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      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     /** Our text view */
     53     private TextView mTextView;
     54 
     55     /**
     56      * Initialization of the Activity after it is first created.  Must at least
     57      * call {@link android.app.Activity#setContentView setContentView()} to
     58      * describe what is to be displayed in the screen.
     59      */
     60     @Override
     61 	protected void onCreate(Bundle savedInstanceState)
     62     {
     63         // Be sure to call the super class.
     64         super.onCreate(savedInstanceState);
     65 
     66         // See assets/res/any/layout/hello_world.xml for this
     67         // view layout definition, which is being set here as
     68         // the content of our screen.
     69         setContentView(R.layout.morse_code);
     70 
     71         // Set the OnClickListener for the button so we see when it's pressed.
     72         findViewById(R.id.button).setOnClickListener(mClickListener);
     73 
     74         // Save the text view so we don't have to look it up each time
     75         mTextView = (TextView)findViewById(R.id.text);
     76     }
     77 
     78     /** Called when the button is pushed */
     79     View.OnClickListener mClickListener = new View.OnClickListener() {
     80         public void onClick(View v) {
     81             // Get the text out of the view
     82             String text = mTextView.getText().toString();
     83 
     84             // convert it using the function defined above.  See the docs for
     85             // android.os.Vibrator for more info about the format of this array
     86             long[] pattern = MorseCodeConverter.pattern(text);
     87 
     88             // Start the vibration
     89             Vibrator vibrator = (Vibrator)getSystemService(Context.VIBRATOR_SERVICE);
     90             vibrator.vibrate(pattern, -1);
     91         }
     92     };
     93 }
     94