The file containing the source code shown below is located in the corresponding directory in <sdk>/samples/android-<version>/...
/* * Copyright (C) 2010 The Android开源工程 * * 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 android.app.Activity; import android.os.Bundle; import android.widget.CompoundButton; import android.widget.Switch; import android.widget.Toast; import com.example.android.apis.R; /** * Demonstrates the use of the toggle switch widget. */ public class Switches extends Activity implements CompoundButton.OnCheckedChangeListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.switches); Switch s = (Switch) findViewById(R.id.monitored_switch); if (s != null) { s.setOnCheckedChangeListener(this); } } @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { Toast.makeText(this, "Monitored switch is " + (isChecked ? "on" : "off"), Toast.LENGTH_SHORT).show(); } }