Android记住密码后自动登录

/**
 * 
 * @author alex
 * @version 2014-7-31下午5:25:45
 *
 */
public class LoginActivity extends Activity {
private EditText name;
private EditText pass;
private CheckBox isRemenber;
private CheckBox isLoginSelf;
private Button longin;
private ProgressDialog mDialog;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        name=(EditText)findViewById(R.id.et_name);
        pass=(EditText)findViewById(R.id.et_pass);
        isRemenber=(CheckBox)findViewById(R.id.isremenber);
        isLoginSelf=(CheckBox)findViewById(R.id.isloginself);
        longin=(Button)findViewById(R.id.longin);
        
        final SharedPreferences pre=getSharedPreferences("longinvalue", MODE_WORLD_WRITEABLE);
        if(pre!=null){
        //记住了密码
           if(pre.getBoolean("isrmb", false)==true){
          name.setText(pre.getString("name", null));
          pass.setText(pre.getString("pass", null));
          isRemenber.setChecked(true) ;
           }
           if(pre.getBoolean("islgs", false)==true){
          isLoginSelf.setChecked(true);
          creatDialog();
          new Thread(){
          public void run() {
          try {


Thread.sleep(3000);
       if(mDialog.isShowing()){
     mDialog.dismiss();
     }
Intent intent2=new Intent(LoginActivity.this,Show.class);
startActivity(intent2);
} catch (Exception e) {
// TODO: handle exception
}
          }
          }.start();
           }
        }
        isRemenber.setOnCheckedChangeListener( new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
     if(isRemenber.isChecked()==false){
     isLoginSelf.setChecked(false);
     }
}
});
        isLoginSelf.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
 isRemenber.setChecked(true);
}
});
        longin.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(!name.getText().toString().equals("")&&!pass.getText().toString().equals("")){
if(isLoginSelf.isChecked()){
pre.edit().putBoolean("isrmb", true).putBoolean("islgs", true).putString("name", name.getText().toString())
.putString("pass", pass.getText().toString()).commit();
}else{
if(isRemenber.isChecked()){
pre.edit().putBoolean("isrmb", true).putBoolean("islgs", false).putString("name", name.getText().toString())
.putString("pass", pass.getText().toString()).commit();
}else{
pre.edit().putBoolean("isrmb", false).putBoolean("islgs", false).putString("name", name.getText().toString())
.putString("pass", pass.getText().toString()).commit();
}
}
Intent intent=new Intent(LoginActivity.this,Show.class);
startActivity(intent);
}else{
Toast.makeText(getApplicationContext(), "密码或账号不能为空！", Toast.LENGTH_LONG).show();
}


}
});
    }
    private void creatDialog() {
     mDialog=new ProgressDialog(this);
     mDialog.setTitle("验证中");
     mDialog.setMessage("正在登陆请稍后");
     mDialog.setIndeterminate(true);
     mDialog.setCancelable(true);
     mDialog.show();
      
}
}

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


public class Show extends Activity{
  @Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.show);
}
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="alex.sias.com"
    android:versionCode="1"
    android:versionName="1.0" >


    <uses-sdk android:minSdkVersion="8" />


    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" >
    </uses-permission>


    <application
        android:icon="@drawable/icon"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
        <activity
            android:name=".LoginActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />


                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="Show" >
        </activity>
    </application>


</manifest>

用到两个布局文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/chat_bg_default"
    >
    <TextView 
    android:layout_height="50dp"
    android:layout_width="fill_parent"
    android:gravity="center"
    android:textSize="24sp"
    android:text="登录界面"
    android:textColor="@color/white"
    android:background="@drawable/song_index_item_bg"/>
    <ImageView 
    android:id="@+id/iv"
    android:layout_height="220dp"
    android:layout_width="230dp"
    android:layout_marginTop="110dp"
    android:src="@drawable/background"
    android:layout_centerHorizontal="true"
    android:scaleType="fitXY"/>
    <TextView 
    android:id="@+id/tv_name"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:textSize="15sp"
    android:layout_marginTop="7dp"
    android:text="账号："
    android:layout_alignLeft="@+id/iv"
    android:layout_alignTop="@+id/iv"
    android:layout_marginLeft="7dp"
    android:textColor="@color/green"/>
    <EditText 
    android:id="@+id/et_name"
    android:layout_height="25dp"
    android:layout_width="210dp"
    android:layout_marginTop="7dp"
    android:layout_below="@+id/tv_name"
    android:background="@drawable/shape"
    android:layout_alignLeft="@+id/tv_name"/>
    <TextView 
    android:id="@+id/tv_pass"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:textSize="15sp"
    android:text="密码："
    android:layout_alignLeft="@+id/tv_name"
    android:layout_below="@+id/et_name"
    android:layout_marginTop="7dp"
    android:textColor="@color/green"/>
    <EditText 
    android:id="@+id/et_pass"
    android:layout_height="25dp"
    android:layout_width="210dp"
    android:background="@drawable/shape"
    android:layout_marginTop="7dp"
    android:layout_below="@+id/tv_pass"
    android:layout_alignLeft="@+id/tv_name"/>
    <CheckBox 
    android:id="@+id/isremenber"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:layout_alignLeft="@+id/tv_name"
    android:layout_marginTop="10dp"
    android:text="记住密码"
    android:textSize="11sp"
    android:textColor="@color/huise"
    android:layout_below="@+id/et_pass"
    android:button="@drawable/mycheckbox"/>
    <CheckBox 
    android:id="@+id/isloginself"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:layout_alignRight="@+id/et_name"
    android:layout_marginTop="10dp"
    android:text="自动登录"
    android:textSize="11sp"
    android:textColor="@color/huise"
    android:layout_below="@+id/et_pass"
    android:button="@drawable/mycheckbox"/>
    <Button 
    android:id="@+id/longin"
    android:layout_height="25dp" 
    android:layout_width="210dp"
    android:layout_below="@+id/isloginself"
    android:layout_alignLeft="@+id/et_pass"
    android:layout_marginTop="10dp"
    android:text="登录"
    android:gravity="center"
    android:background="@drawable/loginbtn"/>
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@color/white">
  <TextView 
  android:layout_height="fill_parent"
  android:layout_width="fill_parent"
  android:text="嘿嘿!"
  android:textSize="40sp"
  android:gravity="center"/>
    
</LinearLayout>