Only load the keystore properties file (keystore.properties) if in release build config (assembleRelease).
It should not be loaded when in debug build config (assembleDebug).

See blog : https://www.timroes.de/2013/09/22/handling-signing-configs-with-gradle/

Add cache for Gradle wrapper and other parts (dependencies).

See

• https://docs.travis-ci.com/user/languages/android/#Caching
• https://docs.travis-ci.com/user/caching/

As an alternative to solution to #2

See :

• https://developer.chrome.com/multidevice/android/customtabs

Extract :

What are Chrome Custom Tabs?
App developers face a choice when a user taps a URL to either launch a browser, or build their own in-app browser using WebViews.

Both options present challenges — launching the browser is a heavy context switch that isn't customizable, while WebViews don't share state with the browser and add maintenance overhead.

Chrome Custom Tabs give apps more control over their web experience, and make transitions between native and web content more seamless without having to resort to a WebView.

Try to lower minSdkVersion 19 -> 18
https://developer.android.com/about/versions/android-4.3.html

General : https://developer.android.com/guide/topics/manifest/uses-sdk-element.html

Revision 27.0.0 Release : https://developer.android.com/topic/libraries/support-library/revisions.html#27-0-0

See #21

See Lint :
Target SDK attribute is not targeting latest version

Log :

When your application runs on a version of Android that is more recent than your targetSdkVersion specifies that it has been tested with, various compatibility modes kick in. This ensures that your application continues to work, but it may look out of place. For example, if the targetSdkVersion is less than 14, your app may get an option button in the UI.

To fix this issue, set the targetSdkVersion to the highest available value. Then test your app to make sure everything works correctly. You may want to consult the compatibility notes to see what changes apply to each version you are adding support for: http://developer.android.com/reference/android/os/Build.VERSION_CODES.html
More info: http://developer.android.com/reference/android/os/Build.VERSION_CODES.html
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "OldTargetApi" as explained in the Suppressing Warnings and Errors section.

Reference :

• https://developer.android.com/guide/topics/manifest/uses-sdk-element.html

Release : https://developer.android.com/studio/releases/index.html#3-0-0

Todo :

• Update Android Plugin for Gradle 3.0.0 - see Android Plugin for Gradle
• Use Google's Maven repository (see at Build dependencies)

See also blog : Android Studio 3.0

See https://developer.android.com/studio/releases/gradle-plugin.html#updating-gradle

The content of gradle/wrapper/gradle-wrapper.properties has to be updated to version 4.0.

Revision 27.0.2 Release : https://developer.android.com/topic/libraries/support-library/revisions.html#27-0-2

See #32

How to add a library :
https://developer.android.com/topic/libraries/support-library/setup.html#add-library
The Google Maven repository needs to be configured as remote, as explained.

Lib : https://developer.android.com/topic/libraries/support-library/revisions.html

Fix deprecated in build.gradle

Log :

Configure project :app
Configuration 'compile' in project ':app' is deprecated. Use 'implementation' instead.
Configuration 'androidTestCompile' in project ':app' is deprecated. Use 'androidTestImplementation' instead.
Configuration 'testCompile' in project ':app' is deprecated. Use 'testImplementation' instead.
The CompileOptions.bootClasspath property has been deprecated and is scheduled to be removed in Gradle 5.0. Please use the CompileOptions.bootstrapClasspath property instead.

See :

• https://docs.gradle.org/4.2/release-notes.html#deprecations
• https://docs.gradle.org/4.3/release-notes.html#deprecations
• https://docs.gradle.org/current/javadoc/deprecated-list.html

Check releases here : https://gradle.org/releases/
v4.6 released on : https://github.com/gradle/gradle/milestone/58

https://developer.android.com/studio/releases/platform-tools.html

See #24

https://developer.android.com/studio/releases/platform-tools.html

See also #4

Check releases here : https://gradle.org/releases/
v4.4 released on : https://github.com/gradle/gradle/milestone/43

Release : https://developer.android.com/studio/releases/index.html#3-1-0

Todo :

• Update Android Plugin for Gradle 3.1.0

See also blog : Android Studio 3.1

See #23

See also #19

Check releases here : https://gradle.org/releases/
https://github.com/gradle/gradle/releases/tag/v4.3.1

See #12 & #16

• Revision 26.1.0 Release

Revision 27.1.1 Release : https://developer.android.com/topic/libraries/support-library/revisions.html#27-1-1

See #45

Revision 27.1.0 Release : https://developer.android.com/topic/libraries/support-library/revisions.html#27-1-0

See #37

For example, with Retrofit,
@Query("n") int size
could be replaced by
@Query("n") Integer size

See : https://stackoverflow.com/questions/20382253/dynamically-add-optional-parameters-to-api-requests#20493223

By default Retrofit handles nulls correctly for all null query parameters

Try to change dist : trusty

See : https://blog.travis-ci.com/2017-08-31-trusty-as-default-status

https://developer.android.com/studio/releases/platform-tools.html

See #13

Use Travis CI.

See Building an Android Project

URL :
https://registry.hub.docker.com/v2/repositories/library/centos/tags/

HTTP GET
No auth required

Pagination params :

• page_size (int)
• page (int)

Details on tag :
https://registry.hub.docker.com/v2/repositories/library/centos/tags/<tag_name>

See also #4

Check releases here : https://gradle.org/releases/
v4.0.2 released on Jul 26, 2017

See also #20

Check releases here : https://gradle.org/releases/
v4.5 released on : https://github.com/gradle/gradle/milestone/50

Actual ImageWebViewActivity embed a WebView.

It would be nice to have another option (via menu item) to open this URL in the browser or in Chrome.
Like in GMail app for example.

Example code (from https://developer.android.com/reference/android/webkit/WebView.html) :

public void openUrlInBrowser(Uri uri)
{
    Objects.requireNonNull(uri);
    Intent intent = new Intent(Intent.ACTION_VIEW, uri);

    startActivity(intent);
}

See also :

• https://developer.android.com/reference/android/webkit/WebView.html#getWebViewClient()
• https://developer.android.com/reference/android/webkit/WebView.html#getWebChromeClient()

References

See : Buttons: Floating Action Button (Material Design)
Included in Android Design Support Library

Tasks

• Use VectorDrawable for FAB

Design :

Data "layer" no more returned.
So it can be deprecated.

REST API :

• List repository tags : GET /v1/repositories/(namespace)/(repository)/tags

See also https://docs.docker.com/registry/deprecated/

See #12

Try to lower minSdkVersion 18 -> 17
https://developer.android.com/about/versions/android-4.2.html

General : https://developer.android.com/guide/topics/manifest/uses-sdk-element.html

Update library : com.fasterxml.jackson.core:jackson-databind

See https://github.com/FasterXML/jackson/wiki/Jackson-Release-2.9.5

Check releases here : https://gradle.org/releases/
v4.7 released on : https://github.com/gradle/gradle/milestone/61

See : https://developer.android.com/studio/write/java8-support.html

Be careful, there are still some limitations.

Warning : Usage of Date / Time API is possible starting from API 26 (Oreo).
For example : https://developer.android.com/reference/java/time/LocalDateTime.html

https://developer.android.com/studio/releases/build-tools.html

See #36

In addition to the image url (docker hub), add the image description when using share feature.

See also #4

Check releases here : https://gradle.org/releases/
v4.3 released on : https://github.com/gradle/gradle/milestone/39

Give a nice file name including the version, instead of app-debug.apk or app-release.apk.

For example : android-docker-search-1.0.0-release.apk

Usually, these libraries are stored in a Maven local repository, installed via SDK Manager -> Android Support Repository (current rev = 47.0.0).

How to add a library :
https://developer.android.com/topic/libraries/support-library/setup.html#add-library
The Google Maven repository needs to be configured as remote, as explained.

See also potential problems :

• Could not find com.android.support:appcompat-v7:25.3.1

Update library : com.squareup.retrofit2:retrofit

See https://github.com/square/retrofit/blob/master/CHANGELOG.md#version-240-2018-03-14

See also #4

Check releases here : https://gradle.org/releases/
v4.1 released on Aug 07, 2017

Fix actual RelativeLayout disposition containing TextViews

• Test with image : microsoft/dotnet containing long tag names

Sometimes freezes when searching dialog is displayed (with split screen on Nougat)...

See https://developer.android.com/guide/topics/ui/multi-window.html

Maybe use android:resizeableActivity="false" until it works.

Revision 27.0.1 Release : https://developer.android.com/topic/libraries/support-library/revisions.html#27-0-1

See #27

https://developer.android.com/studio/releases/build-tools.html

See #33

Check releases here : https://gradle.org/releases/

See also #4

Check releases here : https://gradle.org/releases/
v4.2 released on Sep 20, 2017

Add a right padding of 2dp