RadioGroup简单应用
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<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/title" /> <RadioGroup android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/radioGroup" > <RadioButton android:text="@string/red" android:id="@+id/radioButton_1" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <RadioButton android:text="@string/green" android:id="@+id/radioButton_2" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <RadioButton android:text="@string/blue" android:id="@+id/radioButton_3" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </RadioGroup> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="" android:id="@+id/textTip" /> </LinearLayout>
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public class RadioButtonActivity extends Activity { /** Called when the activity is first created. */private RadioGroup radioGroup;private RadioButton radioButton_1;private RadioButton radioButton_2;private RadioButton radioButton_3;private TextView textTip; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); radioGroup = (RadioGroup) findViewById(R.id.radioGroup); radioButton_1 = (RadioButton) findViewById(R.id.radioButton_1); radioButton_2 = (RadioButton) findViewById(R.id.radioButton_2); radioButton_3 = (RadioButton) findViewById(R.id.radioButton_3); textTip = (TextView) findViewById(R.id.textTip); radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {textTip.setText("选择ID："+checkedId);}}); }}?
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