Question

I am writing a phone dialer app for android. I created a layout for keypad, which contains a TextView and 10 buttons. Buttons are as keys for 10 digits(0 to 9) and TextView is for displaying the number according to keys pressed.

In my app, i am appending the text (“0” or “1”, etc.) to the TextView for each button pressed. If i pressed the buttons 1, 2, 3 then the text on TextView is 123.
The problem is, let’s take the screen is in landscape mode and TextView contains 123, if i turn it, in portrait mode no text on TextView.

Please Help Me Regarding this.

Answer 1

Please check on orientation change, on create method is called, which requires all the views to be created again, so you need to use one of the following methods:

1. use onSavedInstance method and save the states of components/views to bundle.

2. Just use following flag true in your manifest file in activity tag android:configChanges=”keyboardHidden|orientation”. like below:

   <activity android:name=".SampleActivity" android:label="@string/app_name"
       android:configChanges="keyboardHidden|orientation">
       ...
   </activity>