错误试图注册使用电子邮件和密码在Android Studio中使用火力

Question

我有这个错误试图运行在Android Studio中的代码：

错误：

2019-02-07 20:16:50.708 30406-30406/? E/Zygote: isWhitelistProcess - Process is Whitelisted
2019-02-07 20:16:50.708 30406-30406/? E/libpersona: scanKnoxPersonas
2019-02-07 20:16:50.709 30406-30406/? E/libpersona: Couldn't open the File - /data/system/users/0/personalist.xml - No such file or directory
2019-02-07 20:17:05.426 30406-30406/com.example.servicees E/ViewRootImpl: sendUserActionEvent() returned.
2019-02-07 20:17:25.789 30406-30406/com.example.servicees E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.servicees, PID: 30406
    java.lang.IllegalArgumentException: Given String is empty or null
        at com.google.android.gms.common.internal.Preconditions.checkNotEmpty(Unknown Source:5)
        at com.google.firebase.auth.FirebaseAuth.createUserWithEmailAndPassword(Unknown Source:232)
        at com.example.servicees.MainActivity$1.onClick(MainActivity.java:78)
        at android.view.View.performClick(View.java:6909)
        at android.widget.TextView.performClick(TextView.java:12693)
        at android.view.View$PerformClick.run(View.java:26199)
        at android.os.Handler.handleCallback(Handler.java:789)
        at android.os.Handler.dispatchMessage(Handler.java:98)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6944)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)

码：

package com.example.servicees;
import android.content.Intent;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.hbb20.CountryCodePicker;

public class MainActivity extends AppCompatActivity {


    EditText etName, etService, etDes, etCost, etContact, etPass, etEmail;
    Button offer;
    CountryCodePicker ccp;
    private FirebaseAuth mAuth;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);

        etName = findViewById(R.id.enterName);
        etService = findViewById(R.id.enterService);
        etDes = findViewById(R.id.enterDescription);
        etCost = findViewById(R.id.enterCost);
        etContact = findViewById(R.id.enterContact);
        etPass = findViewById(R.id.enterPassword);
        etEmail = findViewById(R.id.enterEmail);
        ccp = findViewById(R.id.ccpLogin);

        /*final String putName=etName.getText().toString();
        final String putService=etService.getText().toString();
        final String putDes=etDes.getText().toString();
        final String putCost=etCost.getText().toString();
        //final String putPass=etPass.getText().toString();
        final String putEmail=etEmail.getText().toString();
        final String putPass=etPass.getText().toString();*/


        ccp.registerCarrierNumberEditText(etContact);

        //final String fullNumber = ccp.getFullNumberWithPlus();

        offer = findViewById(R.id.offerBtn);

        mAuth=FirebaseAuth.getInstance();

        offer.setOnClickListener(new View.OnClickListener() {
             String putName=etName.getText().toString().trim();
             String putService=etService.getText().toString().trim();
             String putDes=etDes.getText().toString().trim();
             String putCost=etCost.getText().toString().trim();
             String putEmail=etEmail.getText().toString().trim();
             String putPass=etPass.getText().toString().trim();
             //ccp.registerCarrierNumberEditText(etContact);

             String fullNumber = ccp.getFullNumberWithPlus();

            @Override
            public void onClick(View v) {
                if(notEmpty()){
                mAuth.createUserWithEmailAndPassword(putEmail, putPass).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful())
                        {
                            User user = new User(putName, putService, putDes, putCost, fullNumber, putPass, putEmail);
                            FirebaseDatabase.getInstance().getReference("Users").child(putEmail).setValue(user);
                            Toast.makeText(MainActivity.this, "Registered", Toast.LENGTH_LONG).show();
                        }
                        else
                            Toast.makeText(MainActivity.this, "Failed", Toast.LENGTH_LONG).show();
                    }
                });
                }
                else
                    Toast.makeText(MainActivity.this, "All Fields Are Required", Toast.LENGTH_LONG).show();
            }
        });
    }


    public boolean notEmpty() {
        Boolean checker;
        String checkEmName = etName.getText().toString();
        String checkEmService = etService.getText().toString();
        String checkEmDes = etDes.getText().toString();
        String checkEmCost = etCost.getText().toString();
        String fullNumberCh = ccp.getFullNumberWithPlus();
        String checkEmEmail = etEmail.getText().toString();
        String checkEmPass = etPass.getText().toString();
        if (checkEmName.isEmpty() || checkEmService.isEmpty() || checkEmDes.isEmpty() || checkEmCost.isEmpty() || fullNumberCh.isEmpty() || checkEmEmail.isEmpty() || checkEmPass.isEmpty())
            checker = false;
        else
            checker = true;
        return checker;
    }
}

Answer 1

您需要将每个那些getText().toString()的迁入onClick。

否则，你在点击监听器连接到按钮让空字符串（即你输入任何文字之前）

此外，您可能希望看到Android TextUtils isEmpty vs String.isEmpty