Manually install Android SDK, disable UI tests, build tools 23.0.3 → 26.0.2.

[artem-zinnatullin]

• Default way of SDK installation overflows Travis log limit, see Fix Travis log overflow, update Android SDK tools 25.2.3 → 3859397. pushtorefresh/storio#824
• Temporary disable UI tests on CI see Run instrumentation tests on Firebase. #220
• Didn't update versions of Android SDK components except build-tools (see below) to minimize scope of PR, will do in a separate PR

Had to update build-tools version, otherwise build crashed (I suppose language: android took care of system dependencies for old version of aapt):

:app:mergeDebugResourcesjava.io.IOException: Cannot run program "/home/travis/android-sdk/build-tools/23.0.3/aapt": error=2, No such file or directory
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
	at com.android.builder.png.AaptProcess$Builder.start(AaptProcess.java:167)
	at com.android.builder.png.QueuedCruncher$1.creation(QueuedCruncher.java:116)
	at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:203)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: error=2, No such file or directory
	at java.lang.UNIXProcess.forkAndExec(Native Method)
	at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)
	at java.lang.ProcessImpl.start(ProcessImpl.java:134)
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
	... 4 more

@vanniktech PTAL

[codecov-io]

Codecov Report

Merging #224 into master will decrease coverage by 41.06%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             master     #224       +/-   ##
=============================================
- Coverage     77.89%   36.83%   -41.07%     
- Complexity       41       44        +3     
=============================================
  Files            39       39               
  Lines           561      524       -37     
  Branches         27       27               
=============================================
- Hits            437      193      -244     
- Misses           92      322      +230     
+ Partials         32        9       -23

Impacted Files	Coverage Δ	Complexity Δ
...atters/developer_settings/DevMetricsProxyImpl.java	0% <0%> (-100%)	0% <0%> (ø)
...mzin/qualitymatters/models/PicassoImageLoader.java	0% <0%> (-100%)	0% <0%> (ø)
...rs/developer_settings/DeveloperSettingsModule.java	0% <0%> (-100%)	0% <0%> (-10%)
...ava/com/artemzin/qualitymatters/api/ApiModule.java	0% <0%> (-100%)	0% <0%> (-3%)
...emzin/qualitymatters/ui/adapters/ItemsAdapter.java	0% <0%> (-100%)	0% <0%> (ø)
...com/artemzin/qualitymatters/ApplicationModule.java	0% <0%> (-100%)	0% <0%> (-7%)
...artemzin/qualitymatters/network/NetworkModule.java	0% <0%> (-100%)	0% <0%> (-2%)
...in/qualitymatters/performance/AsyncJobsModule.java	0% <0%> (-100%)	0% <0%> (-2%)
...qualitymatters/other/EntityTypeAdapterFactory.java	0% <0%> (-100%)	0% <0%> (ø)
...alitymatters/network/OkHttpInterceptorsModule.java	0% <0%> (-100%)	0% <0%> (-4%)
... and 14 more

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[artem-zinnatullin]

chmod +x, + separate invocation of bash didn't pass ANDROID_HOME declared above (that's expected bash behavior)

[artem-zinnatullin]

I can't remember reason why did we run clean in separate invocation

[artem-zinnatullin]

Well, UI tests indeed cover lots of app code that works with Android framework

[vanniktech]

Interesting