android 单选（RadioGroup ）复选（CheckBox）按钮的应用

16lz 2021-01-23

第一步，还是创建android项目。

第二步，修改已经生成的res/layout/main.xml

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<?xml version="1.0" encoding="utf-8"?>
"http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
android:id="@+id/checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="复选框1" />
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="复选框2" />
android:id="@+id/radioGroup"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
"@+id/radion1"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="北京" />
"@+id/radion2"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="天津" />
"@+id/radion3"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="上海" />
"@+id/radion4"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="重庆" />

第三步，添加主要代码

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import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.CompoundButton.OnCheckedChangeListener;
public class checkBox extends Activity implements OnCheckedChangeListener {
/** Called when the activity is first created. */
RadioButton r1 = null;
RadioButton r2 = null;
RadioButton r3 = null;
RadioButton r4 = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
CheckBox checkBox = (CheckBox) findViewById(R.id.checkBox);
CheckBox checkBox1 = (CheckBox) findViewById(R.id.checkBox1);
//获得单选按钮组
RadioGroup radioGroup = (RadioGroup)findViewById(R.id.radioGroup);
//获得单选按钮
r1 = (RadioButton )findViewById(R.id.radion1);
r2 = (RadioButton )findViewById(R.id.radion2);
r3 = (RadioButton )findViewById(R.id.radion3);
r4 = (RadioButton )findViewById(R.id.radion4);
checkBox.setChecked(true);
r1.setClickable(true);
//监听多选按钮
checkBox.setOnCheckedChangeListener(this);
checkBox1.setOnCheckedChangeListener(this);
//监听单选按钮
radioGroup.setOnCheckedChangeListener(mChangeRadio);
}
//参考
http://blog.csdn.net/applezhengxd/archive/2010/05/06/5563512.aspx

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