android development #6 - brmlab › _media › event › android_6.pdf · android project...

ANDROID DEVELOPMENT

#6

@brmlab

středa, 27. března 13

UI LAYOUTS

LinearFrameTableRelativeGrid


VIEWGROUP

Can contain childrenSuperType for Layouts and ContainersCan contain Views and/or ViewGroups

Layouts can contain Layouts


LAYOUT XML FILE

Root element is singleViewGroupView

Must be XML file ( res/layouts/my_layout.xml )Can be provided multiple times (resources)

-xhdpi, -en-rGB, -sw600dp, -xlarge


LAYOUT PARAMS

layout_widthlayout_heightlayout_weight (of this view in parent view)layout_margin (outer spacing)layout_gravity (positioning in parent view)


OTHERPARAMS

gravity (inner content positioning)padding (inner spacing)weightSum (sum of all children layout_weight)id ( @id/my_id, @+id/my_id )


WEIGHT

ViewGroup {weightSum:4}View {weight:1}View {weight:1}View {weight:1}View {weight:1}


LAYOUTGRAVITY


(CONTENT) GRAVITY


LINEARLAYOUT


FRAMELAYOUT


TABLELAYOUT


RELATIVELAYOUT


VIEWSPROGRAMATICALLY

ViewGroup extends ViewViewGroup.addView(View child)

LayoutParamsLinearLayout, FrameLayout, RelativeLayoutFrameLayout.LayoutParams

View.setLayoutParams(LayoutParams params)


VIEWS VISIBILITY

View.setVisibility(int)View.VISIBLE - defaultView.GONE - not using spaceView.INVISIBLE - just hidden, takes space


VIEWGROUPCHILDREN

View.findViewById(int)returns View, have to be re-typedeg. (TextView) findViewById(R.id.text)

searching through activity layout viewsearching through LayoutInflater result


VIEWGROUP CHILDREN


MAVENLATEST 3.0.5

Apache License 2.0Java toolDependency managementProject inheritancePackaging, Testing, Deploy, InstallPlugins / Modules for version controlAndroid module (build, run, package)


MAVEN INTEGRATION

Eclipse m2e pluginpom.xmlapklib not supported yet

apklib includes android resourcesjar dependencies supported


MAVEN PACKAGES

POM - Directory hierarchy with pom filesWAR - J2EE distribution (Sun)APK - Distribution (signed, unsigned)JAR - LibrariesAPKLIB - Android specific, includes resources


MAVENANDROID

Goalsandroid:cleanandroid:deploy / :redeployandroid:runandroid:devices (adb list-devices)android:emulator-*android:lintandroid:apk


MAVEN ECLIPSE

Maven Eclipse plugin

eclipse:eclipseeclipse:cleaneclipse:to-maveneclipse:configure-workspace


ANDROID PROJECT

Dependencies can be mixedMaven/libsEclipse classpath dependency (android.jar)referenced Android library projects

Must configure exporting librariescopying them to built APK archive


WHY MAVEN

Version dependencylibrary version update is handled

Hierarchy dependencylibrary that refers to library that refers ...

Automatic downloading Javadoc and Sources


WHY NOT MAVEN

APKLIB is not supportedEvery library providing resources =>

imageslayoutsdrawables

=> is not usable with Maven yeteg. ActionBarSherlock


android development #6 - brmlab › _media › event › android_6.pdf · android project...

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