質問編集履歴
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         @@ -146,7 +146,7 @@ 
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            Edit画面で入力し、ボタンを押すと、デフォルトの表示になってしまうのですがなぜでしょうか。。。
         
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            ボタンをタップするまではエラーなく動作していますが、記述は合ってますでしょうか?
         
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            (startActivityForResult,  
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            (startActivityForResult, onActivityResultあたりが合ってるか不安です)
         
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         @@ -1,64 +1,22 @@ 
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       1 
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            こちらを参考にしました。
         
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            [http://yan-note.blogspot.jp/2010/09/android_4530.html
         
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            ](http://yan-note.blogspot.jp/2010/09/android_4530.html)
         
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            putExtraを使うのでしょうか?
         
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            それとも別の方法?
         
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            NameJobEditActivity.java
         
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            ```ここに言語を入力
         
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            public class NameJobEditActivity  extends AppCompatActivity{
         
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                EditText editName;
         
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                EditText editJob;
         
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                Button button;
         
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                SubActivity subActivity;
         
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                String editedName;
         
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                String editedJob;
         
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                Intent njIntent;
         
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                String subName;
         
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                String subJob;
         
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               @Override
         
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               public void onCreate(Bundle savedInstanceState) {
         
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                   super.onCreate(savedInstanceState);
         
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                   setContentView(R.layout.name_job_edit);
         
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                   editName = (EditText) findViewById(R.id.editName);
         
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                   editJob = (EditText) findViewById(R.id.editJob);
         
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                   button = (Button) findViewById(R.id.button);
         
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                   editedName = editName.getText().toString();
         
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                   editedJob = editJob.getText().toString();
         
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                   njIntent = getIntent();
         
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                   subName = njIntent.getStringExtra("LIST_NAMES");
         
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                   subJob =njIntent.getStringExtra("LIST_JOBS");
         
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                   button.setOnClickListener(new View.OnClickListener() {
         
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                       @Override
         
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                       public void onClick(View v) {
         
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                           subActivity.text.setText(editedName);
         
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                           subActivity.text2.setText(editedJob);
         
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                           // ToDo ページを閉じる
         
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                        }
         
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                    });
         
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            ```
         
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            Sub
         
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            ```ここに言語を入力
         
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            public class SubActivity extends AppCompatActivity{
         
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                String name;
         
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                public String name;
         
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                String job;
         
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                public String job;
         
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                public int image;
         
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                public String comment;
         
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                public TextView text;
         
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                public TextView text2;
         
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                private static final int SUBACTIVITY = 1;
         
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                @Override
         
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                public void onCreate(Bundle savedInstanceState) {
         
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                    super.onCreate(savedInstanceState);
         
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         @@ -78,14 +36,10 @@ 
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                    name = sub.getStringExtra("list_names");
         
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                    job = sub.getStringExtra("list_jobs");
         
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                    image = sub.getIntExtra("list_images", R.drawable.human);
         
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                    comment = sub.getStringExtra("list_comments");
         
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                    assert text != null;
         
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                    assert text2 != null;
         
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                    assert imageView != null;
         
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                    assert text3 != null;
         
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                    text.setText(name);
         
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                    text2.setText(job);
         
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                    imageView.setImageResource(image);
         
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         @@ -95,74 +49,104 @@ 
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                   text.setOnClickListener(new View.OnClickListener() {
         
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                        @Override
         
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                        public void onClick(View v) {
         
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                            Intent njIntent = new Intent();
         
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                            njIntent.putExtra("LIST_NAMES",name);
         
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                            njIntent.putExtra("LIST_JOBS",job);
         
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                            njIntent.putExtra("LIST_IMAGE",image);
         
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                            njIntent.putExtra("LIST_COMMENT",comment);
         
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                           njIntent.setClassName("com.example.tsuyoshiokaprofile", "com.example.tsuyoshiokaprofile.NameJobEditActivity");
         
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                           startActivity(njIntent);
         
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                      }
         
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                   });
         
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            ```
         
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            Subの
         
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            >  text.setText(name);
         
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            >  text2.setText(job);
         
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            ーーーーーーー中略ーーーー
         
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            @Override
         
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                protected void onActivityResult (int requestCode, int resultCode, Intent intent) {
         
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                    super.onActivityResult(requestCode, resultCode, intent);
         
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                    if (requestCode == SUBACTIVITY) {
         
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                        if (resultCode == RESULT_OK) {
         
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                            text = (TextView) findViewById(R.id.textView);
         
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                            text2 = (TextView) findViewById(R.id.textView2);
         
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                            Intent njIntent = getIntent();
         
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                            Bundle extras = intent.getExtras();
         
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                            String editedName = njIntent.getStringExtra("NAME_INPUT");
         
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                            String editedJob = njIntent.getStringExtra("JOB_INPUT");
         
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            setText 
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                            text.setText(editedName);
         
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                            text2.setText(editedJob);
         
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                            Log.d("LogCat", "Log message");
         
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                        }
         
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                    }
         
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                }
         
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            ```
         
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            NameJobEditActivity
         
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            ```ここに言語を入力
         
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            package com.example.tsuyoshiokaprofile;
         
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            ーーーーーーーーーー略ーーーー
         
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            public class  
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            public class NameJobEditActivity extends AppCompatActivity{
         
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                EditText editName;
         
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                EditText editJob;
         
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                Button button;
         
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                String editedName;
         
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                String editedJob;
         
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                Intent njIntent;
         
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                String subName;
         
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                String subJob;
         
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                private static final int SUBACTIVITY = 1;
         
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                String subText;
         
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                String subText2;
         
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                int subImage;
         
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                String subComment;
         
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            protected void onCreate(Bundle savedInstanceState) {
         
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                    super.onCreate(savedInstanceState);
         
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                    setContentView(R.layout.activity_main);
         
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               @Override
         
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               public void onCreate(Bundle savedInstanceState) {
         
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                   super.onCreate(savedInstanceState);
         
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                   setContentView(R.layout.name_job_edit);
         
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                   editName = (EditText) findViewById(R.id.editName);
         
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                   editJob = (EditText) findViewById(R.id.editJob);
         
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                   button = (Button) findViewById(R.id.button);
         
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                    //アレイリストのインスタンスを作成 
         
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                    memberProfilesList = new ArrayList<>();
         
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                    memberProfilesList.add(new MemberProfile(getString(R.string.name1),getString(R.string.job1),R.drawable.human,getString(R.string.comment1)));
         
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                    memberProfilesList.add(new MemberProfile(getString(R.string.name2),getString(R.string.job2),R.drawable.human1,getString(R.string.comment2)));
         
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            -
                    
         
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            ーーー中略ーーー
         
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            -
            ```
         
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       142 
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            -
            Mainの、
         
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            -
            > memberProfilesList.add(new MemberProfile(getString(R.string.name1),getString(R.string.job1),R.drawable.human,getString(R.string.comment1)));
         
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                   button.setOnClickListener(new View.OnClickListener() {
         
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                       @Override
         
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                       public void onClick(View v) {
         
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                           //Inputされたのを取得
         
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                           editedName = editName.getText().toString();
         
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                           editedJob = editJob.getText().toString();
         
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            +
                           //保存を押すと、subに戻る。
         
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                           Intent intent = new Intent();
         
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            +
                           intent.setClassName("com.example.tsuyoshiokaprofile", "com.example.tsuyoshiokaprofile.SubActivity");
         
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            +
                           //intentに入力された文字列を詰める
         
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            +
                           intent.putExtra("NAME_INPUT",editedName);
         
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                           intent.putExtra("JOB_INPUT",editedJob);
         
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            +
                           //値を詰めたものをSubに渡して画面遷移する
         
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                           startActivityForResult(intent, SUBACTIVITY);
         
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       149 
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            -
            setTextしたい。
         
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                                                                                              at android.os.Handler.handleCallback(Handler.java:739)
         
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                                                                                              at android.os.Handler.dispatchMessage(Handler.java:95)
         
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                                                                                              at android.os.Looper.loop(Looper.java:135)
         
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                                                                                              at android.app.ActivityThread.main(ActivityThread.java:5289)
         
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                                                                                              at java.lang.reflect.Method.invoke(Native Method)
         
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                                                                                              at java.lang.reflect.Method.invoke(Method.java:372)
         
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     | 
    
         
            -
                                                                                              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
         
     | 
| 
       165 
     | 
    
         
            -
                                                                                              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
         
     | 
| 
      
 138 
     | 
    
         
            +
             
     | 
| 
      
 139 
     | 
    
         
            +
                        }
         
     | 
| 
      
 140 
     | 
    
         
            +
                    });
         
     | 
| 
      
 141 
     | 
    
         
            +
             
     | 
| 
      
 142 
     | 
    
         
            +
               }
         
     | 
| 
      
 143 
     | 
    
         
            +
             
     | 
| 
      
 144 
     | 
    
         
            +
            }
         
     | 
| 
       166 
145 
     | 
    
         
             
            ```
         
     | 
| 
       167 
     | 
    
         
            -
            Subのテキストがnull?を意味している?
         
     | 
| 
       168 
     | 
    
         
            -
            で 
     | 
| 
      
 146 
     | 
    
         
            +
            Edit画面で入力し、ボタンを押すと、デフォルトの表示になってしまうのですがなぜでしょうか。。。
         
     | 
| 
      
 147 
     | 
    
         
            +
             
     | 
| 
      
 148 
     | 
    
         
            +
            ボタンをタップするまではエラーなく動作していますが、記述は合ってますでしょうか?
         
     | 
| 
      
 149 
     | 
    
         
            +
            (startActivityForResult, getActivityResultあたりが合ってるか不安です)
         
     | 
| 
      
 150 
     | 
    
         
            +
             
     | 
| 
      
 151 
     | 
    
         
            +
            
         
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| 
      
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            +
            
         
     | 
1
追記
    
        title	
    CHANGED
    
    | 
         
            File without changes
         
     | 
    
        body	
    CHANGED
    
    | 
         @@ -12,8 +12,13 @@ 
     | 
|
| 
       12 
12 
     | 
    
         
             
                EditText editName;
         
     | 
| 
       13 
13 
     | 
    
         
             
                EditText editJob;
         
     | 
| 
       14 
14 
     | 
    
         
             
                Button button;
         
     | 
| 
      
 15 
     | 
    
         
            +
                SubActivity subActivity;
         
     | 
| 
      
 16 
     | 
    
         
            +
                String editedName;
         
     | 
| 
      
 17 
     | 
    
         
            +
                String editedJob;
         
     | 
| 
      
 18 
     | 
    
         
            +
                Intent njIntent;
         
     | 
| 
      
 19 
     | 
    
         
            +
                String subName;
         
     | 
| 
      
 20 
     | 
    
         
            +
                String subJob;
         
     | 
| 
       15 
21 
     | 
    
         | 
| 
       16 
     | 
    
         
            -
             
     | 
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       17 
22 
     | 
    
         
             
               @Override
         
     | 
| 
       18 
23 
     | 
    
         
             
               public void onCreate(Bundle savedInstanceState) {
         
     | 
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       19 
24 
     | 
    
         
             
                   super.onCreate(savedInstanceState);
         
     | 
| 
         @@ -24,43 +29,55 @@ 
     | 
|
| 
       24 
29 
     | 
    
         
             
                   button = (Button) findViewById(R.id.button);
         
     | 
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       25 
30 
     | 
    
         | 
| 
       26 
31 
     | 
    
         | 
| 
      
 32 
     | 
    
         
            +
                   editedName = editName.getText().toString();
         
     | 
| 
      
 33 
     | 
    
         
            +
                   editedJob = editJob.getText().toString();
         
     | 
| 
       27 
34 
     | 
    
         | 
| 
      
 35 
     | 
    
         
            +
                   njIntent = getIntent();
         
     | 
| 
      
 36 
     | 
    
         
            +
                   subName = njIntent.getStringExtra("LIST_NAMES");
         
     | 
| 
      
 37 
     | 
    
         
            +
                   subJob =njIntent.getStringExtra("LIST_JOBS");
         
     | 
| 
       28 
38 
     | 
    
         | 
| 
       29 
     | 
    
         
            -
                    button.setOnClickListener(new View.OnClickListener() {
         
     | 
| 
       30 
     | 
    
         
            -
                        @Override
         
     | 
| 
       31 
     | 
    
         
            -
                        public void onClick(View v) {
         
     | 
| 
       32 
39 
     | 
    
         | 
| 
       33 
     | 
    
         
            -
                           // .setText(editName);
         
     | 
| 
       34 
     | 
    
         
            -
                           // .setText(editJob);
         
     | 
| 
       35 
40 
     | 
    
         | 
| 
      
 41 
     | 
    
         
            +
                   button.setOnClickListener(new View.OnClickListener() {
         
     | 
| 
      
 42 
     | 
    
         
            +
                       @Override
         
     | 
| 
      
 43 
     | 
    
         
            +
                       public void onClick(View v) {
         
     | 
| 
      
 44 
     | 
    
         
            +
                           subActivity.text.setText(editedName);
         
     | 
| 
      
 45 
     | 
    
         
            +
                           subActivity.text2.setText(editedJob);
         
     | 
| 
      
 46 
     | 
    
         
            +
             
     | 
| 
      
 47 
     | 
    
         
            +
             
     | 
| 
       36 
48 
     | 
    
         
             
                           // ToDo ページを閉じる
         
     | 
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       37 
49 
     | 
    
         | 
| 
       38 
50 
     | 
    
         
             
                        }
         
     | 
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       39 
51 
     | 
    
         
             
                    });
         
     | 
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       40 
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            -
             
     | 
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       41 
     | 
    
         
            -
               }
         
     | 
| 
       42 
     | 
    
         
            -
             
     | 
| 
       43 
     | 
    
         
            -
            }
         
     | 
| 
       44 
52 
     | 
    
         
             
            ```
         
     | 
| 
       45 
53 
     | 
    
         
             
            Sub
         
     | 
| 
       46 
54 
     | 
    
         
             
            ```ここに言語を入力
         
     | 
| 
       47 
55 
     | 
    
         
             
            public class SubActivity extends AppCompatActivity{
         
     | 
| 
      
 56 
     | 
    
         
            +
             
     | 
| 
      
 57 
     | 
    
         
            +
                String name;
         
     | 
| 
      
 58 
     | 
    
         
            +
                String job;
         
     | 
| 
      
 59 
     | 
    
         
            +
                public TextView text;
         
     | 
| 
      
 60 
     | 
    
         
            +
                public TextView text2;
         
     | 
| 
      
 61 
     | 
    
         
            +
             
     | 
| 
       48 
62 
     | 
    
         
             
                @Override
         
     | 
| 
       49 
63 
     | 
    
         
             
                public void onCreate(Bundle savedInstanceState) {
         
     | 
| 
       50 
64 
     | 
    
         
             
                    super.onCreate(savedInstanceState);
         
     | 
| 
       51 
65 
     | 
    
         
             
                    setContentView(R.layout.sub_activity);
         
     | 
| 
       52 
66 
     | 
    
         | 
| 
      
 67 
     | 
    
         
            +
                    android.support.v7.app.ActionBar actionbar = getSupportActionBar();
         
     | 
| 
       53 
     | 
    
         
            -
             
     | 
| 
      
 68 
     | 
    
         
            +
                    actionbar.setHomeButtonEnabled(true);
         
     | 
| 
      
 69 
     | 
    
         
            +
                    actionbar.setDisplayHomeAsUpEnabled(true);
         
     | 
| 
       54 
70 
     | 
    
         | 
| 
       55 
     | 
    
         
            -
                     
     | 
| 
      
 71 
     | 
    
         
            +
                    text = (TextView) findViewById(R.id.textView);
         
     | 
| 
       56 
     | 
    
         
            -
                     
     | 
| 
      
 72 
     | 
    
         
            +
                    text2 = (TextView) findViewById(R.id.textView2);
         
     | 
| 
       57 
73 
     | 
    
         
             
                    TextView text3 = (TextView) findViewById(R.id.textView3);
         
     | 
| 
       58 
74 
     | 
    
         
             
                    ImageView imageView = (ImageView) findViewById(R.id.imageView);
         
     | 
| 
      
 75 
     | 
    
         
            +
                    ListView listView = (ListView)findViewById(R.id.listView1);
         
     | 
| 
       59 
76 
     | 
    
         | 
| 
       60 
77 
     | 
    
         
             
                    Intent sub = getIntent();
         
     | 
| 
       61 
78 
     | 
    
         | 
| 
       62 
     | 
    
         
            -
                     
     | 
| 
      
 79 
     | 
    
         
            +
                    name = sub.getStringExtra("list_names");
         
     | 
| 
       63 
     | 
    
         
            -
                     
     | 
| 
      
 80 
     | 
    
         
            +
                    job = sub.getStringExtra("list_jobs");
         
     | 
| 
       64 
81 
     | 
    
         
             
                    int image = sub.getIntExtra("list_images", R.drawable.human);
         
     | 
| 
       65 
82 
     | 
    
         
             
                    String comment = sub.getStringExtra("list_comments");
         
     | 
| 
       66 
83 
     | 
    
         | 
| 
         @@ -74,7 +91,19 @@ 
     | 
|
| 
       74 
91 
     | 
    
         
             
                    imageView.setImageResource(image);
         
     | 
| 
       75 
92 
     | 
    
         
             
                    text3.setText(comment);
         
     | 
| 
       76 
93 
     | 
    
         | 
| 
      
 94 
     | 
    
         
            +
             
     | 
| 
      
 95 
     | 
    
         
            +
                   text.setOnClickListener(new View.OnClickListener() {
         
     | 
| 
       77 
     | 
    
         
            -
             
     | 
| 
      
 96 
     | 
    
         
            +
                        @Override
         
     | 
| 
      
 97 
     | 
    
         
            +
                        public void onClick(View v) {
         
     | 
| 
      
 98 
     | 
    
         
            +
                           Intent njIntent = new Intent();
         
     | 
| 
      
 99 
     | 
    
         
            +
                           njIntent.putExtra("LIST_NAMES",name);
         
     | 
| 
      
 100 
     | 
    
         
            +
                           njIntent.putExtra("LIST_JOBS",job);
         
     | 
| 
      
 101 
     | 
    
         
            +
                           njIntent.setClassName("com.example.tsuyoshiokaprofile", "com.example.tsuyoshiokaprofile.NameJobEditActivity");
         
     | 
| 
      
 102 
     | 
    
         
            +
                           startActivity(njIntent);
         
     | 
| 
      
 103 
     | 
    
         
            +
             
     | 
| 
      
 104 
     | 
    
         
            +
             
     | 
| 
      
 105 
     | 
    
         
            +
                      }
         
     | 
| 
      
 106 
     | 
    
         
            +
                   });
         
     | 
| 
       78 
107 
     | 
    
         
             
            ```
         
     | 
| 
       79 
108 
     | 
    
         
             
            Subの
         
     | 
| 
       80 
109 
     | 
    
         
             
            >  text.setText(name);
         
     | 
| 
         @@ -117,4 +146,23 @@ 
     | 
|
| 
       117 
146 
     | 
    
         | 
| 
       118 
147 
     | 
    
         
             
            editNameに入力されたものと、
         
     | 
| 
       119 
148 
     | 
    
         
             
            editJobに入力されたものを
         
     | 
| 
       120 
     | 
    
         
            -
            setTextしたい。
         
     | 
| 
      
 149 
     | 
    
         
            +
            setTextしたい。
         
     | 
| 
      
 150 
     | 
    
         
            +
             
     | 
| 
      
 151 
     | 
    
         
            +
            エラー
         
     | 
| 
      
 152 
     | 
    
         
            +
            ```ここに言語を入力
         
     | 
| 
      
 153 
     | 
    
         
            +
            Process: com.example.tsuyoshiokaprofile, PID: 2204
         
     | 
| 
      
 154 
     | 
    
         
            +
                                                                                          java.lang.NullPointerException: Attempt to read from field 'android.widget.TextView com.example.tsuyoshiokaprofile.SubActivity.text' on a null object reference
         
     | 
| 
      
 155 
     | 
    
         
            +
                                                                                              at com.example.tsuyoshiokaprofile.NameJobEditActivity$1.onClick(NameJobEditActivity.java:45)
         
     | 
| 
      
 156 
     | 
    
         
            +
                                                                                              at android.view.View.performClick(View.java:4776)
         
     | 
| 
      
 157 
     | 
    
         
            +
                                                                                              at android.view.View$PerformClick.run(View.java:19793)
         
     | 
| 
      
 158 
     | 
    
         
            +
                                                                                              at android.os.Handler.handleCallback(Handler.java:739)
         
     | 
| 
      
 159 
     | 
    
         
            +
                                                                                              at android.os.Handler.dispatchMessage(Handler.java:95)
         
     | 
| 
      
 160 
     | 
    
         
            +
                                                                                              at android.os.Looper.loop(Looper.java:135)
         
     | 
| 
      
 161 
     | 
    
         
            +
                                                                                              at android.app.ActivityThread.main(ActivityThread.java:5289)
         
     | 
| 
      
 162 
     | 
    
         
            +
                                                                                              at java.lang.reflect.Method.invoke(Native Method)
         
     | 
| 
      
 163 
     | 
    
         
            +
                                                                                              at java.lang.reflect.Method.invoke(Method.java:372)
         
     | 
| 
      
 164 
     | 
    
         
            +
                                                                                              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
         
     | 
| 
      
 165 
     | 
    
         
            +
                                                                                              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
         
     | 
| 
      
 166 
     | 
    
         
            +
            ```
         
     | 
| 
      
 167 
     | 
    
         
            +
            Subのテキストがnull?を意味している?
         
     | 
| 
      
 168 
     | 
    
         
            +
            でも、NameJobActivityを追加する前、Sub単体では問題なく動作していました。
         
     |