本文实例为大家分享了Android实现简单用户注册的具体代码,供大家参考,具体内容如下
目标: 设计一个用户注册案例。在主界面中对输入的手机号、密码、性别、爱好和城市后,可以在界面二中进行显示。
提示:
1、页面布局的元素用到TextView、EditText、Button、RadioButton、CheckBox、Spinner;
2、通过intent实现主界面跳转到界面二
3、涉及传递多个的数据时,使用Bundle对象作为容器,通过调用Bundle的putString先将数据存储到Bundle中,然后调用Intent的putExtras()方法将Bundle存入Intent中,然后获得Intent后, 调用getExtras()获得Bundle容器,然后调用其getString获取对应的数据!
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Bundle bundle= new Bundle(); bundle.putString( "phone" ,phone_str); bundle.putString( "paswd" ,paswd_str); bundle.putString( "sex" ,sex_str); bundle.putString( "hobby" ,hobby_str); bundle.putString( "city" ,city_str); //为意图追加额外的数据,意图原来已经具有的数据不会丢失,但key同名的数据会被替换 intent.putExtras(bundle); |
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//取得启动该Activity的Intent对象 Intent intent= this .getIntent(); Bundle bundle=intent.getExtras(); /*取出Intent中附加的数据*/ String phone=bundle.getString( "phone" ); String paswd=bundle.getString( "paswd" ); String sex=bundle.getString( "sex" ); String hobby=bundle.getString( "hobby" ); String city=bundle.getString( "city" ); |
界面显示如下:
实现如下:
activity_main.xml
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<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" xmlns:tools = "http://schemas.android.com/tools" android:orientation = "vertical" android:layout_width = "match_parent" android:layout_height = "match_parent" android:background = "@drawable/img03" tools:context = "com.example.jinjin.applicationtest4.MainActivity" > <!--手机号--> < LinearLayout android:layout_width = "368dp" android:layout_height = "wrap_content" tools:layout_editor_absoluteY = "0dp" android:orientation = "horizontal" tools:layout_editor_absoluteX = "8dp" > < TextView android:layout_width = "wrap_content" android:layout_height = "40dp" android:textSize = "18sp" android:textColor = "@android:color/background_dark" android:text = "手机号:" /> < EditText android:id = "@+id/phone" android:layout_width = "match_parent" android:layout_height = "50dp" android:inputType = "phone" android:hint = "请输入手机号" /> </ LinearLayout > <!--密码--> < LinearLayout android:layout_width = "368dp" android:layout_height = "wrap_content" android:orientation = "horizontal" > < TextView android:layout_width = "wrap_content" android:layout_height = "40dp" android:textSize = "18sp" android:textColor = "@android:color/background_dark" android:text = "密 码:" /> < EditText android:id = "@+id/paswd" android:layout_width = "match_parent" android:layout_height = "50dp" android:inputType = "numberPassword" android:hint = "请输入密码" /> </ LinearLayout > <!--性别选择--> < RadioGroup android:id = "@+id/sex" android:layout_width = "match_parent" android:layout_height = "40dp" android:orientation = "horizontal" > < RadioButton android:id = "@+id/nan" android:layout_width = "50dp" android:layout_height = "wrap_content" android:checked = "true" android:text = "男" /> < RadioButton android:id = "@+id/nv" android:layout_width = "50dp" android:layout_height = "wrap_content" android:text = "女" /> </ RadioGroup > < LinearLayout android:layout_width = "match_parent" android:layout_height = "wrap_content" android:orientation = "horizontal" > < CheckBox android:id = "@+id/read_book" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "读书" /> < CheckBox android:id = "@+id/play_ball" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "打球" /> < CheckBox android:id = "@+id/music" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "听音乐" /> </ LinearLayout > < Spinner android:id = "@+id/spinner" android:layout_width = "match_parent" android:layout_height = "wrap_content" /> < Button android:id = "@+id/register" android:layout_width = "fill_parent" android:background = "#3F51B5" android:textColor = "#FFFFFF" android:textSize = "18sp" android:text = "注 册" android:layout_height = "40dp" /> </ LinearLayout > |
activity_second.xml
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<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:orientation = "vertical" android:layout_width = "match_parent" android:background = "@drawable/img03" android:layout_height = "match_parent" > < TextView android:id = "@+id/show_content" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_weight = "1" android:textSize = "17sp" android:layout_marginLeft = "50dp" android:textColor = "@android:color/black" android:text = "TextView" /> </ LinearLayout > |
MainActivity.java
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package com.example.jinjin.applicationtest4; import android.content.Intent; import android.os.Bundle; import android.support.annotation.IdRes; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.AdapterView; 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 AppCompatActivity implements View.OnClickListener,RadioGroup.OnCheckedChangeListener{ //定义字符串用来保存各个信息 private String phone_str= "" ; private String paswd_str= "" ; private String sex_str= "男" ; private String hobby_str= "1" ; private String city_str= "" ; //组件定义 EditText phone_edit,paswd_edit; RadioGroup sex_group; RadioButton nan_but,nv_but; CheckBox play,read,music; Button register; Spinner spinner; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_main); //初始化组件 phone_edit = (EditText) findViewById(R.id.phone); paswd_edit=(EditText)findViewById(R.id.paswd); sex_group=(RadioGroup)findViewById(R.id.sex); //添加监听事件 nan_but=(RadioButton)findViewById(R.id.nan); sex_group.setOnCheckedChangeListener( this ); read=(CheckBox)findViewById(R.id.read_book); play=(CheckBox)findViewById(R.id.play_ball); music=(CheckBox)findViewById(R.id.music); register=(Button)findViewById(R.id.register); //添加监听事件 register.setOnClickListener( this ); spinner=(Spinner)findViewById(R.id.spinner); // 创建ArrayAdapter对象 final String[] city= new String[]{ "南宁" , "桂林" , "百色" , "柳州" , "玉林" , "河池" }; ArrayAdapter<String> adapter= new ArrayAdapter<String>( this ,android.R.layout.simple_list_item_1,city); spinner.setAdapter(adapter); //城市下拉单列表添加监听事件 spinner.setOnItemSelectedListener( new Spinner.OnItemSelectedListener(){ @Override public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { city_str=city[i]; } @Override public void onNothingSelected(AdapterView<?> adapterView) { //未选中状态 } }); } @Override public void onClick(View view) { switch (view.getId()){ case R.id.register: //获取手机号和密码 phone_str=phone_edit.getText().toString(); paswd_str=paswd_edit.getText().toString(); //获取兴趣爱好即复选框的值 hobby_str= "" ; //清除上一次已经选中的选项 if (read.isChecked()){ hobby_str+=read.getText().toString(); } if (play.isChecked()){ hobby_str+=play.getText().toString(); } if (music.isChecked()){ hobby_str+=music.getText().toString(); } Intent intent= new Intent( this ,SecondActivity. class ); Bundle bundle= new Bundle(); bundle.putString( "phone" ,phone_str); bundle.putString( "paswd" ,paswd_str); bundle.putString( "sex" ,sex_str); bundle.putString( "hobby" ,hobby_str); bundle.putString( "city" ,city_str); intent.putExtras(bundle); startActivity(intent); break ; } } @Override public void onCheckedChanged(RadioGroup radioGroup, @IdRes int i) { //根据用户选择来改变sex_str的值 sex_str=i==R.id.nan? "男性" : "女性" ; } } |
SecondActivity.java
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package com.example.jinjin.applicationtest4; import android.content.Intent; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v7.app.AppCompatActivity; import android.widget.TextView; /** * Created by jinjin on 2020/5/23. */ public class SecondActivity extends AppCompatActivity { @Override protected void onCreate( @Nullable Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_second); Intent intent= this .getIntent(); Bundle bundle=intent.getExtras(); String phone=bundle.getString( "phone" ); String paswd=bundle.getString( "paswd" ); String sex=bundle.getString( "sex" ); String hobby=bundle.getString( "hobby" ); String city=bundle.getString( "city" ); TextView show_text=(TextView)findViewById(R.id.show_content); show_text.setText( "手机号为:" +phone+ "\n" + "密码为:" +paswd+ "\n" + "性别是:" +sex+ "\n" + "爱好是:" +hobby+ "\n" + "城市是:" +city); } } |
巩固监听事件:如果要对register和spinne的监听事件改造方法,如何重新实现监听?
- register可使用内部类,并重写onClick()方法 。
- spinner可使用实现接口的监听事件。
实现如下
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package com.example.jinjin.applicationtest4; import android.content.Intent; import android.os.Bundle; import android.support.annotation.IdRes; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.AdapterView; 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 AppCompatActivity implements RadioGroup.OnCheckedChangeListener,AdapterView.OnItemSelectedListener{ //定义字符串用来保存各个信息 private String phone_str = "" ; private String paswd_str = "" ; private String sex_str = "男" ; private String hobby_str = "1" ; private String city_str = "" ; //组件定义 EditText phone_edit, paswd_edit; RadioGroup sex_group; RadioButton nan_but, nv_but; CheckBox play, read, music; Button register; Spinner spinner; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_main); //初始化组件 phone_edit = (EditText) findViewById(R.id.phone); paswd_edit = (EditText) findViewById(R.id.paswd); sex_group = (RadioGroup) findViewById(R.id.sex); //添加监听事件 nan_but = (RadioButton) findViewById(R.id.nan); sex_group.setOnCheckedChangeListener( this ); read = (CheckBox) findViewById(R.id.read_book); play = (CheckBox) findViewById(R.id.play_ball); music = (CheckBox) findViewById(R.id.music); register = (Button) findViewById(R.id.register); //添加监听事件 // register.setOnClickListener(this); spinner = (Spinner) findViewById(R.id.spinner); //直接new一个内部类对象作为参数 register.setOnClickListener( new mclick()); // final String[] city=new String[]{"南宁","桂林","百色","柳州","玉林","河池"}; // ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,city); // spinner.setAdapter(adapter); // //城市下拉单列表添加监听事件 // spinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener(){ // @Override // public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { // city_str=city[i]; // } // @Override // public void onNothingSelected(AdapterView<?> adapterView) { // } // }); //Spinner加载监听事件 spinner.setOnItemSelectedListener( this ); } @Override public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { city_str=MainActivity. this .getResources().getStringArray(R.array.city)[i]; } @Override public void onNothingSelected(AdapterView<?> adapterView) { } //定义一个内部类,实现View.OnClickListener接口,并重写onClick()方法 class mclick implements View.OnClickListener { @Override public void onClick(View view) { switch (view.getId()) { case R.id.register: //获取手机号和密码 phone_str = phone_edit.getText().toString(); paswd_str = paswd_edit.getText().toString(); //获取兴趣爱好即复选框的值 hobby_str = "" ; //清除上一次已经选中的选项 if (read.isChecked()) { hobby_str += read.getText().toString(); } if (play.isChecked()) { hobby_str += play.getText().toString(); } if (music.isChecked()) { hobby_str += music.getText().toString(); } Intent intent = new Intent(MainActivity. this , SecondActivity. class ); Bundle bundle = new Bundle(); bundle.putString( "phone" , phone_str); bundle.putString( "paswd" , paswd_str); bundle.putString( "sex" , sex_str); bundle.putString( "hobby" , hobby_str); bundle.putString( "city" , city_str); intent.putExtras(bundle); startActivity(intent); break ; } } } @Override public void onCheckedChanged(RadioGroup radioGroup, @IdRes int i) { //根据用户选择来改变sex_str的值 sex_str = i == R.id.nan ? "男性" : "女性" ; } } |
在res/values下编写一个:array.xml文件,内容如下:
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<? xml version = "1.0" encoding = "utf-8" ?> < resources > < string-array name = "city" > < item >南宁</ item > < item >桂林</ item > < item >柳州</ item > < item >百色</ item > < item >河池</ item > < item >玉林</ item > </ string-array > </ resources > |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/qq_45566079/article/details/106317703