我最近在遵循本教程时向我的应用中添加了一个应用引擎模块:
https://cloud.google.com/appengine/docs/java/endpoints/helloendpoints-android-studio
我的EndpointSasynCtask(应用程序引擎模块内)看起来像:
import com.google.api.client.extensions.android.http.AndroidHttp;
import com.google.api.client.extensions.android.json.AndroidJsonFactory;
import com.google.api.client.googleapis.services.AbstractGoogleClientRequest;
import com.google.api.client.googleapis.services.GoogleClientRequestInitializer;
import com.google.appengine.repackaged.com.google.common.base.Pair;
import java.io.IOException;
import javax.naming.Context;
class EndpointsAsyncTask extends AsyncTask<Pair<Context, String>, Void, String> {
private static MyApi myApiService = null;
private Context context;
@Override
protected String doInBackground(Pair<Context, String>... params) {
if(myApiService == null) { // Only do this once
MyApi.Builder builder = new MyApi.Builder(AndroidHttp.newCompatibleTransport(),
new AndroidJsonFactory(), null)
// options for running against local devappserver
// - 10.0.2.2 is localhost's IP address in Android emulator
// - turn off compression when running against local devappserver
.setRootUrl("http://10.0.2.2:8080/_ah/api/")
.setGoogleClientRequestInitializer(new GoogleClientRequestInitializer() {
@Override
public void initialize(AbstractGoogleClientRequest<?> abstractGoogleClientRequest) throws IOException {
abstractGoogleClientRequest.setDisableGZipContent(true);
}
});
// end options for devappserver
myApiService = builder.build();
}
context = params[0].first;
String name = params[0].second;
try {
return myApiService.sayHi(name).execute().getData();
} catch (IOException e) {
return e.getMessage();
}
}
@Override
protected void onPostExecute(String result) {
Toast.makeText(context, result, Toast.LENGTH_LONG).show();
}
}
我得到'无法解决符号/方法'asynctask,.build(),.sayhi()和吐司,只是提及一些。
我开始绑扎以弄清楚问题是什么,并意识到那些拍拍的进口是不在那里的。所以,我绑了添加:
import android.os.Bundle;
然后从那里继续进行。不幸的是,这些也给了我错误。
所以,我在build.gradle文件中查看,并意识到AppCompat依赖性不存在。
我的build.gradle for App Engine模块看起来像这样:
// If you would like more information on the gradle-appengine-plugin please refer to the github page
// https://github.com/GoogleCloudPlatform/gradle-appengine-plugin
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.google.appengine:gradle-appengine-plugin:1.9.34'
}
}
repositories {
jcenter()
}
apply plugin: 'java'
apply plugin: 'war'
apply plugin: 'appengine'
sourceCompatibility = JavaVersion.VERSION_1_7
targetCompatibility = JavaVersion.VERSION_1_7
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:25.0.1'
compile 'com.google.appengine:appengine-endpoints:1.9.34'
compile 'com.google.appengine:appengine-endpoints-deps:1.9.34'
compile 'javax.servlet:servlet-api:2.5'
compile 'com.google.http-client:google-http-client-android:1.20.0'
compile 'com.google.api-client:google-api-client:1.20.0'
appengineSdk 'com.google.appengine:appengine-java-sdk:1.9.34'
}
appengine {
downloadSdk = true
appcfg {
oauth2 = true
}
endpoints {
getClientLibsOnBuild = true
getDiscoveryDocsOnBuild = true
}
}
现在,当构建我的项目时,会出现错误:
Error:(25, 13) Failed to resolve: com.android.support:appcompat-v7:25.0.1
我是否缺少App Engine模块的工作方式,还是我的问题不是AppCompat?在消息窗口中,它为我提供了"安装存储库和同步督辆托索的选项,但是当我单击它时,什么也不会发生。
任何帮助将不胜感激,谢谢!
好吧,我想我已经弄清楚了问题所在。我的端点Sasynctask旨在在应用模块中而不是附件。如果有人能验证这一点,我将不胜感激!
我希望这对可能会被教程混淆的其他任何人。