27 登录模板

登录模板

 

 主界面：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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=".MainActivity">

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:orientation="vertical"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0"
        android:padding="10dp">

        <TextView
            android:id="@+id/TextView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Launch Your App"
            android:textSize="30sp"
            android:textStyle="bold"
            android:gravity="center"/>

        <TextView
            android:id="@+id/tv_status"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="140dp"
            android:text=""
            android:textSize="20sp"
            android:textStyle="bold"
            android:gravity="center"/>

        <TextView
            android:id="@+id/tv_id"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:text=""
            android:textSize="17sp"
            android:textStyle="bold"
            android:gravity="center" />

        <TextView
            android:id="@+id/tv_email"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:text=""
            android:textSize="17sp"
            android:textStyle="bold"
            android:gravity="center"/>

        <Button
            android:id="@+id/btn_start_register"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/holo_blue_bright"
            android:textStyle="bold"
            android:onClick="btn_start_register_onclick"
            android:layout_marginTop="30dp"
            android:text="register" />

        <Button
            android:id="@+id/btn_start_signin"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/holo_blue_bright"
            android:textStyle="bold"
            android:onClick="btn_start_siginin_onclick"
            android:layout_marginTop="10dp"
            android:text="sign in" />
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

注册界面：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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=".RegisterActivity">

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:orientation="vertical"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0"
        android:padding="10dp">

        <TextView
            android:id="@+id/TextView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Register"
            android:textSize="22sp"
            android:textStyle="bold"
            android:gravity="center"/>

        <EditText
            android:id="@+id/et_reg_email"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="30dp"
            android:ems="10"
            android:hint="Email"
            android:maxLines="1"
            android:inputType="textEmailAddress"
            android:text="" />

        <EditText
            android:id="@+id/et_reg_id"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:ems="10"
            android:hint="ID"
            android:maxLines="1"
            android:inputType="textPersonName"
            android:text="" />

        <EditText
            android:id="@+id/et_reg_password"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:ems="10"
            android:hint="Password"
            android:maxLines="1"
            android:inputType="textPassword" />

        <Button
            android:id="@+id/btn_reg_submit"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/holo_blue_bright"
            android:textStyle="bold"
            android:layout_marginTop="30dp"
            android:onClick="btn_start_register_onclick"
            android:text="register" />

    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

登录界面：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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=".SigninActivity">

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:orientation="vertical"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0"
        android:padding="10dp">

        <TextView
            android:id="@+id/TextView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Sign in"
            android:textSize="22sp"
            android:textStyle="bold"
            android:gravity="center"/>

        <EditText
            android:id="@+id/et_signin_id"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:ems="10"
            android:hint="ID"
            android:maxLines="1"
            android:inputType="textPersonName"
            android:text="" />

        <EditText
            android:id="@+id/et_signin_password"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:ems="10"
            android:hint="Password"
            android:maxLines="1"
            android:inputType="textPassword" />

        <Button
            android:id="@+id/btn_signin_submit"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/holo_blue_bright"
            android:textStyle="bold"
            android:onClick="btn_start_siginin_onclick"
            android:layout_marginTop="30dp"
            android:text="Sign in" />

    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java：

package com.example.myexerclse;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    private TextView tvStatus;
    private TextView tvId;
    private TextView tvEmail;

    private static final int REQUEST_REGISTER_CODE=1;
    private static final int REQUEST_SIGNIN_CODE=0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tvStatus=findViewById(R.id.tv_status);
        tvId=findViewById(R.id.tv_id);
        tvEmail=findViewById(R.id.tv_email);
    }

    public void btn_start_siginin_onclick(View view) {
        Intent intent=new Intent(this,SigninActivity.class);
        startActivityForResult(intent,REQUEST_SIGNIN_CODE);
    }

    public void btn_start_register_onclick(View view) {
        Intent intent=new Intent(this,RegisterActivity.class);
        startActivityForResult(intent,REQUEST_REGISTER_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent intent) {
        super.onActivityResult(requestCode, resultCode, intent);
        if(intent==null){
            return;
        }
        switch (requestCode){
            case  REQUEST_REGISTER_CODE:
                tvStatus.setText("注册成功");
                tvId.setText("ID:"+intent.getStringExtra("id"));
                tvEmail.setText("Email:"+intent.getStringExtra("email"));
                break;
            case REQUEST_SIGNIN_CODE:
                tvStatus.setText("登录成功");
                tvId.setText("您好，"+intent.getStringExtra("id"));
                tvEmail.setText("");
                break;
        }
    }
}

注册代码：

package com.example.myexerclse;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

public class RegisterActivity extends AppCompatActivity {

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

    public void btn_start_register_onclick(View view) {
        EditText etId=findViewById(R.id.et_reg_id);
        EditText etEmail=findViewById(R.id.et_reg_email);
        EditText etPassword=findViewById(R.id.et_reg_password);
        Intent intent=new Intent();
        intent.putExtra("id",etId.getText().toString());
        intent.putExtra("email",etEmail.getText().toString());
        intent.putExtra("password",etPassword.getText().toString());
        setResult(1,intent);
        finish();
    }
}

登录代码:

package com.example.myexerclse;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

public class SigninActivity extends AppCompatActivity {

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

    public void btn_start_siginin_onclick(View view) {
        EditText etId=findViewById(R.id.et_signin_id);
        EditText etPassword=findViewById(R.id.et_signin_password);
        Intent intent=new Intent();
        intent.putExtra("id",etId.getText().toString());
        intent.putExtra("password",etPassword.getText().toString());
        setResult(0,intent);
        finish();
    }
}

运行截图：