实际上，我想为我的注销按钮添加功能。我尝试过，但没有发生。所以我在下面添加了我的 xml 代码以及我的 java 文件。非常感谢任何帮助。
这是我的 my_snap_fragment.xml 代码
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context=".AccountFragment"
android:background="@drawable/ic_launcher_background">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="339dp"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="41dp"
android:layout_marginBottom="465dp"
android:text=" QUOTE OF THE DAY"
android:textColor="@color/black"
android:textSize="30sp" />
<TextView
android:layout_width="296dp"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="49dp"
android:layout_marginBottom="272dp"
android:text="-She decided to start living
the life she imagined-"
android:textColor="@color/DarkRed"
android:textSize="25sp" />
<Button
android:layout_width="166dp"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="28dp"
android:layout_marginBottom="75dp"
android:background="@color/Pink"
android:text="LOG OUT"
android:textColor="@color/black"
android:textSize="20sp" />
</RelativeLayout>
这是我的 AccountFragment.java 文件
public class AccountFragment extends Fragment {
public AccountFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_account, container, false);
}
}
这是我的 loginpage.java 文件
public class loginpage extends AppCompatActivity {
EditText username;
EditText passwordd;
Button login, signnow;
FirebaseAuth mFirebaseAuth;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.loginpage);
username = (EditText) findViewById(R.id.username);
passwordd = (EditText) findViewById(R.id.passwordd);
login = (Button) findViewById(R.id.login);
signnow = (Button) findViewById(R.id.signnow);
mFirebaseAuth = FirebaseAuth.getInstance();
username = findViewById(R.id.username);
passwordd = findViewById(R.id.passwordd);
login = findViewById(R.id.login);
Button signnow = (Button) findViewById(R.id.signnow);
signnow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent p = new Intent(loginpage.this,new_user_register.class);
startActivity(p);
}
});
login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String userrname = username.getText().toString();
String password = passwordd.getText().toString();
if (userrname.isEmpty() && password.isEmpty()) {
Toast toast = Toast.makeText(getApplicationContext(), "PLEASE ENTER USERNAME AND PASSWORD", Toast.LENGTH_SHORT);
toast.show();
} else if (userrname.isEmpty()) {
Toast toast = Toast.makeText(getApplicationContext(), "ENTER USERNAME", Toast.LENGTH_SHORT);
toast.show();
} else if (!((username.length() > 6) && (username.length() < 15))) {
Toast toast = Toast.makeText(getApplicationContext(), "USERNAME IS TOO SHORT.IT MUST BE BETWEEN 6-15 CHARACTERS.", Toast.LENGTH_SHORT);
toast.show();
} else if (password.isEmpty()) {
Toast toast = Toast.makeText(getApplicationContext(), "ENTER PASSWORD", Toast.LENGTH_SHORT);
toast.show();
} else if (!((password.length() > 6) && (password.length() < 15))) {
Toast toast = Toast.makeText(getApplicationContext(), "PASSWORD IS TOO SHORT.IT MUST BE BETWEEN 6-15 CHARACTERS.", Toast.LENGTH_SHORT);
toast.show();
} else if (!(userrname.isEmpty() && password.isEmpty())){
mFirebaseAuth.createUserWithEmailAndPassword(userrname,password).addOnCompleteListener(loginpage.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if(!task.isSuccessful()){
Toast toast = Toast.makeText(getApplicationContext(), "LOGIN UNSUCCESSFUL", Toast.LENGTH_SHORT);
}
else {
startActivity(new Intent(loginpage.this,bottom_nav.class));
}
}
});
}else {
Intent i = new Intent(loginpage.this, bottom_nav.class);
startActivity(i);
}
}
});
}
}
这是我的 loginpage.xml 文件。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".loginpage"
android:background="@drawable/ic_launcher_background">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_centerInParent="true"
android:layout_marginEnd="152dp"
android:layout_marginBottom="549dp"
android:text="USER LOGIN"
android:textColor="@color/black"
android:textSize="30dp"
android:textStyle="bold|italic"
android:typeface="sans" />
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="37dp"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="220dp"
android:layout_marginBottom="450dp"
android:drawableLeft="@drawable/username_foreground"
android:text="USERNAME"
android:textColor="@color/Purple"
android:textSize="20dp" />
<EditText
android:id="@+id/username"
android:layout_width="283dp"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="88dp"
android:layout_marginBottom="393dp"
android:hint="ENTER USERNAME" />
<TextView
android:id="@+id/t3"
android:layout_width="144dp"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="211dp"
android:layout_marginBottom="330dp"
android:drawableLeft="@drawable/password_foreground"
android:text="PASSWORD"
android:textColor="@color/Purple"
android:textSize="20dp" />
<EditText
android:id="@+id/passwordd"
android:layout_width="284dp"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="85dp"
android:layout_marginBottom="273dp"
android:hint="ENTER PASSWORD" />
<Button
android:id="@+id/login"
android:layout_width="161dp"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="163dp"
android:layout_marginBottom="188dp"
android:background="@android:color/transparent"
android:text="LOGIN"
android:textColor="@color/Purple"
android:textSize="25dp" />
<ImageView
android:layout_width="100dp"
android:layout_height="110dp"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="-15dp"
android:layout_marginBottom="525dp"
android:src="@drawable/imaagee" />
<ImageView
android:layout_width="100dp"
android:layout_height="110dp"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="-15dp"
android:layout_marginBottom="408dp"
android:src="@drawable/image" />
<ImageView
android:layout_width="100dp"
android:layout_height="110dp"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="-15dp"
android:layout_marginBottom="292dp"
android:src="@drawable/iimagee" />
<ImageView
android:layout_width="100dp"
android:layout_height="110dp"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="-15dp"
android:layout_marginBottom="176dp"
android:src="@drawable/imagee" />
<ImageView
android:layout_width="100dp"
android:layout_height="110dp"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="-15dp"
android:layout_marginBottom="61dp"
android:src="@drawable/imageee" />
<Button
android:id="@+id/signnow"
android:layout_width="188dp"
android:layout_height="58dp"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginEnd="143dp"
android:layout_marginBottom="119dp"
android:background="@android:color/transparent"
android:text="SIGN IN NOW"
android:textColor="@color/Purple"
android:textSize="25dp" />
</RelativeLayout>