Auto-update

Application/build.gradle

@@ -1,11 +1,14 @@
 
 buildscript {
     repositories {
+        maven {
+            url 'https://maven.google.com'
+        }
         jcenter()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.3'
+        classpath 'com.android.tools.build:gradle:3.0.0'
     }
 }
 
@@ -19,10 +22,10 @@ repositories {
 }
 
 dependencies {
-    compile "com.android.support:support-v4:26.1.0"
-    compile "com.android.support:support-v13:26.1.0"
-    compile "com.android.support:cardview-v7:26.1.0"
-    compile "com.android.support:appcompat-v7:26.1.0"
+    compile "com.android.support:support-v4:27.0.0"
+    compile "com.android.support:support-v13:27.0.0"
+    compile "com.android.support:cardview-v7:27.0.0"
+    compile "com.android.support:appcompat-v7:27.0.0"
 }
 
 // The sample build uses multiple directories to
@@ -35,13 +38,13 @@ List<String> dirs = [
 
 android {
 
-        compileSdkVersion 26
+        compileSdkVersion 27
 
-    buildToolsVersion "26.0.1"
+    buildToolsVersion "26.0.2"
 
     defaultConfig {
         minSdkVersion 21
-        targetSdkVersion 26
+        targetSdkVersion 27
     }
 
     compileOptions {

README.md

@@ -42,8 +42,8 @@ when you are done.
 Pre-requisites
 --------------
 
-- Android SDK 26
-- Android Build Tools v26.0.1
+- Android SDK 27
+- Android Build Tools v26.0.2
 - Android Support Repository
 
 Screenshots

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip

kotlinApp/Application/build.gradle

@@ -0,0 +1,28 @@
+apply plugin: 'com.android.application'
+
+apply plugin: 'kotlin-android'
+
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 26
+    buildToolsVersion '26.0.2'
+    defaultConfig {
+        applicationId "com.example.android.camera2basic"
+        minSdkVersion 21
+        targetSdkVersion 26
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation "com.android.support:appcompat-v7:26.1.0"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
+}

kotlinApp/Application/src/main/AndroidManifest.xml

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2014 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.camera2basic">
+
+    <uses-permission android:name="android.permission.CAMERA" />
+
+    <uses-feature android:name="android.hardware.camera" />
+    <uses-feature android:name="android.hardware.camera.autofocus" />
+
+    <application android:allowBackup="true"
+        android:label="@string/app_name"
+        android:icon="@drawable/ic_launcher"
+        android:theme="@style/MaterialTheme">
+
+        <activity android:name=".CameraActivity"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

kotlinApp/Application/src/main/java/com/example/android/camera2basic/ActivityExtensions.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.camera2basic
+
+import android.support.v4.app.FragmentActivity
+import android.support.v4.content.ContextCompat
+import android.widget.Toast
+
+/**
+ * This file illustrates Kotlin's Extension Functions by extending FragmentActivity.
+ */
+
+/**
+ * Shows a [Toast] on the UI thread.
+ *
+ * @param text The message to show
+ */
+fun FragmentActivity.showToast(text: String) {
+    runOnUiThread { Toast.makeText(this, text, Toast.LENGTH_SHORT).show() }
+}

kotlinApp/Application/src/main/java/com/example/android/camera2basic/AutoFitTextureView.kt

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.camera2basic
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.TextureView
+import android.view.View
+
+/**
+ * A [TextureView] that can be adjusted to a specified aspect ratio.
+ */
+class AutoFitTextureView @JvmOverloads constructor(
+        context: Context,
+        attrs: AttributeSet? = null,
+        defStyle: Int = 0
+) : TextureView(context, attrs, defStyle) {
+
+    private var ratioWidth = 0
+    private var ratioHeight = 0
+
+    /**
+     * Sets the aspect ratio for this view. The size of the view will be measured based on the ratio
+     * calculated from the parameters. Note that the actual sizes of parameters don't matter, that
+     * is, calling setAspectRatio(2, 3) and setAspectRatio(4, 6) make the same result.
+     *
+     * @param width  Relative horizontal size
+     * @param height Relative vertical size
+     */
+    fun setAspectRatio(width: Int, height: Int) {
+        if (width < 0 || height < 0) {
+            throw IllegalArgumentException("Size cannot be negative.")
+        }
+        ratioWidth = width
+        ratioHeight = height
+        requestLayout()
+    }
+
+    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec)
+        val width = View.MeasureSpec.getSize(widthMeasureSpec)
+        val height = View.MeasureSpec.getSize(heightMeasureSpec)
+        if (ratioWidth == 0 || ratioHeight == 0) {
+            setMeasuredDimension(width, height)
+        } else {
+            if (width < height * ratioWidth / ratioHeight) {
+                setMeasuredDimension(width, width * ratioHeight / ratioWidth)
+            } else {
+                setMeasuredDimension(height * ratioWidth / ratioHeight, height)
+            }
+        }
+    }
+
+}