Question

我最近在遵循本教程时向我的应用添加了App Engine模块：

https://cloud.google.com/appengine/docs/java/endpoints/helloendpoints-android-studio

My EndpointsAsyncTask（在App Engine模块内）如下所示：

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AsyncTask，.build（）,. sayHi（）和Toast的符号/方法错误，仅举几例。

我开始想弄清问题是什么，并意识到这些拍的进口不存在。所以，我加入了：

import android.os.Bundle;

然后从那里继续。不幸的是，那些也给了我错误。

所以，我查看了我的build.gradle文件并意识到AppCompat依赖关系不存在。

我对app引擎模块的build.gradle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，在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

我是否遗漏了应用引擎模块的工作方式，或者我的问题不是AppCompat？在消息窗口中，它为我提供了“安装存储库和同步项”的选项，但是当我点击它时，没有任何反应。

非常感谢任何帮助，谢谢！

Answer 1

好吧，我想我已经弄明白问题是什么了。我的EndpointsAsyncTask意味着在App模块而不是AppEngine。如果有人可以验证这一点我会很感激！

我希望这可以帮助其他可能会被教程搞糊涂的人。

Android App Engine模块无法找到AppCompat库

1 个答案: