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 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 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 71 public void onClick(View v) { 72 mRadioGroup.clearCheck(); 73 } 74 } 75
