October 2017
Intermediate to advanced
294 pages
6h 49m
English
Content preview from Building Android UIs with Custom Views
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The impact of not following the best practices
One of the recommendations we have been giving during these last chapters is to avoid allocating objects in the onDraw() method. But what will happen if we start allocating objects?
Let's create a simple custom view and allocate an object on purpose so we can evaluate the result when running the app:
package com.packt.rrafols.draw; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.Path; import android.graphics.Rect; import android.graphics.Region; import android.util.AttributeSet; import android.view.GestureDetector; import android.view.MotionEvent; import ...
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