Android CheckBox用法 Android开发中CheckBox的简单用法示例
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本文实例讲述了Android开发中CheckBox的简单用法。分享给大家供大家参考，具体如下：
CheckBox是一种在界面开发中比较常见的控件，Android中UI开发也有CheckBox，简单的说下它的使用，每个CheckBox都要设置监听，设置的监听为CompouButton.OnCheckedChangedListener()。
package com.zhuguangwei;
import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;
public class ChkBoxActivity extends Activity {
private TextView myTextView;
private CheckBox myApple;
private CheckBox myOrange;
private CheckBox myBanana;
private CheckBox myWaterMelon;
private CheckBox myStrawBerry;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//通过ID找到TextView
myTextView = (TextView) findViewById(R.id.myTextView);
//通过ID找到这几个CheckBox
myApple = (CheckBox) findViewById(R.id.Apple);
myOrange = (CheckBox) findViewById(R.id.Orange);
myBanana = (CheckBox) findViewById(R.id.banana);
myWaterMelon = (CheckBox) findViewById(R.id.watermelon);
myStrawBerry = (CheckBox) findViewById(R.id.strawberry);
myApple.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked){
myTextView.append(myApple.getText().toString());
}
else{
if(myTextView.getText().toString().contains("苹果")){
myTextView.setText(myTextView.getText().toString().replace("苹果", ""));
}
}
}
});
myOrange.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked){
myTextView.append(myOrange.getText().toString());
}
else{
if(myTextView.getText().toString().contains("橘子")){
myTextView.setText(myTextView.getText().toString().replace("橘子", ""));
}
}
}
});
myBanana.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked){
myTextView.append(myBanana.getText().toString());
}
else{
if(myTextView.getText().toString().contains("香蕉")){
myTextView.setText(myTextView.getText().toString().replace("香蕉", ""));
}
}
}
});
myWaterMelon.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked){
myTextView.append(myWaterMelon.getText().toString());
}
else{
if(myTextView.getText().toString().contains("西瓜")){
myTextView.setText(myTextView.getText().toString().replace("西瓜", ""));
}
}
}
});
myStrawBerry.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked){
myTextView.append(myStrawBerry.getText().toString());
}
else{
if(myTextView.getText().toString().contains("草莓")){
myTextView.setText(myTextView.getText().toString().replace("草莓", ""));
}
}
}
});
}
}
main.xml文件内容为：
<?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/myTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="请选择你一下你喜欢吃的水果："
/>
<CheckBox
android:id="@+id/Apple"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="苹果"
/>
<CheckBox
android:id="@+id/Orange"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="橘子"
/>
<CheckBox
android:id="@+id/banana"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="香蕉"
/>
<CheckBox
android:id="@+id/watermelon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="西瓜"
/>
<CheckBox
android:id="@+id/strawberry"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="草莓"
/>
</LinearLayout>
运行结果为:
希望本文所述对大家Android程序设计有所帮助。
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