/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.apis.view;
import com.example.android.apis.R;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.RadioGroup;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.LinearLayout;
public class RadioGroup1 extends Activity implements RadioGroup.OnCheckedChangeListener,
View.OnClickListener {
private TextView mChoice;
private RadioGroup mRadioGroup;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.radio_group_1);
mRadioGroup = (RadioGroup) findViewById(R.id.menu);
// test adding a radio button programmatically
RadioButton newRadioButton = new RadioButton(this);
newRadioButton.setText(R.string.radio_group_snack);
newRadioButton.setId(R.id.snack);
LinearLayout.LayoutParams layoutParams = new RadioGroup.LayoutParams(
RadioGroup.LayoutParams.WRAP_CONTENT,
RadioGroup.LayoutParams.WRAP_CONTENT);
mRadioGroup.addView(newRadioButton, 0, layoutParams);
// test listening to checked change events
String selection = getString(R.string.radio_group_selection);
mRadioGroup.setOnCheckedChangeListener(this);
mChoice = (TextView) findViewById(R.id.choice);
mChoice.setText(selection + mRadioGroup.getCheckedRadioButtonId());
// test clearing the selection
Button clearButton = (Button) findViewById(R.id.clear);
clearButton.setOnClickListener(this);
}
public void onCheckedChanged(RadioGroup group, int checkedId) {
String selection = getString(R.string.radio_group_selection);
String none = getString(R.string.radio_group_none);
mChoice.setText(selection +
(checkedId == View.NO_ID ? none : checkedId));
}
public void onClick(View v) {
mRadioGroup.clearCheck();
}
}
//layout/radio_group_1.xml
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:checkedButton="@+id/lunch"
android:id="@+id/menu">
android:text="@string/radio_group_1_breakfast"
android:id="@+id/breakfast"
/>
android:text="@string/radio_group_1_lunch"
android:id="@id/lunch" />
android:text="@string/radio_group_1_dinner"
android:id="@+id/dinner" />
android:text="@string/radio_group_1_all"
android:id="@+id/all" />
android:text="@string/radio_group_1_selection"
android:id="@+id/choice" />
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/radio_group_1_clear"
android:id="@+id/clear" />