노방이야기

//btnStop.setEnabled(false);
btnStop.setClickable(false);

<meta-data
    android:name="com.google.android.gms.ads.APPLICATION_ID"
    android:value="@string/admob_app_id"/>

<com.google.android.gms.ads.AdView xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:id="@+id/adView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    ads:adSize="SMART_BANNER"
    ads:adUnitId="@string/banner_ad_unit_id"><!-- @string/admob_app_id, banner test id : ca-app-pub-3940256099942544/6300978111 -->

</com.google.android.gms.ads.AdView>

MobileAds.initialize(this, getString(R.string.admob_app_id));
mAdView = findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);

<resources>
    <string name="app_name">GithubSearch</string>

    <string name="search">Search</string>

    <!--TODO (1) Add a string stating that an error has occurred-->
    <string name="error_message">
        Failed to get results. Please try again.
    </string>
</resources>

    <!--TODO (2) Wrap the ScrollView in a FrameLayout-->
    <!--TODO (3) Make the width and height of the FrameLayout match_parent-->
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <ScrollView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp">
            <TextView
                android:id="@+id/tv_github_search_results_json"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Make a search!"
                android:textSize="18sp" />
        </ScrollView>
    </FrameLayout> 

        <TextView
            android:id="@+id/tv_error_message_display"
            android:textSize="22sp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="16dp"
            android:text="@string/error_message"
            android:visibility="invisible" /> 

        <ProgressBar
            android:id="@+id/pb_loading_indicator"
            android:layout_height="42dp"
            android:layout_width="42dp"
            android:layout_gravity="center"
            android:visibility="invisible" /> 

import android.widget.ProgressBar;
...
    // TODO (12) Create a variable to store a reference to the error message TextView
    private TextView mErrorMessageDisplay;
    // TODO (24) Create a ProgressBar variable to store a reference to the ProgressBar
    private ProgressBar mLoadingIndicator; 

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mSearchBoxEditText = (EditText) findViewById(R.id.et_search_box);
        mUrlDisplayTextView = (TextView) findViewById(R.id.tv_url_display);
        mSearchResultsTextView = (TextView) findViewById(R.id.tv_github_search_results_json);

        // TODO (13) Get a reference to the error TextView using findViewById
        mErrorMessageDisplay = (TextView) findViewById(R.id.tv_error_message_display);
        // TODO (25) Get a reference to the ProgressBar using findViewById
        mLoadingIndicator = (ProgressBar) findViewById(R.id.pb_loading_indicator);
    } 

    // TODO (14) Create a method called showJsonDataView to show the data and hide the error
    private void showJsonDataView() {
        // First, make sure the error is invisible
        mErrorMessageDisplay.setVisibility(View.INVISIBLE);
        // Then, make sure the JSON data is visible
        mSearchResultsTextView.setVisibility(View.VISIBLE);
    }


    // TODO (15) Create a method called showErrorMessage to show the error and hide the data
    private void showErrorMessage() {
        // First, hide the currently visible data
        mSearchResultsTextView.setVisibility(View.INVISIBLE);
        // Then, show the error
        mErrorMessageDisplay.setVisibility(View.VISIBLE);
    } 

        @Override
        protected void onPostExecute(String githubSearchResults) {
            if (githubSearchResults != null && !githubSearchResults.equals("")) {
                // TODO (17) Call showJsonDataView if we have valid, non-null results
                showJsonDataView();
                mSearchResultsTextView.setText(githubSearchResults);
            } else {
                // TODO (16) Call showErrorMessage if the result is null in onPostExecute
                showErrorMessage();
            }
        } 

        // TODO (26) Override onPreExecute to set the loading indicator to visible
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            mLoadingIndicator.setVisibility(View.VISIBLE);
        } 

    @Override
    protected void onPostExecute(String githubSearchResults) {
        // TODO (27) As soon as the loading is complete, hide the loading indicator
        mLoadingIndicator.setVisibility(View.INVISIBLE);
       
        if (githubSearchResults != null && !githubSearchResults.equals("")) {
            // TODO (17) Call showJsonDataView if we have valid, non-null results
            showJsonDataView();
            mSearchResultsTextView.setText(githubSearchResults);
        } else {
            // TODO (16) Call showErrorMessage if the result is null in onPostExecute
            showErrorMessage();
        }
    } 

import android.os.AsyncTask;

...

     // TODO (1) Create a class called GithubQueryTask that extends AsyncTask<URL, Void, String>
    public class GithubQueryTask extends AsyncTask<URL, Void, String> {

        // TODO (2) Override the doInBackground method to perform the query. Return the results. (Hint: You've already written the code to perform the query)
        @Override
        protected String doInBackground(URL... params) {
            URL searchUrl = params[0];
            String githubSearchResults = null;
            try {
                githubSearchResults = NetworkUtils.getResponseFromHttpUrl(searchUrl);
            } catch (IOException e) {
                e.printStackTrace();
            }
            return githubSearchResults;
        }


        // TODO (3) Override onPostExecute to display the results in the TextView
        @Override
        protected void onPostExecute(String githubSearchResults) {
            if (githubSearchResults != null && !githubSearchResults.equals("")) {
                mSearchResultsTextView.setText(githubSearchResults);
            }
        }
    }

//        String githubSearchResults = null;
//        try {
//            githubSearchResults = NetworkUtils.getResponseFromHttpUrl(githubSearchUrl);
//            mSearchResultsTextView.setText(githubSearchResults);
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
        // TODO (4) Create a new GithubQueryTask and call its execute method, passing in the url to query
        new GithubQueryTask().execute(githubSearchUrl); 

import java.io.IOException;

...

     private void makeGithubSearchQuery() {
        String githubQuery = mSearchBoxEditText.getText().toString();
        URL githubSearchUrl = NetworkUtils.buildUrl(githubQuery);
        mUrlDisplayTextView.setText(githubSearchUrl.toString());

        // TODO (2) Call getResponseFromHttpUrl and display the results in mSearchResultsTextView
        // TODO (3) Surround the call to getResponseFromHttpUrl with a try / catch block to catch an IOException
        String githubSearchResults = null;
        try {
            githubSearchResults = NetworkUtils.getResponseFromHttpUrl(githubSearchUrl);
            mSearchResultsTextView.setText(githubSearchResults);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

 2019-01-13 13:22:41.295 3960-3960/com.example.android.datafrominternet E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.android.datafrominternet, PID: 3960
    android.os.NetworkOnMainThreadException
        at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1448)
        at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:102)
        at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:90)
        at java.net.InetAddress.getAllByName(InetAddress.java:787)
        at com.android.okhttp.Dns$1.lookup(Dns.java:39)
        at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:175)
        at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:141)
        at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:83)
        at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:174)
        at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
        at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
        at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
        at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
        at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
        at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:407)
        at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:244)
        at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getInputStream(DelegatingHttpsURLConnection.java:210)
        at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getInputStream(Unknown Source:0)
        at com.example.android.datafrominternet.utilities.NetworkUtils.getResponseFromHttpUrl(NetworkUtils.java:76)
        at com.example.android.datafrominternet.MainActivity.makeGithubSearchQuery(MainActivity.java:63)
        at com.example.android.datafrominternet.MainActivity.onOptionsItemSelected(MainActivity.java:80)
        at android.app.Activity.onMenuItemSelected(Activity.java:3435)