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这篇文章主要讲解了Android如何实现简单用户注册,内容清晰明了,对此有兴趣的小伙伴可以学习一下,相信大家阅读完之后会有帮助。
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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!
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);
//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
<?xml version="1.0" encoding="utf-8"?>
activity_second.xml
<?xml version="1.0" encoding="utf-8"?>
MainActivity.java
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"}; ArrayAdapteradapter=new ArrayAdapter (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
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?
实现如下
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"}; // ArrayAdapteradapter=new ArrayAdapter (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:
<?xml version="1.0" encoding="utf-8"?>- 南宁
- 桂林
- 柳州
- 百色
- 河池
- 玉林
看完上述内容,是不是对Android如何实现简单用户注册有进一步的了解,如果还想学习更多内容,欢迎关注创新互联行业资讯频道。