实现自动登录和记住密码

来源：互联网发布：zigbee协议栈编程编辑：程序博客网时间：2024/05/18 03:39

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.CheckBox;
import android.widget.EditText;

public class LoginActivity extends Activity {

   private CheckBox mima;
   private CheckBox auto;
   private EditText et_name;
   private EditText et_psd;
   private SharedPreferences sp;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_login);
       //初始化控件
       et_name = (EditText) findViewById(R.id.et_name);
       et_psd = (EditText) findViewById(R.id.et_psd);
       mima = (CheckBox) findViewById(R.id.mima);
       auto = (CheckBox) findViewById(R.id.auto);
       //初始化sp
       sp = getSharedPreferences("config", MODE_PRIVATE);


       String name2 = sp.getString("name2", null);
       String psd2 = sp.getString("psd2", null);
       if(TextUtils.isEmpty(name2)||TextUtils.isEmpty(psd2))
       {
       }
       else
       {
           Intent intent=new Intent(LoginActivity.this,FriendActivity.class);
           startActivity(intent);
       }
       boolean checked = sp.getBoolean("checked", false);
       if(checked)
       {
           //实现第二次进入页面处选中状态于
           mima.setChecked(true);

           //获取sp中的信息
           String name = sp.getString("name", "");
           String psd = sp.getString("psd", "");
           //将获取信息给Edittext 用于显示
           et_name.setText(name);
           et_psd.setText(psd);
       }
   }
   //button的点击事件
   public void login(View v){

//记住密码

        //获取edittext输入的信息
       String name = et_name.getText().toString().trim();
       String psd = et_psd.getText().toString().trim();

       Editor edit = sp.edit();
       //复选框默认选中
       boolean checked = mima.isChecked();

       //如果勾选了
       if(checked)
       {
           edit.putString("name", name);
           edit.putString("psd", psd);
           //checkbox的勾选状态
           edit.putBoolean("checked", true);
           edit.commit();
       }
       else
       {
           edit.putString("name", null);
           edit.putString("psd", null);
           //checkbox的勾选状态
           edit.putBoolean("checked", false);
           edit.commit();
       }

//自动登录

        boolean checked2 = auto.isChecked();
       if(checked2)
       {
           Editor edit2 = sp.edit();

           edit2.putString("name2", name);
           edit2.putString("psd2", psd);
           edit2.commit();
           Intent intent=new Intent(LoginActivity.this,FriendActivity.class);
           startActivity(intent);
       }
       else
       {
           Intent intent=new Intent(LoginActivity.this,FriendActivity.class);
           startActivity(intent);

       }
   }
}

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