关于android几种常见的UI综合

本文主要将android常见的几种UI集中在一起，主要是加强对常用UI的使用，以一个登录界面为例说明如下：

项目的布局文件如下：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    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:id="@+id/name"           android:layout_width="@dimen/TextViewWidth"           android:layout_height="wrap_content"           android:layout_alignParentLeft="true"           android:layout_centerVertical="true"           android:text="@string/name"           android:textSize="@dimen/FontSize" />       <EditText           android:layout_width="@dimen/EditTextWidth"          android:layout_height="wrap_content"          android:layout_toRightOf="@id/name"          android:layout_alignTop="@id/name"          android:id="@+id/nameValue"                     />   </RelativeLayout>          <RelativeLayout       android:layout_width="fill_parent"        android:layout_height="wrap_content"       >              <TextView           android:id="@+id/password"           android:layout_width="@dimen/TextViewWidth"           android:layout_height="wrap_content"           android:layout_alignParentLeft="true"           android:layout_centerVertical="true"           android:text="@string/password"           android:textSize="@dimen/FontSize" />               <EditText           android:layout_width="@dimen/EditTextWidth"          android:layout_height="wrap_content"          android:layout_toRightOf="@id/password"          android:layout_alignTop="@id/password"          android:inputType="textPassword"          android:id="@+id/passwordValue"                     />   </RelativeLayout>       <RelativeLayout       android:layout_width="fill_parent"        android:layout_height="wrap_content"       >              <TextView           android:id="@+id/age"           android:layout_width="@dimen/TextViewWidth"           android:layout_height="wrap_content"           android:layout_alignParentLeft="true"           android:layout_centerVertical="true"           android:text="@string/age"           android:textSize="@dimen/FontSize" />          <!-- 将输入框限制为整数输入 -->        <EditText           android:layout_width="@dimen/EditTextWidth"          android:layout_height="wrap_content"          android:layout_toRightOf="@id/age"          android:layout_alignTop="@id/age"          android:numeric="integer"                    android:id="@+id/ageValue"                     />   </RelativeLayout>        <RelativeLayout       android:layout_width="fill_parent"        android:layout_height="wrap_content"       >                <TextView           android:id="@+id/sex"           android:layout_width="@dimen/TextViewWidth"           android:layout_height="wrap_content"           android:layout_alignParentLeft="true"           android:layout_centerVertical="true"           android:text="@string/sex"           android:textSize="@dimen/FontSize" />       <RadioGroup            android:layout_toRightOf="@id/sex"            android:layout_height="wrap_content"           android:layout_width="wrap_content"           android:orientation="horizontal"           android:id="@+id/sexmenu"           android:checkedButton="@+id/man"           >           <RadioButton                android:text="男"               android:id="@id/man"               />           <RadioButton                android:text="女"               android:id="@+id/women"               />       </RadioGroup>         </RelativeLayout>              <RelativeLayout       android:layout_width="fill_parent"        android:layout_height="wrap_content"       >              <TextView           android:id="@+id/hobby"           android:layout_width="wrap_content"           android:layout_height="wrap_content"           android:layout_alignParentLeft="true"           android:layout_centerVertical="true"           android:text="@string/hobby"           android:textSize="@dimen/FontSize" />       <CheckBox           android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_toRightOf="@id/hobby"          android:id="@+id/pingpang"          android:text="@string/pingpang"           />       <CheckBox           android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_toRightOf="@id/pingpang"          android:id="@+id/basketball"          android:text="@string/basketball"           />       <CheckBox           android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_toRightOf="@id/hobby"          android:id="@+id/football"          android:text="@string/football"          android:layout_below="@id/pingpang"           />       <CheckBox           android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_toRightOf="@id/football"          android:id="@+id/tennis"          android:text="@string/tennis"          android:layout_alignTop="@id/football"           />    </RelativeLayout>          <RelativeLayout       android:layout_width="fill_parent"        android:layout_height="wrap_content"       >                <TextView           android:id="@+id/city"           android:layout_width="wrap_content"           android:layout_height="wrap_content"           android:layout_alignParentLeft="true"           android:layout_centerVertical="true"           android:text="@string/city"           android:textSize="@dimen/FontSize" />      <Spinner          android:layout_width="fill_parent"          android:layout_height="wrap_content"          android:id="@+id/cityitem"          android:layout_toRightOf="@id/city"/>"                   </RelativeLayout>     <RelativeLayout       android:layout_width="fill_parent"        android:layout_height="wrap_content"       >     

下面给出activity    
package com.example.userlogin;import java.util.ArrayList;import android.R.anim;import android.os.Bundle;import android.app.Activity;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.DialogInterface;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.AdapterView;import android.widget.AdapterView.OnItemSelectedListener;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 MainActivity extends Activity {private static final String[] cites={"北京","上海","武汉","南京"};    EditText nameText,passText,ageText;    Spinner spinner;    RadioGroup radioGroup;    CheckBox pingpang,basketball,tennis,football;    Button regButton;    ArrayList<CheckBox> arrayList;     private boolean flag=true;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//定义一个arrayList来存放所有的CheckBoxarrayList=new ArrayList<CheckBox>();nameText=(EditText) findViewById(R.id.nameValue);passText=(EditText) findViewById(R.id.passwordValue);ageText=(EditText) findViewById(R.id.ageValue);regButton=(Button) findViewById(R.id.login_btn);spinner=(Spinner) findViewById(R.id.cityitem);radioGroup=(RadioGroup) findViewById(R.id.sexmenu);//将basketball对象添加到arrayList中去basketball=(CheckBox) findViewById(R.id.basketball);arrayList.add(basketball);football=(CheckBox) findViewById(R.id.football);arrayList.add(football);tennis=(CheckBox) findViewById(R.id.tennis);arrayList.add(tennis);pingpang=(CheckBox) findViewById(R.id.pingpang);arrayList.add(pingpang);//创建数组型适配器ArrayAdapter<String> adapter=new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_spinner_dropdown_item,cites );adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);spinner.setAdapter(adapter);regButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {flag=addUser();if (flag) {AlertDialog.Builder dBuilder=new AlertDialog.Builder(MainActivity.this);dBuilder.setTitle("请确认信息").setMessage("您的信息如下："+"\n"+"姓名:"+nameText.getText().toString()+"\n"+"年龄："+ageText.getText().toString()+"\n"+"性别："+getSex()+"\n"+"爱好："+getHobby()+"\n"+"城市："+getCity()+"\n")    .setCancelable(false)    .setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {ProgressDialog.show(MainActivity.this, "用户信息注册中", "请等待....").setCancelable(true);}}).setNegativeButton("修改", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.cancel();//修改的时候删除对话框}}).create().show();}}});}      private String getSex(){      //获取被选中的单选框      RadioButton mRadioButton=(RadioButton) findViewById(radioGroup.getCheckedRadioButtonId());      return mRadioButton.getText().toString();//获取单选框的值      }            private String getHobby(){      String string="";      for (CheckBox cb:arrayList) {if (cb.isChecked()) {string+=cb.getText().toString();string+=",";}}      if (string!="") {string=string.substring(0, string.length()-1);}else {string="您没有选择爱好！";}return string;      } private String getCity() {return cites[spinner.getSelectedItemPosition()];//获取当前选择的下拉列表的值}/** * 拼写检测，检测输入内容是否符合要求 * */ public boolean addUser(){ if (nameText.getText().toString().length()==0) {nameText.setError("用户名不能为空");return false;} if (passText.getText().toString().length()==0) {nameText.setError("密码不能为空");return false;} if (ageText.getText().toString().length()==0) {nameText.setError("年龄不能为空");return false;} return true; }}

       <Button           android:id="@+id/login_btn"           android:layout_width="wrap_content"           android:layout_height="wrap_content"           android:layout_alignParentLeft="true"           android:layout_centerVertical="true"           android:text="@string/login_btn"           android:textSize="@dimen/FontSize" />                         </RelativeLayout></LinearLayout>