Question

注册后，当我按下登录按钮时，会打开一个用户名和密码的对话框，之后在对话框中再次出现一个登录按钮，如果成功显示吐司，我想在吐司后导航到不同的页面但问题是再次从对话框登录后我必须按第一页的登录按钮

 public void signIn(View V)
    {
        final Dialog dialog = new Dialog(MainActivity.this);
        dialog.setContentView(R.layout.sign_in);
        dialog.setTitle("Login");

        // get the Refferences of views
        final EditText editTextUserName=(EditText)dialog.findViewById(R.id.editTextUserNameToLogin);
        final  EditText editTextPassword=(EditText)dialog.findViewById(R.id.editTextPasswordToLogin);

        Button btnSignIn=(Button)dialog.findViewById(R.id.buttonSignIn);

        // Set On ClickListener
        btnSignIn.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                // get The User name and Password
                String userName=editTextUserName.getText().toString();
                String password=editTextPassword.getText().toString();

                // fetch the Password form database for respective user name
                String storedPassword=loginDataBaseAdapter.getSinlgeEntry(userName);


                // check if the Stored password matches with  Password entered by user
                if(password.equals(storedPassword))
                {

                    Button next=(Button) findViewById(R.id.buttonSignIn);
                    next.setOnClickListener(new View.OnClickListener() {
                        public void onClick(View view) {
                            Intent myIntent = new Intent(view.getContext(), After_signin.class);
                            startActivityForResult(myIntent, 0);
                        }

                    });
                    Toast.makeText(MainActivity.this, "Congrats: Login Successfull", Toast.LENGTH_LONG).show();
                    dialog.dismiss();

                }
                else
                {
                    Toast.makeText(MainActivity.this, "User Name or Password does not match", Toast.LENGTH_LONG).show();
                }
            }
        });

        dialog.show();
    }

我的第一页的xml文件是

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".MainActivity"
    android:background="#d34754df">




    <Button
        android:id="@+id/buttonSignIN"
        android:layout_width="96dp"
        android:layout_height="wrap_content"

        android:text="Sign In"
        android:onClick="signIn"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true" />


    <Button
        android:id="@+id/buttonSignUP"
        android:layout_width="96dp"
        android:layout_height="wrap_content"
        android:text="Sign Up"
        android:layout_below="@+id/buttonSignIN"
        android:layout_alignLeft="@+id/buttonSignIN"
        android:layout_alignStart="@+id/buttonSignIN" />




    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="guest"
        android:textAllCaps="true"
        android:onClick="guest"

        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true"
        android:id="@+id/guest"
        />

</RelativeLayout>

对于sign_in页面，在对话框中打开

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <EditText
        android:id="@+id/editTextUserNameToLogin"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="User Name"
        android:ems="10" >
        <requestFocus />
    </EditText>

    <EditText
        android:id="@+id/editTextPasswordToLogin"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textPassword"
        android:hint="Password" />

    <Button
        android:id="@+id/buttonSignIn"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Sign In" />

</LinearLayout>

在这方面的任何帮助都会很棒。

在对话框中单击按钮时导航到不同的页面

0 个答案: