Scala Context类代码示例

//设置package包名称以及导入依赖的类
package $package$.activity


import $package$.api.UiService
import $package$.model.Ticker
import android.content.{Intent, Context}
import android.view.View
import android.widget.{TextView, ProgressBar, LinearLayout}
import macroid.FullDsl._
import macroid._
import android.app.Activity
import android.os.Bundle

class MainActivity extends Activity with Contexts[Activity] with MainActivityView with UiService {

  override def onCreate(b: Bundle): Unit = {
    super.onCreate(b)
    setTitle("Hello world, $name$!")
    setContentView(ui.get)
    update
  }

  def update = api(_.pubticker("btcusd")) mapUi updateView

  def updateView(t: Ticker) = runUi(
    lastPriceSlot <~ text("Whoa! Bitcoin price is " + t.last_price)
  )
}

trait MainActivityView {
  var lastPriceSlot = slot[TextView]

  def ui(implicit context: ActivityContext): Ui[LinearLayout] = {
    l[LinearLayout](
      w[TextView] <~ wire(lastPriceSlot)
    )
  }

} 

//设置package包名称以及导入依赖的类
package com.mishiranu.instantimage.util

import java.io.File

import android.content.Context
import android.webkit.MimeTypeMap

object FileManager {
  def cleanup(context: Context): Unit = {
    val time = System.currentTimeMillis - 24 * 60 * 60 * 1000
    Option(context.getFilesDir.listFiles).getOrElse(Array())
      .filter(_.lastModified < time)
      .foreach(_.delete())
  }

  def obtainSimpleFileName(originalUriString: String): String = {
    System.currentTimeMillis + "." + Option(originalUriString).map { uriString =>
      val index = uriString.lastIndexOf('.')
      if (index >= 0 && uriString.indexOf('/', index) == -1) uriString.substring(index + 1) else null
    }.filter(e => e != null && !e.isEmpty && e.length <= 5).getOrElse("jpeg")
  }

  case class FileItem(contentId: Int, displayName: String, file: File) {
    def mimeType: String = {
      val extension = {
        val index = displayName.lastIndexOf('.')
        if (index >= 0) displayName.substring(index + 1) else "jpeg"
      }
      Option(MimeTypeMap.getSingleton.getMimeTypeFromExtension(extension))
        .filter(_ != null)
        .filter(_.isEmpty)
        .getOrElse("image/jpeg")
    }
  }

  def obtainFile(context: Context, originalUriString: String, contentId: Int): FileItem = {
    val filesDir = context.getFilesDir
    filesDir.mkdirs()
    val displayName = contentId + "-" + obtainSimpleFileName(originalUriString)
    FileItem(contentId, displayName, new File(filesDir, displayName))
  }

  def listFiles(context: Context): List[FileItem] = {
    case class Data(file: File, splitted: Array[String])
    Option(context.getFilesDir.listFiles).getOrElse(Array())
      .map(f => Data(f, f.getName.split("-")))
      .filter(_.splitted != null)
      .filter(_.splitted.length == 2)
      .map(d => FileItem(d.splitted(0).toInt, d.splitted(1), d.file)).toList
  }

  def findFile(context: Context, contentId: Int): Option[FileItem] = {
    listFiles(context).find(_.contentId == contentId)
  }
} 

//设置package包名称以及导入依赖的类
package com.mishiranu.instantimage.graphics

import android.content.Context
import android.graphics.{Canvas, Color, Paint}

class BorderSelectorDrawable(context: Context) extends SelectorDrawable {
  import BorderSelectorDrawable._

  private val paint = new Paint(Paint.ANTI_ALIAS_FLAG)
  paint.setColor(Color.BLACK)
  private val density = context.getResources.getDisplayMetrics.density

  private var selected = false

  override def setSelected(selected: Boolean, animated: Boolean): Unit = {
    this.selected = selected
    invalidateSelf()
  }

  override def draw(canvas: Canvas): Unit = {
    if (selected) {
      canvas.drawColor(0x7f000000)
      val bounds = getBounds
      val thickness = (THICKNESS_DP * density).toInt
      canvas.drawRect(bounds.top, bounds.left, bounds.right, bounds.top + thickness, paint)
      canvas.drawRect(bounds.bottom - thickness, bounds.left, bounds.right, bounds.bottom, paint)
      canvas.drawRect(bounds.top, bounds.left, bounds.left + thickness, bounds.bottom, paint)
      canvas.drawRect(bounds.top, bounds.right - thickness, bounds.right, bounds.bottom, paint)
    }
  }
}

object BorderSelectorDrawable {
  private val THICKNESS_DP = 2
} 

//设置package包名称以及导入依赖的类
package com.github.shadowsocks.widget

import android.animation.ValueAnimator
import android.content.Context
import android.support.design.widget.CoordinatorLayout
import android.support.design.widget.CoordinatorLayout.Behavior
import android.support.design.widget.Snackbar.SnackbarLayout
import android.support.v4.view.animation.FastOutSlowInInterpolator
import android.util.AttributeSet
import android.view.View
import com.github.clans.fab.FloatingActionMenu

import scala.collection.JavaConverters._


class FloatingActionMenuBehavior(context: Context, attrs: AttributeSet)
  extends Behavior[FloatingActionMenu](context, attrs) {
  private var fabTranslationYAnimator: ValueAnimator = _
  private var fabTranslationY: Float = _

  override def layoutDependsOn(parent: CoordinatorLayout, child: FloatingActionMenu, dependency: View) =
    dependency.isInstanceOf[SnackbarLayout]

  override def onDependentViewChanged(parent: CoordinatorLayout, child: FloatingActionMenu, dependency: View) = {
    dependency match {
      case _: SnackbarLayout =>
        var targetTransY = parent.getDependencies(child).asScala
          .filter(view => view.isInstanceOf[SnackbarLayout] && parent.doViewsOverlap(child, view))
          .map(view => view.getTranslationY - view.getHeight).reduceOption(_ min _).getOrElse(0F)
        if (targetTransY > 0) targetTransY = 0
        if (fabTranslationY != targetTransY) {
          val currentTransY = child.getTranslationY
          if (fabTranslationYAnimator != null && fabTranslationYAnimator.isRunning) fabTranslationYAnimator.cancel
          if (child.isShown && Math.abs(currentTransY - targetTransY) > child.getHeight * 0.667F) {
            if (fabTranslationYAnimator == null) {
              fabTranslationYAnimator = new ValueAnimator
              fabTranslationYAnimator.setInterpolator(new FastOutSlowInInterpolator)
              fabTranslationYAnimator.addUpdateListener(animation =>
                child.setTranslationY(animation.getAnimatedValue.asInstanceOf[Float]))
            }
            fabTranslationYAnimator.setFloatValues(currentTransY, targetTransY)
            fabTranslationYAnimator.start
          } else child.setTranslationY(targetTransY)
          fabTranslationY = targetTransY
        }
    }
    false
  }

  override def onStartNestedScroll(parent: CoordinatorLayout, child: FloatingActionMenu, directTargetChild: View,
                                   target: View, nestedScrollAxes: Int) = true
  override def onNestedScroll(parent: CoordinatorLayout, child: FloatingActionMenu, target: View, dxConsumed: Int,
                              dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int) = {
    super.onNestedScroll(parent, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed)
    val dy = dyConsumed + dyUnconsumed
    if (child.isMenuButtonHidden) {
      if (dy < 0) child.showMenuButton(true)
    } else if (dy > 0) child.hideMenuButton(true)
  }
} 

//设置package包名称以及导入依赖的类
package be.mygod.preference

import android.content.Context
import android.support.v14.preference.PreferenceDialogFragment
import android.view.{View, ViewGroup}

class NumberPickerPreferenceDialogFragment extends PreferenceDialogFragment {
  private lazy val preference = getPreference.asInstanceOf[NumberPickerPreference]
  private lazy val picker = preference.picker

  override protected def onCreateDialogView(context: Context) = {
    val parent = picker.getParent.asInstanceOf[ViewGroup]
    if (parent != null) parent.removeView(picker)
    picker
  }

  override protected def onBindDialogView(view: View) {
    super.onBindDialogView(view)
    picker.setValue(preference.getValue)
  }

  override protected def needInputMethod = true

  def onDialogClosed(positiveResult: Boolean) {
    picker.clearFocus // commit changes
    if (positiveResult) {
      val value = picker.getValue
      if (preference.callChangeListener(value)) preference.setValue(value)
    }
  }
} 

//设置package包名称以及导入依赖的类
package be.mygod.preference

import android.content.Context
import android.support.v14.preference.PreferenceDialogFragment
import android.view.{View, ViewGroup}

class EditTextPreferenceDialogFragment extends PreferenceDialogFragment {
  private lazy val preference = getPreference.asInstanceOf[EditTextPreference]
  private lazy val editText = preference.editText

  override protected def onCreateDialogView(context: Context) = {
    val parent = editText.getParent.asInstanceOf[ViewGroup]
    if (parent != null) parent.removeView(editText)
    editText
  }

  override protected def onBindDialogView(view: View) {
    super.onBindDialogView(view)
    editText.setText(preference.getText)
    val text = editText.getText
    if (text != null) editText.setSelection(0, text.length)
  }

  override protected def needInputMethod = true

  def onDialogClosed(positiveResult: Boolean) = if (positiveResult) {
    val value = editText.getText.toString
    if (preference.callChangeListener(value)) preference.setText(value)
  }
} 

//设置package包名称以及导入依赖的类
package be.mygod.preference

import android.content.Context
import android.support.v7.preference.{EditTextPreference => Parent}
import android.support.v7.widget.AppCompatEditText
import android.text.InputType
import android.util.AttributeSet


class EditTextPreference(context: Context, attrs: AttributeSet = null) extends Parent(context, attrs)
  with SummaryPreference {
  val editText = new AppCompatEditText(context, attrs)
  editText.setId(android.R.id.edit)

  override protected def getSummaryValue = {
    var text = getText
    if (text == null) text = ""
    val inputType = editText.getInputType
    if (inputType == (InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD) ||
      inputType == (InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_WEB_PASSWORD) ||
      inputType == (InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD))
      "\u2022" * text.length else text
  }

  override def setText(text: String) = {
    super.setText(text)
    notifyChanged
  }
} 

//设置package包名称以及导入依赖的类
package be.mygod.preference

import android.content.Context
import android.content.res.TypedArray
import android.support.v7.preference.DialogPreference
import android.util.AttributeSet
import android.view.ContextThemeWrapper
import android.widget.NumberPicker
import com.github.shadowsocks.R

class NumberPickerPreference(private val context: Context, attrs: AttributeSet = null)
  extends DialogPreference(context, attrs) with SummaryPreference {
  private[preference] val picker = new NumberPicker(new ContextThemeWrapper(context, R.style.NumberPickerStyle))
  private var value: Int = _

  {
    val a: TypedArray = context.obtainStyledAttributes(attrs, R.styleable.NumberPickerPreference)
    setMin(a.getInt(R.styleable.NumberPickerPreference_min, 0))
    setMax(a.getInt(R.styleable.NumberPickerPreference_max, Int.MaxValue - 1))
    a.recycle
  }

  def getValue = value
  def getMin = if (picker == null) 0 else picker.getMinValue
  def getMax = picker.getMaxValue
  def setValue(i: Int) {
    if (i == value) return
    picker.setValue(i)
    value = picker.getValue
    persistInt(value)
    notifyChanged
  }
  def setMin(value: Int) = picker.setMinValue(value)
  def setMax(value: Int) = picker.setMaxValue(value)

  override protected def onGetDefaultValue(a: TypedArray, index: Int): AnyRef =
    a.getInt(index, getMin).asInstanceOf[AnyRef]
  override protected def onSetInitialValue(restorePersistedValue: Boolean, defaultValue: Any) {
    val default = defaultValue.asInstanceOf[Int]
    setValue(if (restorePersistedValue) getPersistedInt(default) else default)
  }
  protected def getSummaryValue: AnyRef = getValue.asInstanceOf[AnyRef]
} 

//设置package包名称以及导入依赖的类
package com.android.perrier1034.post_it_note.receiver

import android.app.{Notification, NotificationManager, PendingIntent}
import android.content.{BroadcastReceiver, Context, Intent}
import android.support.v4.app.NotificationCompat
import android.text.TextUtils
import com.android.perrier1034.post_it_note.db.dao.{PageStore, NoteStore}
import com.android.perrier1034.post_it_note.model.NoteRealm
import com.android.perrier1034.post_it_note.ui.PageManager
import com.android.perrier1034.post_it_note.util.AlarmUtil
import com.android.perrier1034.post_it_note.{App, R}

object AlarmBroadcastReceiver {
  val KEY_INTENT_ALARM_USUAL = "KEY_INTENT_USUAL"
  val KEY_INTENT_PAGE_ORDER = "KEY_INTENT_PAGE_ORDER"
}

class AlarmBroadcastReceiver extends BroadcastReceiver {
  override def onReceive(context: Context, receivedIntent: Intent) {
    receivedIntent.getAction match {
      case Intent.ACTION_PACKAGE_REPLACED | Intent.ACTION_BOOT_COMPLETED =>
        NoteStore.rebootAlarmsRealm()

      case AlarmBroadcastReceiver.KEY_INTENT_ALARM_USUAL =>
        val id = receivedIntent.getLongExtra(AlarmUtil.alarmIntentDataKey, -1)
        val note = NoteStore.findByIdRealm(id)
        val pageOrder = PageStore .getPageOrderById(note.parentId)
        if (note.inRubbish != 1) {
          val nm = App.getInstance.getSystemService(Context.NOTIFICATION_SERVICE).asInstanceOf[NotificationManager]
          val notif = makeNotification(note, pageOrder)
          nm.notify(id.asInstanceOf[Int], notif)
        }
        NoteStore.clearAlarmRealm(id)
      case _ =>
    }
  }

  private def makeNotification(note: NoteRealm, pageOrder: Int): Notification = {
    val in = new Intent(App.getInstance, classOf[PageManager])
    in.putExtra(AlarmBroadcastReceiver.KEY_INTENT_PAGE_ORDER, pageOrder)
    val pi = PendingIntent.getActivity(App.getInstance, 0, in, PendingIntent.FLAG_UPDATE_CURRENT)
    val builder = new NotificationCompat.Builder(App.getInstance)
    val content = if (TextUtils.isEmpty(note.checkItems)) "(check list)" else note.content
    builder
      .setSmallIcon(R.drawable.ic_launcher)
      .setTicker(content)
      .setContentText(content)
      .setWhen(System.currentTimeMillis).setAutoCancel(true)
      .setContentIntent(pi)
      .setContentTitle(if (TextUtils.isEmpty(note.title)) "No title" else note.title)
      .build()
  }
} 

//设置package包名称以及导入依赖的类
package com.android.perrier1034.post_it_note.ui.views

import android.util.AttributeSet
import android.content.Context
import android.view.MotionEvent
import android.widget.ScrollView

class ScrollViewEx(ctx: Context, attrs: AttributeSet) extends ScrollView(ctx, attrs) {

  val DISTANCE = 20f
  var downX = 0f
  var downY = 0f

  def this(context: Context) = this(context, null)

  
  override def onInterceptTouchEvent(event: MotionEvent): Boolean = {

    // We have to call below to do scrolling properly.
    // So anyway call it and alloc the return value
    val b = super.onInterceptTouchEvent(event)

    // save touched position when "ACTION_DOWN" !
    if (event.getAction == MotionEvent.ACTION_DOWN) {
      downX = event.getX
      downY = event.getY
    }

    // calc distance
    if (event.getAction == MotionEvent.ACTION_UP) {
      return (Math.abs(event.getY - downY) > DISTANCE) || (Math.abs(event.getX - downX) > DISTANCE)
    }

    b
  }
} 

//设置package包名称以及导入依赖的类
package com.android.perrier1034.post_it_note.ui.views

import android.graphics.Canvas
import android.os.{Looper, Handler}
import android.support.v7.widget.AppCompatEditText
import android.util.AttributeSet
import android.content.Context
import android.view.inputmethod.InputMethodManager
import com.android.perrier1034.post_it_note.App

class HackyEditText(ctx: Context, attrs: AttributeSet) extends AppCompatEditText(ctx, attrs) {

  def this(ctx: Context) = this(ctx, null)

  var isTarget = false
  setWillNotDraw(false)

  override def onDraw(canvas: Canvas ) {
    super.onDraw(canvas)

    if (isTarget) {
      isTarget = false
      requestFocus()
      // setShowSoftInputOnFocus(true)

      if (isInputMethodTarget) {
        showKeyBoard()
      } else{
        // ugly hack but I have no choice.
        // this occur when CheckListAdapter.appendNewRow() called on creating new check-list-note
        new Thread(new Runnable() {
          override def run() = {
            new Handler(Looper.getMainLooper).postDelayed(new Runnable() {
              def run() = showKeyBoard()
            }, 50)
          }
        }).start()
      }
    }
  }

  def showKeyBoard() {
    val imm = getContext.getSystemService(Context.INPUT_METHOD_SERVICE).asInstanceOf[InputMethodManager]
    imm.showSoftInput(this, InputMethodManager.SHOW_FORCED)
  }

} 

//设置package包名称以及导入依赖的类
package com.android.perrier1034.post_it_note.ui.views

import android.content.Context
import android.support.v4.view.ViewPager
import android.util.AttributeSet
import android.view.MotionEvent

class HackyViewPager(ctx: Context, attrs: AttributeSet) extends ViewPager(ctx, attrs) {

  def this(context: Context) = this(context, null)

  var isLocked = false

  override def onInterceptTouchEvent(ev: MotionEvent): Boolean = {
    if (!isLocked) {
      try {
        return super.onInterceptTouchEvent(ev)
      } catch {
        case e: IllegalArgumentException =>
          e.printStackTrace()
          return false
      }
    }
    false
  }

  override def onTouchEvent(event: MotionEvent): Boolean = {
    if (!isLocked) {
      return super.onTouchEvent(event)
    }
    false
  }

  def toggleLock() {
    isLocked = !isLocked
  }

  def setLocked(b: Boolean ) {
    isLocked = b
  }
} 

//设置package包名称以及导入依赖的类
package com.android.perrier1034.post_it_note.ui

import android.content.Context
import android.content.res.TypedArray
import android.graphics.drawable.Drawable
import android.graphics.{Canvas, Rect}
import android.support.v7.widget.RecyclerView

object DividerAdder {
  private val ATTRS: Array[Int] = Array[Int](android.R.attr.listDivider)
}

class DividerAdder extends RecyclerView.ItemDecoration {
  private var mDivider: Drawable = null

  def this(context: Context) {
    this()
    val array: TypedArray = context.obtainStyledAttributes(DividerAdder.ATTRS)
    mDivider = array.getDrawable(0)
    array.recycle
  }

  @SuppressWarnings(Array("deplicated"))
  override def getItemOffsets(outRect: Rect, itemPosition: Int, parent: RecyclerView) {
    outRect.set(0, 0, 0, mDivider.getIntrinsicHeight)
  }

  override def onDraw(c: Canvas, parent: RecyclerView) {
    drawVertical(c, parent)
  }

  def drawVertical(c: Canvas, parent: RecyclerView) {
    val left: Int = parent.getPaddingLeft
    val right: Int = parent.getWidth - parent.getPaddingRight
    val childCount: Int = parent.getChildCount

    for (i <- 0 until parent.getChildCount) {
      val child = parent.getChildAt(i)
      val params = child.getLayoutParams.asInstanceOf[RecyclerView.LayoutParams]
      val top = child.getBottom + params.bottomMargin
      val bottom = top + mDivider.getIntrinsicHeight
      mDivider.setBounds(left, top, right, bottom)
      mDivider.draw(c)
    }
  }
} 

//设置package包名称以及导入依赖的类
package com.android.perrier1034.post_it_note.util

import java.util.{Calendar, TimeZone}

import android.app.{AlarmManager, PendingIntent}
import android.content.{Context, Intent}
import com.android.perrier1034.post_it_note.App
import com.android.perrier1034.post_it_note.receiver.AlarmBroadcastReceiver

object AlarmUtil {

  val alarmIntentDataKey = "alarmIntentDataKey "
  def set(id: Long, year: Int, month: Int, date: Int) = {
    val cal = Calendar.getInstance
    cal.setTimeInMillis(System.currentTimeMillis)
    cal.setTimeZone(TimeZone.getDefault)
    cal.set(Calendar.YEAR, year)
    cal.set(Calendar.MONTH, month)
    cal.set(Calendar.DAY_OF_MONTH, date)
    cal.set(Calendar.HOUR_OF_DAY, 0)
    cal.set(Calendar.MINUTE, 0)
    val intent = new Intent(App.getInstance, classOf[AlarmBroadcastReceiver])
    intent.putExtra(alarmIntentDataKey, id)
    intent.setAction(AlarmBroadcastReceiver.KEY_INTENT_ALARM_USUAL)
    val pendingIntent = PendingIntent.getBroadcast(App.getInstance, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT)
    val alarmManager = App.getInstance.getSystemService(Context.ALARM_SERVICE).asInstanceOf[AlarmManager]
    alarmManager.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis, pendingIntent)
  }

  def clear(noteId: Long) = {
    val intent = new Intent(App.getInstance, classOf[AlarmBroadcastReceiver])
    intent.putExtra(alarmIntentDataKey, noteId)
    val pendingIntent = PendingIntent.getBroadcast(App.getInstance, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT)
    val alarmManager = App.getInstance.getSystemService(Context.ALARM_SERVICE).asInstanceOf[AlarmManager]
    alarmManager.cancel(pendingIntent)
  }
} 

//设置package包名称以及导入依赖的类
package one.lockstep.vault.spi.impl.android

import java.io.File

import one.lockstep.util._
import one.lockstep.vault.spi
import android.content.Context

import scala.util.control.NonFatal

class AndroidVaultConfigurationProvider(defaultContext: => Context)
  extends spi.VaultConfigurationProvider
    with Logging {

  def nonPersistent = sys.props.get("lockstep.nonpersistent").exists(value => value.isEmpty || value == "true")
  def workDirOpt(context: Context): Option[File] =
    if (nonPersistent) {
      logger.debug("System property 'lockstep.nonpersistent' detected, vault will not be persisted.")
      None
    } else {
      val workDir = context.getDir("lockstep", Context.MODE_PRIVATE)
      logger.debug("setting work directory to " + workDir)
      Some(workDir)
    }

  override def vaultConfig(): spi.VaultConfiguration =
    try {
      val context = defaultContext
      new spi.VaultConfiguration(workDirOpt(context).orNull)
    } catch {
      case NonFatal(cause) => throw new RuntimeException("vault configuration failed", cause)
    }
}

object AndroidVaultConfigurationProvider
  extends AndroidVaultConfigurationProvider(AndroidUtil.currentApplication)