android - 返回android时将结果从当前 Activity 传递给第一个 Activity

Question

我有两个类 NoteEdit 和 NoteView，在 NoteView 类中，我按下编辑按钮，它将我引导到 NoteEidt 类，假设我想将我更新的正文信息传递给 NoteView，并且之前的正文信息应该已经在 NoteView 界面中更新，但它仍然保持不变，这是我的代码的一部分，请帮忙，谢谢!

笔记编辑类:

     Intent resultIntent = new Intent(NoteEdit.this, NoteView.class);
           String body = mBodyText.getText().toString()  
         resultIntent.putExtra(body, true);   

笔记 View 类

      public boolean onOptionsItemSelected(MenuItem item) {

          switch (item.getItemId()) {
    case DIARY_EDIT:
         Intent i = new Intent(NoteView.this, NoteEdit.class);
         i.putExtra(NotesDbAdapter.KEY_ROWID, mRowId);
         startActivityForResult(i, ACTIVITY_VIEWERS);
         break;
          }  }

         @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
        super.onActivityResult(requestCode, resultCode, intent);
        switch(requestCode) {   
        case (ACTIVITY_VIEWERS) 
        : {      
            if (resultCode == Activity.RESULT_OK)
            {    
                Bundle extras = getIntent().getExtras();
                 newText =extras.getString(NotesDbAdapter.KEY_BODY);  
                // TODO Update your TextView.   
                }       
            break;    
            }    
        }  


    }   

Answer 1

现在使用此代码。

笔记编辑类:

Intent resultIntent = new Intent(NoteEdit.this, NoteView.class);
       String body = mBodyText.getText().toString()  
     resultIntent.putExtra(NotesDbAdapter.KEY_BODY, body); 
     setResult(RESULT_OK,resultIntent);

笔记 View 类:

public boolean onOptionsItemSelected(MenuItem item) {

      switch (item.getItemId()) {
case DIARY_EDIT:
     Intent i = new Intent(NoteView.this, NoteEdit.class);
     i.putExtra(NotesDbAdapter.KEY_ROWID, mRowId);
     startActivityForResult(i, ACTIVITY_VIEWERS);
     break;
      }  }

     @Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);
    switch(requestCode) {   
    case ACTIVITY_VIEWERS 
    : {      
        if (resultCode == RESULT_OK)
        {    
            Bundle extras = intent().getExtras();
             newText =extras.getString(NotesDbAdapter.KEY_BODY);  
            // TODO Update your TextView.   
            }       
        break;    
        }    
    }  


}