Android常用UI

  详细介绍列表视图(ListView)、单选(RadioGroup)、多选(CheckBox)、下拉列表(Spinner)、菜单(Menu)、内容提示文本框(AutoCompleteTextView)、手势识别(GestureOverlayView)、网页视图(WebView)。

1.列表视图（ListView）

 

XML配置

     在主界面中配置<ListView>标签

     在res/layout/文件夹下创建一个新的xml文件指定每个条目的布局

Java代码构建ListView

     获取ListView对象

     设置一个Adapter

          用适配器封装有两种方式：

             1.SimpleAdapter：以List<Map<String,?>>形式封装数据

             2.SimpleCursorAdapter：以Cursor对象封装数据，Cursor中需要有“_id”一列

添加OnItemClickListener

     调用ListView的getItemAtPosition(int)方法可以获取封装数据的容器

     如果传入的是SimpleAdapter，获取到的就是一个Map<String,?>

     如果传入的是SimpleCursorAdapter，获得到的就是一个Cursor，并且Cursor以指向选中的一条记录

 

 示例：

用SimpleAdapter进行数据绑定

public class MainActivity extends Activity {
    private PersonService service;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        service = new PersonService(this);
        ListView listView = (ListView) this.findViewById(R.id.listView);

        //获取到集合数据
        List<Person> persons = service.getScrollData(0, 10);
        List<HashMap<String, Object>> data = new ArrayList<HashMap<String,Object>>();
        for(Person person : persons){
            HashMap<String, Object> item = new HashMap<String, Object>();
            item.put("id", person.getId());
            item.put("name", person.getName());
            item.put("phone", person.getPhone());
            item.put("amount", person.getAmount());
            data.add(item);
        }
       //创建SimpleAdapter适配器将数据绑定到item显示控件上
       SimpleAdapter adapter = new SimpleAdapter(this, data, R.layout.item,
                new String[]{"name", "phone", "amount"}, new int[]{R.id.name, R.id.phone, R.id.amount});
       //实现列表的显示
       listView.setAdapter(adapter);
       //条目点击事件
       listView.setOnItemClickListener(new ItemClickListener());
    }
       //获取点击事件
    private final class ItemClickListener implements OnItemClickListener{

        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            ListView listView = (ListView) parent;
            HashMap<String, Object> data = (HashMap<String, Object>) listView.getItemAtPosition(position);
            String personid = data.get("id").toString();
            Toast.makeText(getApplicationContext(), personid, 1).show();
        }
    }
}

public class MainActivity extends Activity { private PersonService service; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); service = new PersonService(this); ListView listView = (ListView) this.findViewById(R.id.listView); //获取到集合数据 List<Person> persons = service.getScrollData(0, 10); List<HashMap<String, Object>> data = new ArrayList<HashMap<String,Object>>(); for(Person person : persons){ HashMap<String, Object> item = new HashMap<String, Object>(); item.put("id", person.getId()); item.put("name", person.getName()); item.put("phone", person.getPhone()); item.put("amount", person.getAmount()); data.add(item); } //创建SimpleAdapter适配器将数据绑定到item显示控件上 SimpleAdapter adapter = new SimpleAdapter(this, data, R.layout.item, new String[]{"name", "phone", "amount"}, new int[]{R.id.name, R.id.phone, R.id.amount}); //实现列表的显示 listView.setAdapter(adapter); //条目点击事件 listView.setOnItemClickListener(new ItemClickListener()); } //获取点击事件 private final class ItemClickListener implements OnItemClickListener{ public void onItemClick(AdapterView<?> parent, View view, int position, long id) { ListView listView = (ListView) parent; HashMap<String, Object> data = (HashMap<String, Object>) listView.getItemAtPosition(position); String personid = data.get("id").toString(); Toast.makeText(getApplicationContext(), personid, 1).show(); } } }

 用SimpleCursorAdapter进行数据绑定

public class MainActivity extends Activity {
    private PersonService service;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        service = new PersonService(this);
        ListView listView = (ListView) this.findViewById(R.id.listView);
        //获取游标
        Cursor cursor = service.getCursorScrollData(0, 10);
        //创建SimpleCursorAdapter适配器将数据绑定到item显示控件上
        SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.item, cursor,
                new String[]{"name", "phone", "amount"}, new int[]{R.id.name, R.id.phone, R.id.amount});
        listView.setAdapter(adapter);
        //条目点击事件
        listView.setOnItemClickListener(new ItemClickListener());
    }

    private final class ItemClickListener implements OnItemClickListener{

        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            ListView listView = (ListView) parent;
            Cursor cursor = (Cursor) listView.getItemAtPosition(position);
            String personid = String.valueOf(cursor.getInt(cursor.getColumnIndex("_id")));
            Toast.makeText(getApplicationContext(), personid, 1).show();
        }
    }
}

public class MainActivity extends Activity { private PersonService service; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); service = new PersonService(this); ListView listView = (ListView) this.findViewById(R.id.listView); //获取游标 Cursor cursor = service.getCursorScrollData(0, 10); //创建SimpleCursorAdapter适配器将数据绑定到item显示控件上 SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.item, cursor, new String[]{"name", "phone", "amount"}, new int[]{R.id.name, R.id.phone, R.id.amount}); listView.setAdapter(adapter); //条目点击事件 listView.setOnItemClickListener(new ItemClickListener()); } private final class ItemClickListener implements OnItemClickListener{ public void onItemClick(AdapterView<?> parent, View view, int position, long id) { ListView listView = (ListView) parent; Cursor cursor = (Cursor) listView.getItemAtPosition(position); String personid = String.valueOf(cursor.getInt(cursor.getColumnIndex("_id"))); Toast.makeText(getApplicationContext(), personid, 1).show(); } } }

 

2.单选(RadioGroup)

定义<RadioGroup> 

在<RadioGroup>中定义<RadioButton>和<Button>

处理Button点击事件

根据ID获取RadioGroup对象，调用其getCheckedRadioButtonId()方法可以获取其中被选中的RadioGroup的ID

 main.xml:

<RadioGroup
  android:id="@+id/radioGroup"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:orientation="horizontal"
  >
    <RadioButton
      android:id="@+id/java"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:text="Java"
      android:layout_weight="1"
    />
    <RadioButton
      android:id="@+id/net"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:text=".NET"
      android:layout_weight="1"
    />
    <RadioButton
      android:id="@+id/php"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:text="PHP"
      android:layout_weight="1"
    />
     <Button
      android:id="@+id/php"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:text="确定"
      android:onClick="submitRadio"
      android:layout_weight="1"
     />
</RadioGroup>

<RadioGroup android:id="@+id/radioGroup" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <RadioButton android:id="@+id/java" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Java" android:layout_weight="1" /> <RadioButton android:id="@+id/net" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text=".NET" android:layout_weight="1" /> <RadioButton android:id="@+id/php" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="PHP" android:layout_weight="1" /> <Button android:id="@+id/php" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="确定" android:onClick="submitRadio" android:layout_weight="1" /> </RadioGroup>

MainActivity:

public void submitRadio(View view){
    //获取选中按钮的ID
    int id =radioGroup.getCheckedRadioButtonId();
    RadioButton radioButton=(RadioButton)findViewById(id);
    Toast.makeText(this,radioButton.getText(), 0).show();
}

public void submitRadio(View view){ //获取选中按钮的ID int id =radioGroup.getCheckedRadioButtonId(); RadioButton radioButton=(RadioButton)findViewById(id); Toast.makeText(this,radioButton.getText(), 0).show(); }

3.多选(CheckBox)

定义若干<CheckBox>和一个<Button>

处理Button的点击事件

根据findViewById获取每个CheckBox，调用其isChecked()方法判断是否被选中

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    >
    <CheckBox
      android:id="@+id/javaCheckBox"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
      android:text="Java"
      android:layout_weight="1"
    />
    <CheckBox
      android:id="@+id/netCheckBox"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
      android:text=".NET"
      android:layout_weight="1"
    />
    <CheckBox
      android:id="@+id/phpCheckBox"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
      android:text="PHP"
      android:layout_weight="1"
    />
       <Button
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
      android:text="确定"
      android:onClick="submitCheckBox"
      android:layout_weight="1"
     />
 </LinearLayout>

<LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" > <CheckBox android:id="@+id/javaCheckBox" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Java" android:layout_weight="1" /> <CheckBox android:id="@+id/netCheckBox" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text=".NET" android:layout_weight="1" /> <CheckBox android:id="@+id/phpCheckBox" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="PHP" android:layout_weight="1" /> <Button android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="确定" android:onClick="submitCheckBox" android:layout_weight="1" /> </LinearLayout>

4.下拉列表(Spinner)

定义<Spinner>标签

创建一个适配器

获取Spinner标签，调用setAdapter(SpinnerAdapter adapter)方法设置一个适配器

调用setOnItemSelectedListener(OnItemSelectedListener listener)方法设置监听器监听选中事件

使用字符串构建适配器

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    spinner = (Spinner) findViewById(R.id.spinner);
    generateSpinner();
}

private void generateSpinner() {
    //android.R.layout.simple_spinner_item下拉列表的样式
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    adapter.add("Java");
    adapter.add(".NET");
    adapter.add("PHP");
    spinner.setAdapter(adapter);
    //监听器
    spinner.setOnItemSelectedListener(new OnItemSelectedListener(){
        public void onItemSelected(AdapterView<?> parent, View view,
                int position, long id) {
            String selection=(String)parent.getItemAtPosition(position);
            Toast.makeText(getApplicationContext(), selection, 0).show();
        }
        public void onNothingSelected(AdapterView<?> arg0) {
        }
    });
}

public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); spinner = (Spinner) findViewById(R.id.spinner); generateSpinner(); } private void generateSpinner() { //android.R.layout.simple_spinner_item下拉列表的样式 ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); adapter.add("Java"); adapter.add(".NET"); adapter.add("PHP"); spinner.setAdapter(adapter); //监听器 spinner.setOnItemSelectedListener(new OnItemSelectedListener(){ public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { String selection=(String)parent.getItemAtPosition(position); Toast.makeText(getApplicationContext(), selection, 0).show(); } public void onNothingSelected(AdapterView<?> arg0) { } }); }

使用JavaBean构建适配器

private void generateSpinnerByJavaBean() {
    ArrayAdapter<User> adapter = new ArrayAdapter<User>(this, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    adapter.add(new User(1,"aaa","[email protected]"));
    adapter.add(new User(2,"bbb","[email protected]"));
    adapter.add(new User(3,"ccc","[email protected]"));
    spinner.setAdapter(adapter);
    //监听器
    spinner.setOnItemSelectedListener(new OnItemSelectedListener(){
        public void onItemSelected(AdapterView<?> parent, View view,
                int position, long id) {
            User user=(User)parent.getItemAtPosition(position);
            Toast.makeText(getApplicationContext(), user.toString(), 0).show();
        }
        public void onNothingSelected(AdapterView<?> arg0) {
        }
    });
}

private void generateSpinnerByJavaBean() { ArrayAdapter<User> adapter = new ArrayAdapter<User>(this, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); adapter.add(new User(1,"aaa","[email protected]")); adapter.add(new User(2,"bbb","[email protected]")); adapter.add(new User(3,"ccc","[email protected]")); spinner.setAdapter(adapter); //监听器 spinner.setOnItemSelectedListener(new OnItemSelectedListener(){ public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { User user=(User)parent.getItemAtPosition(position); Toast.makeText(getApplicationContext(), user.toString(), 0).show(); } public void onNothingSelected(AdapterView<?> arg0) { } }); }

使用资源文件构建适配器

支持国际化

资源文件：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="items">
        <item>Java</item>
        <item>.NET</item>
        <item>PHP</item>
    </string-array>
</resources>

<?xml version="1.0" encoding="utf-8"?> <resources> <string-array name="items"> <item>Java</item> <item>.NET</item> <item>PHP</item> </string-array> </resources>

MainActivity

private void generateSpinnerByResource() {
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.items, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(adapter);
    spinner.setOnItemSelectedListener(new OnItemSelectedListener(){
        public void onItemSelected(AdapterView<?> parent, View view,
                int position, long id) {
            CharSequence selection=(CharSequence)parent.getItemAtPosition(position);
            Toast.makeText(getApplicationContext(), selection, 0).show();
        }
        public void onNothingSelected(AdapterView<?> arg0) {
        }
    });
}

private void generateSpinnerByResource() { ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.items, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(adapter); spinner.setOnItemSelectedListener(new OnItemSelectedListener(){ public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { CharSequence selection=(CharSequence)parent.getItemAtPosition(position); Toast.makeText(getApplicationContext(), selection, 0).show(); } public void onNothingSelected(AdapterView<?> arg0) { } }); }

 

自定义适配器样式

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.custom, R.id.content);

R.layout.custom 布局文件ID

R.id.content 哪一个组件用来显示文本

自定义布局文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  >
  <ImageView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:src="@android:drawable/btn_radio"
  />
  <TextView
      android:id="@+id/content"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginLeft="30dp"
      android:textColor="#FFFF0000"
      android:textSize="30sp"
  />
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@android:drawable/btn_radio" /> <TextView android:id="@+id/content" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="30dp" android:textColor="#FFFF0000" android:textSize="30sp" /> </LinearLayout>

activity:

private void generateSpinnerByResource() {
    ArrayAdapter<String> adapter =new ArrayAdapter<String>(this,R.layout.item,R.id.content);
    adapter.add("java");
    adapter.add(".NET");
    adapter.add("php");
    spinner.setAdapter(adapter);
}

private void generateSpinnerByResource() { ArrayAdapter<String> adapter =new ArrayAdapter<String>(this,R.layout.item,R.id.content); adapter.add("java"); adapter.add(".NET"); adapter.add("php"); spinner.setAdapter(adapter); }

5.菜单(Menu)

    

添加菜单项

1.重写Actvity的onCreateOptionsMenu(Menu menu)方法

2.添加菜单项

     调用方法中参数menu的add(CharSequence title) 方法

3.添加子菜单

    调用menu对象的addSubMenu(final CharSequence title)

    该方法返回一个SubMenu对象

4.添加子菜单的菜单项

   调用SubMenu对象的add(CharSequence title) 方法

处理菜单点击事件

重写Activity的onOptionsItemSelected(MenuItem item) 方法

     参数item即为被选中的菜单项

/*
 * 点击菜单按钮时会调用这个方法
 * 支持子菜单，子菜单中不能再创建子菜单
 */
public boolean onCreateOptionsMenu(Menu menu) {
    menu.add(Menu.NONE,0,1,"增加1");
    menu.add(Menu.NONE,1,0,"增加2");
    menu.add("修改");
    menu.add("删除");
    //创建子菜单
    SubMenu subMenu=menu.addSubMenu("查询");
    subMenu.add("按id查询");
    subMenu.add("按名字查询");
    subMenu.add("按邮箱查询");
    return super.onCreateOptionsMenu(menu);
}

/*
 * 点击菜单项会执行这个方法
 * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem)
 */
public boolean onOptionsItemSelected(MenuItem item) {
    Toast.makeText(this, item.getTitle(), 0).show();
    return super.onOptionsItemSelected(item);
}

/* * 点击菜单按钮时会调用这个方法 * 支持子菜单，子菜单中不能再创建子菜单 */ public boolean onCreateOptionsMenu(Menu menu) { menu.add(Menu.NONE,0,1,"增加1"); menu.add(Menu.NONE,1,0,"增加2"); menu.add("修改"); menu.add("删除"); //创建子菜单 SubMenu subMenu=menu.addSubMenu("查询"); subMenu.add("按id查询"); subMenu.add("按名字查询"); subMenu.add("按邮箱查询"); return super.onCreateOptionsMenu(menu); } /* * 点击菜单项会执行这个方法 * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem) */ public boolean onOptionsItemSelected(MenuItem item) { Toast.makeText(this, item.getTitle(), 0).show(); return super.onOptionsItemSelected(item); }

6.手势识别(GestureOverlayView)

创建手势库

导入SDK中的工程

   android-sdk-windows\samples\android-8\GestureBuilder

   这个工程不能直接导入，需要添加三个配置文件：.classpath、.project、default.properties

将工程部署到手机中，创建手势库

   手势库会存储在手机SD卡的根目录

使用手势识别

    

XML配置:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <android.gesture.GestureOverlayView
        android:id="@+id/gov"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:gestureStrokeType="multiple"
        >
        <ImageView
            android:id="@+id/img"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            />
    </android.gesture.GestureOverlayView>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <android.gesture.GestureOverlayView android:id="@+id/gov" android:layout_width="fill_parent" android:layout_height="fill_parent" android:gestureStrokeType="multiple" > <ImageView android:id="@+id/img" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </android.gesture.GestureOverlayView> </LinearLayout>

Java代码:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    gov = (GestureOverlayView) findViewById(R.id.gov);
    img=(ImageView) findViewById(R.id.img);
    //获取到手势库，并加载
    library = GestureLibraries.fromRawResource(this, R.raw.gestures);
    library.load();
    gov.addOnGesturePerformedListener(new MyListener());
}
private final class MyListener implements OnGesturePerformedListener {
    public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) {
        //手势库来匹配手势
        ArrayList<Prediction> list = library.recognize(gesture);

        //查询手势库匹配的分值并打印
        for(Prediction p:list){
            System.out.println(p.name+":"+p.score);
        }

        //获取匹配度最高的选项
        Prediction p =list.get(0);

        //如果匹配值小于3则不能识别
        if(p.score<3){
            Toast.makeText(getApplicationContext(), "手势不能识别", 0).show();
        }else if("true".equals(p.name)){
            //执行的内容
        }else if("o".equals(p.name)){
            //执行的内容
        }else if("x".equals(p.name)){
            //执行的内容
        }
    }
}

public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); gov = (GestureOverlayView) findViewById(R.id.gov); img=(ImageView) findViewById(R.id.img); //获取到手势库，并加载 library = GestureLibraries.fromRawResource(this, R.raw.gestures); library.load(); gov.addOnGesturePerformedListener(new MyListener()); } private final class MyListener implements OnGesturePerformedListener { public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) { //手势库来匹配手势 ArrayList<Prediction> list = library.recognize(gesture); //查询手势库匹配的分值并打印 for(Prediction p:list){ System.out.println(p.name+":"+p.score); } //获取匹配度最高的选项 Prediction p =list.get(0); //如果匹配值小于3则不能识别 if(p.score<3){ Toast.makeText(getApplicationContext(), "手势不能识别", 0).show(); }else if("true".equals(p.name)){ //执行的内容 }else if("o".equals(p.name)){ //执行的内容 }else if("x".equals(p.name)){ //执行的内容 } } }

7.网页视图(WebView)

WebView(网络视图)能加载显示网页，它使用了WebKit渲染引擎加载显示网页，WebKit是android手机中内置了一款高性能内核浏览器。

XML配置：

<WebView
    android:id="@+id/webView"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    />

<WebView android:id="@+id/webView" android:layout_width="fill_parent" android:layout_height="fill_parent" />

java代码：

WebView webView = (WebView) findViewById(R.id.webView);
// 或取内容
String url = editText.getText().toString();
// 设置是否可缩放
webView.getSettings().setBuiltInZoomControls(true);
// 设置是否支持脚本
webView.getSettings().setJavaScriptEnabled(true);
// 设置客户端(谷歌Chrome客户端)
webView.setWebChromeClient(new WebChromeClient());
// 加载页面
webView.loadUrl(url);

WebView webView = (WebView) findViewById(R.id.webView); // 或取内容 String url = editText.getText().toString(); // 设置是否可缩放 webView.getSettings().setBuiltInZoomControls(true); // 设置是否支持脚本 webView.getSettings().setJavaScriptEnabled(true); // 设置客户端(谷歌Chrome客户端) webView.setWebChromeClient(new WebChromeClient()); // 加载页面 webView.loadUrl(url);

 

8.内容提示文本框(AutoCompleteTextView)

单次提示

   XML文件：

  <AutoCompleteTextView
    android:id="@+id/actv"
    android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:completionThreshold="1"
    />

<AutoCompleteTextView android:id="@+id/actv" android:layout_width="fill_parent" android:layout_height="wrap_content" android:completionThreshold="1" />

   Java代码：

private void generateActv() {
    AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.actv);
    String[] items = { "tom", "tony", "terry", "付东", "付荣", "付贵" };
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, items);
    actv.setAdapter(adapter);
}

private void generateActv() { AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.actv); String[] items = { "tom", "tony", "terry", "付东", "付荣", "付贵" }; ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, items); actv.setAdapter(adapter); }

 

 多次提示

 XML文件：

  <MultiAutoCompleteTextView
    android:id="@+id/mactv"
    android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:completionThreshold="1"
    />

<MultiAutoCompleteTextView android:id="@+id/mactv" android:layout_width="fill_parent" android:layout_height="wrap_content" android:completionThreshold="1" />

Java代码：

private void generateMactv() {
    MultiAutoCompleteTextView mactv = (MultiAutoCompleteTextView) findViewById(R.id.mactv);
    String[] items = { "tom", "tony", "terry", "付东", "付荣", "付贵" };
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, items);
    mactv.setAdapter(adapter);
    //用分隔符进行分割
    mactv.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());
}