/* * 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;// Need the following import to get access to the app resources, since this// class is in a sub-package.import com.example.android.apis.R;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;/** * Demonstrates making a view VISIBLE, INVISIBLE and GONE * */public class Visibility1 extends Activity {    private View mVictim;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.visibility_1);        // Find the view whose visibility will change        mVictim = findViewById(R.id.victim);        // Find our buttons        Button visibleButton = (Button) findViewById(R.id.vis);        Button invisibleButton = (Button) findViewById(R.id.invis);        Button goneButton = (Button) findViewById(R.id.gone);        // Wire each button to a click listener        visibleButton.setOnClickListener(mVisibleListener);        invisibleButton.setOnClickListener(mInvisibleListener);        goneButton.setOnClickListener(mGoneListener);    }    OnClickListener mVisibleListener = new OnClickListener() {        public void onClick(View v) {            mVictim.setVisibility(View.VISIBLE);        }    };    OnClickListener mInvisibleListener = new OnClickListener() {        public void onClick(View v) {            mVictim.setVisibility(View.INVISIBLE);        }    };    OnClickListener mGoneListener = new OnClickListener() {        public void onClick(View v) {            mVictim.setVisibility(View.GONE);        }    };}