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android CheckBox控件的定义及事件监听

2016-03-23 20:08 656 查看
http://www.beijibear.com/index.php?aid=336

android CheckBox控件的定义及事件监听,本例实现CheckBox控件的定义及点击事件的监听并显示结果,运行效果截图如下:



CheckBox控件的定义,main.xml内容如下:


<?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"

>

<EditText

android:id="@+id/editText1"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="请选择"

/>

<CheckBox

android:id="@+id/beijing"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="北京"

/>

<CheckBox

android:id="@+id/shanghai"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="上海"

/>

<CheckBox

android:id="@+id/shenzhen"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="深圳"

/>

</LinearLayout>

activity CheckBoxTest.java内容如下:


package checkbox.pack;

import android.app.Activity;

import android.os.Bundle;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.EditText;

public class CheckBoxTest extends Activity {

//对控件对象进行声明

CheckBox beijing=null;

CheckBox shanghai=null;

CheckBox shenzhen=null;

EditText editText1=null;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

//通过控件的ID来得到代表控件的对象

beijing=(CheckBox)findViewById(R.id.beijing);

shanghai=(CheckBox)findViewById(R.id.shanghai);

shenzhen=(CheckBox)findViewById(R.id.shenzhen);

editText1=(EditText)findViewById(R.id.editText1);

//给CheckBox设置事件监听

beijing.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){

@Override

public void onCheckedChanged(CompoundButton buttonView,

boolean isChecked) {

// TODO Auto-generated method stub

if(isChecked){

editText1.setText(buttonView.getText()+"选中");

}else{

editText1.setText(buttonView.getText()+"取消选中");

}

}

});

shanghai.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){

@Override

public void onCheckedChanged(CompoundButton buttonView,

boolean isChecked) {

// TODO Auto-generated method stub

if(isChecked){

editText1.setText(buttonView.getText()+"选中");

}else{

editText1.setText(buttonView.getText()+"取消选中");

}

}

});

shenzhen.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){

@Override

public void onCheckedChanged(CompoundButton buttonView,

boolean isChecked) {

// TODO Auto-generated method stub

if(isChecked){

editText1.setText(buttonView.getText()+"选中");

}else{

editText1.setText(buttonView.getText()+"取消选中");

}

}

});

}

}

http://www.beijibear.com/index.php?aid=336

android CheckBox控件的定义及事件监听,本例实现CheckBox控件的定义及点击事件的监听并显示结果,运行效果截图如下:



CheckBox控件的定义,main.xml内容如下:


<?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"

>

<EditText

android:id="@+id/editText1"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="请选择"

/>

<CheckBox

android:id="@+id/beijing"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="北京"

/>

<CheckBox

android:id="@+id/shanghai"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="上海"

/>

<CheckBox

android:id="@+id/shenzhen"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="深圳"

/>

</LinearLayout>

activity CheckBoxTest.java内容如下:


package checkbox.pack;

import android.app.Activity;

import android.os.Bundle;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.EditText;

public class CheckBoxTest extends Activity {

//对控件对象进行声明

CheckBox beijing=null;

CheckBox shanghai=null;

CheckBox shenzhen=null;

EditText editText1=null;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

//通过控件的ID来得到代表控件的对象

beijing=(CheckBox)findViewById(R.id.beijing);

shanghai=(CheckBox)findViewById(R.id.shanghai);

shenzhen=(CheckBox)findViewById(R.id.shenzhen);

editText1=(EditText)findViewById(R.id.editText1);

//给CheckBox设置事件监听

beijing.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){

@Override

public void onCheckedChanged(CompoundButton buttonView,

boolean isChecked) {

// TODO Auto-generated method stub

if(isChecked){

editText1.setText(buttonView.getText()+"选中");

}else{

editText1.setText(buttonView.getText()+"取消选中");

}

}

});

shanghai.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){

@Override

public void onCheckedChanged(CompoundButton buttonView,

boolean isChecked) {

// TODO Auto-generated method stub

if(isChecked){

editText1.setText(buttonView.getText()+"选中");

}else{

editText1.setText(buttonView.getText()+"取消选中");

}

}

});

shenzhen.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){

@Override

public void onCheckedChanged(CompoundButton buttonView,

boolean isChecked) {

// TODO Auto-generated method stub

if(isChecked){

editText1.setText(buttonView.getText()+"选中");

}else{

editText1.setText(buttonView.getText()+"取消选中");

}

}

});

}

}
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