Clearing the selection for RadioGroup : RadioGroup « UI « Android
Clearing the selection for RadioGroup
/* * 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 <?xml version="1.0" encoding="utf-8"?> <!-- 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. --> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <RadioGroup android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:checkedButton="@+id/lunch" android:id="@+id/menu"> <RadioButton android:text="@string/radio_group_1_breakfast" android:id="@+id/breakfast" /> <RadioButton android:text="@string/radio_group_1_lunch" android:id="@id/lunch" /> <RadioButton android:text="@string/radio_group_1_dinner" android:id="@+id/dinner" /> <RadioButton android:text="@string/radio_group_1_all" android:id="@+id/all" /> <TextView android:text="@string/radio_group_1_selection" android:id="@+id/choice" /> </RadioGroup> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/radio_group_1_clear" android:id="@+id/clear" /> </LinearLayout>
Related examples in the same category
java2s.com | © Demo Source and Support. All rights reserved.