Android实现单项、多项选择操作

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 xmlns:tools="http://schemas.android.com/tools" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:orientation="vertical" 
 tools:context="com.rj141.sb.kongjian.DateActivity"> 
 
 
 <TextView 
  android:layout_marginLeft="10dp" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:text="2+3=" 
  android:textSize="22dp" 
  /> 
 
 <RadioGroup 
  android:layout_marginLeft="20dp" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content"> 
  <RadioButton 
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content" 
   android:text="A.2" 
   android:id="@+id/rb1" 
   /> 
  <RadioButton 
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content" 
   android:text="B.3" 
   android:id="@+id/rb2" 
   /> 
  <RadioButton 
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content" 
   android:text="C.4" 
   android:id="@+id/rb3" 
   /> 
  <RadioButton 
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content" 
   android:text="D.5" 
   android:id="@+id/rb4" 
   /> 
 </RadioGroup> 
 
 <Button 
  android:id="@+id/submit" 
  android:layout_width="match_parent" 
  android:layout_height="wrap_content" 
  android:text="提交"/> 
</LinearLayout>

public class SingChoose extends AppCompatActivity { 
 private Button btn; 
 private RadioButton rbD; 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.sing_choose); 
 
  rbD= (RadioButton) this.findViewById(R.id.rb4); 
  btn= (Button) this.findViewById(R.id.submit); 
  btn.setOnClickListener(new View.OnClickListener() { 
   @Override 
   public void onClick(View v) { 
    if(rbD.isChecked()){ 
     Toast.makeText(SingChoose.this,"正确，请加五分",Toast.LENGTH_SHORT).show(); 
    } 
    else { 
     Toast.makeText(SingChoose.this,"错误，请减五分",Toast.LENGTH_SHORT).show(); 
    } 
   } 
  }); 
 } 
} 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 xmlns:tools="http://schemas.android.com/tools" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:orientation="vertical" 
 tools:context="com.rj141.sb.kongjian.CheckChoose"> 
 
 <TextView 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:textSize="20dp" 
  android:text="你喜欢下列哪些物品？" 
  /> 
 
 <CheckBox 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:text="巧克力" 
  android:id="@+id/cb1" /> 
 
 <CheckBox 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:text="冰淇淋" 
  android:id="@+id/cb2" /> 
 
 <CheckBox 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:text="蛋糕" 
  android:id="@+id/cb3" /> 
 
 <CheckBox 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:text="啤酒" 
  android:id="@+id/cb4" /> 
 
 <CheckBox 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:text="肉" 
  android:id="@+id/cb5" /> 
 
 <TextView 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:textSize="18dp" 
  android:id="@+id/tv" /> 
 
</LinearLayout> 

public class CheckChoose extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener { 
 
 private CheckBox cb1,cb2,cb3,cb4,cb5; 
 private TextView tv; 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.check_choose); 
 
  tv= (TextView) this.findViewById(R.id.tv); 
  cb1= (CheckBox) this.findViewById(R.id.cb1); 
  cb2= (CheckBox) this.findViewById(R.id.cb2); 
  cb3= (CheckBox) this.findViewById(R.id.cb3); 
  cb4= (CheckBox) this.findViewById(R.id.cb4); 
  cb5= (CheckBox) this.findViewById(R.id.cb5); 
  cb1.setOnCheckedChangeListener(this); 
  cb2.setOnCheckedChangeListener(this); 
  cb3.setOnCheckedChangeListener(this); 
  cb4.setOnCheckedChangeListener(this); 
  cb5.setOnCheckedChangeListener(this); 
 } 
 
 @Override 
 public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
  String str="您喜欢："; 
  if(cb1.isChecked()){ 
   str+=cb1.getText()+","; 
  } 
  if(cb2.isChecked()){ 
   str+=cb2.getText()+","; 
  } 
  if(cb3.isChecked()){ 
   str+=cb3.getText()+","; 
  } 
  if(cb4.isChecked()){ 
   str+=cb4.getText()+","; 
  } 
  if(cb5.isChecked()){ 
   str+=cb5.getText()+","; 
  } 
  tv.setText(str); 
 } 
}