一:RadioButton的相关属性:
1.Activity
//单选按钮 public class RadioButtonActivity extends Activity { private Context context; private RadioGroup sexRadioGroup; private RadioButton maleRadioButton; private RadioButton femaleRadioButton; private RadioButton sexRadioButton; private Button submitButton; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.radio_button); init(); addAction(); } private void init() { context = this; sexRadioGroup = (RadioGroup) findViewById(R.id.sexRadioGroupId); maleRadioButton = (RadioButton) findViewById(R.id.maleRadioButtonId); femaleRadioButton = (RadioButton) findViewById(R.id.femaleRadioButtonId); sexRadioButton = (RadioButton) findViewById(R.id.sexRadioButtonId); submitButton = (Button) findViewById(R.id.submitButtonId); } private void addAction() { // sexRadioGroup.setOnClickListener(l),setOnClickListener:点击的时候触发 // setOnCheckedChangeListener:状态改变的时候触发 // 两者都能实现对CheckBox的状态改变的监听,但一般情况下,用的更多的是setOnCheckedChangeListener。 //因为,当CheckBox的状态不是通过点击事件改变,而是通过其他的方式改变时,比如setCheck(),setOnClickListener无法完成此种情况下的监听。 //OnCheckChangedListener监听CheckBox的状态,无论来自你的onClick事件还是其他。 sexRadioGroup .setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { public void onCheckedChanged(RadioGroup group, int checkedId) { switch (checkedId) { case R.id.maleRadioButtonId: Toast.makeText(context, "你选择了"男".", Toast.LENGTH_SHORT).show(); break; case R.id.femaleRadioButtonId: Toast.makeText(context, "你选择了"女".", Toast.LENGTH_SHORT).show(); break; case R.id.sexRadioButtonId: Toast.makeText(context, "你选择了"人妖".", Toast.LENGTH_SHORT).show(); break; default: break; } } }); submitButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { String sex = null; if (maleRadioButton.isChecked()) { sex = "男"; } if (femaleRadioButton.isChecked()) { sex = "女"; } if (sexRadioButton.isChecked()) { sex = "人妖"; } Toast.makeText(context, "你的性别是:" + sex, Toast.LENGTH_SHORT) .show(); } }); } }
2.xml文件:
<?xml version="1.0" encoding="utf-8"?> <!-- 单选按钮页面 --> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:padding="5dp" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="性别:" android:textSize="20sp" /> <RadioGroup android:id="@+id/sexRadioGroupId" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <!-- android:button="@null" 可以自定义图片--> <RadioButton android:id="@+id/maleRadioButtonId" android:layout_width="wrap_content" android:layout_height="wrap_content" android:checked="true" android:text="男" /> <RadioButton android:id="@+id/femaleRadioButtonId" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="女" /> <RadioButton android:id="@+id/sexRadioButtonId" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="人妖" /> </RadioGroup> </LinearLayout> <Button android:id="@+id/submitButtonId" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="right" android:text="确定" android:textSize="20sp" /> </LinearLayout>
3.效果图展示: