我一直在修改Azure的空间锚点API。我遵循了Microsoft提供的文档和示例,没有很多问题,直到尝试使用它来创建自己的项目。当我尝试使用Spatial anchors API运行自定义项目时,它崩溃了,寻找应由gradle中指定的库提供的某些功能。错误日志显示:
2019-05-28 10:32:10.642 28982-28982 / com.azurelib.azureanchorsclean E / Android运行时:致命例外:主要 流程:com.azurelib.azureanchorsclean,PID:28982 java.lang.UnsatisfiedLinkError中:未找到com.microsoft.azure.spatialanchors.status com.microsoft.azure.spatialanchors.NativeLibrary.ssc_cloud_spatial_anchor_session_create(com.microsoft.azure.spatialanchors.Out)实现(试过Java_com_microsoft_azure_spatialanchors_NativeLibrary_ssc_1cloud_1spatial_1anchor_1session_1create和Java_com_microsoft_azure_spatialanchors_NativeLibrary_ssc_1cloud_1spatial_1anchor_1session_1create__Lcom_microsoft_azure_spatialanchors_Out_2) 在com.microsoft.azure.spatialanchors.NativeLibrary.ssc_cloud_spatial_anchor_session_create(本机方法) ...
相关的ssc_cloud ...函数可以在gradle构建中指定的spatialanchors_java依赖项中找到:
对于云会话,我在MainActivity的onResume()
中开始一个新活动:
@Override
protected void onResume(){
super.onResume();
Intent intent = new Intent(this, AzureSpatialAnchorsActivity.class);
intent.putExtra("BasicDemo", true);
startActivity(intent);
}
然后在AzureSpatialAnchorsActivity
上创建ArCore
Session
并启动锚点管理器:
@Override
protected void onResume() {
super.onResume();
if (session == null) {
try {
...
// Create the session.
session = new Session(/* context= */ this);
... //Required catch statements
} catch (Exception e) {
message = "Failed to create AR session";
exception = e;
}
}
try {
session.resume();
startNewSession();
} catch (CameraNotAvailableException e) {
...
}
}
private void startNewSession() {
destroySession();
cloudAnchorManager = new AzureSpatialAnchorsManager(session);
cloudAnchorManager.addAnchorLocatedListener(this::onAnchorLocated);
cloudAnchorManager.addLocateAnchorsCompletedListener(this::onLocateAnchorsCompleted);
cloudAnchorManager.addSessionUpdatedListener(this::onSessionUpdated);
cloudAnchorManager.start();
}
发生错误是因为当我尝试创建CloudSpatialAnchorSession
对象时
public AzureSpatialAnchorsManager(Session arCoreSession) {
spatialAnchorsSession = new CloudSpatialAnchorSession();
...
}
构造函数从NativeLibrary
调用函数
public CloudSpatialAnchorSession() {
Out<Long> result_handle = new Out();
status resultStatus = NativeLibrary.ssc_cloud_spatial_anchor_session_create(result_handle);
this.handle = (Long)result_handle.value;
NativeLibraryHelpers.checkStatus(this.handle, resultStatus);
CookieTracker.add(this);
}
问题似乎是我之前在jar屏幕截图中显示的内容全部。 ssc_cloud_spatial_anchor_session_create
被调用,应用程序陷入死胡同:
class NativeLibrary {
NativeLibrary() {
}
...
static native status ssc_cloud_spatial_anchor_session_create(Out<Long> var0);
...
}
gradle和其他配置是从原始Microsoft示例中复制/粘贴的。我找不到丢失的内容,这导致我的自定义项目找不到NativeLibrary
的实现。作为参考,here's the Microsoft project是我用来建立自己的项目的
这是我的 actual gradle文件,仅供参考:
项目gradle
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.3.2'
}
}
allprojects {
repositories {
mavenLocal()
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
模块gradle:
apply plugin: 'com.android.application'
def azureSpatialAnchorsSdkVersion = '1.1.0'
android {
compileSdkVersion 27
defaultConfig {
applicationId "com.azurelib.azureanchorsclean"
minSdkVersion 24
targetSdkVersion 27
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.google.ar:core:1.7.0'
implementation "com.microsoft.azure.spatialanchors:spatialanchors_jni:[${azureSpatialAnchorsSdkVersion}]"
implementation "com.microsoft.azure.spatialanchors:spatialanchors_java:[${azureSpatialAnchorsSdkVersion}]"
implementation 'de.javagl:obj:0.2.1'
implementation 'com.microsoft.aad:adal:1.16.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
谢谢!
答案 0 :(得分:2)
由于您正在创建自己的项目,因此要在应用程序类的OnCreate内部调用initialize方法吗?
@Override
public void onCreate() {
super.onCreate();
// Use application's context to initialize CloudServices!
CloudServices.initialize(this);
}