プロジェクトに新しいクラスを追加すると、アプリが終了します

Question

私はそれを解決しようとしていますが、できませんでした。私は数時間前に投稿し、誰かが私にいくつかのアドバイスをします。しかし残念ながらそれは動作しません.. LoginActivity、BackgroundTask、RegisterActivityクラスを私のプロジェクトに追加しました。 それらを組み合わせる前に、php-mysql connectがうまく働いていたプロジェクト。 私は何をすればいいのかわかりません。

これはLoginActivityコードです。

public class LoginActivity extends Activity { 
    EditText ET_NAME,ET_PASS; 
    String login_name,login_pass; 

    @Override 

    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.login_main); 
     ET_NAME = (EditText)findViewById(R.id.user_name); 
     ET_PASS = (EditText)findViewById(R.id.user_pass); 
    } 
    public void userReg(View view) 
    { 
     startActivity(new Intent(this,RegisterActivity.class)); 
    } 
    public void userLogin(View view) 
    { 
     login_name = ET_NAME.getText().toString(); 
     login_pass = ET_PASS.getText().toString(); 
     String method = "login"; 
     BackgroundTask backgroundTask = new BackgroundTask(this); 
     backgroundTask.execute(method,login_name,login_pass); 
    } 
} 

これはBackgroundTask.javaです。

public class BackgroundTask extends AsyncTask<String,Void,String> { 
    AlertDialog alertDialog; 
    Context ctx; 

    BackgroundTask(Context ctx) { 
     this.ctx = ctx; 
    } 

    @Override 
    protected void onPreExecute() { 
    } 

    @Override 
    protected String doInBackground(String... params) { 
     String reg_url = "http://35.160.135.119/webapp/register.php"; 
     String login_url = "http://35.160.135.119/webapp/login.php"; 
     String method = params[0]; 
     if (method.equals("register")) { 
      String name = params[1]; 
      String user_name = params[2]; 
      String user_pass = params[3]; 
      try { 
       URL url = new URL(reg_url); 
       HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection(); 

       httpURLConnection.setRequestMethod("POST"); 
       httpURLConnection.setDoOutput(true); 
       //httpURLConnection.setDoInput(true); 
       OutputStream OS = httpURLConnection.getOutputStream(); 
       BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(OS, "UTF-8")); 
       String data = URLEncoder.encode("user", "UTF-8") + "=" + URLEncoder.encode(name, "UTF-8") + "&" + 
         URLEncoder.encode("user_name", "UTF-8") + "=" + URLEncoder.encode(user_name, "UTF-8") + "&" + 
         URLEncoder.encode("user_pass", "UTF-8") + "=" + URLEncoder.encode(user_pass, "UTF-8"); 


       bufferedWriter.write(data); 
       bufferedWriter.flush(); 
       bufferedWriter.close(); 
       OS.close(); 
       InputStream IS = httpURLConnection.getInputStream(); 
       IS.close(); 
       //httpURLConnection.connect(); 
       httpURLConnection.disconnect(); 
       return "Registration Success..."; 
      } catch (MalformedURLException e) { 
       e.printStackTrace(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } else if (method.equals("login")) { 
      String login_name = params[1]; 
      String login_pass = params[2]; 
      try { 
       URL url = new URL(login_url); 
       HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection(); 
       httpURLConnection.setRequestMethod("POST"); 
       httpURLConnection.setDoOutput(true); 
       httpURLConnection.setDoInput(true); 
       OutputStream outputStream = httpURLConnection.getOutputStream(); 
       BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8")); 
       String data = URLEncoder.encode("login_name", "UTF-8") + "=" + URLEncoder.encode(login_name, "UTF-8") + "&" + 
         URLEncoder.encode("login_pass", "UTF-8") + "=" + URLEncoder.encode(login_pass, "UTF-8"); 
       bufferedWriter.write(data); 
       bufferedWriter.flush(); 
       bufferedWriter.close(); 
       outputStream.close(); 
       InputStream inputStream = httpURLConnection.getInputStream(); 
       BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "iso-8859-1")); 
       String response = ""; 
       String line = ""; 
       while ((line = bufferedReader.readLine()) != null) { 
        response += line; 
       } 
       bufferedReader.close(); 
       inputStream.close(); 
       httpURLConnection.disconnect(); 
       return response; 
      } catch (MalformedURLException e) { 
       e.printStackTrace(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } 
     return null; 
    } 

    @Override 
    protected void onProgressUpdate(Void... values) { 
     super.onProgressUpdate(values); 
    } 

    @Override 
    protected void onPostExecute(String result) { 
     if (result.equals("Registration Success...")) { 
      Toast.makeText(ctx, result, Toast.LENGTH_LONG).show(); 
     } else { 
      alertDialog.setMessage(result); 
      alertDialog.show(); 
     } 
    } 
} 

とRegisterActivityコード。

public class RegisterActivity extends Activity { 
    EditText ET_NAME, ET_USER_NAME, ET_USER_PASS; 
    String name, user_name, user_pass; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.register_layout); 
     ET_NAME = (EditText)findViewById(R.id.name); 
     ET_USER_NAME = (EditText)findViewById(R.id.new_user_name); 
     ET_USER_PASS = (EditText)findViewById(R.id.new_user_pass); 
    } 
    public void userReg(View view) 
    { 
     name = ET_NAME.getText().toString(); 
     user_name = ET_USER_NAME.getText().toString(); 
     user_pass = ET_USER_PASS.getText().toString(); 
     String method = "register"; 
     BackgroundTask backgroundTask = new BackgroundTask(this); 
     backgroundTask.execute(method,name, user_name, user_pass); 
    } 

} 

これはログです。あなたがFirebaseを選択したログキャットウィンドウで

I/System.out: Sending WAIT chunk 
W/ActivityThread: Application com.example.jina.a1105gmdemo is waiting for the debugger on port 8100... 
I/dalvikvm: Debugger is active 
I/System.out: Debugger has connected 
I/System.out: waiting for debugger to settle... 
Connected to the target VM, address: 'localhost:8600', transport: 'socket' 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: debugger has settled (1372) 
I/MultiDex: VM with version 1.6.0 does not have multidex support 
I/MultiDex: install 
I/MultiDex: MultiDexExtractor.load(/data/app/com.example.jina.a1105gmdemo-35.apk, false) 
I/MultiDex: Detected that extraction must be performed. 
I/MultiDex: Trying to delete old file /data/data/com.example.jina.a1105gmdemo/code_cache/secondary-dexes/com.example.jina.a1105gmdemo-34.apk.classes2.dex of size 2898496 
I/MultiDex: Deleted old file /data/data/com.example.jina.a1105gmdemo/code_cache/secondary-dexes/com.example.jina.a1105gmdemo-34.apk.classes2.dex 
I/MultiDex: Trying to delete old file /data/data/com.example.jina.a1105gmdemo/code_cache/secondary-dexes/com.example.jina.a1105gmdemo-34.apk.classes2.zip of size 934986 
I/MultiDex: Deleted old file /data/data/com.example.jina.a1105gmdemo/code_cache/secondary-dexes/com.example.jina.a1105gmdemo-34.apk.classes2.zip 
I/MultiDex: Extraction is needed for file /data/data/com.example.jina.a1105gmdemo/code_cache/secondary-dexes/com.example.jina.a1105gmdemo-35.apk.classes2.zip 
I/MultiDex: Extracting /data/data/com.example.jina.a1105gmdemo/code_cache/secondary-dexes/com.example.jina.a1105gmdemo-35.apk.classes2089171779.zip 
I/MultiDex: Renaming to /data/data/com.example.jina.a1105gmdemo/code_cache/secondary-dexes/com.example.jina.a1105gmdemo-35.apk.classes2.zip 
I/MultiDex: Extraction success - length /data/data/com.example.jina.a1105gmdemo/code_cache/secondary-dexes/com.example.jina.a1105gmdemo-35.apk.classes2.zip: 934986 
I/MultiDex: load found 1 secondary dex files 
D/dalvikvm: DexOpt: --- BEGIN 'com.example.jina.a1105gmdemo-35.apk.classes2.zip' (bootstrap=0) --- 
D/dalvikvm: DexOpt: --- END 'com.example.jina.a1105gmdemo-35.apk.classes2.zip' (success) --- 
D/dalvikvm: DEX prep '/data/data/com.example.jina.a1105gmdemo/code_cache/secondary-dexes/com.example.jina.a1105gmdemo-35.apk.classes2.zip': unzip in 69ms, rewrite 801ms 
I/MultiDex: install done 
I/FirebaseInitProvider: FirebaseApp initialization unsuccessful 

Answer 1

、あなたが「表示のみ選択aplication」を選択し、エラーを読んでください、しかし、多分あなたはそれを定義するマニフェストに忘れてしまいました。