Add Gradle build config to PluginQR and update it to match new source conventions.

Version code is bumped because there was a minor code change to avoid a
fatal lint error complaining about a memory leak.

Fixes #489.

src/build-scripts/build-java.bat

@@ -7,4 +7,7 @@ call gradlew assemble
 cd ..\Keepass2AndroidPluginSDK2
 call gradlew assemble
 
-cd ..\..\build-scripts
+cd ..\PluginQR
+call gradlew assemble
+
+cd ..\..\build-scripts

src/build-scripts/build-java.sh

@@ -15,4 +15,8 @@ pushd Keepass2AndroidPluginSDK2
 ./gradlew assemble
 popd
 
+pushd PluginQR
+./gradlew assemble
+popd
+
 popd

src/java/PluginQR/.gitignore

@@ -0,0 +1 @@
+/build

src/java/PluginQR/app/.gitignore

@@ -0,0 +1 @@
+/build

src/java/PluginQR/app/build.gradle

@@ -0,0 +1,37 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 26
+    buildToolsVersion '26.0.2'
+
+    defaultConfig {
+        applicationId "keepass2android.plugin.qr"
+        minSdkVersion 14
+        targetSdkVersion 19
+        versionCode 3
+        versionName "1.0.2"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
+        }
+    }
+
+
+    compileOptions {
+        sourceCompatibility 1.8
+        targetCompatibility 1.8
+    }
+
+    lintOptions {
+        disable 'ExtraTranslation'
+        disable 'MissingTranslation'
+    }
+}
+
+dependencies {
+    compile project(':Keepass2AndroidPluginSDK2')
+    compile 'com.google.zxing:core:2.3.0'
+}

src/java/PluginQR/app/src/main/AndroidManifest.xml

@@ -1,8 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="keepass2android.plugin.qr"
+    package="keepass2android.plugin.qr" >
-    android:versionCode="2"
-    android:versionName="1.0.1" >
     
     <uses-permission android:name="android.permission.CAMERA"/>
      <uses-permission
@@ -15,10 +13,6 @@
 	<uses-feature android:name="android.hardware.camera.flash" android:required="false"/>
 	<uses-feature android:name="android.hardware.screen.portrait" android:required="false"/>
 
-    <uses-sdk
-        android:minSdkVersion="14"
-        android:targetSdkVersion="19" />
-
     <application
         android:allowBackup="true"
         android:icon="@drawable/ic_launcher"

src/java/PluginQR/app/src/main/java/com/google/zxing/client/android/result/WifiResultHandler.java

@@ -61,7 +61,7 @@ public final class WifiResultHandler extends ResultHandler {
   public void handleButtonPress(int index) {
     if (index == 0) {
       WifiParsedResult wifiResult = (WifiParsedResult) getResult();
-      WifiManager wifiManager = (WifiManager) getActivity().getSystemService(Context.WIFI_SERVICE);
+      WifiManager wifiManager = (WifiManager) getActivity().getApplicationContext().getSystemService(Context.WIFI_SERVICE);
       if (wifiManager == null) {
         Log.w(TAG, "No WifiManager available from device");
         return;