Android Custom View 102 (Part 7)

Tips and tricks of drawsing text

Guowei Lv

6 minute read

Drawing text can be tricky at times, let’s look at some examples. First, let’s look at some terminologies used here. Some most important keywords are: baseline: the line where the text “sits on” ascent: The recommended distance above the baseline for singled spaced text descent: The recommended distance below the baseline for singled spaced text top: The maximum distance above the baseline for the tallest glyph in the font at a given text size bottom: The maximum distance below the baseline for the lowest glyph in the font at a given text size A picture is worth 1000 words:

What is PECS

PECS explained

Guowei Lv

2 minute read

You: Master, I heard this PECS in the JAVA world. But I’m deeply puzzled by it. Master: Do you know what it stands for? You: Producer Extends Consumer Super? Master: In order to understand it, you shall stop thinking about what these words mean, it’s not helpful at all. Just follow my questions. You: Yes, Master. Please start. Master: There are plants, then there are fruits, then there are apples and pears.

Realm Guide: From Zero to Give Up

Curated list of realm learning resources

Guowei Lv

1 minute read

You know nothing about realm, then watch this video first -> Now you should know the basic basics, then take a look at the official doc. You think you know it all until you try to combine with RxJava. Now you are super puzzled, look at some examples with full source code. Finally you realize that you have to do all this in clean architecture and decided to give up by turning Realm into a NoSQL version SQLite.