[TextInputLayout使用自动完成功能时背景颜色会发生变化

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我进行了登录活动（使用android Studio自动登录活动）。这是供电子邮件视图输入的小部件：

 <android.support.design.widget.TextInputLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:theme="@style/Autocomplete"
            android:textColorHint="#fff">

            <AutoCompleteTextView
                android:id="@+id/email"
                android:textColor="#fff"
                android:theme="@style/Autocomplete"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/prompt_email"
                android:inputType="textEmailAddress"
                android:maxLines="1"
                android:shadowColor="#fff"
                android:singleLine="true" />

        </android.support.design.widget.TextInputLayout>

这里是样式：

 <style name="Autocomplete">
    <item name="colorControlNormal">#fff</item>
    <item name="colorControlActivated">#fff</item>
</style>

看起来不错。单击电子邮件edittext时，android会给我建议的电子邮件，当我单击它时，它将自动填充电子邮件和密码。这很棒。但是，自动填充发生后，背景颜色会自动变为淡色。我该如何阻止？

非常感谢。

所附图片：

enter image description here

enter image description here

当您单击建议的电子邮件时，会发生这种情况：

enter image description here

但是应该是这样：

enter image description here

这里是活动：

    package com.alarm.reuven.beyoung.SignInActivity;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.support.annotation.NonNull;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.app.LoaderManager.LoaderCallbacks;

import android.content.CursorLoader;
import android.content.Loader;
import android.database.Cursor;
import android.net.Uri;
import android.os.AsyncTask;

import android.os.Build;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.text.TextUtils;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.inputmethod.EditorInfo;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

import com.alarm.reuven.beyoung.Activities.OtherActivities.MainActivity;
import com.alarm.reuven.beyoung.R;
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.auth.FirebaseUser;

import static android.Manifest.permission.READ_CONTACTS;

/**
 * A login screen that offers login via email/password.
 */
public class LoginActivity extends AppCompatActivity implements LoaderCallbacks<Cursor> 

    /**
     * Id to identity READ_CONTACTS permission request.
     */
    private static final int REQUEST_READ_CONTACTS = 0;

    private String TAG = "99999.LoginActivity";

    private FirebaseAuth mAuth;

    /**
     * A dummy authentication store containing known user names and passwords.
     * TODO: remove after connecting to a real authentication system.
     */
    private static final String[] DUMMY_CREDENTIALS = new String[]
            "foo@example.com:hello", "bar@example.com:world"
    ;
    /**
     * Keep track of the login task to ensure we can cancel it if requested.
     */


    // UI references.
    private AutoCompleteTextView mEmailView;
    private EditText mPasswordView;
    private View mProgressView;
    private View mLoginFormView;


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



        setContentView(R.layout.activity_login);

        getSupportActionBar().hide();

        // Set up the login form.
        mEmailView = (AutoCompleteTextView) findViewById(R.id.email);
        populateAutoComplete();

        mAuth = FirebaseAuth.getInstance();

        mPasswordView = (EditText) findViewById(R.id.password);
        mPasswordView.setOnEditorActionListener(new TextView.OnEditorActionListener() 
            @Override
            public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) 
                if (id == EditorInfo.IME_ACTION_DONE || id == EditorInfo.IME_NULL) 
                    attemptLogin();
                    return true;
                
                return false;
            
        );

        Button mEmailSignInButton = (Button) findViewById(R.id.email_sign_in_button);
        mEmailSignInButton.setOnClickListener(new OnClickListener() 
            @Override
            public void onClick(View view) 
                attemptLogin();
            
        );

        mLoginFormView = findViewById(R.id.login_form);
        mProgressView = findViewById(R.id.login_progress);

        findViewById(R.id.create_account_tv).setOnClickListener(new OnClickListener() 
            @Override
            public void onClick(View v) 
                Intent intent = new Intent(LoginActivity.this, RegisterActivity.class);
                startActivity(intent);
            
        );




    

    private void populateAutoComplete() 
        if (!mayRequestContacts()) 
            return;
        

        getLoaderManager().initLoader(0, null, this);
    

    private boolean mayRequestContacts() 
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) 
            return true;
        
        if (checkSelfPermission(READ_CONTACTS) == PackageManager.PERMISSION_GRANTED) 
            return true;
        
        if (shouldShowRequestPermissionRationale(READ_CONTACTS)) 
            Snackbar.make(mEmailView, R.string.permission_rationale, Snackbar.LENGTH_INDEFINITE)
                    .setAction(android.R.string.ok, new View.OnClickListener() 
                        @Override
                        @TargetApi(Build.VERSION_CODES.M)
                        public void onClick(View v) 
                            requestPermissions(new String[]READ_CONTACTS, REQUEST_READ_CONTACTS);
                        
                    );
         else 
            requestPermissions(new String[]READ_CONTACTS, REQUEST_READ_CONTACTS);
        
        return false;
    

    /**
     * Callback received when a permissions request has been completed.
     */
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                           @NonNull int[] grantResults) 
        if (requestCode == REQUEST_READ_CONTACTS) 
            if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) 
                populateAutoComplete();
            
        
    


    /**
     * Attempts to sign in or register the account specified by the login form.
     * If there are form errors (invalid email, missing fields, etc.), the
     * errors are presented and no actual login attempt is made.
     */
    private void attemptLogin() 


        // Reset errors.
        mEmailView.setError(null);
        mPasswordView.setError(null);

        // Store values at the time of the login attempt.
        String email = mEmailView.getText().toString();
        String password = mPasswordView.getText().toString();

        boolean cancel = false;
        View focusView = null;

        // Check for a valid password, if the user entered one.
        if (!TextUtils.isEmpty(password) && !isPasswordValid(password)) 
            mPasswordView.setError(getString(R.string.error_invalid_password));
            focusView = mPasswordView;
            cancel = true;
        

        // Check for a valid email address.
        if (TextUtils.isEmpty(email)) 
            mEmailView.setError(getString(R.string.error_field_required));
            focusView = mEmailView;
            cancel = true;
         else if (!isEmailValid(email)) 
            mEmailView.setError(getString(R.string.error_invalid_email));
            focusView = mEmailView;
            cancel = true;
        

        if (cancel) 
            // There was an error; don't attempt login and focus the first
            // form field with an error.
            focusView.requestFocus();
         else 
            // Show a progress spinner, and kick off a background task to
            // perform the user login attempt.
            showProgress(true);

            mAuth.signInWithEmailAndPassword(email, password)
                    .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() 
                        @Override
                        public void onComplete(@NonNull Task<AuthResult> task) 
                            if (task.isSuccessful()) 
                                // Sign in success, update UI with the signed-in user's information
                                Log.d(TAG, "signInWithEmail:success");
                                FirebaseUser user = mAuth.getCurrentUser();


                                Intent intent = new Intent(LoginActivity.this, MainActivity.class);
                                startActivity(intent);
                                finish();

//                                updateUI(user);
                             else 
                                // If sign in fails, display a message to the user.
                                Log.w(TAG, "signInWithEmail:failure", task.getException());
                                Toast.makeText(LoginActivity.this, "Authentication failed.",
                                        Toast.LENGTH_SHORT).show();
                                showProgress(false);
//                                updateUI(null);
                            

                            // ...
                        
                    );




        
    

    private boolean isEmailValid(String email) 
        //TODO: Replace this with your own logic
        return email.contains("@");
    

    private boolean isPasswordValid(String password) 
        //TODO: Replace this with your own logic
        return password.length() > 4;
    

    /**
     * Shows the progress UI and hides the login form.
     */
    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
    private void showProgress(final boolean show) 
        // On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
        // for very easy animations. If available, use these APIs to fade-in
        // the progress spinner.
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) 
            int shortAnimTime = getResources().getInteger(android.R.integer.config_shortAnimTime);

            mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
            mLoginFormView.animate().setDuration(shortAnimTime).alpha(
                    show ? 0 : 1).setListener(new AnimatorListenerAdapter() 
                @Override
                public void onAnimationEnd(Animator animation) 
                    mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
                
            );

            mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
            mProgressView.animate().setDuration(shortAnimTime).alpha(
                    show ? 1 : 0).setListener(new AnimatorListenerAdapter() 
                @Override
                public void onAnimationEnd(Animator animation) 
                    mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
                
            );
         else 
            // The ViewPropertyAnimator APIs are not available, so simply show
            // and hide the relevant UI components.
            mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
            mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
        
    

    @Override
    public Loader<Cursor> onCreateLoader(int i, Bundle bundle) 
        return new CursorLoader(this,
                // Retrieve data rows for the device user's 'profile' contact.
                Uri.withAppendedPath(ContactsContract.Profile.CONTENT_URI,
                        ContactsContract.Contacts.Data.CONTENT_DIRECTORY), ProfileQuery.PROJECTION,

                // Select only email addresses.
                ContactsContract.Contacts.Data.MIMETYPE +
                        " = ?", new String[]ContactsContract.CommonDataKinds.Email
                .CONTENT_ITEM_TYPE,

                // Show primary email addresses first. Note that there won't be
                // a primary email address if the user hasn't specified one.
                ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
    

    @Override
    public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) 
        List<String> emails = new ArrayList<>();
        cursor.moveToFirst();
        while (!cursor.isAfterLast()) 
            emails.add(cursor.getString(ProfileQuery.ADDRESS));
            cursor.moveToNext();
        

        addEmailsToAutoComplete(emails);
    

    @Override
    public void onLoaderReset(Loader<Cursor> cursorLoader) 

    

    private void addEmailsToAutoComplete(List<String> emailAddressCollection) 
        //Create adapter to tell the AutoCompleteTextView what to show in its dropdown list.
        ArrayAdapter<String> adapter =
                new ArrayAdapter<>(LoginActivity.this,
                        android.R.layout.simple_dropdown_item_1line, emailAddressCollection);

        mEmailView.setAdapter(adapter);
    


    private interface ProfileQuery 
        String[] PROJECTION = 
                ContactsContract.CommonDataKinds.Email.ADDRESS,
                ContactsContract.CommonDataKinds.Email.IS_PRIMARY,
        ;

        int ADDRESS = 0;
        int IS_PRIMARY = 1;
答案

Android将为自动填充添加可绘制对象-您可以自定义RES /值/ styles.xml

<resources>
    <style name="MyAutofilledHighlight" parent="...">
        <item name="android:autofilledHighlight">@drawable/my_drawable</item>
    </style>
</resources>

res/drawable/my_drawable.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#4DFF0000" />
</shape>

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