java.lang.NullPointerException：尝试调用虚拟方法 空对象引用上的“ void android.widget.RadioGroup.check（int）” 在themedicall.com.Home.onCreate（Home.java:257）
public class SharedPrefManager {
private static SharedPrefManager mInstance;
SharedPreferences.Editor editor;
SharedPreferences sharedPrefs;
public static synchronized SharedPrefManager getLoginInstance(Context context) {
if (mInstance == null) {
mInstance = new SharedPrefManager(context);
}
return mInstance;
}
private SharedPrefManager(Context context) {
sharedPrefs = context.getSharedPreferences("shared_pref", Context.MODE_PRIVATE);
}
public void saveData(String hospital) {
editor = sharedPrefs.edit();
if (!hospital.equalsIgnoreCase("")) editor.putString("hospital", hospital);
editor.apply();
}
public boolean isradioChecked() {
String hospital = sharedPrefs.getString("hospital", "");
if (hospital.equals("")) {
return false;
} else {
return true;
}
}
public boolean isDrugLogin() {
String Drugs = sharedPrefs.getString("Drugs", "");
if (Drugs.equals("")) {
return false;
} else {
return true;
}
}
public void logout() {
editor = sharedPrefs.edit();
editor.clear();
editor.apply();
}
家庭活动
public class Home extends NavigationDrawer implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener, LocationListener,
SearchView.OnQueryTextListener {
EditText mainSearchView;
public static final int REQUEST_PERMISSION_CODE = 30;
ProgressDialog progressDialog;
private static final String TAG = "Home";
String cancel_req_tag = "Home";
Boolean locationApiHasRun = false;
public static Double lat, lang;
public static LatLng userCurrentLocation;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
LocationRequest mLocationRequest;
public static String city, state, country, postalCode, knownName;
SharedPreferences sharedPreferencesCityAndLatLng, sharedPreferencesForBloodCurrentCity;
public static SharedPreferences.Editor cityAndLatLngEditor, bloodCurrentCity;
JSONObject jsonObject;
JSONArray jsonArray;
Button locationFilter;
CircleImageView userIcon;
ImageView searchViewImg;
ImageView doctorFilterImage;
ImageView WhatsappBtn;
ImageView WebBtn;
ImageView AccountBtn;
RelativeLayout.LayoutParams params;
ImageView iv_crosee;
RelativeLayout rl_for_drawer_icon;
ImageView im_up_arrow, iv_touch;
RelativeLayout rl_full_screen_view;
SearchView search_view;
int radioSelectedId;
RadioButton radioButton;
private Timer timer;
JSONObject object;
JSONArray hospitalArray;
AutoCompleteTextView autoCompleteSearch;
Handler mHandler;
String radioButtonText = "Doctors";
private String textToSearch;
private String filter;
ProgressBar advanceSearchBar;
Dialog networkDialog;
RelativeLayout homeMainLayout;
MyReceiverForImageUploaded myReceiverForImageUploaded;
SharedPreferences sharedPreferencesFirstTimeGuied;
Button drugBookBtn;
Button studyRoomBtn;
RadioGroup mainSearchRadioGroup, mainSearchRadioGroup2;
String generic = "Generic";
String brand = "Brand";
String company = "Company";
Boolean genericBool;
Boolean brandBool;
Boolean companyBool;
String company_id;
String company_name;
String brand_name;
String generics_id;
String generics_name;
String potency;
String potencymajor;
String brand_detail_id;
String packing;
String drug_form;
String price;
String generic_name;
String drugId;
JSONObject company_jsonObject;
JSONObject form_jsonObject;
JSONArray drugs_JsonArray;
JSONArray brand_details;
Boolean companyloaded = false;
Boolean genericsloaded = false;
Boolean brandloaded = false;
String type = "Brand";
private ProgressBar bar;
private int requestCount = 1;
int last_page = 0;
BroadcastReceiver checkConectivity;
DataBaseAccess db;
RadioButton hospital_radio;
RadioGroup radio_group;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (SharedPrefManager.getLoginInstance(Home.this).isradioChecked()) {
radio_group.check(R.id.hospital_radio);
radioButtonText="Hospitals";
mainSearchRadioGroup.clearCheck();
openSearchViewDialog();
}else if
(SharedPrefManager.getLoginInstance(Home.this).isDrugLogin())
{
radio_group.check(R.id.brand_radio);
radioButtonText="Drugs";
openSearchViewDialog();
mainSearchRadioGroup.clearCheck();
}
getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
getSupportActionBar().setCustomView
(R.layout.custom_actionbar_navigation_drawer);
customActionBarView=getSupportActionBar().getCustomView();
getSupportActionBar().setElevation(0);
getSupportActionBar().setBackgroundDrawable(new
ColorDrawable(getResources()
.getColor(R.color.landingScreenBackgroundColor)));
LayoutInflater layoutInflater=(LayoutInflater)
this.getSystemService(LAYOUT_INFLATER_SERVICE);
View view=layoutInflater.inflate(R.layout.activity_home, null,
false);
drawer.addView(view, 0);
radio_group = (RadioGroup) findViewById(R.id.radio_group);
hospital_radio= (RadioButton) findViewById(R.id.hospital_radio);
//radio_group.check(R.id.doctor_radio);
radio_group.setOnCheckedChangeListener(listener1);
mainSearchRadioGroup.setOnCheckedChangeListener(listener1);
}
private RadioGroup.OnCheckedChangeListener listener1 = new
RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (group.getCheckedRadioButtonId() == R.id.doctor_radio) {
radioButtonText = "Doctors";
} else if (group.getCheckedRadioButtonId() ==
R.id.hospital_radio) {
radioButtonText = "Hospitals";
} else if (group.getCheckedRadioButtonId() == R.id.brand_radio) {
radioButtonText = "Drugs";
} else if (group.getCheckedRadioButtonId() == R.id.generic_radio)
{
radioButtonText = "Generics";
//saveData(radioButtonText);
}else {
SharedPrefManager.getLoginInstance(Home.this).saveData(radioButtonText);
Log.e("tag", "radio button in text in main search : " +
radioButtonText);
}
}
};
public void openSearchViewDialog() {
autoCompleteSearch.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(final Editable editable) {
if (radioButtonText.equals("Doctors")) {
if (editable.toString().length() >= 3) {
Log.e("tag", "auto complete text : " +
editable.toString());
Log.e("tag", "doctor radio button selected: ");
doctorNameFilter.clear();
useHandler(editable.toString(), "Doctors");
} else {
Log.e("tag", "web service not call " +
editable.toString());
}
} else if (radioButtonText.equals("Hospitals")) {
if (editable.toString().length() >= 3) {
Log.e("tag", "auto complete text : " +
editable.toString());
Log.e("tag", "radio button in text in main search : "
+ radioButtonText);
HospitalNameFilter.clear();
useHandler(editable.toString(), "Hospitals");
} else {
Log.e("tag", "web service not call " +
editable.toString());
}
} else if (radioButtonText.equals("Drugs")) {
if (editable.toString().length() >= 3) {
Log.e("tag", "auto complete text : " +
editable.toString());
Log.e("tag", "radio button in text in main search : "
+ radioButtonText);
brandNamesFilter.clear();
useHandler(editable.toString(), "Drugs");
} else {
Log.e("tag", "web service not call " +
editable.toString());
}
} else if (radioButtonText.equals("Generics")) {
if (editable.toString().length() >= 3) {
Log.e("tag", "auto complete text : " +
editable.toString());
Log.e("tag", "radio button in text in main search : "
+ radioButtonText);
genericNamesFilter.clear();
useHandler(editable.toString(), "Generics");
} else {
Log.e("tag", "web service not call " +
editable.toString());
}
}
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int
i1, int i2) {
}
@Override
public void beforeTextChanged(CharSequence charSequence, int i,
int i1, int i2) {
// Toast.makeText(Hospitals.this, "text in beforeTextChanged
"+charSequence.toString(), Toast.LENGTH_SHORT).show();
}
});
答案 0 :(得分：0)
您尝试在初始化之前设置radio_group。看看
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
getSupportActionBar().setCustomView
(R.layout.custom_actionbar_navigation_drawer);
customActionBarView=getSupportActionBar().getCustomView();
getSupportActionBar().setElevation(0);
getSupportActionBar().setBackgroundDrawable(new
ColorDrawable(getResources()
.getColor(R.color.landingScreenBackgroundColor)));
LayoutInflater layoutInflater=(LayoutInflater)
this.getSystemService(LAYOUT_INFLATER_SERVICE);
View view=layoutInflater.inflate(R.layout.activity_home, null,
false);
drawer.addView(view, 0);
radio_group = (RadioGroup) findViewById(R.id.radio_group);
hospital_radio= (RadioButton) findViewById(R.id.hospital_radio);
//radio_group.check(R.id.doctor_radio);
radio_group.setOnCheckedChangeListener(listener1);
mainSearchRadioGroup.setOnCheckedChangeListener(listener1);
if (SharedPrefManager.getLoginInstance(Home.this).isradioChecked()) {
radio_group.check(R.id.hospital_radio);
radioButtonText="Hospitals";
mainSearchRadioGroup.clearCheck();
openSearchViewDialog();
}else if
(SharedPrefManager.getLoginInstance(Home.this).isDrugLogin())
{
radio_group.check(R.id.brand_radio);
radioButtonText="Drugs";
openSearchViewDialog();
mainSearchRadioGroup.clearCheck();
}
}
private RadioGroup.OnCheckedChangeListener listener1 = new
RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (group.getCheckedRadioButtonId() == R.id.doctor_radio) {
radioButtonText = "Doctors";
} else if (group.getCheckedRadioButtonId() ==
R.id.hospital_radio) {
radioButtonText = "Hospitals";
} else if (group.getCheckedRadioButtonId() == R.id.brand_radio) {
radioButtonText = "Drugs";
} else if (group.getCheckedRadioButtonId() == R.id.generic_radio)
{
radioButtonText = "Generics";
//saveData(radioButtonText);
}else {
SharedPrefManager.getLoginInstance(Home.this).saveData(radioButtonText);
Log.e("tag", "radio button in text in main search : " +
radioButtonText);
}
}
};
public void openSearchViewDialog() {
autoCompleteSearch.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(final Editable editable) {
if (radioButtonText.equals("Doctors")) {
if (editable.toString().length() >= 3) {
Log.e("tag", "auto complete text : " +
editable.toString());
Log.e("tag", "doctor radio button selected: ");
doctorNameFilter.clear();
useHandler(editable.toString(), "Doctors");
} else {
Log.e("tag", "web service not call " +
editable.toString());
}
} else if (radioButtonText.equals("Hospitals")) {
if (editable.toString().length() >= 3) {
Log.e("tag", "auto complete text : " +
editable.toString());
Log.e("tag", "radio button in text in main search : "
+ radioButtonText);
HospitalNameFilter.clear();
useHandler(editable.toString(), "Hospitals");
} else {
Log.e("tag", "web service not call " +
editable.toString());
}
} else if (radioButtonText.equals("Drugs")) {
if (editable.toString().length() >= 3) {
Log.e("tag", "auto complete text : " +
editable.toString());
Log.e("tag", "radio button in text in main search : "
+ radioButtonText);
brandNamesFilter.clear();
useHandler(editable.toString(), "Drugs");
} else {
Log.e("tag", "web service not call " +
editable.toString());
}
} else if (radioButtonText.equals("Generics")) {
if (editable.toString().length() >= 3) {
Log.e("tag", "auto complete text : " +
editable.toString());
Log.e("tag", "radio button in text in main search : "
+ radioButtonText);
genericNamesFilter.clear();
useHandler(editable.toString(), "Generics");
} else {
Log.e("tag", "web service not call " +
editable.toString());
}
}
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int
i1, int i2) {
}
@Override
public void beforeTextChanged(CharSequence charSequence, int i,
int i1, int i2) {
// Toast.makeText(Hospitals.this, "text in beforeTextChanged
"+charSequence.toString(), Toast.LENGTH_SHORT).show();
}
});
答案 1 :(得分：0)
在使用无线电组之前，您错过了初始化。看看您使用的onCreateMethod
if (SharedPrefManager.getLoginInstance(Home.this).isradioChecked()) {
radio_group.check(R.id.hospital_radio);
radioButtonText="Hospitals";
mainSearchRadioGroup.clearCheck();
openSearchViewDialog();
}
但是您在调用 check radio_group = (RadioGroup) findViewById(R.id.radio_group);
因此，在致电setCheck();