我试图运行一个应用程序，因为这个错误它崩溃了：
FATAL EXCEPTION: main
Process: com.panaceasoft.citiesdirectory, PID: 4201
com.google.gson.JsonSyntaxException: java.lang.NumberFormatException: Invalid double: ""
它有一些Gradle错误，但我已经解决了它们，现在当我试图运行应用程序时它仍然崩溃了。我甚至不知道它是由MainActivity引起的。我应该在哪里查找此错误，以及要改进哪些内容？提前谢谢！
MainActivity：
/**
* Created by Panacea-Soft on 7/15/15.
* Contact Email : teamps.is.cool@gmail.com
*/
public class MainActivity extends AppCompatActivity {
/**------------------------------------------------------------------------------------------------
* Start Block - Private & Public Variables
**------------------------------------------------------------------------------------------------*/
private Toolbar toolbar = null;
private ActionBarDrawerToggle drawerToggle = null;
private DrawerLayout drawerLayout = null;
private NavigationView navigationView = null;
private int currentMenuId = 0;
private FABActions fabActions;
private boolean notiFlag;
private SharedPreferences pref;
private FloatingActionButton fab;
private SpannableString appNameString;
private SpannableString profileString;
private SpannableString registerString;
private SpannableString forgotPasswordString;
private SpannableString searchKeywordString;
private SpannableString favouriteItemString;
public Fragment fragment = null;
/**------------------------------------------------------------------------------------------------
* End Block - Private & PublicVariables
**------------------------------------------------------------------------------------------------*/
/**------------------------------------------------------------------------------------------------
* Start Block - Override Functions
**------------------------------------------------------------------------------------------------*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initUtils();
initUI();
initData();
bindData();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Utils.psLog("OnActivityResult");
if (requestCode == 1) {
if (resultCode == RESULT_OK) {
refreshProfileData();
}
}
}
/**------------------------------------------------------------------------------------------------
* End Block - Override Functions
**------------------------------------------------------------------------------------------------*/
/**------------------------------------------------------------------------------------------------
* Start Block - Init Utils Class
**------------------------------------------------------------------------------------------------*/
private void initUtils() {
new Utils(this);
}
/**------------------------------------------------------------------------------------------------
* End Block - Init Utils Class
**------------------------------------------------------------------------------------------------*/
/**------------------------------------------------------------------------------------------------
* Start Block - Init UI Functions
**------------------------------------------------------------------------------------------------*/
private void initUI(){
initToolbar();
initDrawerLayout();
initNavigationView();
initFAB();
}
private void initToolbar() {
toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle("");
if (toolbar != null) {
setSupportActionBar(toolbar);
}
if (getSupportActionBar() != null) {
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
}
private void initDrawerLayout() {
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawerLayout != null && toolbar != null) {
drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
}
};
drawerLayout.setDrawerListener(drawerToggle);
drawerLayout.post(new Runnable() {
@Override
public void run() {
drawerToggle.syncState();
}
});
}
}
private void initNavigationView() {
navigationView = (NavigationView) findViewById(R.id.nav_view);
if (navigationView != null) {
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
navigationMenuChanged(menuItem);
return true;
}
});
}
}
private void initFAB() {
fab = (FloatingActionButton) findViewById(R.id.fab);
fab.bringToFront();
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
fabClicked(view);
}
});
}
/**------------------------------------------------------------------------------------------------
* End Block - Init UI Functions
**------------------------------------------------------------------------------------------------*/
/**------------------------------------------------------------------------------------------------
* Start Block - Init Data Functions
**------------------------------------------------------------------------------------------------*/
private void initData(){
try {
pref = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
notiFlag = getIntent().getBooleanExtra("show_noti", false);
Utils.psLog("Notification Flag : " + notiFlag);
if (notiFlag) {
savePushMessage(getIntent().getStringExtra("msg"));
openFragment(R.id.nav_push_noti);
} else {
openFragment(R.id.nav_home);
}
}catch(Exception e){
Utils.psErrorLogE("Error in getting notification flag data.", e);
}
try {
appNameString = Utils.getSpannableString(getString(R.string.app_name));
profileString = Utils.getSpannableString(getString(R.string.profile));
registerString = Utils.getSpannableString(getString(R.string.register));
forgotPasswordString = Utils.getSpannableString(getString(R.string.forgot_password));
searchKeywordString = Utils.getSpannableString(getString(R.string.search_keyword));
favouriteItemString = Utils.getSpannableString(getString(R.string.favourite_item));
}catch(Exception e){
Utils.psErrorLogE("Error in init Data.", e);
}
}
/**------------------------------------------------------------------------------------------------
* End Block - Init Data Functions
**------------------------------------------------------------------------------------------------*/
/**------------------------------------------------------------------------------------------------
* Start Block - Bind Data Functions
**------------------------------------------------------------------------------------------------*/
private void bindData() {
toolbar.setTitle(appNameString);
bindMenu();
}
// This function will change the menu based on the user is logged in or not.
public void bindMenu() {
if (pref.getInt("_login_user_id", 0) != 0) {
navigationView.getMenu().setGroupVisible(R.id.group_after_login, true);
navigationView.getMenu().setGroupVisible(R.id.group_before_login, false);
} else {
navigationView.getMenu().setGroupVisible(R.id.group_before_login, true);
navigationView.getMenu().setGroupVisible(R.id.group_after_login, false);
}
}
/**------------------------------------------------------------------------------------------------
* End Block - Bind Data Functions
**------------------------------------------------------------------------------------------------*/
/**------------------------------------------------------------------------------------------------
* Start Block - Private Functions
**------------------------------------------------------------------------------------------------*/
private void disableFAB() {
fab.setVisibility(View.GONE);
}
private void enableFAB() {
fab.setVisibility(View.VISIBLE);
}
private void updateFABIcon(int icon) {
fab.setImageResource(icon);
}
private void updateFABAction(FABActions action) {
fabActions = action;
}
private void navigationMenuChanged(MenuItem menuItem) {
openFragment(menuItem.getItemId());
menuItem.setChecked(true);
drawerLayout.closeDrawers();
}
private void updateFragment(Fragment fragment) {
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction transaction = fm.beginTransaction();
transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
transaction.replace(R.id.content_frame, fragment);
transaction.commit();
}
private void doLogout() {
pref.edit().remove("_login_user_id").commit();
pref.edit().remove("_login_user_name").commit();
pref.edit().remove("_login_user_email").commit();
pref.edit().remove("_login_user_about_me").commit();
pref.edit().remove("_login_user_photo").commit();
bindMenu();
openFragment(R.id.nav_home);
}
/**------------------------------------------------------------------------------------------------
* End Block - Private Functions
**------------------------------------------------------------------------------------------------*/
/**------------------------------------------------------------------------------------------------
* Start Block - Public Functions
**------------------------------------------------------------------------------------------------*/
public void fabClicked(View view) {
if (fabActions == FABActions.PROFILE) {
final Intent intent;
intent = new Intent(this, EditProfileActivity.class);
startActivityForResult(intent, 1);
}
}
public void openFragment(int menuId) {
switch (menuId) {
case R.id.nav_home:
case R.id.nav_home_login:
disableFAB();
fragment = new CitiesListFragment();
toolbar.setTitle(appNameString);
break;
case R.id.nav_profile:
case R.id.nav_profile_login:
if (pref.getInt("_login_user_id", 0) != 0) {
enableFAB();
updateFABIcon(R.drawable.ic_edit_white);
updateFABAction(FABActions.PROFILE);
fragment = new ProfileFragment();
} else {
fragment = new UserLoginFragment();
}
toolbar.setTitle(profileString);
break;
case R.id.nav_register:
fragment = new UserRegisterFragment();
toolbar.setTitle(registerString);
break;
case R.id.nav_forgot:
fragment = new UserForgotPasswordFragment();
toolbar.setTitle(forgotPasswordString);
break;
case R.id.nav_logout:
doLogout();
break;
case R.id.nav_search_keyword:
case R.id.nav_search_keyword_login:
disableFAB();
fragment = new SearchFragment();
toolbar.setTitle(searchKeywordString);
break;
case R.id.nav_push_noti:
case R.id.nav_push_noti_login:
disableFAB();
fragment = new NotificationFragment();
//toolbar.setTitle(Utils.getSpannableString(getString(R.string.push_noti_setting)));
break;
case R.id.nav_favourite_item_login:
disableFAB();
fragment = new FavouritesListFragment();
toolbar.setTitle(favouriteItemString);
break;
default:
break;
}
if (currentMenuId != menuId && menuId != R.id.nav_logout) {
currentMenuId = menuId;
updateFragment(fragment);
try {
navigationView.getMenu().findItem(menuId).setChecked(true);
} catch (Exception e) {
}
}
}
// Neet to check
public void refreshProfileData() {
if (fragment instanceof ProfileFragment) {
((ProfileFragment) fragment).bindData();
}
}
public void refreshProfile(){
openFragment(R.id.nav_profile_login);
}
public void refreshNotification(){
try {
fragment = new NotificationFragment();
updateFragment(fragment);
if (pref.getInt("_login_user_id", 0) != 0) {
currentMenuId = R.id.nav_push_noti_login;
}else{
currentMenuId = R.id.nav_push_noti;
}
navigationView.getMenu().findItem(currentMenuId).setChecked(true);
} catch (Exception e) {
Utils.psErrorLogE("Refresh Notification View Error. " , e);
}
}
public void savePushMessage(String msg) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
SharedPreferences.Editor editor = prefs.edit();
editor.putString("_push_noti_message", msg);
editor.commit();
}
public void loadProfileImage(String path) {
if(!path.toString().equals("")){
final String fileName = path;
Utils.psLog("file name : " + fileName);
Target target = new Target() {
@Override
public void onPrepareLoad(Drawable arg0) {
Utils.psLog("Prepare Image to load.");
return;
}
@Override
public void onBitmapLoaded(final Bitmap bitmap, Picasso.LoadedFrom from) {
Utils.psLog("inside onBitmapLoaded ");
try {
File file;
file = new File(Environment.getExternalStorageDirectory() + "/" + fileName);
file.createNewFile();
FileOutputStream ostream = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 80, ostream);
ostream.close();
Utils.psLog("Success Image Loaded.");
refreshProfile();
} catch (Exception e) {
Utils.psErrorLogE(e.getMessage(), e);
}
}
@Override
public void onBitmapFailed(Drawable arg0) {
Utils.psLog("Fail Fail Fail");
return;
}
};
Utils.psLog("profile photo : " + Config.APP_IMAGES_URL + path);
Picasso.with(this)
//.load("http://www.cindyomidi.net/wp-content/uploads/2015/03/Fine-art1.jpg")
.load(Config.APP_IMAGES_URL + path)
.resize(150,150)
.into(target);
}
}
/**------------------------------------------------------------------------------------------------
* End Block - Public Functions
**------------------------------------------------------------------------------------------------*/
/**------------------------------------------------------------------------------------------------
* Start Block - Enum
**------------------------------------------------------------------------------------------------*/
private enum FABActions {
PROFILE
}
/**------------------------------------------------------------------------------------------------
* End Block - Enum
**------------------------------------------------------------------------------------------------*/
}
onResponse方法：
public void onResponse(JSONObject response) {
try {
String status = response.getString("status");
if (status.equals(jsonStatusSuccessString)) {
progressWheel.setVisibility(View.GONE);
Gson gson = new Gson();
Type listType = new TypeToken<List<PCityData>>() {
}.getType();
pCityDataList = gson.fromJson(response.getString("data"), listType);
Utils.psLog("City Count : " + pCityDataList.size());
if(pCityDataList.size() > 1) {
singleLayout.setVisibility(View.GONE);
mRecyclerView.setVisibility(View.VISIBLE);
updateDisplay();
}else{
mRecyclerView.setVisibility(View.GONE);
singleLayout.setVisibility(View.VISIBLE);
stopLoading();
updateSingleDisplay();
}
updateGlobalCityList();
} else {
stopLoading();
Utils.psLog("Error in loading CityList.");
}
} catch (JSONException e) {
Utils.psErrorLogE("Error in loading CityList.", e);
stopLoading();
e.printStackTrace();
}
}
第252行：
pCityDataList = gson.fromJson(response.getString("data"), listType);
第241行：
new Response.Listener<JSONObject>() {
答案 0 :(得分：0)
您正在尝试将""设置为at com.panaceasoft.citiesdirectory.fragments.CitiesListFragment$5.onResponse(CitiesListFragment.java:252)
at com.panaceasoft.citiesdirectory.fragments.CitiesListFragment$5.onResponse(CitiesListFragment.java:241)
。可能你刚刚监督它。
就在这里
CitiesListFragment.onResponse()在aria-required=false中。但是，我不能说更多，因为你没有在你的问题中提供这些代码。