Android登录记住多个密码的实现方法

先给大家说下我实现的思路：

在popouWindow里面加上ListView，数据是把List以字符串按照JSON的样式存入本地，先看看效果

adapter_user_item.xml是listView item中的布局，就一个图片按钮和一个显示按钮

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="#ffffff"
  android:gravity="center"
  android:minHeight="60dp"
  android:orientation="horizontal" >
  <TextView
    android:id="@+id/adapter_account_item_iphone"
    android:layout_width="0dip"
    android:layout_height="wrap_content"
    android:layout_marginLeft="20dp"
    android:layout_weight="1"
    android:background="@null"
    android:singleLine="true"
    android:textColor="@android:color/black"
    android:textSize="15sp" />
  <ImageView
    android:id="@+id/adapter_account_item_delete"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_vertical"
    android:paddingRight="20dp"
    android:scaleType="fitXY"
    android:src="@drawable/login_delete_account" />
</LinearLayout> 

login_pop_view.xml只是一个列表按钮

<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:dividerHeight="1dp"
android:background="@drawable/dialog_bottom_holo_light" /> 

UserAdapter.java是适配器，用来填充ListView，在里面增加一个接口，用来处理ListView中的删除账户信息功能，这个功能在Activity中实现

package com.weikong.adapter;
 import java.util.ArrayList;
import java.util.List;
import com.weikong.R;
import com.weikong.bean.User;
import com.weikong.views.LoginActivity;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.TextureView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class UserAdapter extends BaseAdapter{
  private List<User> listUsers = new ArrayList<User>();
  private Context context;
  // private LayoutInflater mLayoutInflater = null;
  private DeleteUser deleteUser;
  public void setDeleteUser(DeleteUser deleteUser) {
    this.deleteUser = deleteUser;
  }
  public UserAdapter(Context context){
    this.context = context;
  }
  public void setListUsers(List<User> listUsers){
    this.listUsers = listUsers;
    this.notifyDataSetChanged();
  }
  @Override
  public int getCount() {
    // TODO Auto-generated method stub
    return listUsers.size();
  }
  @Override
  public User getItem(int position) {
    // TODO Auto-generated method stub
    return listUsers.get(position);
  }
  @Override
  public long getItemId(int position) {
    // TODO Auto-generated method stub
    return 0;
  }
  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    UserHolder userHolder = null;
    if(convertView == null){
<span style="white-space:pre">     </span>//这里装载也要这样写
      convertView = LayoutInflater.from(parent.getContext())
          .inflate(R.layout.adapter_user_item,parent,false);
      userHolder = new UserHolder(convertView);
<span style="white-space:pre">     </span>//这个很重要哦
      userHolder.ivDelete.setTag(position);
      userHolder.ivDelete.setOnClickListener(new OnClickListener(){
        @Override
        public void onClick(View v) {
          deleteUser.deleteUserClick(v);
        }
      });
      convertView.setTag(userHolder);
    }else{
      userHolder = (UserHolder)convertView.getTag();
    }
    User user = getItem(position);
    Log.e("", user.getId());
    userHolder.tvAccount.setText(user.getId());
    userHolder.ivDelete.setImageResource(R.drawable.login_delete_account);
    return convertView;
  }
  class UserHolder{
    public TextView tvAccount;
    public ImageView ivDelete;
    public UserHolder(View v){
      tvAccount = (TextView)v.findViewById(R.id.adapter_account_item_iphone);
      ivDelete = (ImageView)v.findViewById(R.id.adapter_account_item_delete);
    }
  }
  public interface DeleteUser{
    public void deleteUserClick(View v);
  }
}
activity_login.xml 布局
[html] view plain copy
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:background="@android:color/white"
  android:orientation="vertical"
  android:paddingBottom="10dp" >
  <ImageView
    android:id="@+id/loginicon"
    android:layout_width="120dp"
    android:layout_height="120dp"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="10dp"
    android:contentDescription="@string/app_name"/>
  <LinearLayout
    android:id="@+id/mLayout"
    android:layout_width="300dp"
    android:layout_height="60dp"
    android:layout_below="@+id/loginicon"
    android:layout_centerHorizontal="true"
    android:gravity="center"
    android:layout_marginTop="30dp"
    android:background="@drawable/login_input_bg" >
    <EditText
      android:id="@+id/mobilenum"
      android:layout_width="0dip"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:layout_marginLeft="20dp"
      android:background="@null"
      android:hint="@string/please_input_phone"
      android:maxLength="11"
      android:singleLine="true"
      android:textSize="15sp"
      android:textColor="@android:color/black" />
    <ImageView
      android:id="@+id/login_iv_show_phone_list"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="center_vertical"
      android:layout_marginLeft="10dp"
      android:layout_marginRight="10dp"
      android:scaleType="fitXY"
      android:src="@drawable/ic_find_next_holo_light"/>
  </LinearLayout>
  <RelativeLayout
    android:id="@+id/pLayout"
    android:layout_width="300dp"
    android:layout_height="60dp"
    android:layout_below="@+id/mLayout"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="10dp"
    android:background="@drawable/login_input_bg" >
    <EditText
      android:id="@+id/pwd"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:layout_centerVertical="true"
      android:layout_marginLeft="20dp"
      android:layout_marginRight="20dp"
      android:background="@null"
      android:hint="@string/please_input_password"
      android:inputType="textPassword"
      android:singleLine="true"
      android:textColor="@android:color/black"/>
  </RelativeLayout>
  <Button
    android:id="@+id/dologin"
    android:layout_width="300dp"
    android:layout_height="60dp"
    android:layout_below="@+id/pLayout"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="30dp"
    android:background="@drawable/loginbtn_selector"
    android:text="@string/login"
    android:textColor="@android:color/white"
    android:textSize="@dimen/text_size_larger" />
  <RelativeLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:layout_marginLeft="10dp"
    android:layout_marginRight="10dp"
    android:layout_marginTop="10dp" >
    <Button
      android:id="@+id/forgetPassword"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignParentLeft="true"
      android:layout_marginTop="5dp"
      android:background="@null"
      android:text="@string/forget_password"
      android:textColor="@android:color/black"
      android:textSize="@dimen/text_size_larger" />
    <Button
      android:id="@+id/registerbtn"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignParentRight="true"
      android:layout_marginTop="5dp"
      android:background="@null"
      android:text="@string/register_new_custom"
      android:textColor="@android:color/black"
      android:textSize="@dimen/text_size_larger" />
  </RelativeLayout>
</RelativeLayout> 

现在就是在Activity中实现了

package com.weikong.views;
import java.util.ArrayList;
import java.util.List;
import com.weikong.R;
import com.weikong.adapter.UserAdapter;
import com.weikong.adapter.UserAdapter.DeleteUser;
import com.weikong.bean.User;
import com.weikong.tools.DateUtil;
import com.weikong.tools.Constants;
import com.weikong.tools.LocalInfoUtil;
import android.annotation.SuppressLint;
import android.app.ActionBar.LayoutParams;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.text.Editable;
import android.text.InputType;
import android.text.TextWatcher;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.view.View.OnTouchListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.PopupWindow.OnDismissListener;
/**
 *
 * @author dengyancheng
 * @version 1.0 —{2015-07-31} 登陆界面
 *
 */
public class TestActivity extends BaseActivity implements OnTouchListener,
OnItemClickListener,
OnFocusChangeListener,
DeleteUser,
TextWatcher,
OnDismissListener{
  private final static String TAG = LoginActivity.class.getName();
  private Context context;
  /**** 手机号、密码 ***/
  private EditText etPhone, etPassword;
  /**用来显示电话号码列表*/
  private ImageView ivShowPhoneList;
  /**存储电话与密码*/
  private List<User> listUsers = null;
  /**点击ivShowPhoneList图片弹出的会话框*/
  private PopupWindow popupWindow;
  /**在popupWindow中显示账户列表*/
  // Cprivate WrapListView wrapListView;
  private ListView wrapListView;
  /**适配器*/
  private UserAdapter userAdapter;
  protected static final int UPDATE_POPUWINDOW_HEIGHT_DELETE = 1000;
  protected static final int UPDATE_POPUWINDOW_HEIGHT_SHOW = 1001;
  private static final int UPDATE_POPUWINDOW_HEIGHT_DISMISS = 1002;
  @SuppressLint("HandlerLeak")
  private Handler myHandler = new Handler() {
    @Override
    public void handleMessage(android.os.Message msg) {
      switch (msg.what) {
      case UPDATE_POPUWINDOW_HEIGHT_DISMISS:
        ivShowPhoneList.setImageResource(R.drawable.ic_find_next_holo_light);
        break;
      case UPDATE_POPUWINDOW_HEIGHT_DELETE:
          int popuWidthDelete = findViewById(R.id.mLayout).getWidth()+10;
          int popuHeightDelete = ((Integer)msg.obj)<3?LayoutParams.WRAP_CONTENT:findViewById(R.id.mLayout).getHeight()*3;
          popupWindow.setWidth(popuWidthDelete);
          popupWindow.setHeight(popuHeightDelete);
          Log.e(TAG, "isShowing()=" + popupWindow.isShowing());
          if(popupWindow.isShowing()) {
            popupWindow.dismiss();
          }
          popupWindow.showAsDropDown(findViewById(R.id.mLayout), -5, -1);
        break;
      case UPDATE_POPUWINDOW_HEIGHT_SHOW:
          int popuWidthShow = findViewById(R.id.mLayout).getWidth()+10;
          int popuHeightShow = ((Integer)msg.obj)<3?LayoutParams.WRAP_CONTENT:findViewById(R.id.mLayout).getHeight()*3;
          popupWindow.setWidth(popuWidthShow);
          popupWindow.setHeight(popuHeightShow);
          Log.e(TAG, "isShowing()=" + popupWindow.isShowing());
          if(popupWindow.isShowing()) {
            popupWindow.dismiss();
            return;
          }
          ivShowPhoneList.setImageResource(R.drawable.ic_find_previous_holo_light);
          popupWindow.showAsDropDown(findViewById(R.id.mLayout), -5, -1);
          break;
      default:
        break;
      }
    };
  };
  @Override
  protected void onCreate(Bundle arg0) {
    super.onCreate(arg0);
    setContentView(R.layout.activity_test);
    context = this;
    initView();
    addlisener();
  }
  /***
   * 初始化控件
   */
  private void initView() {
    // 获取本机系统语言
    String systemlanguage = getResources().getConfiguration().locale
        .getCountry();
    etPhone = (EditText) findViewById(R.id.mobilenum);
    etPhone.setOnFocusChangeListener(this);
    etPhone.addTextChangedListener(this);
    if (systemlanguage.equals("CN")) {
      etPhone.setInputType(InputType.TYPE_CLASS_NUMBER);
    }
    etPassword = (EditText) findViewById(R.id.pwd);
    etPassword.setOnFocusChangeListener(this);
    ivShowPhoneList = (ImageView)findViewById(R.id.login_iv_show_phone_list);
    ivShowPhoneList.setOnClickListener(this);
    wrapListView = (ListView) LayoutInflater.from(context).inflate(R.layout.login_pop_view, null);
    wrapListView.setOnItemClickListener(this);
    userAdapter = new UserAdapter(this);
    userAdapter.setDeleteUser(this);
    wrapListView.setAdapter(userAdapter);
    popupWindow = new PopupWindow(wrapListView);
    popupWindow.setBackgroundDrawable(getResources().getDrawable(R.color.transparent));
    popupWindow.setFocusable(true);
    popupWindow.setOutsideTouchable(true);
    popupWindow.setOnDismissListener(this);
  }
  /***
   * 添加监听事件
   */
  private void addlisener() {
    findViewById(R.id.dologin).setOnClickListener(this);
    findViewById(R.id.forgetPassword).setOnClickListener(this);
    findViewById(R.id.registerbtn).setOnClickListener(this);
    etPhone.setOnTouchListener(this);
    etPassword.setOnTouchListener(this);
  }
  @Override
  public void onClick(View v) {
    super.onClick(v);
    switch (v.getId()) {
    //点击图片显示存储登录过的账户列表
    case R.id.login_iv_show_phone_list:
      //获取存储在本地的用户登录数据
      listUsers = LocalInfoUtil.getUser(context);
      if(listUsers != null && listUsers.size() > 0){
        userAdapter.setListUsers(listUsers);
        Message message = new Message();
        message.obj = listUsers.size();
        message.what = UPDATE_POPUWINDOW_HEIGHT_SHOW;
        myHandler.sendMessage(message);
      }
      break;
    case R.id.dologin:
      //把登录User信息进行存储
      User user = new User();
      user.setId(etPhone.getEditableText().toString());
      user.setPwd(etPassword.getEditableText().toString());
      user.setLoginStatus(1);
      user.setLoginTime(DateUtil.getCurrentNowTime());
      if(listUsers == null){
        listUsers = new ArrayList<User>();
      }
      listUsers.add(user);
      LocalInfoUtil.saveUser(context,listUsers);
      break;
    default:
      break;
    }
  }
  @Override
  public boolean onTouch(View v, MotionEvent event) {
    Drawable drawable = null;
    //判断是否是电话删除
    if(v.getId() == R.id.mobilenum){
      drawable = etPhone.getCompoundDrawables()[2];
      //判断有没有图片
      if(drawable == null)return false;
      //判断是不是按下事件
      if(event.getAction() != MotionEvent.ACTION_UP)return false;
      //进行判断在right图片点击范围
      if (event.getX() > etPhone.getWidth()- etPhone.getPaddingRight()
          - drawable.getIntrinsicWidth()){
        etPhone.setText(null);
        etPassword.setText(null);
        Log.e("LoginActivity","onTouch()进入删除电话");
      }
    }
    //判断是否是密码删除
    if(v.getId() == R.id.pwd){
      drawable = etPassword.getCompoundDrawables()[2];
      //判断有没有图片
      if(drawable == null)return false;
      //判断是不是按下事件
      if(event.getAction() != MotionEvent.ACTION_UP)return false;
      if (event.getX() > etPassword.getWidth()- etPassword.getPaddingRight()
          - drawable.getIntrinsicWidth()){
        Log.e("LoginActivity","onTouch()进入删除密码");
        etPassword.setText(null);
      }
    }
    return false;
  }
  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position,
      long id) {
    User user = (User)parent.getAdapter().getItem(position);
    etPhone.setText(user.getId());
    etPassword.setText(user.getPwd());
  }
  @Override
  public void deleteUserClick(final View v) {
    final User user = userAdapter.getItem((Integer)v.getTag());
    AlertDialog.Builder builder = new AlertDialog.Builder(context);
    builder.setTitle(getString(R.string.tips))
    .setMessage(getString(R.string.sure_clear)+"("+user.getId()+")?")
    .setNegativeButton(getString(R.string.cancle), null)
    .setPositiveButton(getString(R.string.sure), new DialogInterface.OnClickListener(){
      @Override
      public void onClick(DialogInterface dialog, int which) {
        listUsers = LocalInfoUtil.getUser(context);
        if(listUsers == null){
          return;
        }
        Log.e(TAG,""+listUsers.size());
        for (int i = 0; i < listUsers.size(); i++) {
          if(user.getId().equals(listUsers.get(i).getId())){
            listUsers.remove(i);
            String account = LocalInfoUtil.getValueFromSP(context, Constants.LOACAL_FILE_NAME,
                Constants.CUSTOME_PHONE_NUN);
            if(account != null && user.getId().equals(account)){
              Log.e(TAG,"清理内存中的对应的账户与密码");
              etPassword.setText(null);
              etPhone.setText(null);
              LocalInfoUtil.clearValuesByKey(context, Constants.LOACAL_FILE_NAME,
                  Constants.CUSTOME_PHONE_NUN);
              LocalInfoUtil.clearValuesByKey(context, Constants.LOACAL_FILE_NAME,
                  Constants.CUSTOME_PWD);
            }
            break;
          }
        }
        LocalInfoUtil.saveUser(context, listUsers);
        userAdapter.setListUsers(listUsers);
        Log.e(TAG, "listUsers.size()="+listUsers.size());
        Message message = new Message();
        message.obj = listUsers.size();
        message.what = UPDATE_POPUWINDOW_HEIGHT_DELETE;
        myHandler.sendMessage(message);
      }
    }).show();
  }
  @Override
  public void beforeTextChanged(CharSequence s, int start, int count,
      int after) {
  }
  @Override
  public void onTextChanged(CharSequence s, int start, int before, int count) {
    if(before > 0){
      Log.e(TAG, "onTextChanged before>0=true");
      etPassword.setText(null);
    }
    Log.e(TAG, "onTextChanged start=" + start + " count="+count);
    if((start + count) == 11){
      listUsers = LocalInfoUtil.getUser(context);
      if(listUsers != null){
        Log.e(TAG, "onTextChanged s=" + s);
        for(User user:listUsers){
          if(s.toString().equals(user.getId())){
            etPassword.setText(user.getPwd());
            break;
          }
          Log.e(TAG, "onTextChanged " + user.getId());
        }
      }
    }
  }
  @Override
  public void afterTextChanged(Editable s) {
  }
  @Override
  public void onFocusChange(View v, boolean hasFocus) {
    if(v.getId() == R.id.mobilenum){
      Log.e(TAG, "onFocusChange mobilenum");
      if(hasFocus){
        Log.e(TAG, "onFocusChange 图片显示");
        etPhone.setCompoundDrawablesWithIntrinsicBounds(null, null,
            getResources().getDrawable(R.drawable.login_delete_account), null);
      }else{
        Log.e(TAG, "onFocusChange 图片隐藏");
        etPhone.setCompoundDrawablesWithIntrinsicBounds(null, null,null, null);
      }
    }
    if(v.getId() == R.id.pwd){
      if(hasFocus){
        etPassword.setCompoundDrawablesWithIntrinsicBounds(null, null,
            getResources().getDrawable(R.drawable.login_delete_account), null);
      }else{
        etPassword.setCompoundDrawablesWithIntrinsicBounds(null, null,null, null);
      }
    }
  }
  @Override
  public void onDismiss() {
    myHandler.sendEmptyMessage(UPDATE_POPUWINDOW_HEIGHT_DISMISS);
  }
}

遇到的问题和解决方法：

1、当EditText有焦点时，键盘弹出，弹出框就会出现在顶部，有设置过当弹出框之前隐藏掉键盘，但不行。如下图

2、点击图片按钮popouWindow弹出，箭头是向上，再点击图片按钮，popouWindow消失，图片向下。一开始用图片按钮来控制这个效果，但是popouWindow把这个焦点失去了，所以用popouWindow的消失事件来监听

以上所述是小编给大家介绍的Android登录记住多个密码的实现方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对我们网站的支持！