1 /* 2 * Copyright (C) 2011 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.musicplayer; 18 19 import android.app.Activity; 20 import android.app.AlertDialog; 21 import android.content.DialogInterface; 22 import android.content.Intent; 23 import android.net.Uri; 24 import android.os.Bundle; 25 import android.view.KeyEvent; 26 import android.view.View; 27 import android.view.View.OnClickListener; 28 import android.widget.Button; 29 import android.widget.EditText; 30 31 /** 32 * Main activity: shows media player buttons. This activity shows the media player buttons and 33 * lets the user click them. No media handling is done here -- everything is done by passing 34 * Intents to our {@link MusicService}. 35 * */ 36 public class MainActivity extends Activity implements OnClickListener { 37 /** 38 * The URL we suggest as default when adding by URL. This is just so that the user doesn't 39 * have to find an URL to test this sample. 40 */ 41 final String SUGGESTED_URL = "http://www.vorbis.com/music/Epoq-Lepidoptera.ogg"; 42 43 Button mPlayButton; 44 Button mPauseButton; 45 Button mSkipButton; 46 Button mRewindButton; 47 Button mStopButton; 48 Button mEjectButton; 49 50 /** 51 * Called when the activity is first created. Here, we simply set the event listeners and 52 * start the background service ({@link MusicService}) that will handle the actual media 53 * playback. 54 */ 55 @Override onCreate(Bundle savedInstanceState)56 public void onCreate(Bundle savedInstanceState) { 57 super.onCreate(savedInstanceState); 58 setContentView(R.layout.main); 59 60 mPlayButton = (Button) findViewById(R.id.playbutton); 61 mPauseButton = (Button) findViewById(R.id.pausebutton); 62 mSkipButton = (Button) findViewById(R.id.skipbutton); 63 mRewindButton = (Button) findViewById(R.id.rewindbutton); 64 mStopButton = (Button) findViewById(R.id.stopbutton); 65 mEjectButton = (Button) findViewById(R.id.ejectbutton); 66 67 mPlayButton.setOnClickListener(this); 68 mPauseButton.setOnClickListener(this); 69 mSkipButton.setOnClickListener(this); 70 mRewindButton.setOnClickListener(this); 71 mStopButton.setOnClickListener(this); 72 mEjectButton.setOnClickListener(this); 73 } 74 onClick(View target)75 public void onClick(View target) { 76 // Send the correct intent to the MusicService, according to the button that was clicked 77 if (target == mPlayButton) 78 startService(new Intent(MusicService.ACTION_PLAY)); 79 else if (target == mPauseButton) 80 startService(new Intent(MusicService.ACTION_PAUSE)); 81 else if (target == mSkipButton) 82 startService(new Intent(MusicService.ACTION_SKIP)); 83 else if (target == mRewindButton) 84 startService(new Intent(MusicService.ACTION_REWIND)); 85 else if (target == mStopButton) 86 startService(new Intent(MusicService.ACTION_STOP)); 87 else if (target == mEjectButton) { 88 showUrlDialog(); 89 } 90 } 91 92 /** 93 * Shows an alert dialog where the user can input a URL. After showing the dialog, if the user 94 * confirms, sends the appropriate intent to the {@link MusicService} to cause that URL to be 95 * played. 96 */ showUrlDialog()97 void showUrlDialog() { 98 AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this); 99 alertBuilder.setTitle("Manual Input"); 100 alertBuilder.setMessage("Enter a URL (must be http://)"); 101 final EditText input = new EditText(this); 102 alertBuilder.setView(input); 103 104 input.setText(SUGGESTED_URL); 105 106 alertBuilder.setPositiveButton("Play!", new DialogInterface.OnClickListener() { 107 public void onClick(DialogInterface dlg, int whichButton) { 108 // Send an intent with the URL of the song to play. This is expected by 109 // MusicService. 110 Intent i = new Intent(MusicService.ACTION_URL); 111 Uri uri = Uri.parse(input.getText().toString()); 112 i.setData(uri); 113 startService(i); 114 } 115 }); 116 alertBuilder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 117 public void onClick(DialogInterface dlg, int whichButton) {} 118 }); 119 120 alertBuilder.show(); 121 } 122 123 @Override onKeyDown(int keyCode, KeyEvent event)124 public boolean onKeyDown(int keyCode, KeyEvent event) { 125 switch (keyCode) { 126 case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE: 127 case KeyEvent.KEYCODE_HEADSETHOOK: 128 startService(new Intent(MusicService.ACTION_TOGGLE_PLAYBACK)); 129 return true; 130 } 131 return super.onKeyDown(keyCode, event); 132 } 133 } 134