Android vision samples updates.

These are the initial samples for the Android Vision API.

Author: claywilkinson

face/FaceTracker/app/build.gradle

@@ -6,7 +6,7 @@ android {
 
     defaultConfig {
         applicationId "com.google.android.gms.samples.vision.face.facetracker"
-        minSdkVersion 19
+        minSdkVersion 9
         targetSdkVersion 22
         versionCode 1
         versionName "1.0"

face/FaceTracker/app/src/main/AndroidManifest.xml

@@ -10,7 +10,7 @@
     <uses-permission android:name="android.permission.CAMERA" />
 
     <uses-sdk
-        android:minSdkVersion="11"
+        android:minSdkVersion="9"
         android:targetSdkVersion="21" />
 
     <application

face/FaceTracker/app/src/main/java/com/google/android/gms/samples/vision/face/facetracker/FaceTrackerActivity.java

@@ -78,7 +78,6 @@ public void onCreate(Bundle icicle) {
                 .setFacing(CameraSource.CAMERA_FACING_BACK)
                 .setRequestedFps(30.0f)
                 .build();
-        startCameraSource();
     }
 
     /**

face/FaceTracker/app/src/main/res/drawable-xhdpi/icon.png

@@ -20,13 +20,14 @@
 import android.os.Bundle;
 import android.util.Log;
 
+import com.google.android.gms.samples.vision.face.multitracker.ui.camera.CameraSourcePreview;
+import com.google.android.gms.samples.vision.face.multitracker.ui.camera.GraphicOverlay;
+
 import com.google.android.gms.vision.CameraSource;
 import com.google.android.gms.vision.MultiDetector;
 import com.google.android.gms.vision.MultiProcessor;
 import com.google.android.gms.vision.barcode.BarcodeDetector;
 import com.google.android.gms.vision.face.FaceDetector;
-import com.google.android.gms.samples.vision.face.multitracker.ui.camera.CameraSourcePreview;
-import com.google.android.gms.samples.vision.face.multitracker.ui.camera.GraphicOverlay;
 
 import java.io.IOException;
 
@@ -95,14 +96,14 @@ public void onCreate(Bundle icicle) {
             Log.w(TAG, "Detector dependencies are not yet available.");
         }
 
-        // Creates and starts the camera.  Note that this will use a higher resolution by default
-        // (1024x768) in comparison to other face detection examples, because the barcode detector
-        // works better at higher resolutions.
+        // Creates and starts the camera.  Note that this uses a higher resolution in comparison
+        // to other detection examples to enable the barcode detector to detect small barcodes
+        // at long distances.
         mCameraSource = new CameraSource.Builder(context, multiDetector)
                 .setFacing(CameraSource.CAMERA_FACING_BACK)
+                .setRequestedPreviewSize(1600, 1024)
                 .setRequestedFps(15.0f)
                 .build();
-        startCameraSource();
     }
 
     /**

face/multi-tracker/app/src/main/java/com/google/android/gms/samples/vision/face/multitracker/MultiTrackerActivity.java

@@ -6,7 +6,7 @@ android {
 
     defaultConfig {
         applicationId "com.google.android.gms.samples.vision.face.photo"
-        minSdkVersion 19
+        minSdkVersion 9
         targetSdkVersion 22
         versionCode 1
         versionName "1.0"

face/multi-tracker/app/src/main/res/drawable-xhdpi/icon.png

@@ -6,7 +6,7 @@
     android:versionName="1" >
 
     <uses-sdk
-        android:minSdkVersion="11"
+        android:minSdkVersion="9"
         android:targetSdkVersion="21" />
 
     <application