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Android登录记住多个密码的实现方法

时间：2020-12-28 11:11:54|栏目：Android代码|点击： 次

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

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