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Bearbeitungen
Android Training/Starting Another Activity/en: Unterschied zwischen den Versionen
Android Training/Starting Another Activity/en (bearbeiten)
Version vom 20. Dezember 2015, 21:27 Uhr
, 20. Dezember 2015Neue Version von externer Quelle importiert
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#: For the next activity to query the extra data, you should define the key for your intent's extra using a public constant. It's generally a good practice to define keys for intent extras using your app's package name as a prefix. This ensures the keys are unique, in case your app interacts with other apps. | #: For the next activity to query the extra data, you should define the key for your intent's extra using a public constant. It's generally a good practice to define keys for intent extras using your app's package name as a prefix. This ensures the keys are unique, in case your app interacts with other apps. | ||
# In the <code>sendMessage()</code> method, to finish the intent, call the <code>startActivity()</code> method, passing it the<code>Intent</code> object created in step 1. | # In the <code>sendMessage()</code> method, to finish the intent, call the <code>startActivity()</code> method, passing it the <code>Intent</code> object created in step 1. | ||
With this new code, the complete <code>sendMessage()</code> method that's invoked by the Send button now looks like this: | With this new code, the complete <code>sendMessage()</code> method that's invoked by the Send button now looks like this: | ||
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} | } | ||
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#: '''Note:''' If you are using an IDE other than Android Studio, your project does not contain the<code>activity_display_message</code> layout that's requested by <code>[http://developer.android.com/reference/android/app/Activity.html#setContentView(android.view.View) setContentView()]</code>. That's OK because you will update this method later and won't be using that layout. | #: '''Note:''' If you are using an IDE other than Android Studio, your project does not contain the <code>activity_display_message</code> layout that's requested by <code>[http://developer.android.com/reference/android/app/Activity.html#setContentView(android.view.View) setContentView()]</code>. That's OK because you will update this method later and won't be using that layout. | ||
# To your <code>strings.xml</code> file, add the new activity's title as follows: | # To your <code>strings.xml</code> file, add the new activity's title as follows: | ||
#: <syntaxhighlight lang="xml"> | #: <syntaxhighlight lang="xml"> | ||