Implemented pausing flicker code

fints4javaAndroidApp/src/main/java/net/dankito/banking/fints4java/android/ui/views/ChipTanFlickerCodeView.kt

@@ -4,6 +4,7 @@ import android.content.Context
 import android.util.AttributeSet
 import android.view.LayoutInflater
 import android.view.View
+import android.widget.ImageButton
 import android.widget.LinearLayout
 import kotlinx.android.synthetic.main.view_flicker_code.view.*
 import kotlinx.android.synthetic.main.view_tan_image_size_controls.view.*
@@ -35,10 +36,12 @@ open class ChipTanFlickerCodeView @JvmOverloads constructor(
     protected lateinit var stripe4: ChipTanFlickerCodeStripeView
     protected lateinit var stripe5: ChipTanFlickerCodeStripeView
 
+    protected lateinit var allStripes: List<ChipTanFlickerCodeStripeView>
+
     protected lateinit var tanGeneratorLeftMarker: View
     protected lateinit var tanGeneratorRightMarker: View
 
-    protected lateinit var allStripes: List<ChipTanFlickerCodeStripeView>
+    protected lateinit var btnPauseFlickerCode: ImageButton
 
     protected val animator = FlickerCodeAnimator()
 
@@ -49,6 +52,8 @@ open class ChipTanFlickerCodeView @JvmOverloads constructor(
 
     protected var currentFrequency = 30
 
+    protected var isFlickerCodePaused = false
+
 
     init {
         setupUi(context)
@@ -64,6 +69,9 @@ open class ChipTanFlickerCodeView @JvmOverloads constructor(
         rootView.btnIncreaseSpeed.setOnClickListener { increaseFrequency() }
         rootView.btnDecreaseSpeed.setOnClickListener { decreaseFrequency() }
 
+        btnPauseFlickerCode = rootView.btnPauseFlickerCode
+        btnPauseFlickerCode.setOnClickListener { togglePauseFlickerCode() }
+
         stripe1 = rootView.findViewById(R.id.flickerCodeStripe1)
         stripe2 = rootView.findViewById(R.id.flickerCodeStripe2)
         stripe3 = rootView.findViewById(R.id.flickerCodeStripe3)
@@ -83,7 +91,6 @@ open class ChipTanFlickerCodeView @JvmOverloads constructor(
     }
 
 
-
     override fun onDetachedFromWindow() {
         animator.stop()
 
@@ -160,6 +167,20 @@ open class ChipTanFlickerCodeView @JvmOverloads constructor(
     }
 
 
+    open fun togglePauseFlickerCode() {
+        if (isFlickerCodePaused == false) {
+            animator.pause()
+            btnPauseFlickerCode.setImageResource(android.R.drawable.ic_media_play)
+        }
+        else {
+            animator.resume()
+            btnPauseFlickerCode.setImageResource(android.R.drawable.ic_media_pause)
+        }
+
+        isFlickerCodePaused = !!! isFlickerCodePaused
+    }
+
+
     open fun setCode(flickerCode: FlickerCode) {
         animator.stop()
 

fints4javaAndroidApp/src/main/java/net/dankito/banking/fints4java/android/util/FlickerCodeAnimator.kt

@@ -22,6 +22,9 @@ open class FlickerCodeAnimator { // TODO: move to fints4javaLib
 
     protected var currentStepIndex = 0
 
+    @Volatile
+    protected var isPaused = false
+
     protected var calculateAnimationThread: Thread? = null
 
 
@@ -41,6 +44,7 @@ open class FlickerCodeAnimator { // TODO: move to fints4javaLib
 
     protected open fun calculateAnimation(steps: List<Array<Bit>>, showStep: (Array<Bit>) -> Unit) {
         while (Thread.currentThread().isInterrupted == false) {
+            if (isPaused == false) {
                 val nextStep = steps[currentStepIndex]
 
                 showStep(nextStep)
@@ -49,6 +53,7 @@ open class FlickerCodeAnimator { // TODO: move to fints4javaLib
                 if (currentStepIndex >= steps.size) {
                     currentStepIndex = 0 // all steps shown, start again from beginning
                 }
+            }
 
             try {
                 TimeUnit.MILLISECONDS.sleep(1000L / currentFrequency)
@@ -58,6 +63,14 @@ open class FlickerCodeAnimator { // TODO: move to fints4javaLib
         }
     }
 
+    open fun pause() {
+        this.isPaused = true
+    }
+
+    open fun resume() {
+        this.isPaused = false
+    }
+
     open fun stop() {
         try {
             if (calculateAnimationThread?.isInterrupted == false) {

fints4javaAndroidApp/src/main/res/layout/view_flicker_code.xml

@@ -19,7 +19,8 @@
             android:layout_height="match_parent"
             android:gravity="center_vertical"
             android:layout_marginRight="@dimen/view_flicker_code_controls_sections_space"
-            android:layout_marginEnd="@dimen/view_flicker_code_controls_sections_space"/>
+            android:layout_marginEnd="@dimen/view_flicker_code_controls_sections_space"
+        />
 
         <TextView
             android:layout_width="wrap_content"
@@ -42,6 +43,15 @@
             android:text="@string/view_flicker_code_decrease_frequency"
         />
 
+        <ImageButton
+            android:id="@+id/btnPauseFlickerCode"
+            android:layout_width="@dimen/view_tan_image_controls_buttons_width"
+            android:layout_height="@dimen/view_tan_image_controls_buttons_height"
+            android:layout_marginLeft="@dimen/view_flicker_code_controls_sections_space"
+            android:layout_marginStart="@dimen/view_flicker_code_controls_sections_space"
+            android:src="@android:drawable/ic_media_pause"
+        />
+
     </LinearLayout>
 
     <LinearLayout