安卓開發界面代碼

今天寫一篇安卓登錄代碼，包括界面布局以及簡單密碼驗證，適合完成作業的同學，

<?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"
    android:background="#ffffff"
    tools:context=".activity.LoginActivity">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="329dp"
        android:scaleType="fitXY"
        android:src="@mipmap/login" />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="278dp"
        android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="230dp"
            android:layout_marginLeft="18dp"
            android:layout_marginRight="18dp"
            android:background="@drawable/shape_login_form"
            android:gravity="center"
            android:orientation="vertical"
            android:paddingLeft="43dp"
            android:paddingRight="31dp">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center_vertical"
                android:orientation="horizontal">

                <ImageView
                    android:layout_width="25dp"
                    android:layout_height="25dp"
                    android:src="@mipmap/account" />

                <EditText
                    android:id="@+id/et_account"

                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="20dp"
                    android:background="@null"
                    android:hint="@string/account_hint"
                    android:textColor="#000000"
                    android:textColorHint="#bcbcbc"
                    android:textSize="18sp" />
            </LinearLayout>

            <View
                android:layout_width="match_parent"
                android:layout_height="1dp"
                android:layout_marginTop="23dp"
                android:layout_marginBottom="23dp"
                android:background="#e8e7e7" />

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center_vertical"
                android:orientation="horizontal">

                <ImageView
                    android:layout_width="25dp"
                    android:layout_height="25dp"
                    android:src="@mipmap/pwd" />

                <EditText
                    android:id="@+id/et_pwd"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="20dp"
                    android:background="@null"
                    android:inputType="textPassword"
                    android:hint="@string/pwd_hint"
                    android:textColor="#000000"
                    android:textColorHint="#bcbcbc"
                    android:textSize="18sp" />
            </LinearLayout>

        </LinearLayout>

        <Button
            android:id="@+id/btn_login"
            android:layout_width="match_parent"
            android:layout_height="55dp"
            android:layout_marginLeft="18dp"
            android:layout_marginTop="67dp"
            android:layout_marginRight="18dp"
            android:background="@drawable/shape_login_btn_"
            android:text="@string/login"
            android:textColor="#ffffff"
            android:textSize="24sp" />

    </LinearLayout>
</RelativeLayout>

這是.xml檔案內代碼，

package com.example.myapp.activity;

import android.content.Intent;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import androidx.appcompat.app.AppCompatActivity;

import com.example.myapp.MainActivity;
import com.example.myapp.util.StringUtils;

import java.io.IOException;
import java.util.AbstractMap;
import java.util.HashMap;
import java.util.Map;

import android.os.Bundle;
import android.widget.Toast;
import com.google.gson.Gson;
import com.example.myapp.R;

public class LoginActivity<params> extends BaseActivity {

    private EditText etAccount;
    private EditText etPwd;
    private Button btnLogin;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        etAccount = findViewById(R.id.et_account);
        etPwd = findViewById(R.id.et_pwd);
        btnLogin = findViewById(R.id.btn_login);
        btnLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String account = etAccount.getText().toString().trim();//獲取輸入框文本
                String pwd = etPwd.getText().toString().trim();//獲取輸入密碼

                login(account, pwd);
            }
        });
    }

    private void login(String account, String pwd) {

        if (StringUtils.isEmpty(account)) {
            //Toast.makeText(this, "請輸入賬號", Toast.LENGTH_SHORT).show();
            showToast("請輸入賬號" );
            return;
        }
        if (StringUtils.isEmpty(pwd)) {
           // Toast.makeText(this, "請輸入密碼", Toast.LENGTH_SHORT).show();
            showToast("請輸入密碼" );
            return;
        }
        if(account.equals("123") && pwd.equals("123"))
        {
            Button btn= findViewById(R.id.btn_login);
            btn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Intent in = new Intent(LoginActivity.this, HomeActivity.class);
                    startActivity(in);
                }
            });
        } else
        {
            Toast.makeText(this, "輸入錯誤，請重新輸入", Toast.LENGTH_SHORT).show();
        }
    }
}

上面是.java檔案代碼，

本次專案呢適合簡單的入門同學，簡單和大家分享一下吧，

希望用了的朋友麻煩點個贊啦 其他的圖片你們自己替換就行，