Program – Page 3 – Master da Web

Category: Program

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Android Loading ProgressDialog

Lucas
February 24, 2017

public class LoadingHelper { private static ProgressDialog progress; public void run(Context context, final CallbackInterface callback){ progress = ProgressDialog.show(context, “Carregando”, “Por favor, aguarde :D”, true); new Thread(new Runnable() { @Override public void run() { if(callback != null) callback.run(); } }).start(); } public static void dismiss(){ progress.dismiss(); } public interface CallbackInterface { public void run (); }

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Activity Context VS getApplicationContext(): When to use ?

Lucas
January 16, 2017

Any Android developer has encountered the problem of having to use the Activity’s own reference instead of using getApplicationContext(). Both Activity and getApplicationContext() are instances of Context, but the difference is that Activity has the context of the Activity itself, and getApplicationContext() is the Context of the Application. An Android application has several types of

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Android: Using onActivityResult(), startActivityForResult() and setResult()

Lucas
January 15, 2017

It is very common, when starting a new activity, to want to receive the data from that other activity at the end of the activity and then execute an action. Let’s look at an example: Let’s suppose I have a ListProducts activity and AddEditProduct. Within the ListProducts activity I click on the button to add