更新支持gradle版本

build.gradle

@@ -3,9 +3,13 @@
 buildscript {
     repositories {
         jcenter()
+        maven {
+            url 'https://maven.google.com/'
+            name 'Google'
+        }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.0'
+        classpath 'com.android.tools.build:gradle:3.0.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,17 +19,21 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        maven {
+            url 'https://maven.google.com/'
+            name 'Google'
+        }
     }
 }
 
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
-
-ext {
-    buildToolsVersion = '25.0.2'
-    compileSdkVersion = 25
-    minSdkVersion = 9
-    targetSdkVersion = 25
-    supportLibraryVersion = '25.3.1'
-}
+//
+//ext {
+//    buildToolsVersion = '25.0.2'
+//    compileSdkVersion = 25
+//    minSdkVersion = 14
+//    targetSdkVersion = 25
+//    supportLibraryVersion = '25.3.1'
+//}

demo/build.gradle

@@ -1,28 +1,12 @@
-// Copyright (C) 2016 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.
-
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion rootProject.ext.compileSdkVersion
-
-    buildToolsVersion rootProject.ext.buildToolsVersion
+    compileSdkVersion 23
 
     defaultConfig {
-        applicationId 'com.google.android.cameraview.demo'
-        minSdkVersion rootProject.ext.minSdkVersion
-        targetSdkVersion rootProject.ext.targetSdkVersion
+        applicationId 'cameraview.demo'
+        minSdkVersion 14
+        targetSdkVersion 23
         versionCode 1
         versionName '1.0'
         testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
@@ -38,7 +22,7 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile "com.android.support:design:$supportLibraryVersion"
+    compile "com.android.support:design:23.4.0"
     compile project(':library')
 
     // Tests

demo/src/main/AndroidManifest.xml

@@ -1,22 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!--
-    Copyright (C) 2016 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 package="com.google.android.cameraview.demo"
           xmlns:android="http://schemas.android.com/apk/res/android">
 
     <uses-permission
-        android:name="android.permission.WRITE_EXTERNAL_STORAGE"
-        android:maxSdkVersion="18"/>
+        android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
 
     <application
         android:allowBackup="true"

demo/src/main/java/com/google/android/cameraview/demo/MainActivity.java

@@ -57,7 +57,6 @@
  * $ adb pull /sdcard/Android/data/com.google.android.cameraview.demo/files/Pictures/picture.jpg
  */
 public class MainActivity extends AppCompatActivity implements
-        ActivityCompat.OnRequestPermissionsResultCallback,
         AspectRatioFragment.Listener {
 
     private static final String TAG = "MainActivity";
@@ -106,6 +105,7 @@ public void onClick(View v) {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        Log.e("ly", "onCreate");
         setContentView(R.layout.activity_main);
         mCameraView = (CameraView) findViewById(R.id.camera);
         if (mCameraView != null) {
@@ -126,6 +126,7 @@ protected void onCreate(Bundle savedInstanceState) {
     @Override
     protected void onResume() {
         super.onResume();
+        Log.e("ly", "onResume");
         if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA)
                 == PackageManager.PERMISSION_GRANTED) {
             mCameraView.start();
@@ -147,11 +148,13 @@ protected void onResume() {
     protected void onPause() {
         mCameraView.stop();
         super.onPause();
+        Log.e("ly", "onPause");
     }
 
     @Override
     protected void onDestroy() {
         super.onDestroy();
+        Log.e("ly", "onDestroy");
         if (mBackgroundHandler != null) {
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
                 mBackgroundHandler.getLooper().quitSafely();
@@ -206,7 +209,7 @@ public boolean onOptionsItemSelected(MenuItem item) {
                     mCameraView.setFlash(FLASH_OPTIONS[mCurrentFlash]);
                 }
                 return true;
-            case R.id.switch_camera:
+            case R.id.switch_camera://切换前后摄像头
                 if (mCameraView != null) {
                     int facing = mCameraView.getFacing();
                     mCameraView.setFacing(facing == CameraView.FACING_FRONT ?

demo/src/main/res/layout/activity_main.xml

@@ -24,7 +24,7 @@
     <com.google.android.cameraview.CameraView
         android:id="@+id/camera"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="match_parent"
         android:layout_alignParentLeft="true"
         android:layout_alignParentStart="true"
         android:layout_alignParentTop="true"

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Tue Sep 06 09:02:59 JST 2016
+#Thu Jan 18 12:59:06 CST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip

library/build.gradle

@@ -1,26 +1,11 @@
-// Copyright (C) 2016 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.
-
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion rootProject.ext.compileSdkVersion
-    buildToolsVersion rootProject.ext.buildToolsVersion
+    compileSdkVersion 23
 
     defaultConfig {
-        minSdkVersion rootProject.ext.minSdkVersion
-        targetSdkVersion rootProject.ext.targetSdkVersion
+        minSdkVersion 14
+        targetSdkVersion 23
         testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
     }
     buildTypes {
@@ -39,8 +24,8 @@ android {
 }
 
 dependencies {
-    compile "com.android.support:support-annotations:$supportLibraryVersion"
-    compile "com.android.support:support-v4:$supportLibraryVersion"
+    compile "com.android.support:support-annotations:27.0.2"
+    compile "com.android.support:support-v4:23.4.0"
 
     // Tests
     testCompile 'junit:junit:4.12'

library/src/main/api14/com/google/android/cameraview/Camera1.java

@@ -288,7 +288,14 @@ private void openCamera() {
         if (mCamera != null) {
             releaseCamera();
         }
-        mCamera = Camera.open(mCameraId);
+        try {
+            mCamera = Camera.open(mCameraId);
+        } catch (Exception e) {
+            mCamera.stopPreview();
+            mCamera.release();
+            mCamera = null;
+            mCamera = Camera.open(mCameraId);
+        }
         mCameraParameters = mCamera.getParameters();
         // Supported preview sizes
         mPreviewSizes.clear();

library/src/main/api9/com/google/android/cameraview/SurfaceViewPreview.java

@@ -17,7 +17,7 @@
 package com.google.android.cameraview;
 
 import android.content.Context;
-import android.support.v4.view.ViewCompat;
+import android.os.Build;
 import android.view.Surface;
 import android.view.SurfaceHolder;
 import android.view.SurfaceView;
@@ -42,8 +42,10 @@ public void surfaceCreated(SurfaceHolder h) {
             @Override
             public void surfaceChanged(SurfaceHolder h, int format, int width, int height) {
                 setSize(width, height);
-                if (!ViewCompat.isInLayout(mSurfaceView)) {
-                    dispatchSurfaceChanged();
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
+                    if (!mSurfaceView.isInLayout()) {
+                        dispatchSurfaceChanged();
+                    }
                 }
             }
 

library/src/main/java/com/google/android/cameraview/CameraView.java

@@ -27,7 +27,6 @@
 import android.support.annotation.Nullable;
 import android.support.v4.os.ParcelableCompat;
 import android.support.v4.os.ParcelableCompatCreatorCallbacks;
-import android.support.v4.view.ViewCompat;
 import android.util.AttributeSet;
 import android.widget.FrameLayout;
 
@@ -142,7 +141,7 @@ private PreviewImpl createPreviewImpl(Context context) {
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();
         if (!isInEditMode()) {
-            mDisplayOrientationDetector.enable(ViewCompat.getDisplay(this));
+            mDisplayOrientationDetector.enable(this.getDisplay());
         }
     }