainActivity activity;
public static final String TAG = MainActivity.class.getSimpleName();
public static final String permission = MainActivity.class+".permission";
//NEW CODE
private FrameLayout rootLayout;
private LinearLayout msgContainer;
//save our header or result
private AccountHeader headerResult = null;
private Drawer result = null;
private Login login;
private String sourceMenuJson;
//PAGER RELATED
ViewPager pager;
PagerAdapter pagerAdapter;
SlidingTabLayout tabs;
static final int noOfTabs= 5;
CharSequence pagerTitles[] = {
//some strings
};
//TABLET LAUNCH SCREEN RELATED
private myappHorizontalOptionsMenu mmyappHorizontalOptionsMenu;
private myappHorizontalOption mSelectedmyappOption;
private TeachingPlanListFragment mTeachingPlanListFragment;
private Bus bus = app.getBus();
private Bundle savedInstanceState; //used by drawer menu
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.savedInstanceState = savedInstanceState;
setContentView(R.layout.main_activity);
msgContainer = (LinearLayout) findViewById(R.id.croutonContainer);
rootLayout = (FrameLayout) findViewById(R.id.rootLayout);
rootLayout.getForeground().setAlpha(0);
this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
View mobilePagerView = findViewById(R.id.pager);
View tabletWrapperView = findViewById(R.id.tablet_wrapper_view);
// View injection with ButterKnife
Views.inject(this);
//INJECTS INTO DAGGER
Injector.inject(this);
activity = this;
checkAuth();
Log.d(TAG,"userHasAuthenticated "+userHasAuthenticated);
if(isTablet()) {
//setContentView(R.layout.main_activity_tablet);
Log.d(TAG,"IS table view");
processTabletView();
} else {
//setContentView(R.layout.main_activity);
Log.d(TAG,"IS mobile view");
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT, 1.0f);
mobilePagerView.setLayoutParams(param);
tabletWrapperView.setVisibility(View.GONE);
}
}
@Override
protected void onPostCreate(final Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
}
@Override
protected void onResume() {
super.onResume();
bus.register(this);
if(userHasAuthenticated){
initScreen();
}
}
@Override
public void onBackPressed() {
//handle the back press :D close the drawer first and if the drawer is closed close the activity
if (result != null && result.isDrawerOpen()) {
result.closeDrawer();
} else {
super.onBackPressed();
}
}
public boolean isTablet() {
return UIUtils.isTablet(this);
}
private void initScreen() {
if (userHasAuthenticated) {
login = app.getLogin();
setNavigationDrawer();
setUserProfile();
initPager();
}
}
private void setAttendenceType() {
if (NetworkUtil.isInternetAvailable())
new AttendanceType().execute();
}
private void checkAuth() {
new SafeAsyncTask<Boolean>() {
@Override
public Boolean call() throws Exception {
final MyAppService svc = serviceProvider.getService(MainActivity.this);
return svc != null;
}
@Override
protected void onException(final Exception e) throws RuntimeException {
super.onException(e);
if (e instanceof OperationCanceledException) {
// User cancelled the authentication process (back button, etc).
// Since auth could not take place, lets finish this activity.
finish();
}
}
@Override
protected void onSuccess(Boolean hasAuthenticated) throws Exception {
Log.d(TAG,"onSuccess "+hasAuthenticated);
if(app.getLogin() == null
|| app.getLogin().getId() == null){
Login login = new Login();
SharedPreferences pref = getApplicationContext().getSharedPreferences("session", 0); // 0 - for private mode
app.setLogin(login);
}
setAttendenceType();
/**GCM RELATED CODE**/
myappGCMUtil gcmUtil = new myappGCMUtil(getApplicationContext(), app.getLogin());
String regid = gcmUtil.getRegistrationId();
if (regid.isEmpty()) {
gcmUtil.registerInBackground();
}
super.onSuccess(hasAuthenticated);
userHasAuthenticated = true;
initScreen();
}
}.execute();
}
private class AttendanceType extends AsyncTask<Void, Void, Void>{
@Override
protected Void doInBackground(Void... voids) {
try {
serviceProvider.getService(activity).getAttendanceType(activity);
} catch (IOException e) {
e.printStackTrace();
} catch (AccountsException e) {
e.printStackTrace();
}
return null;
}
}
//get the list of permission
private void getPermissions(){
String permissions = "";
new AsyncTask<Void, Void, String>(){
@Override
protected String doInBackground(Void... voids) {
PermissionWrapper postPermission = new PermissionWrapper();
List<PermissionCode> permissionCodes = new ArrayList<PermissionCode>();
for(int i=0; i < MainActivity.permissionCodes.length; i++){
PermissionCode code = new PermissionCode();
code.setCode(MainActivity.permissionCodes[i]);
permissionCodes.add(code);
}
for(int i=0; i < MainActivity.canPermissionCodes.length; i++){
PermissionCode code = new PermissionCode();
code.setCode(MainActivity.canPermissionCodes[i]);
permissionCodes.add(code);
}
postPermission.setId(app.getLogin().getName());
postPermission.setResperm(permissionCodes);
Log.d(TAG, new Gson().toJson(postPermission));
try {
HttpRequest requestPermission = post(app.getURL_PERMISSION())
.contentType("application/json")
.header(HEADER_TOKEN_KEY, HEADER_TOKEN)
.send(new Gson().toJson(postPermission));
if (requestPermission.ok()) {
Log.d(TAG, "permission loaded");
return Strings.toString(requestPermission.buffer());
} else {
Log.d(TAG, "permission loading failed");
return "";
}
}
catch (Exception e){
e.printStackTrace();
}
return "";
}
@Override
protected void onPostExecute(String permissionList) {
super.onPostExecute(permissionList);
SharedPreferences pref = getApplicationContext().getSharedPreferences("session", 0); // 0 - for private mode
SharedPreferences.Editor editor = pref.edit();
if(permissionList!=null && permissionList.length() > 0)
editor.putString(MainActivity.permission, permissionList);
editor.apply();
}
}.execute();
}
//RETRIEVES INSTITUTES LIST FROM STRING
public List<Institute> retrieveInstitutes(String instituteString){
List<Institute> institutes = new ArrayList<Institute>();
if(instituteString!=null){
Gson gson = new Gson();
Institute[] institutesArray = gson.fromJson(instituteString,Institute[].class);
institutes = Arrays.asList(institutesArray);
institutes = new ArrayList<Institute>(institutes);
}
return institutes;
}
/***********************************************
* PAGER RELATED
* **********************************************/
//INIT PAGER RELATED
private void initPager(){
// Assigning ViewPager View and setting the adapter
pager = (ViewPager) findViewById(R.id.pager);
// Assiging the Sliding Tab Layout View
tabs = (SlidingTabLayout) findViewById(R.id.tabs);
tabs.setDistributeEvenly(true); // To make the Tabs Fixed set this true, This makes the tabs Space Evenly in Available width
// Setting Custom Color for the Scroll bar indicator of the Tab View
tabs.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
@Override
public int getIndicatorColor(int position) {
return ContextCompat.getColor(getApplicationContext(),R.color.colorWhite);
}
});
// Creating The ViewPagerAdapter and Passing Fragment Manager, Titles fot the Tabs and Number Of Tabs.
pagerAdapter = new PagerAdapter(getSupportFragmentManager(), pagerTitles, noOfTabs);
pager.setAdapter(null);
pager.setAdapter(pagerAdapter);
pager.setCurrentItem(1, true);
// Setting the ViewPager For the SlidingTabsLayout
tabs.setViewPager(pager);
}
/***************************************************
* Navigation Drawer Menu Related
* *************************************************/
//TO LOAD READ DRAWER MENUS FROM JSON FILE
public String loadJSONMenuFromAsset() {
if(sourceMenuJson==null){
try {
InputStream is = getAssets().open("drawer_menus.json");
int size = is.available();
byte[] buffer = new byte[size];
is.read(buffer);
is.close();
sourceMenuJson = new String(buffer, "UTF-8");
} catch (IOException ex) {
ex.printStackTrace();
return null;
}
}else
Log.d(TAG,"sourceMenuJson already exists");
return sourceMenuJson;
}
//INITIALIZE NAVIGATION DRAWER
private void setNavigationDrawer(){
// Handle Toolbar
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
//set the back arrow in the toolbar
setTitle(R.string.app_name);
getSupportActionBar().setDisplayHomeAsUpEnabled(false);
// Create the AccountHeader
headerResult = new AccountHeaderBuilder()
.withActivity(this)
.withHeaderBackground(ContextCompat.getDrawable(this,R.drawable.left_menu_header_bg))
.withTranslucentStatusBar(false)
.withCompactStyle(true)
.withSavedInstance(savedInstanceState)
.build();
result = new DrawerBuilder()
.withActivity(this)
.withToolbar(toolbar)
.withDisplayBelowStatusBar(false)
.withTranslucentStatusBar(false)
.withActionBarDrawerToggleAnimated(true)
.withAccountHeader(headerResult) //set the AccountHeader we created earlier for the header
.withOnDrawerItemClickListener(new Drawer.OnDrawerItemClickListener() {
@Override
public boolean onItemClick(View view, int position, IDrawerItem drawerItem) {
if (drawerItem != null) {
onDrawerMenuSelected(drawerItem.getIdentifier());
}
return false;
}
})
.addDrawerItems(
setMenuList()
)
.addStickyDrawerItems(new PrimaryDrawerItem().withName(R.string.logout_action).withIcon(myappIcon.Icon.cmu_logout).withIdentifier(-1))
.withSavedInstance(savedInstanceState)
.withShowDrawerOnFirstLaunch(true)
.build();
result.getActionBarDrawerToggle().setDrawerIndicatorEnabled(true);//SHOW HAMBURGER ICON
}
@Nullable
private IDrawerItem[] setMenuList() {
List<IDrawerItem> iDrawerItems = new ArrayList<IDrawerItem>();
List<DrawerMenuItem> allMenus = new Gson().fromJson(loadJSONMenuFromAsset(),DrawerMenuWrapper.class).getMenuItems();
SharedPreferences pref = app.getSharedPreferences("session", 0);
if(null != pref.getString(MainActivity.permission, null)) {
Log.d(TAG, pref.getString(MainActivity.permission, null));
PermissionResponseWrapper responseWrapper;
try {
responseWrapper = new Gson().fromJson(pref.getString(MainActivity.permission, null), PermissionResponseWrapper.class);
} catch (Exception e) {
responseWrapper = null;
}
if (responseWrapper != null && responseWrapper.getOutput().getData().getResperm() != null) {
for (DrawerMenuItem menuItem : allMenus) {
// iterate through list add the permissions available
for (PermissionCode code : responseWrapper.getOutput().getData().getResperm()) {
if (code.getCode().equals(menuItem.getCode())) {
//SETS MENU ITEM SHOW TO TRUE;
menuItem.setShow(true);
}
}
}
}
//ITERATE ALL MENUS AND ADD TO VIEW ONLY IF "show==true"
for (DrawerMenuItem menuItem : allMenus){
if (menuItem.isShow()) {
int stringID = getResources().getIdentifier(menuItem.getName(), "string", this.getPackageName());
iDrawerItems.add(new PrimaryDrawerItem().withName(stringID).withIcon(menuItem.getIcon()).withIdentifier(menuItem.getPos()));
iDrawerItems.add(new DividerDrawerItem());
}
}
return iDrawerItems.toArray(new IDrawerItem[iDrawerItems.size()]);
}
return null;
}
//SETS THE USER NAME AND PHOTO
private void setUserProfile(){
IProfile profile = new ProfileDrawerItem().withName(login.getUname()).withEmail(login.getOrgname());
String imageUrl = login.getImageUrl();
if(imageUrl!=null && imageUrl.length()>0){
//LOADS IMAGE FROM SERVER
//initialize and create the image loader logic
DrawerImageLoader.init(new DrawerImageLoader.IDrawerImageLoader() {
@Override
public void set(ImageView imageView, Uri uri, Drawable placeholder) {
Picasso.with(imageView.getContext()).load(uri).transform(new CircleTransformPicasso()).placeholder(placeholder).into(imageView);
}
@Override
public void cancel(ImageView imageView) {
Picasso.with(imageView.getContext()).cancelRequest(imageView);
}
@Override
public Drawable placeholder(Context ctx) {
return null;
}
@Override
public Drawable placeholder(Context ctx,String s) {
return null;
}
});
profile.withIcon(app.getURL_GET_AVATAR()+imageUrl);
}else {
//SETS DEFAULT IMAGE
profile.withIcon(myappIcon.Icon.cmu_students);
}
headerResult.addProfile(profile, 0);
}
public void onDrawerMenuSelected(long position) {
int selectedMenu = (int) position;
switch(selectedMenu) {
case -1:
//Logout
logoutService.logout(new Runnable() {
@Override
public void run() {
//Reload activity
Intent intent =getIntent();
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
finish();
startActivity(intent);
}
});
break;
}
}
/***************************************************
* Tablet Land Screen Related
****************************************************/
//Initialize Tablet screen related work
private void processTabletView(){
mSelectedmyappOption = new myappHorizontalOption();
loadHorizontalMenus();
}
//LOAD HORIZONTAL OPTION MENUS FOR TABLET VIEW
private void loadHorizontalMenus(){
final Map<String,String> tabletLaunchOptions= new LinkedHashMap<>();
tabletLaunchOptions.put("AA", app.getResources().getString(R.string.menu_teaching_plan));
tabletLaunchOptions.put("BB", app.getResources().getString(R.string.assignments));
tabletLaunchOptions.put("CC", app.getResources().getString(R.string.attendance));
mmyappHorizontalOptionsMenu = (myappHorizontalOptionsMenu) findViewById(R.id.myappHorizontalOptionsMenu);
mmyappHorizontalOptionsMenu.distributeEvenly(true);
mmyappHorizontalOptionsMenu.setOptions(tabletLaunchOptions);
mmyappHorizontalOptionsMenu.disableOptionClick(true);
// Setting Custom Color for the Scroll bar indicator of the Tab View
mmyappHorizontalOptionsMenu.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
@Override
public int getIndicatorColor(int position) {
return ContextCompat.getColor(getApplicationContext(),R.color.colorPrimary);
}
});
}
//Launch Attendance Fragment
public void launchAttendanceFragment(final Intent intent, String sourceFragment){
//Post deselection inorder to swap current selection view
ListItemDeselectEvent event = new ListItemDeselectEvent();
if(sourceFragment.equals("ScheduleListFragment")){
event.setTargetClassName("MyClassListFragment");
}else {
event.setTargetClassName("ScheduleListFragment");
}
bus.post(event);
//Get selected option and set option
mSelectedmyappOption.setTag("ATTENDANCE");
mSelectedmyappOption.setLabel(app.getResources().getString(R.string.attendance));
mSelectedmyappOption.setPosition(2);
mmyappHorizontalOptionsMenu.setSelectedOption(mSelectedmyappOption, false);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
AttendanceListFragment attendanceListFragment = new AttendanceListFragment();
attendanceListFragment.intiFragment(MainActivity.this,intent);
getSupportFragmentManager().beginTransaction()
.replace(R.id.fragment_details, attendanceListFragment)
.commit();
}
},300);
}
//Set selected schedule and launches teaching plan
public void launchTeachingPlanUpdateFragment(final Schedule schedule){
//Post deselection inorder to swap current selection view
ListItemDeselectEvent event = new ListItemDeselectEvent();
event.setTargetClassName("MyClassListFragment");
bus.post(event);
mSelectedmyappOption.setTag("CC");
mSelectedmyappOption.setLabel(app.getResources().getString(R.string.menu_teaching_plan));
mSelectedmyappOption.setPosition(0);
mmyappHorizontalOptionsMenu.setSelectedOption(mSelectedmyappOption, false);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
mTeachingPlanListFragment = new TeachingPlanListFragment();
mTeachingPlanListFragment.intiFragment(schedule);
getSupportFragmentManager().beginTransaction()
.replace(R.id.fragment_details, mTeachingPlanListFragment)
.commit();
}
},300);
}
}
答案 0 :(得分：0)
最后我自己解决了这个问题。问题是我已经从onResume（）初始化了“View Pager”和“Drawer Menu”。每当我从其他活动回来时，“View Pager”和“Drawer Menu”会再次初始化，从而产生StackOverflow异常。