安卓登陆框记住密码和自动登录的实现(登陆界面android)

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效果图：

1.在AndroidMainfest文件中注册activity；运行了下还是不行

2.在MainActivity.java文件中的Intent intent = new Intent();intent.setClass(MainActivity.this, SuccessActivity1.class);这两句后边加这一句 startActivity(intent);3.替换文件，改包名：package com.example.minitwittersimulate;4.创建home.xml文件5.创建LoginActivity.java文件6.将LoginActivity.java中的MainActivity改为LoginAvtivity 此时运行显示错误，因为没有在AndroidMainfest.xml文件中注册LoginActivity

7.在AndroidMainfest中注册Activity。

8.运行成功！

LoginActivity.java

package com.example.minitwittersimulate;

import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.Window;import android.app.Activity;import android.content.Intent;import android.content.SharedPreferences;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.CheckBox;import android.widget.EditText;import android.widget.Toast;

public class LoginActivity extends Activity { private EditText etUsername; private EditText etPassword; private CheckBox cbRememberPass; private CheckBox autologin1; private Button btnLogin ; private SharedPreferences sp; private String userNameValue,passwordValue;

@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_main); // 初始化用户名、密码、记住密码、自动登录、登录按钮 etUsername = (EditText) findViewById(R.id.etUsername); etPassword = (EditText) findViewById(R.id.etPassword); cbRememberPass = (CheckBox) findViewById(R.id.cbRememberPass); autologin1 = (CheckBox) findViewById(R.id.autologin1); btnLogin = (Button) findViewById(R.id.btnLogin);

sp = getSharedPreferences("userInfo", 0); String name=sp.getString("USER_NAME", ""); String pass =sp.getString("PASSWORD", "");

boolean choseRemember =sp.getBoolean("cbRememberPass", false); boolean choseAutoLogin =sp.getBoolean("autologin1", false); //如果上次选了记住密码，那进入登录页面也自动勾选记住密码，并填上用户名和密码 if(choseRemember){ etUsername.setText(name); etPassword.setText(pass); cbRememberPass.setChecked(true); } //如果上次登录选了自动登录，那进入登录页面也自动勾选自动登录 if(choseAutoLogin){ autologin1.setChecked(true); } btnLogin.setOnClickListener(new OnClickListener() { // 默认可登录帐号xs,密码 @Override public void onClick(View arg0) { userNameValue = etUsername.getText().toString(); passwordValue = etPassword.getText().toString(); SharedPreferences.Editor editor =sp.edit(); // TODO Auto-generated method stub if (userNameValue.equals("wx") && passwordValue.equals("")) { Toast.makeText(LoginActivity.this, "登录成功", Toast.LENGTH_SHORT).show(); //保存用户名和密码 editor.putString("USER_NAME", userNameValue); editor.putString("PASSWORD", passwordValue); //是否记住密码 if(cbRememberPass.isChecked()){ editor.putBoolean("cbRememberPass", true); }else{ editor.putBoolean("cbRememberPass", false); }

//是否自动登录 if(autologin1.isChecked()){ editor.putBoolean("autologin1", true); }else{ editor.putBoolean("autologin1", false); } editor.commit(); //跳转 //Intent intent =new Intent(MainActivity.this,SuccessActivity1.class); //startActivity(intent); Intent intent = new Intent(); intent.setClass(LoginActivity.this, SuccessActivity1.class); startActivity(intent); } else { Toast.makeText(LoginActivity.this, "用户名或密码错误，请重新登录!", Toast.LENGTH_SHORT).show(); }

}

});

}

@Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; }

}

package com.example.minitwittersimulate;

import android.app.Activity;import android.content.Intent;import android.content.SharedPreferences;import android.os.Bundle;import android.view.View;import android.widget.TextView;import android.widget.Toast;

public class MainActivity extends Activity { private SharedPreferences sp; private TextView talk; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.home); talk =(TextView) findViewById(R.id.talk); sp=getSharedPreferences("userInfo", 0); String name =sp.getString("USER_NAME", ""); boolean choseAutoLogin =sp.getBoolean("autologin1", false); if(choseAutoLogin){ talk.setVisibility(0); talk.setText(name&#;"自动登录成功"); }

} //跳转到登录页面 public void go(View v){ Intent intent =new Intent(this, LoginActivity.class); startActivity(intent); } //点击退出销毁登录记录 public void out(View v){ SharedPreferences spout =getSharedPreferences("userInfo", 0); SharedPreferences.Editor ed =spout.edit(); ed.clear(); ed.commit(); Toast.makeText(this, "销毁记录", Toast.LENGTH_SHORT).show(); }}

SuccessActiviy.java

package com.example.minitwittersimulate;

import android.app.Activity;import android.os.Bundle;import android.view.View;

public class SuccessActivity1 extends Activity {

protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.sucess); } public void outactivity(View v){ System.exit(0); }}

activity_main.xml

<LinearLayout xmlns:android=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:background="@drawable/loginbg" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".MainActivity" >

<include layout="@layout/login_top"/>

<include layout="@layout/login_bottom" />

"

</LinearLayout>

home.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android=" android:layout_width="match_parent" android:layout_height="match_parent"

android:orientation="vertical" >

<TextView android:id="@&#;id/talk" android:layout_width="match_parent" android:layout_height="dp" android:text="文本" android:gravity="center" android:visibility="gone" /> <Button android:id="@&#;id/gologin" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="登录" android:onClick="go" /> <Button android:id="@&#;id/out" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="注销" android:onClick="out" /></LinearLayout>

login_bottom.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android=" android:layout_width="match_parent" android:layout_height="wrap_content" >

<TextView android:id="@&#;id/tvRegist" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_marginLeft="dp" android:layout_marginTop="dp" android:text="@string/tvRegister" android:autoLink="all" android:textColorLink="#FFCC" />

<ImageView android:id="@&#;id/imageView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:layout_marginBottom="dp" android:src="@drawable/icon" />

<ImageView android:id="@&#;id/imageView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@&#;id/imageView2" android:src="@drawable/jiqimao1" />

</RelativeLayout>

login_top.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android=" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/btnbg_roundcorner" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" >

<TextView android:id="@&#;id/tvUsername" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:text="@string/tvName" android:textAppearance="?android:attr/textAppearanceMedium" />

<EditText android:id="@&#;id/etUsername" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignLeft="@&#;id/tvUsername" android:layout_below="@&#;id/tvUsername" android:background="@android:drawable/edit_text" android:ems="" >

<requestFocus /> </EditText>

<TextView android:id="@&#;id/tvPassword" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@&#;id/etUsername" android:layout_below="@&#;id/etUsername" android:text="@string/tvPassword" android:textAppearance="?android:attr/textAppearanceMedium" />

<EditText android:id="@&#;id/etPassword" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignLeft="@&#;id/tvPassword" android:layout_below="@&#;id/tvPassword" android:layout_marginTop="dp" android:background="@android:drawable/edit_text" android:ems="" android:inputType="textPassword" />

<Button android:id="@&#;id/btnLogin" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignRight="@&#;id/etPassword" android:layout_below="@&#;id/etPassword" android:layout_marginTop="dp" android:background="#FFCAE1" android:text="@string/btnLogin" />

<CheckBox android:id="@&#;id/cbRememberPass" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@&#;id/etPassword" android:layout_alignTop="@&#;id/btnLogin" android:text="记住密码" />

<CheckBox android:id="@&#;id/autologin1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@&#;id/cbRememberPass" android:layout_below="@&#;id/cbRememberPass" android:text="自动登录" />

</RelativeLayout>

success.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android=" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" >

<TextView android:id="@&#;id/textView1" android:layout_width="match_parent" android:layout_height="dp" android:gravity="center" android:text="登录成功，重启程序才可以看到效果哦~" /> </LinearLayout>

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