1page.title=Recording Videos Simply 2parent.title=Capturing Photos 3parent.link=index.html 4 5trainingnavtop=true 6previous.title=Recording Photos Simply 7previous.link=photobasics.html 8next.title=Controlling the Camera 9next.link=cameradirect.html 10 11@jd:body 12 13 14<div id="tb-wrapper"> 15 <div id="tb"> 16 17 <h2>This lesson teaches you to</h2> 18 <ol> 19 <li><a href="#TaskManifest">Request Camera Permission</a></li> 20 <li><a href="#TaskCaptureIntent">Record a Video with a Camera App</a> 21 <li><a href="#TaskVideoView">View the Video</a></li> 22 </ol> 23 24 <h2>You should also read</h2> 25 <ul> 26 <li><a href="{@docRoot}guide/topics/media/camera.html">Camera</a></li> 27 <li><a href="{@docRoot}guide/components/intents-filters.html">Intents and Intent 28 Filters</a></li> 29 </ul> 30 31 <h2>Try it out</h2> 32 33 <div class="download-box"> 34 <a href="http://developer.android.com/shareables/training/PhotoIntentActivity.zip" 35class="button">Download the sample</a> 36 <p class="filename">PhotoIntentActivity.zip</p> 37 </div> 38 </div> 39</div> 40 41 42<p>This lesson explains how to capture video using existing camera 43applications.</p> 44 45<p>Your application has a job to do, and integrating videos is only a small 46part of it. You want to take videos with minimal fuss, and not reinvent the 47camcorder. Happily, most Android-powered devices already have a camera application that 48records video. In this lesson, you make it do this for you.</p> 49 50 51 52<h2 id="TaskManifest">Request Camera Permission</h2> 53 54<p>To advertise that your application depends on having a camera, put a 55{@code <uses-feature>} tag in the manifest file:</p> 56 57<pre> 58<manifest ... > 59 <uses-feature android:name="android.hardware.camera" /> 60 ... 61</manifest ... > 62</pre> 63 64<p>If your application uses, but does not require a camera in order to function, add {@code 65android:required="false"} to the tag. In doing so, Google Play will allow devices without a 66camera to download your application. It's then your responsibility to check for the availability 67of the camera at runtime by calling {@link 68android.content.pm.PackageManager#hasSystemFeature hasSystemFeature(PackageManager.FEATURE_CAMERA)}. 69If a camera is not available, you should then disable your camera features.</p> 70 71 72<h2 id="TaskCaptureIntent">Record a Video with a Camera App</h2> 73 74<p>The Android way of delegating actions to other applications is to invoke 75an {@link android.content.Intent} that describes what you want done. This 76involves three pieces: the {@link android.content.Intent} itself, a call to start the external 77{@link android.app.Activity}, and some code to handle the video when focus returns 78to your activity.</p> 79 80<p>Here's a function that invokes an intent to capture video.</p> 81 82<pre> 83private void dispatchTakeVideoIntent() { 84 Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE); 85 startActivityForResult(takeVideoIntent, ACTION_TAKE_VIDEO); 86} 87</pre> 88 89 90<p>It's a good idea to make sure an app exists to handle your intent 91before invoking it. Here's a function that checks for apps that can handle your intent:</p> 92 93<pre> 94public static boolean isIntentAvailable(Context context, String action) { 95 final PackageManager packageManager = context.getPackageManager(); 96 final Intent intent = new Intent(action); 97 List<ResolveInfo> list = 98 packageManager.queryIntentActivities(intent, 99 PackageManager.MATCH_DEFAULT_ONLY); 100 return list.size() > 0; 101} 102</pre> 103 104 105<h2 id="TaskVideoView">View the Video</h2> 106 107<p>The Android Camera application returns the video in the {@link android.content.Intent} delivered 108to {@link android.app.Activity#onActivityResult onActivityResult()} as a {@link 109android.net.Uri} pointing to the video location in storage. The following code 110retrieves this video and displays it in a {@link android.widget.VideoView}.</p> 111 112<pre> 113private void handleCameraVideo(Intent intent) { 114 mVideoUri = intent.getData(); 115 mVideoView.setVideoURI(mVideoUri); 116} 117</pre> 118 119