前一段时间，我在弄乱我的主题，以某种方式设法弄乱了某些东西，由于某种原因，我无法恢复原状。我当前的活动栏显示了我的LoginActivity类的所有预期活动。我的注册课程很好。
Toolbar.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/toolbar"
android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:layout_alignParentTop="true"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary" />
LoginActivity.xml（显示了操作栏，但缺少按钮，它为空白）
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.hmrs.login.LoginActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/my_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="4dp"
android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
</android.support.design.widget.AppBarLayout>
<include layout="@layout/toolbar"/>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:background="@color/colorPrimaryDark"
android:gravity="center"
android:orientation="vertical"
android:padding="@dimen/activity_horizontal_margin">
<TextView
android:layout_width="wrap_content"
android:layout_height="@dimen/logo_w_h"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="30dp"
android:text="@string/app_name"
android:textSize="30sp"/>
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:id="@+id/email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:hint="@string/hint_email"
android:inputType="textEmailAddress"
android:textColor="@color/darkTextColor"
android:textColorHint="@color/darkTextColor" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:id="@+id/password"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:hint="@string/hint_password"
android:inputType="textPassword"
android:textColor="@color/darkTextColor"
android:textColorHint="@color/darkTextColor" />
</android.support.design.widget.TextInputLayout>
<!-- Login Button -->
<Button
android:id="@+id/btn_login"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:background="@color/white"
android:text="@string/btn_login"
android:textColor="@android:color/black"
android:textAllCaps="false"/>
<Button
android:id="@+id/btn_reset_password"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:background="@color/colorAccent"
android:text="@string/btn_forgot_password"
android:textAllCaps="false"
android:textColor="@color/darkTextColor" />
<Button
android:id="@+id/btn_signup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_marginTop="20dp"
android:layout_weight="0"
android:background="@color/colorAccent"
android:gravity="center|bottom"
android:text="@string/btn_link_to_register"
android:textAllCaps="false"
android:textColor="@color/darkTextColor"
android:textSize="15dp" />
</LinearLayout>
<ProgressBar
android:id="@+id/progressBar"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center|bottom"
android:layout_marginBottom="20dp"
android:visibility="gone" />
</android.support.design.widget.CoordinatorLayout>
LoginActivity类
public class LoginActivity extends AppCompatActivity {
private EditText inputEmail, inputPassword;
private FirebaseAuth auth;
private ProgressBar progressBar;
private Button btnSignup, btnLogin, btnReset;
private FirebaseAuth.AuthStateListener authListener;
private FirebaseAuth mAuth;
private FirebaseFirestore mFirestore;
private FirebaseAuth.AuthStateListener authStateListener;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Toolbar myToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(myToolbar);
if (getSupportActionBar() != null) {
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayUseLogoEnabled(true);
}
//Get Firebase auth instance
mAuth = FirebaseAuth.getInstance();
mFirestore = FirebaseFirestore.getInstance();
FirebaseApp.initializeApp(this);
authStateListener = new FirebaseAuth.AuthStateListener() {
FirebaseUser firebaseUser = mAuth.getCurrentUser();
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
if (firebaseUser != null) {
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
}
};
// set the view now
setContentView(R.layout.activity_login);
inputEmail = (EditText) findViewById(R.id.email);
inputPassword = (EditText) findViewById(R.id.password);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
btnSignup = (Button) findViewById(R.id.btn_signup);
btnLogin = (Button) findViewById(R.id.btn_login);
btnReset = (Button) findViewById(R.id.btn_reset_password);
//Get Firebase auth instance
auth = FirebaseAuth.getInstance();
btnSignup.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(LoginActivity.this, RegisterActivity.class));
}
});
btnReset.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(LoginActivity.this, ResetPasswordActivity.class));
}
});
btnLogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String email = inputEmail.getText().toString();
final String password = inputPassword.getText().toString();
if (TextUtils.isEmpty(email)) {
Toast.makeText(getApplicationContext(), "Please enter a valid email address!", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(password)) {
Toast.makeText(getApplicationContext(), "Please enter a valid password!", Toast.LENGTH_SHORT).show();
return;
}
progressBar.setVisibility(View.VISIBLE);
//authenticate user
auth.signInWithEmailAndPassword(email, password)
.addOnCompleteListener(LoginActivity.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
// If sign in fails, display a message to the user. If sign in succeeds
// the auth state listener will be notified and logic to handle the
// signed in user can be handled in the listener.
progressBar.setVisibility(View.GONE);
if (!task.isSuccessful()) {
// there was an error
if (password.length() < 6) {
inputPassword.setError(getString(R.string.minimum_password));
} else {
Toast.makeText(LoginActivity.this, getString(R.string.auth_failed), Toast.LENGTH_LONG).show();
}
} else {
Intent intent = new Intent(LoginActivity.this, AccountPageActivity.class);
startActivity(intent);
finish();
}
}
});
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
menu.findItem(R.id.action_Close).setVisible(false); //hide cancel button
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.item_settings:
startActivity(new Intent(getApplicationContext(), TabMenu.class));
return true;
case R.id.item_backup:
startActivity(new Intent(getApplicationContext(), AccountPageActivity.class));
return true;
case R.id.item_rhPlus:
startActivity(new Intent(getApplicationContext(), LoginActivity.class));
return true;
case R.id.item_usageguide:
startActivity(new Intent(getApplicationContext(), ExpenseCreation.class));
return true;
case R.id.item_aboutUs:
startActivity(new Intent(getApplicationContext(), AboutUs.class));
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
RegisterActivity类（此处显示AppBar）
public class RegisterActivity extends AppCompatActivity {
private EditText inputEmail, inputPassword, firstName;
private Button btnSignIn, btnSignUp, btnResetPassword;
private ProgressBar progressBar;
private static final String TAG = "RegisterActivity";
private FirebaseFirestore mFirestore;
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener authStateListener;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
//Get Firebase auth instance
mAuth = FirebaseAuth.getInstance();
mFirestore = FirebaseFirestore.getInstance();
FirebaseApp.initializeApp(this);
mAuth = FirebaseAuth.getInstance();
mFirestore = FirebaseFirestore.getInstance();
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
btnSignIn = (Button) findViewById(R.id.sign_in_button);
btnSignUp = (Button) findViewById(R.id.sign_up_button);
inputEmail = (EditText) findViewById(R.id.email);
firstName = (EditText) findViewById(R.id.firstName);
inputPassword = (EditText) findViewById(R.id.password);
btnResetPassword = (Button) findViewById(R.id.btn_reset_password);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
btnResetPassword.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(RegisterActivity.this, ResetPasswordActivity.class));
}
});
btnSignIn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(RegisterActivity.this, LoginActivity.class));
finish();
}
});
authStateListener = new FirebaseAuth.AuthStateListener() {
FirebaseUser firebaseUser = mAuth.getCurrentUser();
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
if (firebaseUser != null) {
Intent intent = new Intent(RegisterActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
}
};
btnSignUp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String name= firstName.getText().toString().trim();
String email = inputEmail.getText().toString().trim();
String password = inputPassword.getText().toString().trim();
if (TextUtils.isEmpty(name)) {
Toast.makeText(getApplicationContext(), "Name cannot be empty!", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(email)) {
Toast.makeText(getApplicationContext(), "Email cannot be empty!", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(password)) {
Toast.makeText(getApplicationContext(), "Password cannot be empty!", Toast.LENGTH_SHORT).show();
return;
}
if (password.length() < 6) {
Toast.makeText(getApplicationContext(), "Password is too short, enter minimum of 6 characters!", Toast.LENGTH_SHORT).show();
return;
}
progressBar.setVisibility(View.VISIBLE);
mAuth.createUserWithEmailAndPassword(email, password)
.addOnCompleteListener(RegisterActivity.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
FirebaseUser user = task.getResult().getUser();
progressBar.setVisibility(View.GONE);
if (task.isSuccessful()) {
String fName = firstName.getText().toString().trim();
String userEmail = inputEmail.getText().toString().trim();
String uid = FirebaseAuth.getInstance().getUid();
String tokenId = FirebaseInstanceId.getInstance().getToken();
Boolean hasAcceptedToc = true;
@SuppressLint("SimpleDateFormat") String accountCreationTimestamp = new SimpleDateFormat("yyyy:MM:dd_HH:mm:ss").format(Calendar.getInstance().getTime());
UserModel userModel = new UserModel(fName, userEmail, uid, tokenId,
accountCreationTimestamp, hasAcceptedToc);
mFirestore.collection("users").document(userEmail)
.set(userModel).addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
Toast.makeText(RegisterActivity.this, "Account created successfully!", Toast.LENGTH_SHORT).show();
}
});
startActivity(new Intent(RegisterActivity.this, MainActivity.class));
finish();
} else {
Toast.makeText(RegisterActivity.this, "Failed to create account", Toast.LENGTH_SHORT).show();
}
}
});
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
menu.findItem(R.id.action_Close).setVisible(false); //hide cancel button
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.item_settings:
startActivity(new Intent(getApplicationContext(), TabMenu.class));
return true;
case R.id.item_backup:
startActivity(new Intent(getApplicationContext(), AccountPageActivity.class));
return true;
case R.id.item_rhPlus:
startActivity(new Intent(getApplicationContext(), LoginActivity.class));
return true;
case R.id.item_usageguide:
startActivity(new Intent(getApplicationContext(), ExpenseCreation.class));
return true;
case R.id.item_aboutUs:
startActivity(new Intent(getApplicationContext(), AboutUs.class));
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
RegisterActivity.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".login.RegisterActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="@layout/toolbar"/>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/colorPrimaryDark"
android:gravity="center"
android:orientation="vertical"
android:padding="@dimen/activity_horizontal_margin">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="40dp"
android:text="@string/app_name"
android:textSize="30sp"/>
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:id="@+id/firstName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/first_Name"
android:inputType="textPersonName"
android:maxLines="1"
android:singleLine="true"
android:textColor="@android:color/black" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:id="@+id/email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/email"
android:inputType="textEmailAddress"
android:maxLines="1"
android:singleLine="true"
android:textColor="@android:color/black" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:passwordToggleEnabled="true">
<EditText
android:id="@+id/password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:focusableInTouchMode="true"
android:hint="Create a password"
android:imeOptions="actionUnspecified"
android:inputType="textPassword"
android:maxLines="1"
android:singleLine="true"
android:textColor="@android:color/white" />
</android.support.design.widget.TextInputLayout>
<TextView
android:id="@+id/tv_toc"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/toc_remind" />
<Button
android:id="@+id/sign_up_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:background="@color/colorAccent"
android:text="@string/action_sign_in_short"
android:textColor="@android:color/black"
android:textAllCaps="false"/>
<Button
android:id="@+id/btn_reset_password"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:background="@color/colorAccent"
android:text="@string/btn_forgot_password"
android:textAllCaps="false"
android:textColor="@android:color/black" />
<!-- Link to Login Screen -->
<Button
android:id="@+id/sign_in_button"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:background="@color/colorAccent"
android:elevation="0dp"
android:text="@string/btn_link_to_login"
android:textAllCaps="false"
android:textColor="@android:color/black"
android:textSize="15sp" />
</LinearLayout>
<ProgressBar
android:id="@+id/progressBar"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center|bottom"
android:layout_marginBottom="20dp"
android:visibility="gone" />
</android.support.design.widget.CoordinatorLayout>
Styles.xml
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="windowNoTitle">true</item>
</style>
<!-- Used for Calender theme -->
<style name="DatePickerTheme" parent="android:Theme.Material.Light.Dialog">
<item name="android:colorPrimary">@color/red</item>
<!-- No need to override 'datePickerStyle' -->
<!-- <item name="android:datePickerStyle">@style/MyDatePickerStyle</item> -->
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
</resources>