Android登陆注册逻辑 Android实现简易登陆注册逻辑的实例代码
青丝缠光阴 人气:0想了解Android实现简易登陆注册逻辑的实例代码的相关内容吗，青丝缠光阴在本文为您仔细讲解Android登陆注册逻辑的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：android登陆注册逻辑,android登陆注册功能,android登录功能实现，下面大家一起来学习吧。
大家好，今天给大家带来Android制作登录和注册功能的实现，当我们面临制作登录和注册功能的实现时，我们需要先设计登录界面的布局和注册界面的布局，做到有完整的思路时才开始实现其功能效果会更好。
activity_login
<?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">
<TextView
android:id="@+id/tv_username"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_marginStart="40dp"
android:layout_marginTop="100dp"
android:gravity="center_vertical"
android:text="账号："
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/tv_password"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_marginStart="40dp"
android:gravity="center_vertical"
android:text="密码："
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="@id/tv_username" />
<EditText
android:id="@+id/ed_username"
android:layout_width="300dp"
android:layout_height="40dp"
android:layout_marginTop="100dp"
app:layout_constraintLeft_toRightOf="@id/tv_username"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="@+id/ed_password"
android:layout_width="300dp"
android:inputType="textPassword"
android:layout_height="40dp"
app:layout_constraintLeft_toRightOf="@id/tv_password"
app:layout_constraintTop_toBottomOf="@id/ed_username" />
<Button
android:id="@+id/bu_login"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="300dp"
android:text="登录"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@id/bu_register"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/bu_register"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="300dp"
android:text="注册"
app:layout_constraintLeft_toRightOf="@id/bu_login"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
LoginActivity
package com.jld.exam;
import android.content.Intent;
import android.os.Bundle;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
public class LoginActivity extends AppCompatActivity {
EditText ed_username;
EditText ed_password;
Button bu_login;
Button bu_register;
String username;
String password;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
ed_username = findViewById(R.id.ed_username);
ed_password = findViewById(R.id.ed_password);
bu_login = findViewById(R.id.bu_login);
bu_register = findViewById(R.id.bu_register);
//登录按钮监听
bu_login.setOnClickListener(v -> {
username = ed_username.getText().toString();
password = ed_password.getText().toString();
//登陆的简单逻辑
if (username.equals("")) {
Toast.makeText(LoginActivity.this, "请输入用户名", Toast.LENGTH_SHORT).show();
} else if (password.equals("")) {
Toast.makeText(LoginActivity.this, "请输入密码", Toast.LENGTH_SHORT).show();
} else if (!username.equals("root") || !password.equals("123456")) {
Toast.makeText(LoginActivity.this, "用户名或密码错误", Toast.LENGTH_SHORT).show();
} else {
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
}
});
//注册按钮监听
bu_register.setOnClickListener(v -> {
Intent intent = new Intent(LoginActivity.this, RegisterActivity.class);
startActivity(intent);
});
}
}
activity_main
<?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">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="商品列表"
android:layout_marginBottom="30dp"
android:gravity="center_horizontal"/>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
MainActivity
package com.jld.exam;
import android.graphics.Color;
import android.os.Bundle;
import android.widget.LinearLayout;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
public class MainActivity extends AppCompatActivity {
RecyclerViewAdapter recyclerViewAdapter;
private final int[] icno = {R.drawable.clock, R.drawable.signal, R.drawable.box,
R.drawable.second, R.drawable.elephone, R.drawable.ff, R.drawable.notebook, R.drawable.mark, R.drawable.yx,
R.drawable.shop, R.drawable.theme, R.drawable.xl,};
private final String[] name = {"时钟", "信号", "宝箱", "秒钟", "大象", "FF", "记事本", "书签", "印象", "商店", "主题", "迅雷"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);//GridLayoutManager
GridLayoutManager gridLayoutManager = new GridLayoutManager(MainActivity.this, 3);//创建recyclerview
RecyclerView recyclerView = findViewById(R.id.recycler);//设定布局管理器
recyclerView.setLayoutManager(gridLayoutManager);//创建适配器
recyclerViewAdapter = new RecyclerViewAdapter(icno, name);
recyclerView.setAdapter(recyclerViewAdapter);//设定适配器
}
}
activity_register
<?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">
<TextView
android:id="@+id/textView0"
android:layout_width="match_parent"
android:layout_height="60dp"
android:gravity="center"
android:text="用户注册"
android:textSize="30sp"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/textView1"
android:layout_width="100dp"
android:layout_height="40dp"
android:drawableStart="@drawable/account"
android:gravity="center_vertical"
android:text="用户名:"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="@id/textView0" />
<EditText
android:id="@+id/editText1"
android:layout_width="300dp"
android:layout_height="40dp"
android:layout_weight="10"
android:autofillHints=""
android:gravity="center_horizontal"
android:inputType="text"
app:layout_constraintLeft_toRightOf="@id/textView1"
app:layout_constraintTop_toBottomOf="@id/textView0" />
<TextView
android:id="@+id/textView2"
android:layout_width="100dp"
android:layout_height="40dp"
android:layout_weight="2"
android:drawableStart="@drawable/password"
android:gravity="center_vertical"
android:text="新密码:"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="@id/textView1" />
<EditText
android:id="@+id/editText2"
android:layout_width="300dp"
android:layout_height="40dp"
android:layout_weight="10"
android:autofillHints=""
android:gravity="center_horizontal"
android:inputType="textPassword"
app:layout_constraintLeft_toRightOf="@id/textView2"
app:layout_constraintTop_toBottomOf="@id/editText1" />
<TextView
android:id="@+id/textView5"
android:layout_width="100dp"
android:layout_height="40dp"
android:drawableStart="@drawable/phone"
android:gravity="center_vertical"
android:text="手机电话:"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="@id/textView2" />
<EditText
android:id="@+id/editText5"
android:layout_width="300dp"
android:layout_height="40dp"
android:layout_weight="10"
android:autofillHints=""
android:gravity="center_horizontal"
android:inputType="phone"
app:layout_constraintLeft_toRightOf="@id/textView5"
app:layout_constraintTop_toBottomOf="@id/editText2" />
<TextView
android:id="@+id/textView7"
android:layout_width="100dp"
android:layout_height="40dp"
android:drawableStart="@drawable/email"
android:gravity="center_vertical"
android:text="E_mail:"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="@id/editText5" />
<EditText
android:id="@+id/editText7"
android:layout_width="300dp"
android:layout_height="40dp"
android:layout_weight="10"
android:autofillHints=""
android:gravity="center_horizontal"
android:inputType="textEmailAddress"
app:layout_constraintLeft_toRightOf="@id/textView7"
app:layout_constraintTop_toBottomOf="@id/editText5" />
<TextView
android:id="@+id/textView8"
android:layout_width="100dp"
android:layout_height="40dp"
android:drawableStart="@drawable/gender"
android:gravity="center_vertical"
android:text="性别:"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="@id/textView7" />
<RadioGroup
android:id="@+id/radioGroup8"
android:layout_width="300dp"
android:layout_height="40dp"
android:layout_weight="10"
android:gravity="center_vertical"
android:orientation="horizontal"
app:layout_constraintLeft_toRightOf="@id/textView8"
app:layout_constraintTop_toBottomOf="@id/editText7">
<RadioButton
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="女" />
<RadioButton
android:id="@+id/radioButton2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="男" />
</RadioGroup>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:text="保存"
app:layout_constraintEnd_toStartOf="@id/button2"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/radioGroup8" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:text="取消"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@id/button1"
app:layout_constraintTop_toBottomOf="@id/radioGroup8" />
</androidx.constraintlayout.widget.ConstraintLayout>
RegisterActivity
package com.jld.exam;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
public class RegisterActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
}
}
recyc_item
<?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="wrap_content"
android:orientation="vertical">
<ImageView
android:id="@+id/iv_image"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_gravity="center_horizontal"
android:contentDescription="TODO"
android:scaleType="centerInside"
android:src="@drawable/ic_launcher_background" />
<TextView
android:id="@+id/tv_desc"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:hint="销售价格"
android:textSize="14sp" />
</LinearLayout>
RecyclerViewAdapter
package com.jld.exam;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
private final int[] icno;
private final String[] desc;
public RecyclerViewAdapter(int[] icno, String[] desc) {
this.icno = icno;
this.desc = desc;
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recyc_item, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
holder.imageView.setImageResource(icno[position]);
holder.textView.setText(desc[position]);
}
@Override
public int getItemCount() {
return icno.length;
}
//ViewHolder
public static class ViewHolder extends RecyclerView.ViewHolder {
View item;
ImageView imageView;
TextView textView;
public ViewHolder(@NonNull View itemView) {
super(itemView);
item = itemView;
imageView = itemView.findViewById(R.id.iv_image);
textView = itemView.findViewById(R.id.tv_desc);
}
}
}
总结
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