Android Sinch（OTP验证）活动崩溃

试图实现sinch，但活动正在崩溃。我用的是翻新和毕加索。我能用Sinch吗？我还使用了sinch教程中给出的其他两个类。这是我的密码

MainActivity.java

}

activity_main.xml

---

我做错了什么？

当视图尚未创建时，您试图在

onCreate（）

中初始化微调器。尝试在

onStart（）

或

onResume（）

中执行此操作，我认为不应将其标记为重复。前一个问题旨在解决NPE的一般情况，而在这里，Op可能知道NPE是什么，但想知道为什么该对象没有首先实例化。答案将是特定于Android的。正如@AmokraneChentir所说的，我认为这不是一个重复的问题。尝试过，没有效果。实际上，当我下载示例项目并运行它时，它工作得很好。但是当我把它集成到我的项目中时，它崩溃了；我已经集成了Facebook、毕加索和改装。有没有可能是它们造成了一些麻烦？我可以在同一个项目中使用它们吗？我还尝试了数字，但它也不起作用。您实现了CountrySpinner类还是库类？类，而不是库类您可以共享您的类吗？完成了，我也添加了CountrySpinner.java类

public class Register extends AppCompatActivity {
public static final String SMS = "sms";
public static final String FLASHCALL = "flashcall";
public static final String INTENT_PHONENUMBER = "phonenumber";
public static final String INTENT_METHOD = "method";

private EditText mPhoneNumber;
private Button mSmsButton;
private Button mFlashCallButton;
private String mCountryIso;
private TextWatcher mNumberTextWatcher;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);

    mPhoneNumber = (EditText) findViewById(R.id.phoneNumber);
    mSmsButton = (Button) findViewById(R.id.smsVerificationButton);
    mFlashCallButton = (Button) findViewById(R.id.callVerificationButton);

    mCountryIso = PhoneNumberUtils.getDefaultCountryIso(this);
    final String defaultCountryName = new Locale("", mCountryIso).getDisplayName();
    final CountrySpinner spinner = (CountrySpinner) findViewById(R.id.spinner);
    spinner.init(defaultCountryName);
    spinner.addCountryIsoSelectedListener(new CountrySpinner.CountryIsoSelectedListener() {
        @Override
        public void onCountryIsoSelected(String selectedIso) {
            if (selectedIso != null) {
                mCountryIso = selectedIso;
                resetNumberTextWatcher(mCountryIso);
                // force update:
                mNumberTextWatcher.afterTextChanged(mPhoneNumber.getText());
            }
        }
    });
    resetNumberTextWatcher(mCountryIso);

    tryAndPrefillPhoneNumber();
}

private void tryAndPrefillPhoneNumber() {
    if (checkCallingOrSelfPermission(Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_GRANTED) {
        TelephonyManager manager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
        mPhoneNumber.setText(manager.getLine1Number());
    } else {
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_PHONE_STATE}, 0);
    }
}

public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
        tryAndPrefillPhoneNumber();
    } else {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, permissions[0])) {
            Toast.makeText(this, "This application needs permission to read your phone number to automatically "
                    + "pre-fill it", Toast.LENGTH_LONG).show();
        }
    }
}

private void openActivity(String phoneNumber, String method) {
    Intent verification = new Intent(this, VerificationActivity.class);
    verification.putExtra(INTENT_PHONENUMBER, phoneNumber);
    verification.putExtra(INTENT_METHOD, method);
    startActivity(verification);
}

private void setButtonsEnabled(boolean enabled) {
    mSmsButton.setEnabled(enabled);
    mFlashCallButton.setEnabled(enabled);
}

public void onButtonClicked(View view) {
    if (view == mSmsButton) {
        openActivity(getE164Number(), SMS);
    } else if (view == mFlashCallButton) {
        openActivity(getE164Number(), FLASHCALL);
    }
}

private void resetNumberTextWatcher(String countryIso) {

    if (mNumberTextWatcher != null) {
        mPhoneNumber.removeTextChangedListener(mNumberTextWatcher);
    }

    mNumberTextWatcher = new PhoneNumberFormattingTextWatcher(countryIso) {
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            super.onTextChanged(s, start, before, count);
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            super.beforeTextChanged(s, start, count, after);
        }

        @Override
        public synchronized void afterTextChanged(Editable s) {
            super.afterTextChanged(s);
            if (isPossiblePhoneNumber()) {
                setButtonsEnabled(true);
                mPhoneNumber.setTextColor(Color.BLACK);
            } else {
                setButtonsEnabled(false);
                mPhoneNumber.setTextColor(Color.RED);
            }
        }
    };

    mPhoneNumber.addTextChangedListener(mNumberTextWatcher);
}

private boolean isPossiblePhoneNumber() {
    return PhoneNumberUtils.isPossibleNumber(mPhoneNumber.getText().toString(), mCountryIso);
}

private String getE164Number() {
    return PhoneNumberUtils.formatNumberToE164(mPhoneNumber.getText().toString(), mCountryIso);
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/startbg"
android:padding="0dip"
tools:context=".MainActivity">

<LinearLayout
    android:id="@+id/numberInputLayout"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:orientation="vertical"
    android:paddingLeft="40dp"
    android:paddingRight="40dp">

    <com.sinch.verification.sample.CountrySpinner
        android:id="@+id/spinner"
        android:layout_width="255dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="40dp"
        android:text="@string/enterphonenumber"
        android:textAllCaps="true"
        android:textColor="@color/sinch_purple"
        android:textSize="18sp" />

    <EditText
        android:id="@+id/phoneNumber"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:background="@drawable/inputbox"
        android:inputType="phone"
        android:padding="10dp"
        android:textColor="@color/sinch_purple"
        android:textSize="32sp">

        <requestFocus />
    </EditText>
</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:orientation="vertical"
    android:paddingEnd="40dp"
    android:paddingStart="40dp">

    <Button
        android:id="@+id/smsVerificationButton"
        android:layout_width="fill_parent"
        android:layout_height="60dp"
        android:layout_centerHorizontal="true"
        android:layout_gravity="center_horizontal"
        android:layout_marginBottom="10dp"
        android:background="@drawable/button_purple_generic"
        android:minHeight="56dp"
        android:minWidth="132dp"
        android:onClick="onButtonClicked"
        android:text="SMS Verification"
        android:textAllCaps="true"
        android:textColor="#ffffff"
        android:textSize="20sp" />

    <Button
        android:id="@+id/callVerificationButton"
        android:layout_width="fill_parent"
        android:layout_height="60dp"
        android:layout_centerHorizontal="true"
        android:layout_gravity="center_horizontal"
        android:layout_marginBottom="30dp"
        android:background="@drawable/button_purple_generic"
        android:minHeight="56dp"
        android:minWidth="132dp"
        android:onClick="onButtonClicked"
        android:text="Flash call Verification"
        android:textAllCaps="true"
        android:textColor="#ffffff"
        android:textSize="20sp" />


</LinearLayout>

<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/numberInputLayout"
    android:layout_centerHorizontal="true"
    android:layout_gravity="center_horizontal"
    android:text="@string/selectcountry"
    android:textAllCaps="true"
    android:textColor="@color/sinch_purple"
    android:textSize="18sp" />

    public class CountrySpinner extends Spinner {
private Map<String, String> mCountries = new TreeMap<String, String>();
private List<CountryIsoSelectedListener> mListeners = new ArrayList<CountryIsoSelectedListener>();

public interface CountryIsoSelectedListener {
    void onCountryIsoSelected(String iso);
}

public CountrySpinner(Context context) {
    super(context);
}

public CountrySpinner(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public void init(String defaultCountry) {
    initCountries();
    List<String> countryList = new ArrayList<String>();

    countryList.addAll(mCountries.keySet());
    countryList.remove(defaultCountry);
    countryList.add(0, defaultCountry);

    ArrayAdapter adapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_spinner_item, countryList);

    setAdapter(adapter);

    setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int position, long id) {
            final String selectedCountry = (String) adapterView.getItemAtPosition(position);
            notifyListeners(selectedCountry);
        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {
        }
    });
}

public void addCountryIsoSelectedListener(CountryIsoSelectedListener listener) {
    mListeners.add(listener);
}

public void removeCountryIsoSelectedListener(CountryIsoSelectedListener listener) {
    mListeners.remove(listener);
}

private void initCountries() {
    String[] isoCountryCodes = Locale.getISOCountries();
    for (String iso : isoCountryCodes) {
        String country = new Locale("", iso).getDisplayCountry();
        mCountries.put(country, iso);
    }
}

private void notifyListeners(String selectedCountry) {
    final String selectedIso = mCountries.get(selectedCountry);
    for (CountryIsoSelectedListener listener : mListeners) {
        listener.onCountryIsoSelected(selectedIso);
    }
}

7305-7305/earn.free.cashback.snapcash E/AndroidRuntime: FATAL EXCEPTION:main
                                                                       Process: earn.free.cashback.snapcash, PID: 7305
                                                                       java.lang.RuntimeException: Unable to start activity ComponentInfo{earn.free.cashback.snapcash/earn.free.cashback.snapcash.Register}: java.lang.NullPointerException: Attempt to invoke virtual method 'void earn.free.cashback.snapcash.CountrySpinner.init(java.lang.String)' on a null object reference
                                                                           at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2426)
                                                                           at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2490)
                                                                           at android.app.ActivityThread.-wrap11(ActivityThread.java)
                                                                           at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354)
                                                                           at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                           at android.os.Looper.loop(Looper.java:148)
                                                                           at android.app.ActivityThread.main(ActivityThread.java:5443)
                                                                           at java.lang.reflect.Method.invoke(Native Method)
                                                                           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
                                                                           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
                                                                        Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void earn.free.cashback.snapcash.CountrySpinner.init(java.lang.String)' on a null object reference
                                                                           at earn.free.cashback.snapcash.Register.onCreate(Register.java:49)
                                                                           at android.app.Activity.performCreate(Activity.java:6245)
                                                                           at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1130)
                                                                           at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
                                                                           at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2490) 
                                                                           at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                                                                           at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354) 
                                                                           at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                           at android.os.Looper.loop(Looper.java:148) 
                                                                           at android.app.ActivityThread.main(ActivityThread.java:5443) 
                                                                           at java.lang.reflect.Method.invoke(Native Method) 
                                                                           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728) 
                                                                           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)