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 // Need the following import to get access to the app resources, since this 20 // class is in a sub-package. 21 import com.example.android.apis.R; 22 23 import android.app.Activity; 24 import android.os.Bundle; 25 import android.view.View; 26 import android.view.View.OnClickListener; 27 import android.widget.Button; 28 29 30 /** 31 * Demonstrates making a view VISIBLE, INVISIBLE and GONE 32 * 33 */ 34 public class Visibility1 extends Activity { 35 36 private View mVictim; 37 38 @Override 39 protected void onCreate(Bundle savedInstanceState) { 40 super.onCreate(savedInstanceState); 41 setContentView(R.layout.visibility_1); 42 43 // Find the view whose visibility will change 44 mVictim = findViewById(R.id.victim); 45 46 // Find our buttons 47 Button visibleButton = (Button) findViewById(R.id.vis); 48 Button invisibleButton = (Button) findViewById(R.id.invis); 49 Button goneButton = (Button) findViewById(R.id.gone); 50 51 // Wire each button to a click listener 52 visibleButton.setOnClickListener(mVisibleListener); 53 invisibleButton.setOnClickListener(mInvisibleListener); 54 goneButton.setOnClickListener(mGoneListener); 55 } 56 57 OnClickListener mVisibleListener = new OnClickListener() { 58 public void onClick(View v) { 59 mVictim.setVisibility(View.VISIBLE); 60 } 61 }; 62 63 OnClickListener mInvisibleListener = new OnClickListener() { 64 public void onClick(View v) { 65 mVictim.setVisibility(View.INVISIBLE); 66 } 67 }; 68 69 OnClickListener mGoneListener = new OnClickListener() { 70 public void onClick(View v) { 71 mVictim.setVisibility(View.GONE); 72 } 73 }; 74 } 75
