Type casting with reference to resources

Question

In Activity, created a variable

private TextView txtTitle;

and in the onCreate() method I refer to it like this

 txtTitle = (TextView) findViewById(R.id.txtTitle);

Studio gray displays the type to which I cast the variable. Those. now it is not necessary to write (TextView) ?

post_zeew post_zeew 21.2k 3 gold marks 20 silver marks 34 bronze marks · Accepted Answer · 2017-11-20T06:53:06

In the SDK 26, the signature of the findViewById(...) method has changed. Previously, she was like this:

 public View findViewById(int id);

and, accordingly, it was necessary to explicitly cast the type. In the SDK 26+, the method is as follows:

 public <T extends View> T findViewById(int id);

and type is not necessary.

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