I have two android activity. Activity1 is a input form.In this activity have a manyTextEditor and ImageView. but one of many TextEditor need go to Activity2 for fill a data and return a data to Activity1.
But when the user returns to Activity1 a value in TextEditor of user has fill it before go to activity2 it be lost.
how to still a value of TextEditor when go to another Activity.
thank for any idea.
Here is official guide:
http://developer.android.com/training/basics/activity-lifecycle/recreating.html
You should store text edit value inside Bundle in:
protected void onSaveInstanceState (Bundle outState)
and restore it from savedInstanceState bundle in:
protected void onRestoreInstanceState (Bundle savedInstanceState)
[edit]
actually android should save your view content using above mechanism
when you go to next activity, store that value in sharedpreferences and when again back to previous activity retrieve it from there and put that in edittext.
Writing it down in code as suggested by Simple Plan
public class MainActivity extends Activity {
EditText ed;
Button bt;
private String str = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ed = (EditText) findViewById(R.id.editText1);
bt = (Button) findViewById(R.id.button1);
bt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent i = new Intent (MainActivity.this, First.class);
startActivity(i);
}
});
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
str = ed.getText().toString();
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
ed.setText(str);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
OK. I can solved my problem.
I use a startActivityForResult() function to get user data from subActivity and return result back to main activity this ways a value in TextEditor of user has fill it before go to activity2 It doesn't gone
Referrence:How to pass integer from one activity to another?
PS. Thank for marcin_j answer it as a new knowledge for me and thank for any comment and answer
