Get EditText value from sub Activity

Question

How to get EditText value from Sub-Activity? With a condition that in Sub-Activity I click back icon on the phone there's no error? This is my Sub-Activity code

public class SBooksSearch extends Activity {
private EditText mTextSearch; 
@Override
protected void onCreate(Bundle savedInstanceState) {
 // TODO Auto-generated method stub
 super.onCreate(savedInstanceState);  
 setContentView(R.layout.sbooks_search); 

 mTextSearch = (EditText)findViewById(R.id.edit_search);  
 Button searchButton = (Button)findViewById(R.id.btn_search);  

 searchButton.setOnClickListener(new View.OnClickListener(){
  public void onClick(View v){    
   Intent data = new Intent();    
   data.putExtra(SBooksDbAdapter.KEY_TITLE_RAW, mTextSearch.getText().toString());   
   setResult(RESULT_OK, data);
   finish();
  }
 });
} 

@Override
protected void onSaveInstanceState(Bundle outState){
 super.onSaveInstanceState(outState);  
}
@Override
protected void onPause(){
 super.onPause();

}
@Override
protected void onResume(){
 super.onResume();  
}

}

This is my Activity-Result

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent){
 super.onActivityResult(requestCode, resultCode, intent);  
 switch(requestCode){
 case ACTIVITY_SEARCH:
  Bundle extras = getIntent().getExtras();
        mTitleRaw = extras != null ? extras.getString(SBooksDbAdapter.KEY_TITLE_RAW) : null;         
        if(mTitleRaw!=null){
         Cursor cursor = mDbHelper.searchData(mTitleRaw);

   String[] from = new String[]{ SBooksDbAdapter.KEY_ROWID,
     SBooksDbAdapter.KEY_TITLE, SBooksDbAdapter.KEY_LYRICS };
   int[] to = new int[]{ R.id.id, R.id.title, R.id.lyrics };
   SimpleCursorAdapter adapter = 
    new SimpleCursorAdapter(this, R.layout.sbooks_row, cursor, from, to );
   setListAdapter(adapter);
        }  

  break;
 }

}

Answer 1

First of all, you shouldn't be attempting any sort of action if the user hits the "back" button. It's a global button that means "get me out of here now", and it's usually understood that the user wants nothing other than going back one screen to occur as a result of that.

So what you need to do is in your searchButton.setOnClickListener, in the onClick, create an empty Intent like so:

Intent data = new Intent();

Then you need to be adding the value of your EditText as an extra value, like so:

data.putExtra(SBooksDbAdapter.KEY_TITLE_RAW, mTextSearch.getText().toString());

Finally, include this intent in your setResult call:

setResult(RESULT_OK, data);

In your onActivityResult pull the value out of the intent like you're already doing and you should be fine.