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.os; 18 19 // Need the following import to get access to the app resources, since this 20 // class is in a sub-package. 21 22 import android.app.Activity; 23 import android.content.Context; 24 import android.os.Bundle; 25 import android.os.Vibrator; 26 import android.view.View; 27 import android.widget.TextView; 28 import com.example.android.apis.R; 29 30 /** 31 * <h3>App that vibrates the vibrator with the Morse Code for a string.</h3> 32 33 <p>This demonstrates the {@link android.os.Vibrator android.os.Vibrator} class. 34 35 <h4>Demo</h4> 36 OS / Morse Code Vibrator 37 38 <h4>Source files</h4> 39 * <table class="LinkTable"> 40 * <tr> 41 * <td >src/com.example.android.apis/os/MorseCode.java</td> 42 * <td >The Morse Code Vibrator</td> 43 * </tr> 44 * <tr> 45 * <td >res/any/layout/morse_code.xml</td> 46 * <td >Defines contents of the screen</td> 47 * </tr> 48 * </table> 49 */ 50 public class MorseCode extends Activity 51 { 52 /** Tag string for our debug logs */ 53 private static final String TAG = "MorseCode"; 54 55 /** Our text view */ 56 private TextView mTextView; 57 58 ; 59 60 /** 61 * Initialization of the Activity after it is first created. Must at least 62 * call {@link android.app.Activity#setContentView setContentView()} to 63 * describe what is to be displayed in the screen. 64 */ 65 @Override onCreate(Bundle savedInstanceState)66 protected void onCreate(Bundle savedInstanceState) 67 { 68 // Be sure to call the super class. 69 super.onCreate(savedInstanceState); 70 71 // See assets/res/any/layout/hello_world.xml for this 72 // view layout definition, which is being set here as 73 // the content of our screen. 74 setContentView(R.layout.morse_code); 75 76 // Set the OnClickListener for the button so we see when it's pressed. 77 findViewById(R.id.button).setOnClickListener(mClickListener); 78 79 // Save the text view so we don't have to look it up each time 80 mTextView = (TextView)findViewById(R.id.text); 81 } 82 83 /** Called when the button is pushed */ 84 View.OnClickListener mClickListener = new View.OnClickListener() { 85 public void onClick(View v) { 86 // Get the text out of the view 87 String text = mTextView.getText().toString(); 88 89 // convert it using the function defined above. See the docs for 90 // android.os.Vibrator for more info about the format of this array 91 long[] pattern = MorseCodeConverter.pattern(text); 92 93 // Start the vibration 94 Vibrator vibrator = (Vibrator)getSystemService(Context.VIBRATOR_SERVICE); 95 vibrator.vibrate(pattern, -1); 96 } 97 }; 98 } 99