質問編集履歴
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追記
test
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test
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@@ -8,118 +8,10 @@
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import android.content.Intent;
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import android.content.res.Configuration;
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import android.os.AsyncTask;
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import android.os.Bundle;
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import android.support.v4.widget.DrawerLayout;
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import android.support.v7.app.ActionBar;
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import android.support.v7.app.ActionBarDrawerToggle;
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import android.support.v7.app.AppCompatActivity;
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import android.view.MenuItem;
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import android.view.View;
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import android.widget.AdapterView;
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import android.widget.ArrayAdapter;
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import android.widget.EditText;
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import android.widget.ListView;
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import android.widget.TextView;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.PrintStream;
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import java.math.BigInteger;
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60
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import java.net.HttpURLConnection;
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62
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import java.net.MalformedURLException;
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64
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import java.net.URL;
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66
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import java.security.MessageDigest;
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68
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public class LoginActivity extends AppCompatActivity implements View.OnClickListener, ListView.OnItemClickListener {
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75
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// ナビゲーションドロワーのトグル
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private ActionBarDrawerToggle mDrawerToggle;
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// listviewで表示するもの
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static String[] menuItems = { "ホーム", "ログイン" };
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static ArrayAdapter<String> adapter;
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// DrawerのListView
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private ListView drawerListView;
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private DrawerLayout drawerLayout;
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// editText
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private EditText loginText;
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private EditText passwdText;
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// textView
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private TextView connect_TextView;
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private TextView login_TextView;
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private TextView passwd_TextView;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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@@ -430,12 +322,6 @@
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430
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431
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if (error != "error"){
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System.out.println("--------------------------------------------------error--------------------------------------------------------");
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System.out.println(error);
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System.out.println("--------------------------------------------------error--------------------------------------------------------");
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// 画面遷移
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Intent home = new Intent(this, HomeActivity.class);
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@@ -485,3 +371,225 @@
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```
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``` AsyckTask
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// 非同期処理で通信処理を行うクラス
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382
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public class Request extends AsyncTask<String, Void, JSONObject> {
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private TextView _connect_TextView;
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private TextView _login_TextView;
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388
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private TextView _passwd_TextView;
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private String _error;
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// コンストラクタ
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398
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399
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public Request(TextView mconnect_TextView, TextView mlogijn_TextView, TextView mpasswd_TextView, String merror){
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400
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_connect_TextView = mconnect_TextView;
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_login_TextView = mlogijn_TextView;
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_passwd_TextView = mpasswd_TextView;
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407
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_error = merror;
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}
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@Override
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414
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415
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protected JSONObject doInBackground(String... params) {
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418
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419
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// サーバーに送るjson
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final String json = "{" +
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"\"hash\":" + "\"" + params[0] + "\"," +
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"\"user\":" + "{" + "\"loginid\":" + "\"" + params[1] + "\"," +
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"\"passwd\":" + "\"" + params[2] + "\"" + "}" +
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"}";
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430
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431
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432
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String result = null;
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435
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436
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437
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try{
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439
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String buffer = "";
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// url
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442
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443
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HttpURLConnection con = null;
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444
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445
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URL url = new URL("url");
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446
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447
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con = (HttpURLConnection) url.openConnection();
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448
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449
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450
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451
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// POST送信
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452
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453
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con.setRequestMethod("POST");
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454
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455
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456
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457
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// リダイレクトボディの出力を行う
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458
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459
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con.setDoOutput(true);
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460
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461
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462
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463
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// リダイレクトの許可
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464
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465
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con.setInstanceFollowRedirects(false);
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466
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467
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468
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469
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// ヘッダーの設定
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470
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471
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con.setRequestProperty("Content-Type", "application/json; charset=utf-8");
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472
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473
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474
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475
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// 出力ストリーム
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476
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477
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OutputStream os = con.getOutputStream();
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478
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479
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PrintStream ps = new PrintStream(os);
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480
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+
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481
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+
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482
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+
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483
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ps.print(json);
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484
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485
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ps.close();
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486
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487
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488
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489
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BufferedReader reader = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8"));
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490
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+
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491
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buffer = reader.readLine();
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492
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493
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JSONObject jsonObject= new JSONObject(buffer);
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494
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+
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495
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+
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496
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+
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497
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return new JSONObject(buffer);
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498
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+
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499
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+
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500
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+
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501
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} catch (MalformedURLException e) {
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502
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+
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503
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e.printStackTrace();
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504
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+
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505
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} catch (IOException e) {
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506
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+
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507
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e.printStackTrace();
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508
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+
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509
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} catch (JSONException e) {
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510
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+
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511
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e.printStackTrace();
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512
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+
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513
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}
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514
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+
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515
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516
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517
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return null;
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518
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+
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519
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}
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520
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521
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522
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523
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+
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524
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+
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525
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public void onPostExecute(JSONObject result) {
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526
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527
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try {
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528
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529
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if(result.getString("error") != null){
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530
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+
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531
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_connect_TextView.setText("IDかパスワードが間違っています。");
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532
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+
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533
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_error = "error";
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534
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+
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535
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}
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536
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+
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537
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} catch (JSONException e) {
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538
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+
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539
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e.printStackTrace();
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540
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+
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541
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}
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542
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+
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543
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}
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544
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+
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545
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}
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546
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+
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547
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}
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548
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+
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549
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```
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550
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+
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551
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+
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552
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+
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553
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上記のLoginActivityの
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554
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555
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```
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556
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+
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557
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// 通信処理
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558
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559
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http_request(hash, loginid, passwd, error);
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560
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561
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+
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562
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+
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563
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+
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564
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+
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565
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if (error != "error"){
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566
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+
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567
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// 画面遷移
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568
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569
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Intent home = new Intent(this, HomeActivity.class);
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570
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571
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startActivity(home);
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572
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+
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573
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}
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574
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+
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575
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+
```
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576
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+
|
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577
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+
で、responseでエラーが帰ってこなかったら、画面遷移させて、エラーが帰ってきたら、画面遷移させない処理をしたいです。ここで、error変数はデータ通信のresponseをasyncTaskで代入しています。
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578
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+
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579
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+
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580
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+
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581
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+
asynkTaskが非同期なので、上記のhttp_request関数(asynkTaskクラスを含む)処理が終わる前に、次の処理にいってしまう?ため、error関数がresponseとして帰ってくる前に、画面遷移の処理が走ってしまいます。
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582
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+
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583
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+
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584
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+
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585
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+
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586
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+
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587
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+
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588
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+
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589
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+
なので、上記のhttp_request関数(asynkTaskクラスを含む)処理を非同期ではなく、同期処理をしたいのですが、どのようにコード作成をすれば良いでしょいか?
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590
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+
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591
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+
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592
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+
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593
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+
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594
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+
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595
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+
ご教授お願いします。
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