原帖地址：http://www.iteye.com/topic/1060815#

下面是各种常用控件的事件监听的使用

①EditText（编辑框）的事件监听---OnKeyListener

②RadioGroup、RadioButton（单选按钮）的事件监听---OnCheckedChangeListener

③CheckBox（多选按钮）的事件监听---OnCheckedChangeListener

④Spinner（下拉列表）的事件监听---OnItemSelectedListener

⑤Menu（菜单）的事件处理---onMenuItemSelected

⑥Dialog（对话框）的事件监听---DialogInterface.OnClickListener()

至于Button的事件监听，可以在上一篇博客中看到。

第一个例子：EditText的事件监听


package org.hualang.eventtest2;import android.app.Activity;import android.os.Bundle;import android.view.KeyEvent;import android.view.View;import android.widget.EditText;import android.widget.TextView;public class EventTest2 extends Activity {    /** Called when the activity is first created. */private TextView mytext;private EditText edittext;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        mytext = (TextView)findViewById(R.id.mytext);        edittext = (EditText)findViewById(R.id.edittext);        /**         * 设置当EditText为空，则提示“请输入账号”         * 在配置文件main.xml中可以用android:hint="请输入账号"来实现         */        edittext.setHint("请输入账号");        //下面为EditText事件监听        edittext.setOnKeyListener(new EditText.OnKeyListener()        {@Overridepublic boolean onKey(View arg0, int arg1, KeyEvent arg2) {//得到文字，显示在TextView中mytext.setText("内容："+edittext.getText().toString());return false;}                });    }}

main.xml 
<?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"    ><TextView      android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:id="@+id/mytext"    /><EditTextandroid:id="@+id/edittext"android:layout_width="fill_parent"android:layout_height="wrap_content"android:textSize="10pt"/></LinearLayout>

第二个例子：单选按钮的事件监听处理

package org.hualang.eventtest;import android.app.Activity;import android.os.Bundle;import android.view.Gravity;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.Toast;public class EventTest3 extends Activity {    /** Called when the activity is first created. */private RadioGroup group;private RadioButton radio1,radio2,radio3,radio4;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                group = (RadioGroup)findViewById(R.id.radiogroup1);        radio1 = (RadioButton)findViewById(R.id.button1);        radio2 = (RadioButton)findViewById(R.id.button2);        radio3 = (RadioButton)findViewById(R.id.button3);        radio4 = (RadioButton)findViewById(R.id.button4);                group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {// TODO Auto-generated method stubif (checkedId == radio2.getId()){showMessage("正确答案：" + radio2.getText()+",恭喜你，答对了");}else{showMessage("对不起，虽然很多，但不是公认的最多");}}});    }    public void showMessage(String str)    {    Toast toast = Toast.makeText(this, str, Toast.LENGTH_SHORT);    toast.setGravity(Gravity.TOP, 0, 220);    toast.show();    }}main.xml 
<?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"    ><TextViewandroid:id="@+id/mytextview"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="哪个城市的美女最多？"/><RadioGroupandroid:id="@+id/radiogroup1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="vertical"><RadioButtonandroid:id="@+id/button1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="杭州"/><RadioButtonandroid:id="@+id/button2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="重庆"/><RadioButtonandroid:id="@+id/button3"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="成都"/><RadioButtonandroid:id="@+id/button4"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="香港"/></RadioGroup></LinearLayout>第三个例子：复选框的事件处理package org.hualang.eventtest4;import android.app.Activity;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.widget.Button;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.CompoundButton.OnCheckedChangeListener;import android.widget.Toast;public class EventTest4 extends Activity { /** Called when the activity is first created. */ private CheckBox ch1,ch2,ch3,ch4,ch5; private Button mybutton; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main);  mybutton = (Button)findViewById(R.id.mybutton); ch1 = (CheckBox)findViewById(R.id.check1); ch2 = (CheckBox)findViewById(R.id.check2); ch3 = (CheckBox)findViewById(R.id.check3); ch4 = (CheckBox)findViewById(R.id.check4); ch5 = (CheckBox)findViewById(R.id.check5);  ch1.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener() {   @Override   public void onCheckedChanged(CompoundButton arg0, boolean arg1) {    // TODO Auto-generated method stub    if(ch1.isChecked())    {     showMessage("你选择了"+ch1.getText());    }   }   }); ch2.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener() {   @Override   public void onCheckedChanged(CompoundButton arg0, boolean arg1) {    // TODO Auto-generated method stub    if(ch3.isChecked())    {     showMessage("你选择了"+ch2.getText());    }   }   }); ch3.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener() {   @Override   public void onCheckedChanged(CompoundButton arg0, boolean arg1) {    // TODO Auto-generated method stub    if(ch3.isChecked())    {     showMessage("你选择了"+ch3.getText());    }   }   }); ch4.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener() {   @Override   public void onCheckedChanged(CompoundButton arg0, boolean arg1) {    // TODO Auto-generated method stub    if(ch4.isChecked())    {     showMessage("你选择了"+ch4.getText());    }   }   }); ch5.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener() {   @Override   public void onCheckedChanged(CompoundButton arg0, boolean arg1) {    // TODO Auto-generated method stub    if(ch5.isChecked())    {     showMessage("你选择了"+ch5.getText());    }   }   });  mybutton.setOnClickListener(new Button.OnClickListener() {   @Override   public void onClick(View arg0) {    // TODO Auto-generated method stub    int num = 0;    if(ch1.isChecked())    {     num++;    }    if(ch2.isChecked())    {     num++;    }    if(ch3.isChecked())    {     num++;    }    if(ch4.isChecked())    {     num++;    }    if(ch5.isChecked())    {     num++;    }        showMessage("谢谢参与，您一共选择了"+num+"项");       }   }); }   public void showMessage(String str) {  Toast toast = Toast.makeText(this, str, Toast.LENGTH_SHORT);  toast.setGravity(Gravity.TOP, 0, 220);  toast.show(); }}main.xml<?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" > <TextView   android:layout_width="fill_parent"   android:layout_height="wrap_content"   android:text="你喜欢哪些智能手机系统"  /> <CheckBox  android:id="@+id/check1"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="苹果 ios" /> <CheckBox  android:id="@+id/check2"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="谷歌 Android" /> <CheckBox  android:id="@+id/check3"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="RIM BlackBerry" /> <CheckBox  android:id="@+id/check4"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="微软 Windows phone 7" /> <CheckBox  android:id="@+id/check5"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="诺基亚 symbian" /> <Button  android:id="@+id/mybutton"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="确定" /></LinearLayout>第四个例子：Spinner下拉菜单的事件处理package org.hualang.eventtest5;import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.TextView;  public class EventTest5 extends Activity {  /** Called when the activity is first created. */  private static final String[] citys={"杭州","北京","成都","大连","深圳","南京"};  private TextView text;  private Spinner spinner;  private ArrayAdapter<String> adapter;  @Override  public void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.main);  text=(TextView)findViewById(R.id.text);  spinner=(Spinner)findViewById(R.id.spinner);   //将可选内容与ArrayAdapter连接  adapter=new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,citys);  //设置下拉列表风格  adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);  //将adapter添加到spinner中  spinner.setAdapter(adapter);  //添加Spinner事件监听  spinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener()  {   @Override  public void onItemSelected(AdapterView<?> arg0, View arg1,  int arg2, long arg3) {  // TODO Auto-generated method stub  text.setText("你所在的城市是："+citys[arg2]);  //设置显示当前选择的项  arg0.setVisibility(View.VISIBLE);  }   @Override  public void onNothingSelected(AdapterView<?> arg0) {  // TODO Auto-generated method stub   }   });  } } main.xml<?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"  > <TextView  android:id="@+id/text"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="您所在的城市"  /> <Spinner  android:id="@+id/spinner"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_centerHorizontal="true" /> </LinearLayout>第五个例子：Menu（菜单）的事件处理

package org.hualang.eventtest6;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuInflater;import android.view.MenuItem;import android.widget.Toast;public class EventTest6 extends Activity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);    }@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// TODO Auto-generated method stubMenuInflater inflater = getMenuInflater();//设置menu界面为res/menu/menu.xmlinflater.inflate(R.menu.menu, menu);return true;}@Overridepublic boolean onMenuItemSelected(int featureId, MenuItem item) {//得到当前选中的MenuItem的IDint itemId = item.getItemId();switch(itemId){case R.id.apple:Toast toast = Toast.makeText(this, "这是苹果", Toast.LENGTH_SHORT);toast.show();break;case R.id.banana:Toast toast2 = Toast.makeText(this, "这是香蕉", Toast.LENGTH_SHORT);toast2.show();break;case R.id.exit:EventTest6.this.finish();break;}return true;}        }

main.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
 <item android:id="@+id/apple"
  android:title="苹果"
 />
 <item android:id="@+id/banana"
  android:title="香蕉"
  />
 <item android:id="@+id/exit"
  android:title="退出"
  />
</menu>
第六个例子：对话框的事件处理
package org.hualang.dialog;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;

public class MainActivity extends Activity {
 /** Called when the activity is first created. */
 ProgressDialog myDialog;
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 
 Dialog dialog = new AlertDialog.Builder(MainActivity.this)
 .setTitle("登录提示")
 .setMessage("这里需要登录")
 .setPositiveButton("确定", new DialogInterface.OnClickListener() {
   
   @Override
   public void onClick(DialogInterface dialog, int which) {
    // TODO Auto-generated method stub
    LayoutInflater factory = LayoutInflater.from(MainActivity.this);
    final View DialogView = factory.inflate(R.layout.dialog, null);
    AlertDialog dlg = new AlertDialog.Builder(MainActivity.this)
    .setTitle("登录框")
    .setView(DialogView)
    .setPositiveButton("确定", new DialogInterface.OnClickListener() {
     
     @Override
     public void onClick(DialogInterface dialog, int whichButton) {
      // TODO Auto-generated method stub
      myDialog = ProgressDialog.show(MainActivity.this, "请等待...", "正在为你登录", true);
      new Thread()
      {
       public void run()
       {
        try
        {
         sleep(3000);
        }catch(Exception e)
        {
         e.printStackTrace();
        }finally
        {
         myDialog.dismiss();
        }
       }
      }.start();
     }
    }).setNegativeButton("取消",
      new DialogInterface.OnClickListener() {
       
       @Override
       public void onClick(DialogInterface dialog, int which) {
        // TODO Auto-generated method stub
        MainActivity.this.finish();
       }
      }).create();
    dlg.show();
   }
  }).setNeutralButton("退出", new DialogInterface.OnClickListener() {
   
   @Override
   public void onClick(DialogInterface dialog, int which) {
    // TODO Auto-generated method stub
    MainActivity.this.finish();
   }
  }).create();
 dialog.show();
 
 }
}
xml文件
<?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"
 >
 <TextView 
  android:id="@+id/username"
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content"
  android:layout_marginLeft="20dip"
  android:layout_marginRight="20dip" 
  android:text="账号"
  android:gravity="left"
  android:textAppearance="?android:attr/textAppearanceMedium"
 />
  <EditText
   android:id="@+id/myusername"
   android:layout_height="wrap_content"
   android:layout_width="fill_parent"
   android:layout_marginLeft="20dip"
   android:layout_marginRight="20dip"
   android:scrollHorizontally="true"
   android:autoText="false"
   android:capitalize="none"
   android:gravity="fill_horizontal"
   android:textAppearance="?android:attr/textAppearanceMedium"
  />
  <TextView
   android:id="@+id/password"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:layout_marginLeft="20dip"
   android:layout_marginRight="20dip"
   android:text="密码"
   android:gravity="left"
   android:textAppearance="?android:attr/textAppearanceMedium"
  />
  <EditText
   android:id="@+id/mypassword"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:layout_marginLeft="20dip"
   android:layout_marginRight="20dip"
   android:scrollHorizontally="true"
   android:autoText="false"
   android:capitalize="none"
   android:gravity="fill_horizontal"
   android:password="true"
  />
</LinearLayout>

 
 

 

 


   








更多相关文章
	

    

  1. android给 TextView 加上效果和事件响应 判断是否点击函数
  2. Android开发之《Android应用开发揭秘》UI事件汇总
  3. 懒人爱家务_onInterceptTouchEvent与onTouchEvent
  4. Android：一个很简单的扑克游戏(从项目资源创建图像)
  5. Android(安卓)ViewPager2使用小计
  6. Android按键事件——上层与驱动的映射
  7. Android自定义控件：Android(安卓)L控件点击水波纹的实现（源码 + De
  8. 在Android的webview中定制js的alert,confirm和prompt对话框的方
  9. android 与HTM5 互调入门例子



随机推荐
	

    

  1. 
Android(安卓)NumberPicker详细使用
    2. 

  2. 
android中自定义的一个可以弹出类似于提
    3. 

  3. 
安卓中颜色种类
    4. 

  4. 
Android(安卓)MIME类型与文件后缀名匹配
    5. 

  5. 
LinearLayout中设置 水平且垂直 居中
    6. 

  6. 
GridView 实现水平拖拉效果
    7. 

  7. 
Android(安卓)APK 反编译工具
    8. 

  8. 
Android(安卓)改变ImageView图片的Bitmap
    9. 

  9. 
android 还原短信
    10. 

  10. 
android studio在终端执行gradlew命令，报
    11.