activity_main.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="com.example.gaoyue20180521.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/et_username"
android:layout_alignBottom="@+id/et_username"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="21dp"
android:layout_marginStart="21dp"
android:text="手机号"
android:id="@+id/textView2" />
<EditText
android:id="@+id/et_username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
android:ems="10"
android:hint="请输入手机号"
/>
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/et_password"
android:layout_alignBottom="@+id/et_password"
android:layout_alignLeft="@+id/textView2"
android:layout_alignStart="@+id/textView2"
android:text="密码" />
<EditText
android:id="@+id/et_password"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/et_username"
android:layout_alignStart="@+id/et_username"
android:layout_below="@+id/et_username"
android:layout_marginTop="47dp"
android:ems="10"
android:hint="请输入密码"
android:password="true"
/>
<CheckBox
android:id="@+id/ck_pwd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView"
android:layout_alignStart="@+id/textView"
android:layout_below="@+id/et_password"
android:layout_marginTop="44dp"
android:text="记住密码" />
<CheckBox
android:id="@+id/ck_login"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/ck_pwd"
android:layout_alignBottom="@+id/ck_pwd"
android:layout_alignEnd="@+id/et_password"
android:layout_alignRight="@+id/et_password"
android:text="自动登录" />
<Button
android:id="@+id/btn_login"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_below="@+id/ck_pwd"
android:layout_centerHorizontal="true"
android:layout_marginTop="71dp"
android:text="提交" />
</RelativeLayout>
MainActivity：
package com.example.gaoyue20180521;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private EditText et_username;
private EditText et_password;
private CheckBox ck_pwd;
private CheckBox ck_login;
private Button btn_login;
private SharedPreferences sp;
private String userNameValue;
private String passwordValue;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sp = this.getSharedPreferences("userInfo", Context.MODE_WORLD_READABLE);
et_username = (EditText) findViewById(R.id.et_username);
et_password = (EditText) findViewById(R.id.et_password);
ck_pwd = (CheckBox) findViewById(R.id.ck_pwd);
ck_login = (CheckBox) findViewById(R.id.ck_login);
btn_login = (Button) findViewById(R.id.btn_login);
//判断记住密码多选框的状态
if (sp.getBoolean("ISCHECK", false)) {
//设置默认是记录密码状态
ck_pwd.setChecked(true);
et_username.setText(sp.getString("USER_NAME", ""));
et_password.setText(sp.getString("PASSWORD", ""));
//判断自动登陆多选框状态
if (sp.getBoolean("AUTO_ISCHECK", false)) {
//设置默认是自动登录状态
ck_login.setChecked(true);
//跳转界面
Intent intent = new Intent(MainActivity.this, Main2Activity.class);
MainActivity.this.startActivity(intent);
finish();
}
}
// 登录监听事件 现在默认为用户名为：liu 密码：123
btn_login.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
userNameValue = et_username.getText().toString();
passwordValue = et_password.getText().toString();
if (userNameValue.equals("13800138000") && passwordValue.equals("123456")) {
Toast.makeText(MainActivity.this, "登录成功", Toast.LENGTH_SHORT).show();
//登录成功和记住密码框为选中状态才保存用户信息
if (ck_pwd.isChecked()) {
//记住用户名、密码、
SharedPreferences.Editor editor = sp.edit();
editor.putString("USER_NAME", userNameValue);
editor.putString("PASSWORD", passwordValue);
editor.commit();
}
//跳转界面
Intent intent = new Intent(MainActivity.this, Main2Activity.class);
MainActivity.this.startActivity(intent);
finish();
} else {
Toast.makeText(MainActivity.this, "用户名或密码错误，请重新登录", Toast.LENGTH_LONG).show();
}
}
});
//监听记住密码多选框按钮事件
ck_pwd.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (ck_pwd.isChecked()) {
System.out.println("记住密码已选中");
sp.edit().putBoolean("ISCHECK", true).commit();
} else {
System.out.println("记住密码没有选中");
sp.edit().putBoolean("ISCHECK", false).commit();
}
}
});
//监听自动登录多选框事件
ck_login.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (ck_login.isChecked()) {
System.out.println("自动登录已选中");
sp.edit().putBoolean("AUTO_ISCHECK", true).commit();
} else {
System.out.println("自动登录没有选中");
sp.edit().putBoolean("AUTO_ISCHECK", false).commit();
}
}
});
}
}