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這篇文章主要講解了Android如何實現簡單用戶注冊,內容清晰明了,對此有興趣的小伙伴可以學習一下,相信大家閱讀完之后會有幫助。
目標: 設計一個用戶注冊案例。在主界面中對輸入的手機號、密碼、性別、愛好和城市后,可以在界面二中進行顯示。
提示:
1、頁面布局的元素用到TextView、EditText、Button、RadioButton、CheckBox、Spinner;
2、通過intent實現主界面跳轉到界面二
3、涉及傳遞多個的數據時,使用Bundle對象作為容器,通過調用Bundle的putString先將數據存儲到Bundle中,然后調用Intent的putExtras()方法將Bundle存入Intent中,然后獲得Intent后, 調用getExtras()獲得Bundle容器,然后調用其getString獲取對應的數據!
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); //為意圖追加額外的數據,意圖原來已經具有的數據不會丟失,但key同名的數據會被替換 intent.putExtras(bundle);
//取得啟動該Activity的Intent對象 Intent intent=this.getIntent(); Bundle bundle=intent.getExtras(); /*取出Intent中附加的數據*/ 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");
界面顯示如下:
實現如下:
activity_main.xml
<?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"> <!--手機號--> <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="手機號:"/> <EditText android:id="@+id/phone" android:layout_width="match_parent" android:layout_height="50dp" android:inputType="phone" android:hint="請輸入手機號"/> </LinearLayout> <!--密碼--> <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 碼:"/> <EditText android:id="@+id/paswd" android:layout_width="match_parent" android:layout_height="50dp" android:inputType="numberPassword" android:hint="請輸入密碼"/> </LinearLayout> <!--性別選擇--> <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="讀書" /> <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="聽音樂" /> </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 冊" android:layout_height="40dp" /> </LinearLayout>
activity_second.xml
<?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
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{ //定義字符串用來保存各個信息 private String phone_str=""; private String paswd_str=""; private String sex_str="男"; private String hobby_str="1"; private String city_str=""; //組件定義 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); //初始化組件 phone_edit = (EditText) findViewById(R.id.phone); paswd_edit=(EditText)findViewById(R.id.paswd); sex_group=(RadioGroup)findViewById(R.id.sex); //添加監聽事件 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); //添加監聽事件 register.setOnClickListener(this); spinner=(Spinner)findViewById(R.id.spinner); // 創建ArrayAdapter對象 final String[] city=new String[]{"南寧","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); //城市下拉單列表添加監聽事件 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) { //未選中狀態 } }); } @Override public void onClick(View view) { switch (view.getId()){ case R.id.register: //獲取手機號和密碼 phone_str=phone_edit.getText().toString(); paswd_str=paswd_edit.getText().toString(); //獲取興趣愛好即復選框的值 hobby_str="";//清除上一次已經選中的選項 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) { //根據用戶選擇來改變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("手機號為:"+phone+"\n"+"密碼為:"+paswd+"\n"+"性別是:"+sex+"\n"+"愛好是:"+hobby+"\n"+"城市是:"+city); } }
鞏固監聽事件:如果要對register和spinne的監聽事件改造方法,如何重新實現監聽?
實現如下
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{ //定義字符串用來保存各個信息 private String phone_str = ""; private String paswd_str = ""; private String sex_str = "男"; private String hobby_str = "1"; private String city_str = ""; //組件定義 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); //初始化組件 phone_edit = (EditText) findViewById(R.id.phone); paswd_edit = (EditText) findViewById(R.id.paswd); sex_group = (RadioGroup) findViewById(R.id.sex); //添加監聽事件 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); //添加監聽事件 // register.setOnClickListener(this); spinner = (Spinner) findViewById(R.id.spinner); //直接new一個內部類對象作為參數 register.setOnClickListener(new mclick()); // final String[] city=new String[]{"南寧","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); // //城市下拉單列表添加監聽事件 // 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加載監聽事件 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) { } //定義一個內部類,實現View.OnClickListener接口,并重寫onClick()方法 class mclick implements View.OnClickListener { @Override public void onClick(View view) { switch (view.getId()) { case R.id.register: //獲取手機號和密碼 phone_str = phone_edit.getText().toString(); paswd_str = paswd_edit.getText().toString(); //獲取興趣愛好即復選框的值 hobby_str = "";//清除上一次已經選中的選項 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) { //根據用戶選擇來改變sex_str的值 sex_str = i == R.id.nan ? "男性" : "女性"; } }
在res/values下編寫一個:array.xml文件,內容如下:
<?xml version="1.0" encoding="utf-8"?> <resources> <string-array name="city"> <item>南寧</item> <item>桂林</item> <item>柳州</item> <item>百色</item> <item>河池</item> <item>玉林</item> </string-array> </resources>
看完上述內容,是不是對Android如何實現簡單用戶注冊有進一步的了解,如果還想學習更多內容,歡迎關注億速云行業資訊頻道。
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