[转]Android的userlogin登录

本文转自：http://hteqc6o.blog.sohu.com/199334086.html

  用户注册

1.首先，先画你想要编译出的界面

根据草图，仅仅使用linearLayout的布局是不够的，还需要与RelativeLayout嵌套使用

编写String.Xml

<?xml version="1.0" encoding="utf-8"?>

<resources>

 

    <string name="hello">Hello World, UserLoginActivity!</string>

    <string name="app_name">用户注册界面</string>

    <string name="nameString">用户名</string>

    <string name="ageString">年龄</string>

    <string name="registerButtonText">注册</string>

    <string name="sexString">性别</string>

  <string name="favoriteString">喜好</string>

  <string name="cityString">城市</string>

  <string name="passString">密码</string>

  <string name="pingpang">兵乓球</string>

  <string name="basketball">篮球</string>

  <string name="football">足球</string>

  <string name="tennis">网球</string>

</resources>

 

 

编写parameters.xml:

这是存放属性信息，如字体、TextView和EditText的宽度。

<?xml version="1.0" encoding="utf-8"?>

<resources>

    <dimen name="fontSize">22px</dimen>

    <dimen name="TextViewWidth">90px</dimen>

    <dimen name="EditTextWidth">160px</dimen>

</resources>

 

再编写main.xml

 

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

<RelativeLayout

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    >

    <TextView

        android:layout_width="@dimen/TextViewWidth"

        android:layout_height="wrap_content"

        android:text="@string/nameString"

        android:textSize="@dimen/fontSize"

        android:id="@+id/name"/>

    <EditText

        android:layout_width="@dimen/EditTextWidth"

        android:layout_height="wrap_content"

        android:layout_toRightOf="@string/nameString"

        android:layout_alignTop="@id/name"

        android:id="@+id/nameValue"/>/

   

</RelativeLayout>

<RelativeLayout

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    >

    <TextView

        android:layout_width="@dimen/EditTextWidth"

        android:layout_height="wrap_content"

        android:text="@string/passString"

        android:textSize="@dimen/fontSize"

        android:id="@+id/pass"/>

    <EditText

        android:password="true"

        android:layout_width="@dimen/EditTextWidth"

        android:layout_height="wrap_content"

        android:layout_toRightOf="@id/pass"

        android:layout_alignTop="@id/pass"

        android:id="@+id/passValue"

        />

    </RelativeLayout>

    <RelativeLayout

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        >

        <TextView android:layout_width="@dimen/TextViewWidth"

            android:layout_height="wrap_content"

            android:text="@string/ageString"

            android:textSize="@dimen/fontSize"

            android:id="@+id/age"

            />

           

    <EditText

     

        android:layout_width="@dimen/EditTextWidth"

        android:layout_height="wrap_content"

        android:layout_toRightOf="@id/age"

        android:layout_alignTop="@id/age"

        android:id="@+id/ageValue"

        />

       

    </RelativeLayout>

    <RelativeLayout

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        >

        <TextView android:layout_width="@dimen/TextViewWidth"

            android:layout_height="wrap_content"

            android:text="@string/sexString"

            android:textSize="@dimen/fontSize"

            android:id="@+id/sex"

            />

           

    <RadioGroup

      

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_toRightOf="@id/sex"

        android:checkedButton="@+id/radioMan"

        android:orientation="horizontal"

        android:id="@+id/sexMenu">

      <RadioButton android:text="男" android:id="@id/radioMan"/>

      <RadioButton android:text="女" android:id="@+id/radioWomen"/>

      </RadioGroup>

      </RelativeLayout>

        <RelativeLayout

          android:layout_width="fill_parent"

          android:layout_height="wrap_content"

          >

          <TextView

              android:layout_width="@dimen/TextViewWidth"

              android:layout_height="wrap_content"

              android:text="@string/favoriteString"

              android:textSize="@dimen/fontSize"

              android:id="@+id/favorite"/>

          <CheckBox

              android:layout_width="wrap_content"

              android:layout_height="wrap_content"

              android:layout_toRightOf="@id/favorite"

              android:text="@string/pingpang"

              android:id="@+id/checkboxpingpang"

             />

          <CheckBox

              android:layout_width="wrap_content"

              android:layout_height="wrap_content"

              android:layout_toRightOf="@id/checkboxpingpang"

              android:text="@string/football"

              android:id="@+id/checkboxfootball"/>

             

          <CheckBox

              android:layout_width="wrap_content"

              android:layout_height="wrap_content"

              android:layout_toRightOf="@id/favorite"

              android:layout_below="@id/checkboxfootball"

              android:text="@string/basketball"

              android:id="@+id/checkboxbasketball"/>

             

          <CheckBox

              android:layout_width="wrap_content"

              android:layout_height="wrap_content"

              android:layout_toRightOf="@id/checkboxbasketball"

              android:layout_alignTop="@id/checkboxbasketball"

             

              android:text="@string/tennis"

              android:id="@+id/checkboxtennis"/>

      </RelativeLayout>

      <RelativeLayout

          android:layout_width="fill_parent"

          android:layout_height="wrap_content"

          >

          <TextView

              android:layout_width="@dimen/TextViewWidth"

              android:layout_height="wrap_content"

              android:text="@string/cityString"

              android:textSize="@dimen/fontSize"

              android:id="@+id/city"/>

          <Spinner

              android:layout_width="fill_parent"

              android:layout_height="wrap_content"

              android:layout_toRightOf="@id/city"

              android:id="@+id/cityItems">

     

         </Spinner>

      </RelativeLayout>

          <Button

              android:layout_width="wrap_content"

              android:layout_height="wrap_content"

              android:text="@string/registerButtonText"

              android:id="@+id/regidterButton"/>

     

       

  

 

</LinearLayout>

·参数设置：

<dimen name=”fontSize”>22px</dimen>

存放px(pixels),in(inches),mm(millmeters),pt(points at 72 DPI)类型的数据

·应用：

      Android:textSize=”@dimen/fontSize”

·布局的特别属性

      在这里我们需要用到Relativelayout 的个别属性，例如：

      Android:layout_toRightOf=”@id/age”

           这是与控件age向右对齐

·输入框的输入限制

      Android：numeric=”integer

 

 

编写java代码：

” package com.sharpandroid.UserLogin;

 

import java.util.ArrayList;

 

import java.util.List;

 

 

import android.app.Activity;

import android.app.AlertDialog;

import android.app.ProgressDialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.EditText;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.Spinner;

 

public class LoginActivity extends Activity {

  

  private static final String[] cities = {"北京","上海","石家庄","保定","米兰","慕尼黑","巴黎"};

  private EditText name,age,pass;

  private Button regButton;

  private RadioGroup sexRadioGroup;

  private CheckBox basketball,football,pingpang,tennis;

  private Spinner cityItems;

  private boolean flag = true;

  private List<CheckBox> favorities;

    public void onCreate(Bundle savedInstanceState) {

   

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        //定义一个ArrayList，用来存放所有的checkBox

        favorities = new ArrayList<CheckBox>();

        //得到相应的对对象

        name = (EditText) findViewById(R.id.nameValue);

        age = (EditText) findViewById(R.id.ageValue);

        pass = (EditText) findViewById(R.id.passValue);

        regButton = (Button) findViewById(R.id.regidterButton);

        cityItems = (Spinner) findViewById(R.id.cityItems);

        sexRadioGroup = (RadioGroup) findViewById(R.id.sexMenu);

       

        basketball = (CheckBox) findViewById(R.id.checkboxbasketball);

        //将basketball对象添加到favorities中

        favorities.add(basketball);

        football = (CheckBox) findViewById(R.id.checkboxfootball);

        favorities.add(football);

        pingpang = (CheckBox) findViewById(R.id.checkboxpingpang);

        favorities.add(pingpang);

        tennis = (CheckBox) findViewById(R.id.checkboxtennis);

        favorities.add(tennis);

        //创建一个数组型适配器，并将cities中的数据

        ArrayAdapter<String>adpter = new ArrayAdapter<String>(

        LoginActivity.this,android.R.layout.simple_spinner_item,cities);

        adpter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

        cityItems.setAdapter(adpter);

        //为regButton注册一个事件监听器

        regButton.setOnClickListener(new View.OnClickListener() {

       //当按钮被点击的时候调用

       

       @Override

       public void onClick(View v) {

       flag = addUser();

       if(flag)

         //创建Alertdialog对话框的显示登录信息。

         new

         AlertDialog.Builder(LoginActivity.this).setTitle("请确认信息")

         .setMessage("您的信息如下："+"\n" + "姓名："

         +name.getText().toString()+"/n"+" 年龄："

         +age.getText().toString()+"/n"+"性别："

         +getSex()+"\n"+"爱好："+getFavorite()

         +"\n"+"城市："+getCity()+"\n")

         .setCancelable(false).setPositiveButton("确定",

         new DialogInterface.OnClickListener() {

           

            public void onClick(

                DialogInterface dialog, int id) {

              // TODO Auto-generated method stub

              ProgressDialog.show(

              LoginActivity.this,"用户信息注册中","请等待……")

              .setCancelable(true);

             

            }

         }).setNegativeButton("修改",

              new DialogInterface.OnClickListener() {

        

                public void onClick(

                     DialogInterface dialog, int id) {

                   dialog.cancel();//删除对话框

                  

                }

              }).show();

       }

           

        

      

     });

    }

    //获取Spinner中的值

    private String getCity(){

    return cities[cityItems.getSelectedItemPosition()];

   

    }

    //获取checkBox中的值

    private String getFavorite(){

    String favString = "";

    for(CheckBox cd : favorities){

        if (cd.isChecked()){

          favString +=cd.getText().toString();

          favString +=",";

           

        }

    }

    if(favString != ""){

favString = favString.substring(0,favString.length() -1);

       

    }else{

        favString="您还没有选择！";

       

    }return favString;

    }

    private String getSex(){

    RadioButton mRadio = (RadioButton)findViewById

          (sexRadioGroup.getCheckedRadioButtonId());

    return mRadio.getText().toString();

    }

    public boolean addUser(){

    if(name.getText().toString().length()==0){

        name.setError("用户名不嫩为空");

        return false;

    }

    if (age.getText().toString().length()==0){

        age.setError("年龄不能为空");

        return false;

    }

    if(pass.getText().toString().length()==0){

        pass.setError("密码不能为空");

        return false;

    }

    return true;

    }

}

当你没有输入用户名就点击注册会出现提示：如下：

点击注册会出现：