利用Android常用UI控件完成简单地注册功能

来源：互联网发布：client是什么软件编辑：程序博客网时间：2024/05/17 22:56

最近在学习Android，刚刚看到UI控件这里，自己写了个小例子和初学者分享一下。

实现的是一个注册页面，需要填写用户名（EditText），密码（EditText），年龄（EditText），性别（RadioButton），爱好（CheckBox），城市（Spinner）。其中用户名，密码，年龄不能为空，需要有验证；点击注册按钮后弹出一个确认窗口（AlertDialog），窗口中显示确认的信息（也就是刚才填写的信息），并且有确认和取消键；点击确认信息4秒后可以完成注册，过程和结果都要有提示。

具体效果如下所示：

具体代码实现如下：

regist.xml

<?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:orientation="vertical" >        <RelativeLayout         android:layout_width="match_parent"    android:layout_height="wrap_content">        <TextView             android:id="@+id/name"            android:layout_width="@dimen/textView"    android:layout_height="wrap_content"    android:text="@string/name"/>        <EditText             android:id="@+id/nameValue"            android:inputType="text"            android:layout_toRightOf="@id/name"            android:layout_toEndOf="@id/name"            android:layout_width="@dimen/editText"    android:layout_height="wrap_content"/>    </RelativeLayout>         <RelativeLayout         android:layout_width="match_parent"    android:layout_height="wrap_content">        <TextView             android:id="@+id/password"            android:layout_width="@dimen/textView"    android:layout_height="wrap_content"    android:text="@string/password"/>        <EditText             android:id="@+id/passwordValue"            android:inputType="textPassword"            android:layout_toRightOf="@id/password"            android:layout_toEndOf="@id/password"            android:layout_width="@dimen/editText"    android:layout_height="wrap_content"/>    </RelativeLayout>    <RelativeLayout         android:layout_width="match_parent"    android:layout_height="wrap_content">        <TextView             android:id="@+id/age"            android:layout_width="@dimen/textView"    android:layout_height="wrap_content"    android:text="@string/age"/>        <EditText             android:id="@+id/ageValue"            android:inputType="number"            android:layout_toRightOf="@id/age"            android:layout_toEndOf="@id/age"            android:layout_width="@dimen/editText"    android:layout_height="wrap_content"/>    </RelativeLayout>    <RelativeLayout     android:layout_width="match_parent"    android:layout_height="wrap_content">    <TextView             android:id="@+id/sex"            android:layout_width="@dimen/textView"    android:layout_height="wrap_content"    android:text="@string/sex"/>    <RadioGroup         android:id="@+id/sexMenu"            android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_toRightOf="@id/sex"    android:layout_toEndOf="@id/sex"    android:checkedButton="@+id/man"    android:orientation="horizontal">        <RadioButton             android:id="@id/man"            android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="@string/man"/>        <RadioButton             android:id="@+id/woman"            android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="@string/woman"/>            </RadioGroup></RelativeLayout><RelativeLayout     android:layout_width="match_parent"    android:layout_height="wrap_content">    <TextView             android:id="@+id/favorite"            android:layout_width="@dimen/textView"    android:layout_height="wrap_content"    android:text="@string/favorite"/>    <CheckBox         android:id="@+id/pingpang"        android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_toRightOf="@id/favorite"    android:layout_toEndOf="@id/favorite"    android:text="@string/pingpang"/>    <CheckBox         android:id="@+id/football"        android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_toRightOf="@id/pingpang"    android:layout_toEndOf="@id/pingpang"    android:text="@string/football"/>    <CheckBox         android:id="@+id/badminton"        android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_toRightOf="@id/favorite"    android:layout_toEndOf="@id/favorite"    android:layout_below="@id/football"    android:text="@string/badminton"/>    <CheckBox         android:id="@+id/basketball"        android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_toRightOf="@id/badminton"    android:layout_toEndOf="@id/badminton"    android:layout_below="@id/football"    android:text="@string/basketball"/></RelativeLayout><RelativeLayout     android:layout_width="match_parent"    android:layout_height="wrap_content">    <TextView             android:id="@+id/city"            android:layout_width="@dimen/textView"    android:layout_height="wrap_content"    android:text="@string/city"/>    <Spinner         android:id="@+id/cityValue"        android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_toRightOf="@id/city"    android:layout_toEndOf="@id/city"/></RelativeLayout><Button     android:id="@+id/regist"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="@string/regist"/></LinearLayout>

strings.xml

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="app_name">猴赛累</string>    <string name="hello_world">Hello world!</string>    <string name="action_settings">Settings</string>    <string name="name">用户名：</string>    <string name="password">密码：</string>    <string name="age">年龄：</string>    <string name="sex">性别：</string>    <string name="favorite">爱好：</string>    <string name="city">城市：</string>    <string name="regist">注册</string>    <string name="man">男</string>    <string name="woman">女</string>    <string name="pingpang">乒乓球</string>    <string name="football">足球</string>    <string name="badminton">羽毛球</string>    <string name="basketball">篮球</string></resources>

dimens.xml

<resources>    <!-- Default screen margins, per the Android Design guidelines. -->    <dimen name="activity_horizontal_margin">16dp</dimen>    <dimen name="activity_vertical_margin">16dp</dimen>    <dimen name="textView">70dp</dimen>    <dimen name="editText">200dp</dimen></resources>

MainActivity.java

package com.example.housailei;import java.util.ArrayList;import java.util.List;import android.annotation.SuppressLint;import android.app.Activity;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.DialogInterface;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;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;import android.widget.Toast;public class MainActivity extends Activity {private boolean flag=true;private static final String[] citis={"济南","北京","上海","成都","广州","天津","杭州","深圳"};private EditText name,password,age;private RadioGroup sex;private List<CheckBox> favorites;private CheckBox pingpang,football,badminton,basketball;private Spinner city;private Button regist;private ProgressDialog progressDialog; @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.regist);favorites=new ArrayList<CheckBox>();name=(EditText) findViewById(R.id.nameValue);password=(EditText) findViewById(R.id.passwordValue);age=(EditText) findViewById(R.id.ageValue);sex=(RadioGroup) findViewById(R.id.sexMenu);pingpang=(CheckBox) findViewById(R.id.pingpang);football=(CheckBox) findViewById(R.id.football);badminton=(CheckBox) findViewById(R.id.badminton);basketball=(CheckBox) findViewById(R.id.basketball);city=(Spinner) findViewById(R.id.cityValue);regist=(Button) findViewById(R.id.regist);favorites.add(pingpang);favorites.add(football);favorites.add(badminton);favorites.add(basketball);//创建数组型适配器ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,citis);adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);city.setAdapter(adapter);//为注册按钮设置点击监听regist.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v){flag=checkUser();if(flag){//创建AlertDialog对话框显示要确认的注册信息new AlertDialog.Builder(MainActivity.this).setTitle("请确认注册信息：").setMessage("用户名："+name.getText().toString()+"\n"+"密码:"+password.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){progressDialog=ProgressDialog.show(MainActivity.this, "用户信息注册中", "请等待...", true, false);//创建一个新线程new Thread(){                        @Override                      public void run() {                          //需要花时间计算的方法                          Calculation.calculate(4);                                                    //向handler发消息                          handler.sendEmptyMessage(0);                      }}.start();}}).setNegativeButton("取消",new DialogInterface.OnClickListener(){public void onClick(DialogInterface dialog,int id){dialog.cancel();}}).show();}}});}private Handler handler = new Handler(){            @SuppressLint("HandlerLeak")@Override          public void handleMessage(Message msg) {                           //关闭ProgressDialog              progressDialog.dismiss();            //利用Toast提示注册成功            Toast.makeText(MainActivity.this, "注册成功！", Toast.LENGTH_SHORT).show();             }};          //获取城市信息protected String getCity() {return citis[city.getSelectedItemPosition()];}//获取爱好信息protected String getFavorite() {String favorite="";for(CheckBox cb:favorites){if(cb.isChecked()){favorite+=cb.getText().toString();favorite+=",";}}if(favorite!=""){favorite.subSequence(0, favorite.length()-1);}else{//如果没有勾选爱好，则返回该提示。favorite="您未选择爱好！";}return favorite;}//获取性别信息protected String getSex() {RadioButton sexChecked=(RadioButton) findViewById(sex.getCheckedRadioButtonId());return sexChecked.getText().toString();}//检验用户名，密码，年龄是否为空，如果有空的则提示不能为空，并返回falseprotected boolean checkUser() {if(name.getText().toString().length()==0){name.setError("用户名不能为空！");return false;}if(password.getText().toString().length()==0){password.setError("密码不能为空！");return false;}if(age.getText().toString().length()==0){age.setError("年龄不能为空！");return false;}return true;}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);}}

Calculation.java

package com.example.housailei;public class Calculation {public static void calculate(int sleepSeconds){          try {              Thread.sleep(sleepSeconds * 1000);          } catch (Exception e) {              // TODO: handle exception          }      }  }

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