The file containing the source code shown below is located in the corresponding directory in <sdk>/samples/android-<version>/...
/* * Copyright (C) 2007 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.Button; import com.example.android.apis.R; public class Focus3 extends Activity { private Button mTopButton; private Button mBottomButton; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.focus_3); mTopButton = (Button) findViewById(R.id.top); mBottomButton = (Button) findViewById(R.id.bottom); } public Button getTopButton() { return mTopButton; } public Button getBottomButton() { return mBottomButton; } }