在 Wear OS 中创建您的第一个功能块

使用集合让一切井井有条 根据您的偏好保存内容并对其进行分类。

git clone https://github.com/android/codelab-wear-tiles.git
cd codelab-wear-tiles

<service
    android:name="com.example.wear.tiles.hello.HelloWorldTileService"
    android:icon="@drawable/ic_waving_hand_24"
    android:label="@string/hello_tile_label"
    android:description="@string/hello_tile_description"
    android:exported="true"
    android:permission="com.google.android.wearable.permission.BIND_TILE_PROVIDER">
    
    <intent-filter>
        <action android:name="androidx.wear.tiles.action.BIND_TILE_PROVIDER" />
    </intent-filter>

    <!-- The tile preview shown when configuring tiles on your phone -->
    <meta-data
        android:name="androidx.wear.tiles.PREVIEW"
        android:resource="@drawable/tile_hello" />
</service>

fun tileLayout(
    context: Context,
    deviceConfiguration: DeviceParametersBuilders.DeviceParameters,
    message: String,
) =
    materialScope(
        context = context,
        deviceConfiguration = deviceConfiguration,
        allowDynamicTheme = false,
    ) {
        primaryLayout(mainSlot = { text(message.layoutString) })
    }

@Preview(device = WearDevices.SMALL_ROUND, name = "Small Round")
@Preview(device = WearDevices.LARGE_ROUND, name = "Large Round")
internal fun helloLayoutPreview(context: Context): TilePreviewData {
    return TilePreviewData {
        TilePreviewHelper.singleTimelineEntryTileBuilder(
            helloLayout(context, it.deviceConfiguration, "Hello, preview tile!")
        )
            .build()
    }
}

implementation "androidx.wear.protolayout:protolayout-material3:$protoLayoutVersion"

primaryLayout(
    mainSlot = {
        // This layout code assumes "contacts" contains at least 4 elements, for sample code
        // that can handle an arbitrary number of contacts, and also shows different numbers
        // of contacts based on the physical screen size, see
        // <https://github.com/android/wear-os-samples/tree/main/WearTilesKotlin>.
        Column.Builder()
            .apply {
                setWidth(expand())
                setHeight(expand())
                addContent(
                    buttonGroup {
                        buttonGroupItem { contactButton(contacts[0]) }
                        buttonGroupItem { contactButton(contacts[1]) }
                    }
                )
                addContent(DEFAULT_SPACER_BETWEEN_BUTTON_GROUPS)
                addContent(
                    buttonGroup {
                        buttonGroupItem { contactButton(contacts[2]) }
                        buttonGroupItem { contactButton(contacts[3]) }
                    }
                )
            }
            .build()
    },
    bottomSlot = {
        textEdgeButton(
            onClick = clickable(), // TODO: Launch new conversation activity
            labelContent = { text("New".layoutString) },
        )
    },
)

// Additional named argument to TilePreviewData
onTileResourceRequest = { resourcesRequest ->
    Resources.Builder()
        .setVersion(resourcesRequest.version)
        .apply {
            contacts.forEach {
                if (it.avatarSource is AvatarSource.Resource) {
                    addIdToImageMapping(
                        it.imageResourceId(),
                        it.avatarSource.resourceId
                    )
                }
            }
        }
        .build()
}

override suspend fun resourcesRequest(
    requestParams: ResourcesRequest
): Resources {
    // resourceIds is a list of the ids we need to provide images for. If we're passed an empty
    // list, set resourceIds to all resources.
    val resourceIds =
        requestParams.resourceIds.ifEmpty {
            contacts.map { it.imageResourceId() }
        }

    // resourceMap maps (tile) resource ids to (Android) resource ids.
    val resourceMap =
        contacts
            .mapNotNull {
                when (it.avatarSource) {
                    is AvatarSource.Resource ->
                        it.imageResourceId() to
                            it.avatarSource.resourceId
                    else -> null
                }
            }
            .toMap()
            .filterKeys {
                it in resourceIds
            } // filter to only the resources we need

    // Add images in the resourceMap to the Resources object, and return the result.
    return Resources.Builder()
        .setVersion(requestParams.version)
        .apply {
            resourceMap.forEach { (id, imageResource) ->
                addIdToImageMapping(id, imageResource)
            }
        }
        .build()
}

clickable(
    id = "new_button",
    action =
        launchAction(
            ComponentName(
                "com.example.wear.tiles",
                "com.example.wear.tiles.messaging.MainActivity",
            ),
            mapOf(
                MainActivity.EXTRA_JOURNEY to
                    ActionBuilders.stringExtra(
                        MainActivity.EXTRA_JOURNEY_NEW
                    )
            ),
        ),
)

clickable(
    id = contact.id.toString(),
    action =
        launchAction(
            ComponentName(
                "com.example.wear.tiles",
                "com.example.wear.tiles.messaging.MainActivity",
            ),
            mapOf(
                MainActivity.EXTRA_JOURNEY to
                    ActionBuilders.stringExtra(
                        MainActivity
                            .EXTRA_JOURNEY_CONVERSATION
                    ),
                MainActivity.EXTRA_CONVERSATION_CONTACT to
                    ActionBuilders.stringExtra(
                        contact.name
                    ),
            ),
        ),
)