How to fix App crashes when initializing Translate using google translate API

Question

I'm writing a basic translator app using the google translate API, but the app crashes when I click the button and it reaches the Translate translates initialize, I've tried a few different solutions but can't seem to find a solution that works. This is my first time posting here, i believe what I posted below is the crash log.

import com.google.cloud.translate.Translate;
import com.google.cloud.translate.Translate.TranslateOption;
import com.google.cloud.translate.TranslateOptions;
import com.google.cloud.translate.Translation;
...
public void onClick(View v) {
            Log.d("translatecheck", "I clicked a button");
            String[] isoArr = getResources().getStringArray(R.array.iso);
            Log.d("translatecheck", "isoarr created");
            TextView textElement = (TextView) findViewById(R.id.view);
            Log.d("translatecheck", "textElement initialized");
            //This is where the app cashes
            //Translate translate = TranslateOptions.getDefaultInstance().getService();
            Translate translate = createTranslateService();

            Log.d("translatecheck", "translate service created");
            String sourceLang = "en";
            String targetLang = isoArr[pos];
            TranslateOption srcLang = TranslateOption.sourceLanguage(sourceLang);
            TranslateOption tgtLang = TranslateOption.targetLanguage(targetLang);
            Log.d("translatecheck", "translate service initialized");
            // The text to translate
            editText = findViewById(R.id.edit);
            String text = editText.getText().toString();
            Log.d("translatecheck", "converted edit text to string");
            //Translates some text into spinner language
            Translation translation = translate.translate(text, srcLang, tgtLang);
            /*Translation translation =
                    translate.translate(
                            text,
                            TranslateOption.sourceLanguage("en"),
                            TranslateOption.targetLanguage(isoArr[pos]));
            */

            Log.d("translatecheck", "we have translated");

            //textElement.setText(translation.toString()); //leave this line to assign a specific text
            textElement.setText(translation.getTranslatedText());

        }
...
public static Translate createTranslateService() {
        return TranslateOptions.getDefaultInstance().getService();
}

Crash log:

04-09 01:00:59.442 4076-4076/com.example.translate01 I/DpmTcmClient: RegisterTcmMonitor from: com.android.okhttp.TcmIdleTimerMonitor
04-09 01:00:59.455 4076-4076/com.example.translate01 D/AndroidRuntime: Shutting down VM
04-09 01:00:59.456 4076-4076/com.example.translate01 E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.translate01, PID: 4076
    android.os.NetworkOnMainThreadException
        at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1273)
        at java.net.InetAddress.lookupHostByName(InetAddress.java:431)
        at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
        at java.net.InetAddress.getAllByName(InetAddress.java:215)
        at com.android.okhttp.internal.Network$1.resolveInetAddresses(Network.java:29)
        at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:188)
        at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:157)
        at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:100)
        at com.android.okhttp.internal.http.HttpEngine.createNextConnection(HttpEngine.java:358)
        at com.android.okhttp.internal.http.HttpEngine.nextConnection(HttpEngine.java:341)
        at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:331)
        at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:249)
        at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:437)
        at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:114)
        at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:142)
        at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:84)
        at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1040)
        at com.google.cloud.ServiceOptions.getAppEngineProjectIdFromMetadataServer(ServiceOptions.java:460)
        at com.google.cloud.ServiceOptions.getAppEngineProjectId(ServiceOptions.java:429)
        at com.google.cloud.ServiceOptions.getDefaultProjectId(ServiceOptions.java:336)
        at com.google.cloud.ServiceOptions.getDefaultProject(ServiceOptions.java:313)
        at com.google.cloud.ServiceOptions.<init>(ServiceOptions.java:264)
        at com.google.cloud.translate.TranslateOptions.<init>(TranslateOptions.java:143)
        at com.google.cloud.translate.TranslateOptions.<init>(TranslateOptions.java:39)
        at com.google.cloud.translate.TranslateOptions$Builder.build(TranslateOptions.java:138)
        at com.google.cloud.translate.TranslateOptions.getDefaultInstance(TranslateOptions.java:261)
        at com.example.translate01.MainActivity.createTranslateService(MainActivity.java:96)
        at com.example.translate01.MainActivity$1.onClick(MainActivity.java:51)
        at android.view.View.performClick(View.java:5209)
        at android.view.View$PerformClick.run(View.java:21247)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:157)
        at android.app.ActivityThread.main(ActivityThread.java:5428)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Please [edit] your question to provide the complete [stack trace from the crash](https://stackoverflow.com/a/23353174). — Mike M., Apr 09 '19 at 05:58
share your crash log. you probably forgot to add the INTERNET permission in the manifest. — Angel Koh, Apr 09 '19 at 05:58
Kindly update your question with stack trace when you build/run the app. The answer would be hidden in the trace itself. — S.K. Venkat, Apr 09 '19 at 06:03
Sorry it took me a bit to format the post to update it, lmk if there is anything else I can do. — Corey Brasseaux, Apr 09 '19 at 06:11

score 0 · Answer 1 · answered Apr 09 '19 at 06:27

You are having a NetworkOnMainThreadException, which means you are running internet related tasks on the main thread.

You can't run internet related tasks on Android Main thread (as for why, see Keeping your app responsive).

Just move whichever translate operation that does internet tasks (presumably translate.translate()) into a new Thread, Async task, or whatever structure you prefer, and listen for the callback for the result.

How to fix App crashes when initializing Translate using google translate API

1 Answers1