1 /*
2  * Copyright (C) 2007 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.example.android.apis.view;
18 
19 import com.example.android.apis.R;
20 
21 import android.app.Activity;
22 import android.os.Bundle;
23 import android.view.View;
24 import android.widget.TextView;
25 import android.widget.RadioGroup;
26 import android.widget.Button;
27 import android.widget.RadioButton;
28 import android.widget.LinearLayout;
29 
30 
31 public class RadioGroup1 extends Activity implements RadioGroup.OnCheckedChangeListener,
32         View.OnClickListener {
33 
34     private TextView mChoice;
35     private RadioGroup mRadioGroup;
36 
37     @Override
onCreate(Bundle savedInstanceState)38     protected void onCreate(Bundle savedInstanceState) {
39         super.onCreate(savedInstanceState);
40 
41         setContentView(R.layout.radio_group_1);
42         mRadioGroup = (RadioGroup) findViewById(R.id.menu);
43 
44         // test adding a radio button programmatically
45         RadioButton newRadioButton = new RadioButton(this);
46         newRadioButton.setText(R.string.radio_group_snack);
47         newRadioButton.setId(R.id.snack);
48         LinearLayout.LayoutParams layoutParams = new RadioGroup.LayoutParams(
49                 RadioGroup.LayoutParams.WRAP_CONTENT,
50                 RadioGroup.LayoutParams.WRAP_CONTENT);
51         mRadioGroup.addView(newRadioButton, 0, layoutParams);
52 
53         // test listening to checked change events
54         String selection = getString(R.string.radio_group_selection);
55         mRadioGroup.setOnCheckedChangeListener(this);
56         mChoice = (TextView) findViewById(R.id.choice);
57         mChoice.setText(selection + mRadioGroup.getCheckedRadioButtonId());
58 
59         // test clearing the selection
60         Button clearButton = (Button) findViewById(R.id.clear);
61         clearButton.setOnClickListener(this);
62     }
63 
onCheckedChanged(RadioGroup group, int checkedId)64     public void onCheckedChanged(RadioGroup group, int checkedId) {
65         String selection = getString(R.string.radio_group_selection);
66         String none = getString(R.string.radio_group_none);
67         mChoice.setText(selection +
68                 (checkedId == View.NO_ID ? none : checkedId));
69     }
70 
onClick(View v)71     public void onClick(View v) {
72         mRadioGroup.clearCheck();
73     }
74 }
75