一、頁面搭建

<?xml version='1.0' encoding='utf-8'?><android.support.constraint.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'> <EditText android: android:layout_width='match_parent' android:layout_height='wrap_content' android:layout_marginStart='16dp' android:layout_marginLeft='16dp' android:layout_marginTop='32dp' android:layout_marginEnd='16dp' android:layout_marginRight='16dp' android:ems='10' android:hint='請輸入賬號' android:inputType='textPersonName' app:layout_constraintEnd_toEndOf='parent' app:layout_constraintStart_toStartOf='parent' app:layout_constraintTop_toTopOf='parent' /> <EditText android: android:layout_width='match_parent' android:layout_height='wrap_content' android:layout_marginStart='16dp' android:layout_marginLeft='16dp' android:layout_marginTop='8dp' android:layout_marginEnd='16dp' android:layout_marginRight='16dp' android:ems='10' android:hint='請輸入密碼' android:inputType='textPassword' app:layout_constraintEnd_toEndOf='parent' app:layout_constraintStart_toStartOf='parent' app:layout_constraintTop_toBottomOf='@+id/et_UserName' /> <CheckBox android: android:layout_width='wrap_content' android:layout_height='wrap_content' android:layout_marginTop='16dp' android:text='記住密碼' app:layout_constraintStart_toStartOf='@+id/et_Password' app:layout_constraintTop_toBottomOf='@+id/et_Password' /> <Button android: android:onClick='Login' android:layout_width='0dp' android:layout_height='wrap_content' android:layout_marginStart='24dp' android:layout_marginLeft='24dp' android:layout_marginEnd='24dp' android:layout_marginRight='24dp' android:text='安全登錄' app:layout_constraintBottom_toBottomOf='@+id/checkBox' app:layout_constraintEnd_toEndOf='parent' app:layout_constraintStart_toEndOf='@+id/checkBox' app:layout_constraintTop_toTopOf='@+id/checkBox' /></android.support.constraint.ConstraintLayout>

二、代碼實現

package com.hiscene.test;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.text.TextUtils;import android.view.View;import android.widget.CheckBox;import android.widget.EditText;import android.widget.Toast;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.FileReader;import java.io.OutputStream;import java.io.OutputStreamWriter;public class MainActivity extends AppCompatActivity { EditText et_userName; EditText et_password; CheckBox checkBox; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.login_layout); et_userName = findViewById(R.id.et_UserName); et_password = findViewById(R.id.et_Password); checkBox = findViewById(R.id.checkBox); LoadInfo(); } private void LoadInfo() { File file=new File('data/data/com.hiscene.test/usre.txt'); if (!file.exists()) return; try { FileReader reader = new FileReader(file); BufferedReader br=new BufferedReader(reader); String text=br.readLine(); String[] arr=text.split('#'); et_userName.setText(arr[0]); et_password.setText(arr[1]); checkBox.setChecked(true); br.close(); }catch (Exception e) { e.printStackTrace(); } } public void Login(View view) { String userName=et_userName.getText().toString().trim(); String password= et_password.getText().toString().trim(); if (TextUtils.isEmpty(userName)|| TextUtils.isEmpty(password)) { Toast.makeText(MainActivity.this, '用戶名或密碼不能為空！', Toast.LENGTH_SHORT).show(); return; } if (checkBox.isChecked()) { File file=new File('data/data/com.hiscene.test/usre.txt'); try {OutputStream out=new FileOutputStream(file);OutputStreamWriter osw=new OutputStreamWriter(out,'UTF-8');BufferedWriter writer=new BufferedWriter(osw);writer.write(userName+'#'+password);writer.flush();writer.close(); } catch (Exception e) {e.printStackTrace(); } } }}

總結

到此這篇關于Android制作登錄頁面并且記住賬號密碼功能的實現代碼的文章就介紹到這了,更多相關android 登錄頁面記住密碼內容請搜索好吧啦網以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持好吧啦網！