안드로이드 - 다중 페이지 개발

1. 리스트 파일 소개
1.1 응용 프로그램에 여러 개의 시작 입구를 설정하려면 다음과 같이 설정해야 한다.

 
    
     <activity android:name=".Main2Activity"> 
     <intent-filter> 
     <action android:name="android.intent.action.MAIN" /> 
     <category android:name="android.intent.category.LAUNCHER" /> 
     intent-filter> 
     activity>

1.2 application节点下的icon和label可以和activity节点下不一样如果activity自己配置了icon和label属性使用自己的.

2.意图

1.显示意图:通过设置具体的包名类名开启页面

2.隐式意图:通过设置一组动作或者数据开启页面

3.思考什么时候用显示什么时候用隐式:开系统应用的页面用隐式自己应用页面用显示

3.人品计算器

功能:计算人品

代码实现过程:

1.实现UI

2.mainActivity代码如下:

 
    
    public class MainActivity extends AppCompatActivity {  
    
 
     private EditText et_name; 
     private RadioGroup rg_group; 
    
 
     @Override 
     protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     //1.     
     et_name = (EditText) findViewById(R.id.et_name); 
     rg_group = (RadioGroup) findViewById(R.id.rg_group); 
    
 
    
 
     } 
    
 
     //                       
     public void click(View view) {  
    
 
     //1.     
     String name = et_name.getText().toString().trim(); 
     //2.  name     
     if (TextUtils.isEmpty(name)){  
     Toast.makeText(this, "name    ", Toast.LENGTH_SHORT).show(); 
     return; 
     } 
     //3.            
     int sex = 0; 
     int checkedRadioButtonId = rg_group.getCheckedRadioButtonId(); 
     switch (checkedRadioButtonId){  
     case R.id.rb_male: //        
     sex = 1; 
     break; 
     case R.id.rb_female: //        
     sex = 2; 
     break; 
     case R.id.rb_other: //         
     sex = 3; 
     break; 
     } 
     //4.          
     if (sex == 0){  
     Toast.makeText(this, "     ", Toast.LENGTH_SHORT).show(); 
     return; 
     } 
     //5.       
     Intent intent = new Intent(this, ResultActivity.class); 
     //6.              map( : ) 
     intent.putExtra("name",name); 
     intent.putExtra("sex",sex); 
     //7.        
     startActivity(intent); 
    
 
     }
 
    
 
    }

 
  
     3.        : 
   
   
     
    
    public class ResultActivity extends AppCompatActivity {  
    
 
     @Override 
     protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_result); 
    
 
     //1.     
     TextView tv_name = (TextView) findViewById(R.id.tv_name); 
     TextView tv_sex = (TextView) findViewById(R.id.tv_sex); 
     TextView tv_result = (TextView) findViewById(R.id.tv_result); 
    
 
     //2.                                            
     Intent intent = getIntent(); //             
     String name = intent.getStringExtra("name"); 
     int sex = intent.getIntExtra("sex", 0); 
     //3.     
     tv_name.setText(name); 
     switch (sex){  
     case 1: //        
     tv_sex.setText(" "); 
     break; 
     case 2: //        
     tv_sex.setText(" "); 
     break; 
     case 3: //         
     tv_sex.setText("  "); 
     break; 
     } 
     //4.        
     Random random = new Random(); 
     int score = random.nextInt(101); 
     if (score> 90){  
     tv_result.setText("              "); 
     }else if (score > 75){  
     tv_result.setText("       ,     "); 
     }else if (score > 60){  
     tv_result.setText("        "); 
     }else{  
     tv_result.setText("       。           ?"); 
     } 
      
    
 
     } 
    } 
   
 
  
 
 
   
   
 
   
  4.       
   
     
    
    public class MainActivity extends AppCompatActivity {  
    
 
     String[] objects = { "         ，         ；         ，         ；         ，         。   ..." 
     ,"  ，       ，       ，       。  ，    ，        。  ，           ，    ..." 
     ,"         ，        ；         ，        。  ，             ，      ， ..." 
     ,"       ，  ：         ，    ；         ，    ；         ，    ；       ..."}; 
    
 
     @Override 
     protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     //1,  listview 
     ListView lv = (ListView) findViewById(R.id.lv); 
     //2.           listview  
     lv.setAdapter(new ArrayAdapter<String>(getApplicationContext(),R.layout.item,R.id.tv,objects)); 
     //3.  listview               button: 
     lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {  
     // list           
     @Override 
     public void onItemClick(AdapterView> parent, View view, int position, long id) {  
    
 
     //4.                           
     String data = objects[position]; 
    
 
    
 
     //5.                  
     Intent intent = new Intent(); 
     //5.1         
     intent.setAction("android.intent.action.SEND"); 
     intent.addCategory("android.intent.category.DEFAULT"); 
     intent.setType("text/plain"); 
    
 
     //5.2  data            
     intent.putExtra("sms_body",data); 
    
 
     //6.     
     startActivity(intent); 
    
 
    
 
     } 
     }); 
     } 
   
 
  
 
 
   
   
 
   
  5.      
  
       2 .3    :   2    　   Ａ     Ｂ  　   Ａ        Ｂ   
    
   
  
    　       ２   ，A    B  , B       , B        A  
    
   
  
              
   
  
       1. UI 
   
  
         
   
  
          2.mainActivity   
   
   
     
    
    public class MainActivity extends AppCompatActivity {  
    
 
     private EditText et_context; 
     private EditText et_number; 
    
 
     @Override 
     protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     //1.     
     et_context = (EditText) findViewById(R.id.et_content); 
     et_number = (EditText) findViewById(R.id.et_number); 
    
 
     } 
    
 
     //       ContactActivity   
     public void add(View view) {  
     Intent intent = new Intent(this, ContactActivity.class); 
    // startActivity(intent); 
     //                                       
     startActivityForResult(intent,1); 
    
 
    
 
     } 
    
 
     //               
     public void click(View view) {  
     Intent intent = new Intent(this, SmsTemplateActivity.class); 
     startActivityForResult(intent,2); 
     } 
    
 
    
 
     //             
     public void send(View view) {  
    
 
     //1.              
     String content = et_context.getText().toString().trim(); 
     String number = et_number.getText().toString().trim(); 
     //2.  smsmanager         
     SmsManager smsmanager = SmsManager.getDefault(); 
    
 
     //3.           
     ArrayList<String> smss = smsmanager.divideMessage(content); 
     for (String sms : smss) {  
    
 
     //4.     
     smsmanager.sendTextMessage(number,null,sms,null,null); 
     } 
    
 
    
 
    
 
    
 
     } 
    
 
    
 
    
 
    
 
     //        finish        
     @Override 
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
     if (resultCode == 10){  
     //              
     //1.             
     String phone = data.getStringExtra("phone"); 
     //2. phone      EditText  
     et_number.setText(phone); 
    
 
     }else if (resultCode == 20){  
     //1.              
     String smsContent = data.getStringExtra("smsContent"); 
     //2. smsContent     EditText    
     et_context.setText(smsContent); 
    
 
     } 
    
 
    
 
    
 
    
 
     } 
    } 
   
 
  
 
 
  
     3.       : 
   
   
     
    
    package com.itheima.smssend; 
    
 
    import android.content.Intent; 
    import android.support.v7.app.AppCompatActivity; 
    import android.os.Bundle; 
    import android.text.format.Formatter; 
    import android.view.View; 
    import android.view.ViewGroup; 
    import android.widget.AdapterView; 
    import android.widget.BaseAdapter; 
    import android.widget.ListView; 
    import android.widget.TextView; 
    
 
    import org.w3c.dom.Text; 
    
 
    import java.util.ArrayList; 
    import java.util.List; 
    
 
    public class ContactActivity extends AppCompatActivity {  
    
 
     private List<Person> lists; 
     @Override 
     protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_contact); 
     //1.  listview            
     ListView lv_contact = (ListView) findViewById(R.id.lv_contact); 
     //2.                     (                 ) 
     lists = new ArrayList<>(); 
     for (int i = 0; i <= 10; i++) {  
     Person person = new Person(); 
     person.setName("zhangsan"+i); 
     person.setPhone("110"+i); 
     lists.add(person); 
     } 
     //3.           listview  
     lv_contact.setAdapter(new MyAdapter()); 
     //4. listview          
     lv_contact.setOnItemClickListener(new AdapterView.OnItemClickListener() {  
     @Override 
     public void onItemClick(AdapterView> parent, View view, int position, long id) {  
     //5.                 
     String phone = lists.get(position).getPhone(); 
    
 
     //5.1             
     Intent intent = new Intent(); 
     intent.putExtra("phone",phone); 
     //5.2           
     setResult(10,intent); 
    
 
     //6.                      
     finish(); //                onActivityResult        
     } 
     }); 
    
 
    
 
     } 
    
 
     //  listview    
     class MyAdapter extends BaseAdapter{  
     @Override 
     public int getCount() {  
     return lists.size(); 
     } 
    
 
     @Override 
     public Object getItem(int position) {  
     return null; 
     } 
    
 
     @Override 
     public long getItemId(int position) {  
     return 0; 
     } 
    
 
     @Override 
     public View getView(int position, View convertView, ViewGroup parent) {  
     //0. listview   
     View view; 
     if (convertView == null){  
     view = View.inflate(getApplicationContext(),R.layout.item,null); 
     }else{  
     view = convertView; 
     } 
     //1.        
     TextView tv_name = (TextView) view.findViewById(R.id.tv_name); 
     TextView tv_phone = (TextView) view.findViewById(R.id.tv_phone); 
     //2.             
     tv_name.setText(lists.get(position).getName()); 
     tv_phone.setText(lists.get(position).getPhone()); 
     return view; 
     } 
     } 
    
 
    
 
    
 
    } 
   
 
  
 
 
  
    4.         
   
   
     
    
    public class SmsTemplateActivity extends AppCompatActivity {  
    
 
     String objects[] = { "    ,     ","    ,     ","    ,     ","     ,     "}; 
     @Override 
     protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_sms_template); 
     //1.     
     ListView listView = (ListView) findViewById(R.id.lv); 
     listView.setAdapter(new ArrayAdapter<String>(getApplicationContext(),R.layout.smstemplate_item,R.id.textView,objects)); 
    
 
     //2. listview       
     listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {  
     @Override 
     public void onItemClick(AdapterView> parent, View view, int position, long id) {  
    
 
     //3.             
     String smsContent = objects[position]; 
     //4.              
     Intent intent = new Intent(); 
     intent.putExtra("smsContent",smsContent); 
     //5.          
     setResult(20,intent); 
     //6.  finsih           
     finish(); 
    
 
    
 
     } 
     }); 
    
 
     } 
    } 
   
 
  
 
 
  6.Activity       
  
       1.onCreate    activity           
   
  
       2.onDestory    activity        
   
  
       3.onStart    activity    (            ) 
   
  
       4.onStop    activity         
   
  
       5.onResume                  (         )  
   
  
       6.onPause                   
   
  
       7.onRestart

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안드로이드 - 다중 페이지 개발

2.意图

3.人品计算器

4.

5.

6.Activity

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