Disable ui component by default, enable it at BlockCanary.install()

[Piasy]

1. move blockcanary-ui into blockcanary-android;
2. then we could disable ui component by default, enable it at BlockCanary.install();
3. this feature let us compile blockcanary-android into release build but not showing BlockActivity, because in some case, we could not use debugCompile and releaseCompile at the same time;
4. rename blockcanary-no-op to blockcanary-android-no-op, like LeakCanary;
5. not depends on modules via maven, it won't affect maven publish;

[markzhai]

The reason I separate blockcanary-android and blockcanary-ui is to not compile UI related codes if we don't need it like in release package.

Not quite sure what do you mean by we could not use debugCompile and releaseCompile at the same time, the way to use blockcanary is various, and developer can assemble by themselves.

[Piasy]

For clean release build, no-op is enough, right?

I use facebook BUCK build, and generate BUCK file automatically, my BUCK generator could not utilize the debugCompile and releaseCompile option, so I plan to ship blockcanary-android into release build, but not showing the BlockActivity entrance.

If you don't want to accept this pr, I think there are two options for me: improve my BUCK generator, or create my customized block canary build.

[markzhai]

@Piasy

    // if set true, notification will be shown, else only write log file
    @Override
    public boolean isNeedDisplay() {
        return BuildConfig.DEBUG;
    }

Have you tried to use this context configuration, this can prevent showing the BlockActivity entrance?

[Piasy]

isNeedDisplay only control whether show notification, right? If we do not disable the DisplayBlockActivity component in manifest or code by default, the block icon will showed in launcher, because it's another entrance activity.

[markzhai]

@Piasy I see, maybe I removed the setComponentEnabledSetting sometime... This PR is accepted as I found separate this library into too many modules makes it hard to understand for developers.

Thanks

[Piasy]

Thanks! Hope to see a new version in maven. :)