Remove vendored gesture detector and replace with composite build and add to README.

Also fixes a few .gitignores to exclude ide and build outputs.

Change-Id: I7c9bd26db8d2dbd78a6276aeae1e9595aad9b099

Author: jbolinger

Camera2Sample/.gitignore

@@ -4,6 +4,7 @@
 .idea
 .project
 .settings
+.classpath
 .DS_Store
 /bin
 /build

GestureLibrarySample/.gitignore

@@ -4,10 +4,12 @@
 .idea
 .project
 .settings
+.classpath
 .DS_Store
 /bin
 /main/bin
 /build
+/main/build
 /captures
 /out
 .externalNativeBuild

QRCodeScannerSample/app/build.gradle

@@ -17,11 +17,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 28
     defaultConfig {
         applicationId "com.example.glass.glassqrcodescanner"
         minSdkVersion 27
-        targetSdkVersion 29
+        targetSdkVersion 28
         versionCode 1
         versionName "1.0"
     }
@@ -37,6 +37,8 @@ android {
 }
 
 dependencies {
+    implementation 'com.example.glass.ui:gesture-lib-sample:0.1.0-SNAPSHOT'
+
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.camera:camera-core:1.0.0-alpha06'
     implementation 'androidx.camera:camera-camera2:1.0.0-alpha06'

QRCodeScannerSample/app/src/main/java/com/example/glass/qrcodescannersample/BaseActivity.java

@@ -21,7 +21,9 @@
 import android.view.View;
 import androidx.annotation.Nullable;
 import androidx.fragment.app.FragmentActivity;
-import com.example.glass.qrcodescannersample.GlassGestureDetector.OnGestureListener;
+
+import com.example.glass.ui.GlassGestureDetector;
+import com.example.glass.ui.GlassGestureDetector.OnGestureListener;
 
 /**
  * Base Activity class used to hide the system UI and capture gestures.

QRCodeScannerSample/app/src/main/java/com/example/glass/qrcodescannersample/CameraActivity.java

@@ -27,8 +27,10 @@
 import androidx.annotation.NonNull;
 import androidx.camera.core.CameraX;
 import androidx.core.content.ContextCompat;
-import com.example.glass.qrcodescannersample.GlassGestureDetector.Gesture;
+
 import com.example.glass.qrcodescannersample.QRCodeImageAnalysis.QrCodeAnalysisCallback;
+import com.example.glass.ui.GlassGestureDetector.Gesture;
+
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 

QRCodeScannerSample/app/src/main/java/com/example/glass/qrcodescannersample/GlassGestureDetector.java

@@ -22,7 +22,8 @@
 import android.view.View;
 import android.widget.TextView;
 import androidx.annotation.Nullable;
-import com.example.glass.qrcodescannersample.GlassGestureDetector.Gesture;
+
+import com.example.glass.ui.GlassGestureDetector.Gesture;
 
 /**
  * This activity scans a QR code and shows the result.

QRCodeScannerSample/app/src/main/java/com/example/glass/qrcodescannersample/MainActivity.java

@@ -14,4 +14,10 @@
  * limitations under the License.
  */
 
-include ':app'
+include ':app'
+
+includeBuild('../GestureLibrarySample') {
+    dependencySubstitution {
+        substitute module('com.example.glass.ui:gesture-lib-sample') with project(':main')
+    }
+}

QRCodeScannerSample/settings.gradle

@@ -16,6 +16,7 @@ Then use [Android Studio](https://developer.android.com/studio) to build & run t
 
 *  [Card Sample](CardSample): A simple Glass application showcasing typical layouts and UI patterns.
 *  [Camera2 Sample](Camera2Sample): Take photos and videos using the [Camera2 API](https://developer.android.com/guide/topics/media/camera).
+*  [QR Code Sample](QRCodeScannerSample): Scan QR codes with the camera.
 *  [Gesture Detector](endpoints-frameworks): Respond to gesture events on the touchpad.
 
 ## Contributing