java - 如果数据不可用，则在开始时禁用 Edittexts 并导航到另一个 Activity

Question

我有两个 Activity SetupActivity 和 DashboardActivity。我正在使用 Firebase 身份验证并检查用户是否存在。新用户申请流程为打开App->MainActivity->RegisterFragment->SetupActivity->DashboardActivity。这是我的SetupActivity.Java

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import android.Manifest;
import android.app.DatePickerDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.Uri;
import android.os.Bundle;
import android.text.InputType;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.WindowManager;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.CheckBox;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.example.kloadingspin.KLoadingSpin;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.android.material.textfield.TextInputEditText;
import com.google.android.material.textfield.TextInputLayout;
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.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;
import com.squareup.picasso.Picasso;
import com.theartofdev.edmodo.cropper.CropImage;
import com.theartofdev.edmodo.cropper.CropImageView;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;

import br.com.simplepass.loadingbutton.customViews.CircularProgressButton;
import de.hdodenhof.circleimageview.CircleImageView;

public class SetupActivity extends AppCompatActivity implements LocationListener, View.OnClickListener {

    private static final int REQUEST_LOCATION = 1 ;
    private TextInputLayout TIPFullname, TIPCurrentLocation, TIPMobile, TIPBloodGroup, TIPLastDonated;
    private TextInputEditText FullName, CurrentLocation, Mobile, BloodGroup, LastDonated;
    private AutoCompleteTextView PermanentLocation;
    private CircularProgressButton SaveInformationButton;
    private CircleImageView ProfileImage;
    private SimpleDateFormat dateFormatter;
    private LocationManager locationManager;
    private LocationListener locationListener;
    private DatePickerDialog datePickerDialog;
    private FirebaseAuth mAuth;
    private DatabaseReference UsersRef;
    private StorageReference UserProfileImageRef;
    private ValidationHelper validation;
    KLoadingSpin a;

    String currentUserID;
    final static int Gallery_Pick = 1;


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

        String[] cities = getResources().getStringArray(R.array.cities);
//        Toast.makeText(this, "First select profile image and then enter details", Toast.LENGTH_LONG).show();
        ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION},REQUEST_LOCATION);

        dateFormatter = new SimpleDateFormat("dd-MM-yyyy", Locale.US);
        mAuth = FirebaseAuth.getInstance();
        currentUserID = mAuth.getCurrentUser().getUid();
        UsersRef = FirebaseDatabase.getInstance().getReference().child("Users").child(currentUserID);
        UserProfileImageRef = FirebaseStorage.getInstance().getReference().child("Profile Images");
        a = findViewById(R.id.KLoadingSpin);
        TIPFullname = findViewById(R.id.tip_fullname);
        TIPCurrentLocation = findViewById(R.id.tip_curr_location);
        TIPBloodGroup = findViewById(R.id.tip_blood_group);
        TIPLastDonated = findViewById(R.id.tip_last_donated);
        TIPMobile = findViewById(R.id.tip_mobile);
        FullName = findViewById(R.id.reg_fullname);
        CurrentLocation = findViewById(R.id.reg_curr_location);
        Mobile = findViewById(R.id.reg_mobile);
        BloodGroup = findViewById(R.id.reg_blood_group);
        PermanentLocation = findViewById(R.id.reg_per_location);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,R.layout.dropdown_menu_popup_item,cities);
        PermanentLocation.setAdapter(adapter);
        PermanentLocation.setThreshold(2);
        LastDonated = findViewById(R.id.reg_last_donated);
        LastDonated.setInputType(InputType.TYPE_NULL);
        SaveInformationButton = findViewById(R.id.btn_save);
        ProfileImage = findViewById(R.id.setup_profile_image);
        validation = new ValidationHelper(this);



        TIPCurrentLocation.setEndIconOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
                getLocation();
            }
        });

         SetDateTimeField();


        SaveInformationButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                checkValidation();
                SaveAccountSetupInformation();
            }
        });

        ProfileImage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent galleryIntent = new Intent();
                galleryIntent.setAction(Intent.ACTION_GET_CONTENT);
                galleryIntent.setType("image/*");
                startActivityForResult(galleryIntent, Gallery_Pick);
            }
        });


        UsersRef.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                if (dataSnapshot.exists()) {
                    if (dataSnapshot.hasChild("profileimage")) {
                        String image = dataSnapshot.child("profileimage").getValue().toString();
                        Picasso.with(SetupActivity.this).load(image).placeholder(R.drawable.default_profile).into(ProfileImage);
                    } else {
                        Toast.makeText(SetupActivity.this, "Please select profile image first.", Toast.LENGTH_LONG).show();
                        tipDisabled();
                    }
                }
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {

            }
        });
    }

    private void SetDateTimeField() {

        LastDonated.setOnClickListener(this);
        Calendar newCalendar = Calendar.getInstance();
        datePickerDialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {

            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                Calendar newDate = Calendar.getInstance();
                newDate.set(year, monthOfYear, dayOfMonth);
                LastDonated.setText(dateFormatter.format(newDate.getTime().toString()));
            }

        },newCalendar.get(Calendar.YEAR), newCalendar.get(Calendar.MONTH), newCalendar.get(Calendar.DAY_OF_MONTH));

    }

    @Override
    public void onClick(View view) {
        if(view == LastDonated) {
           datePickerDialog.show();
        }
    }

    private void checkValidation() {
        if (!validation.isEditTextFilled(BloodGroup, TIPBloodGroup, "Enter Blood Group")) {
            return;
        }

        if (!validation.isEditTextBloodGroup(BloodGroup, TIPBloodGroup, "Enter Correct BloodGroup!!")) {
            return;
        }

    }

    private void getLocation() {

        if(ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
        ActivityCompat.checkSelfPermission(this,Manifest.permission.ACCESS_BACKGROUND_LOCATION) != PackageManager.PERMISSION_GRANTED)

        {
            ActivityCompat.requestPermissions(
                    this,
                    new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_BACKGROUND_LOCATION},
                    75
            );
        }

        isLocationEnabled();
        Location loc=locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
        String longitude = "Longitude: " +loc.getLongitude();
        String latitude = "Latitude: " +loc.getLatitude();

        /*----------to get City-Name from coordinates ------------- */
        String cityName=null;
        Geocoder gcd = new Geocoder(getBaseContext(),
                Locale.getDefault());
        List<Address> addresses;
        try {
            addresses = gcd.getFromLocation(loc.getLatitude(), loc
                    .getLongitude(), 1);
            if (addresses.size() > 0)
                System.out.println(addresses.get(0).getLocality());
            cityName=addresses.get(0).getLocality();
        } catch (IOException e) {
            e.printStackTrace();
        }

        String s = " "+cityName;
        CurrentLocation.setText(s);


    }


    private boolean isLocationEnabled(){
        LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) || locationManager.isProviderEnabled(
                LocationManager.NETWORK_PROVIDER
        );
    }







    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == Gallery_Pick && resultCode == RESULT_OK && data != null) {
            Uri imageUri = data.getData();

            CropImage.activity(imageUri)
                    .setGuidelines(CropImageView.Guidelines.ON)
                    .setAspectRatio(1, 1)
                    .start(this);
        }

        if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
            CropImage.ActivityResult result = CropImage.getActivityResult(data);

            if (resultCode == RESULT_OK) {

                a.setVisibility(View.VISIBLE);
                a.startAnimation();
                a.setIsVisible(true);

                Uri resultUri = result.getUri();

                StorageReference filePath = UserProfileImageRef.child(currentUserID + ".jpg");

                filePath.putFile(resultUri).addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
                    @Override
                    public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task) {
                        if (task.isSuccessful()) {

                            Toast.makeText(SetupActivity.this, "Please Wait", Toast.LENGTH_SHORT).show();

                            Task<Uri> result = task.getResult().getMetadata().getReference().getDownloadUrl();

                            result.addOnSuccessListener(new OnSuccessListener<Uri>() {
                                @Override
                                public void onSuccess(Uri uri) {
                                    final String downloadUrl = uri.toString();

                                    UsersRef.child("profileimage").setValue(downloadUrl)
                                            .addOnCompleteListener(new OnCompleteListener<Void>() {
                                                @Override
                                                public void onComplete(@NonNull Task<Void> task) {
                                                    if (task.isSuccessful()) {
                                                        Toast.makeText(SetupActivity.this, "Please Wait", Toast.LENGTH_LONG).show();
                                                        Intent selfIntent = new Intent(SetupActivity.this, SetupActivity.class);
                                                        startActivity(selfIntent);
                                                        tipEnabled();
                                                        Toast.makeText(SetupActivity.this, "Your Profile image looks great!!!...", Toast.LENGTH_SHORT).show();
                                                        a.stopAnimation();
                                                        a.setVisibility(View.GONE);
                                                        a.setIsVisible(false);

                                                    } else {
                                                        String message = task.getException().getMessage();
                                                        Toast.makeText(SetupActivity.this, "Error: " + message, Toast.LENGTH_SHORT).show();
                                                        tipDisabled();
                                                        a.stopAnimation();
                                                        a.setVisibility(View.GONE);
                                                        a.setIsVisible(false);
                                                    }
                                                }
                                            });
                                }
                            });
                        }
                    }
                });
            } else {
                Toast.makeText(SetupActivity.this, "Error: Image not selected or not cropped", Toast.LENGTH_SHORT).show();
                tipDisabled();
                a.stopAnimation();
                a.setVisibility(View.GONE);
                a.setIsVisible(false);
            }
        }
    }

    private void SaveAccountSetupInformation() {
        String fullname = FullName.getText().toString();
        String currentlocation = CurrentLocation.getText().toString();
        String mobile = Mobile.getText().toString();
        String permanentlocation = PermanentLocation.getText().toString();
        String bloodgroup = BloodGroup.getText().toString();
        String lastdonated = LastDonated.getText().toString();

        if (TextUtils.isEmpty(currentlocation)) {
            Toast.makeText(this, "Please click button and get your current city...", Toast.LENGTH_SHORT).show();
        } else if (TextUtils.isEmpty(mobile)) {
            Toast.makeText(this, "Please write your mobile no...", Toast.LENGTH_SHORT).show();
        } else if (TextUtils.isEmpty(permanentlocation)) {
            Toast.makeText(this, "Please enter your permanent city...", Toast.LENGTH_SHORT).show();
        } else if (TextUtils.isEmpty(fullname)) {
            Toast.makeText(this, "Please enter your full name...", Toast.LENGTH_SHORT).show();
        } else if (TextUtils.isEmpty(bloodgroup)) {
            Toast.makeText(this, "Please enter your bloodgroup...", Toast.LENGTH_SHORT).show();
        }


        else {
            a.setVisibility(View.VISIBLE);
            a.startAnimation();
            a.setIsVisible(true);
            SaveInformationButton.startAnimation();
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
                    WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);

            HashMap userMap = new HashMap();
            userMap.put("bloodgroup", bloodgroup);
            userMap.put("fullname", fullname);
            userMap.put("mobile", mobile);
            userMap.put("currentlocation", currentlocation);
            userMap.put("permanentlocation", permanentlocation);
            userMap.put("timesdonated","0");
            userMap.put("lastdonatedon",lastdonated);
            UsersRef.updateChildren(userMap).addOnCompleteListener(new OnCompleteListener() {
                @Override
                public void onComplete(@NonNull Task task) {
                    if (task.isSuccessful()) {
                        SendUserToMainActivity();
                        Toast.makeText(SetupActivity.this, "your Account is created Successfully.", Toast.LENGTH_LONG).show();
                    } else {
                        a.stopAnimation();
                        a.setVisibility(View.GONE);
                        a.setIsVisible(false);
                        SaveInformationButton.revertAnimation();
                        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);
                        String message = task.getException().getMessage();
                        Toast.makeText(SetupActivity.this, "Error Occured: " + message, Toast.LENGTH_SHORT).show();
                    }
                }
            });
        }
    }

    private void tipDisabled()
    {
        TIPCurrentLocation.setEnabled(false);
        TIPMobile.setEnabled(false);
        TIPBloodGroup.setEnabled(false);
        TIPFullname.setEnabled(false);
        TIPLastDonated.setEnabled(false);
        PermanentLocation.setEnabled(false);
    }

    private void tipEnabled()
    {
        TIPCurrentLocation.setEnabled(true);
        TIPMobile.setEnabled(true);
        TIPBloodGroup.setEnabled(true);
        TIPFullname.setEnabled(true);
        TIPLastDonated.setEnabled(true);
        PermanentLocation.setEnabled(true);
    }


    private void SendUserToMainActivity() {
        Intent mainIntent = new Intent(SetupActivity.this, DashboardActivity.class);
        mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
        startActivity(mainIntent);
        finish();
    }

    @Override
    public void onLocationChanged(Location loc) {

    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {

    }

    @Override
    public void onProviderEnabled(String provider) {

    }

    @Override
    public void onProviderDisabled(String provider) {

        Toast.makeText(this,"Enable Location and Internet to get Location",Toast.LENGTH_LONG);

    }
}

` 这里我希望用户首先选择个人资料图片，然后必须在编辑文本中填充文本。因此，我需要禁用所有编辑文本，并且在设置个人资料图像后我必须启用它们。为此，我编写了tipdisabled() 和tipEnabled() 方法。但我不知道在哪里正确使用它们。请澄清这一点。

Answer 1

您可以像这样合并代码:

private void tipEnabled(Boolean isEnabled)
    {
        TIPCurrentLocation.setEnabled(isEnabled);
        TIPMobile.setEnabled(isEnabled);
        TIPBloodGroup.setEnabled(isEnabled);
        TIPFullname.setEnabled(isEnabled);
        TIPLastDonated.setEnabled(isEnabled);
        PermanentLocation.setEnabled(isEnabled);
    }

要实现您的流程，请将 tipEnabled(false) 放在您选择的图像中，单击监听器并将 tipEnabled(true) 放在 onResult 中，我认为在您的情况下是 <强>onActivityResult()。

您应该隔离代码，因为现在您的 Activity 看起来像一个数据转储，目前正在处理太多的职责。尝试创建 Presenter 类、Controller 类或 ViewModel 类，将所有这些功能委托(delegate)给它们。您的 Activity 应该只充当容器，不应该进行验证或任何逻辑处理，而应该进行委托(delegate)。