show alert dialog through button android -

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I'm trying to show a warning dialog while clicking a button 

  Previous .setOnClickListener (click on the New View.OnClickListener () {@Override Public Zero (see View) {AlertDialog.Builder answerAlert = New AlertDialog.Builder (this);}});

But I received an error in this line 

  alerts. Builder NorthArtter = New AlertDownloadsBolder (this);

what said 

  constructor algorithm. Builder (New view. Onclick Lester () {}) is undefined

How do anyone know how to fix it? Thanks

alertdoglog gets in context You have used this in your code on constructor instead. ClickClickListenner instead of you yourActivity.this 

  Previous .setOnClickListener (New View.OnClickListener () should write {@Override click on Public Zoom (see View) {AlertDialog.Builder answerAlert = New AlertDialog.Builder (YourActivity.This);}});

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