1 page.title=Showing Confirmations 2 3 @jd:body 4 5 <div id="tb-wrapper"> 6 <div id="tb"> 7 <h2>This lesson teaches you to</h2> 8 <ol> 9 <li><a href="#confirmation-timers">Use Automatic Confirmation Timers</a></li> 10 <li><a href="#show-confirmation">Show Confirmation Animations</a></li> 11 </ol> 12 <h2>You should also read</h2> 13 <ul> 14 <li><a href="{@docRoot}design/wear/index.html">Android Wear Design Principles</a></li> 15 </ul> 16 </div> 17 </div> 18 19 20 <p><a href="{@docRoot}design/wear/patterns.html#Countdown">Confirmations</a> in Android Wear apps 21 use the whole screen or a larger portion of it than those in handheld apps. This ensures that 22 users can see these confirmations by just glancing at the screen and that they have large enough 23 touch targets to cancel an action.</p> 24 25 <p>The Wearable UI Library helps you show confirmation animations and timers in your 26 Android Wear apps:</p> 27 28 <dl> 29 <dt><em>Confirmation timers</em></dt> 30 <dd>Automatic confirmation timers show users an animated timer that lets them cancel an action 31 they just performed.</dd> 32 <dt><em>Confirmation animations</em></dt> 33 <dd>Confirmation animations give users visual feedback when they complete an action.</dd> 34 </dl> 35 36 <p>The following sections show you how to implement these patterns.</p> 37 38 39 <h2 id="confirmation-timers">Use Automatic Confirmation Timers</h2> 40 41 <div style="float:right;margin-left:25px;width:230px;margin-top:10px"> 42 <img src="{@docRoot}wear/images/09_uilib.png" width="230" height="230" alt=""/> 43 <p class="img-caption" style="text-align:center"><strong>Figure 1:</strong> 44 A confirmation timer.</p> 45 </div> 46 47 <p>Automatic confirmation timers let users cancel an action they just performed. When the user 48 performs the action, your app shows a button to cancel the action with a timer animation and 49 starts the timer. The user has the option to cancel the action until the timer finishes. Your app 50 gets notified if the user cancels the action and when the timer expires.</p> 51 52 <p>To show a confirmation timer when users complete an action in your app:</p> 53 54 <ol> 55 <li>Add a 56 <a href="{@docRoot}reference/android/support/wearable/view/DelayedConfirmationView.html"><code><DelayedConfirmationView></code></a> 57 element to your layout.</li> 58 <li>Implement the 59 <a href="{@docRoot}reference/android/support/wearable/view/DelayedConfirmationView.DelayedConfirmationListener.html"><code>DelayedConfirmationListener</code></a> 60 interface in your activity.</li> 61 <li>Set the duration of the timer and start it when the user completes an action.</li> 62 </ol> 63 64 <p>Add the 65 <a href="{@docRoot}reference/android/support/wearable/view/DelayedConfirmationView.html"><code><DelayedConfirmationView></code></a> 66 element to your layout as follows:</p> 67 68 <pre> 69 <android.support.wearable.view.DelayedConfirmationView 70 android:id="@+id/delayed_confirm" 71 android:layout_width="40dp" 72 android:layout_height="40dp" 73 android:src="@drawable/cancel_circle" 74 app:circle_border_color="@color/lightblue" 75 app:circle_border_width="4dp" 76 app:circle_radius="16dp"> 77 </android.support.wearable.view.DelayedConfirmationView> 78 </pre> 79 80 <p>You can assign a drawable resource to display inside the circle with the 81 <code>android:src</code> attribute and configure the parameters of the circle directly on the 82 layout definition.</p> 83 84 <p>To be notified when the timer finishes or when users tap on it, implement the corresponding 85 listener methods in your activity:</p> 86 87 <pre> 88 public class WearActivity extends Activity implements 89 DelayedConfirmationView.DelayedConfirmationListener { 90 91 private DelayedConfirmationView mDelayedView; 92 93 @Override 94 protected void onCreate(Bundle savedInstanceState) { 95 super.onCreate(savedInstanceState); 96 setContentView(R.layout.activity_wear_activity); 97 98 mDelayedView = 99 (DelayedConfirmationView) findViewById(R.id.delayed_confirm); 100 mDelayedView.setListener(this); 101 } 102 103 @Override 104 public void onTimerFinished(View view) { 105 // User didn't cancel, perform the action 106 } 107 108 @Override 109 public void onTimerSelected(View view) { 110 // User canceled, abort the action 111 } 112 } 113 </pre> 114 115 <p>To start the timer, add the following code to the point in your activity where users select 116 an action:</p> 117 118 <pre> 119 // Two seconds to cancel the action 120 mDelayedView.setTotalTimeMs(2000); 121 // Start the timer 122 mDelayedView.start(); 123 </pre> 124 125 <div style="float:right;margin-left:25px;width:210px;margin-top:15px"> 126 <img src="{@docRoot}wear/images/08_uilib.png" width="200" height="200" alt=""/> 127 <p class="img-caption" style="text-align:center;margin-left:-5px"><strong>Figure 2:</strong> 128 A confirmation animation.</p> 129 </div> 130 131 <h2 id="show-confirmation">Show Confirmation Animations</h2> 132 133 <p>To show a confirmation animation when users complete an action in your app, create an intent 134 that starts 135 <a href="{@docRoot}reference/android/support/wearable/activity/ConfirmationActivity.html"><code>ConfirmationActivity</code></a> 136 from one of your activities. You can specify 137 one of the these animations with the 138 <a href="{@docRoot}reference/android/support/wearable/activity/ConfirmationActivity.html#EXTRA_ANIMATION_TYPE"><code>EXTRA_ANIMATION_TYPE</code></a> 139 intent extra:</p> 140 141 <ul> 142 <li><a href="{@docRoot}reference/android/support/wearable/activity/ConfirmationActivity.html#SUCCESS_ANIMATION"><code>SUCCESS_ANIMATION</code></a></li> 143 <li><a href="{@docRoot}reference/android/support/wearable/activity/ConfirmationActivity.html#FAILURE_ANIMATION"><code>FAILURE_ANIMATION</code></a></li> 144 <li><a href="{@docRoot}reference/android/support/wearable/activity/ConfirmationActivity.html#OPEN_ON_PHONE_ANIMATION"><code>OPEN_ON_PHONE_ANIMATION</code></a></li> 145 </ul> 146 147 <p>You can also add a message that appears under the confirmation icon.</p> 148 149 <p>To use the 150 <a href="{@docRoot}reference/android/support/wearable/activity/ConfirmationActivity.html"><code>ConfirmationActivity</code></a> 151 in your app, first declare this activity in your manifest file:</p> 152 153 <pre> 154 <manifest> 155 <application> 156 ... 157 <activity 158 android:name="android.support.wearable.activity.ConfirmationActivity"> 159 </activity> 160 </application> 161 </manifest> 162 </pre> 163 164 <p>Then determine the result of the user action and start the activity with an intent:</p> 165 166 <pre> 167 Intent intent = new Intent(this, ConfirmationActivity.class); 168 intent.putExtra(ConfirmationActivity.EXTRA_ANIMATION_TYPE, 169 ConfirmationActivity.SUCCESS_ANIMATION); 170 intent.putExtra(ConfirmationActivity.EXTRA_MESSAGE, 171 getString(R.string.msg_sent)); 172 startActivity(intent); 173 </pre> 174 175 <p>After showing the confirmation animation, 176 <a href="{@docRoot}reference/android/support/wearable/activity/ConfirmationActivity.html"><code>ConfirmationActivity</code></a> 177 finishes and your activity resumes.</p> 178
