有想過友Android的小屏幕上把asp.net 的RadionButtonList搬進來用嗎？答案是肯定的，Android 的Tool工具提供了一個RadioGroup控件，可將各大自不同的RadioButton設限于同一個Radio按鈕組，這樣子就可以做到單選的效果了，那要怎么樣用呢？先看截圖：
我們要做的事是：當用戶猜題或者選擇一個特定某個選項時，我們將在後臺判斷用戶是否選中，如果選中者相應的做出處理，具體處理看各自項目的需求，代碼片段一：
代码 mButton.setOnClickListener( new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub if (mRadioButton1.isChecked()) { mRadioButton1.setChecked( false ); } if (mRadioButton2.isChecked()) { mRadioButton2.setChecked( false ); } if (mRadioButton3.isChecked()) { mRadioButton3.setChecked( false ); } if (mRadioButton4.isChecked()) { mRadioButton4.setChecked( false ); } } });
按鈕事件，重置選中按鈕為未選中狀態。
代碼片段二：
代码 list = new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub RadioButton btn = (RadioButton)findViewById(checkedId); if (btn.isChecked()) { switch (checkedId) { case R.id.RadioButton01: Show( " 回答錯誤！ " ); break ; case R.id.RadioButton02: Show( " 回答錯誤！ " ); break ; case R.id.RadioButton03: Show( " 回答正確,獎勵你100分 " ); break ; case R.id.RadioButton04: Show( " 回答錯誤！ " ); break ; } } } }; mGroup.setOnCheckedChangeListener(list); }
步驟分析：一，通過checkid判斷用戶選中哪一個按鈕再判斷，如果狀態為ischeck()則做出相應處理
二，通過checkid做出彈出處理效果
完整代碼如下：
代码 package cn.terry; import android.app.Activity; import android.app.AlertDialog; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget. * ; import android.widget.RadioGroup.OnCheckedChangeListener; public class TestRadioButton extends Activity { private RadioGroup mGroup; private Button mButton; private RadioButton mRadioButton1; private RadioButton mRadioButton2; private RadioButton mRadioButton3; private RadioButton mRadioButton4; private OnCheckedChangeListener list; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.main); mGroup = (RadioGroup)findViewById(R.id.group); mButton = (Button)findViewById(R.id.Button1); mRadioButton1 = (RadioButton)findViewById(R.id.RadioButton01); mRadioButton2 = (RadioButton)findViewById(R.id.RadioButton02); mRadioButton3 = (RadioButton)findViewById(R.id.RadioButton03); mRadioButton4 = (RadioButton)findViewById(R.id.RadioButton04); mButton.setOnClickListener( new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub if (mRadioButton1.isChecked()) { mRadioButton1.setChecked( false ); } if (mRadioButton2.isChecked()) { mRadioButton2.setChecked( false ); } if (mRadioButton3.isChecked()) { mRadioButton3.setChecked( false ); } if (mRadioButton4.isChecked()) { mRadioButton4.setChecked( false ); } } }); list = new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub RadioButton btn = (RadioButton)findViewById(checkedId); if (btn.isChecked()) { switch (checkedId) { case R.id.RadioButton01: Show( " 回答錯誤！ " ); break ; case R.id.RadioButton02: Show( " 回答錯誤！ " ); break ; case R.id.RadioButton03: Show( " 回答正確,獎勵你100分 " ); break ; case R.id.RadioButton04: Show( " 回答錯誤！ " ); break ; } } } }; mGroup.setOnCheckedChangeListener(list); } public void Show(String msg) { new AlertDialog.Builder(TestRadioButton. this ) .setTitle( " 提示 " ) .setMessage(msg) .setPositiveButton( " 確定 " , null ).create().show(); } }
源碼下載：/Files/TerryBlog/TestRadioButton.rar
如果你有什麽不懂的可以：QQ285735942 或 Email:terryyhl@gmail.com 希望能幫得到您。
转载于:https://www.cnblogs.com/TerryBlog/archive/2010/05/28/1746281.html
