Android实现单项、多项选择操作

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
 
 
  
 
  
   
   
   
   
  
 
  

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(); 
    } 
   } 
  }); 
 } 
} 

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
 

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); 
 } 
}