修复 任务管理崩溃的Bug

修复 id有关选择器报错的Bug
修复 engines.myEngine()报错的Bug

automator/src/main/java/com/stardust/automator/UiObject.kt

@@ -105,7 +105,7 @@ open class UiObject(info: Any?, private val allocator: AccessibilityNodeInfoAllo
         return drawingOrder
     }
 
-    open fun id(): String {
+    open fun id(): String? {
         return viewIdResourceName
     }
 
@@ -145,21 +145,21 @@ open class UiObject(info: Any?, private val allocator: AccessibilityNodeInfoAllo
     }
 
     override fun performAction(action: Int, bundle: Bundle): Boolean {
-        try {
-            return super.performAction(action, bundle)
+        return try {
+            super.performAction(action, bundle)
         } catch (e: IllegalStateException) {
             // FIXME: 2017/5/5
-            return false
+            false
         }
 
     }
 
     override fun performAction(action: Int): Boolean {
-        try {
-            return super.performAction(action)
+        return try {
+            super.performAction(action)
         } catch (e: IllegalStateException) {
             // FIXME: 2017/5/5
-            return false
+            false
         }
 
 
@@ -374,7 +374,8 @@ open class UiObject(info: Any?, private val allocator: AccessibilityNodeInfoAllo
     }
 
     override fun findAccessibilityNodeInfosByViewId(viewId: String): List<AccessibilityNodeInfoCompat> {
-        return allocator?.findAccessibilityNodeInfosByViewId(this, viewId) ?: super.findAccessibilityNodeInfosByViewId(viewId)
+        return allocator?.findAccessibilityNodeInfosByViewId(this, viewId)
+                ?: super.findAccessibilityNodeInfosByViewId(viewId)
     }
 
     fun findByViewId(viewId: String): List<UiObject> {

automator/src/main/java/com/stardust/view/accessibility/AccessibilityInfoProvider.kt

@@ -34,7 +34,7 @@ class AccessibilityInfoProvider(private val context: Context) : AccessibilityDel
     var latestActivity = ""
         private set
 
-    var useUsageStats: Boolean = true
+    var useUsageStats: Boolean = false
 
     override val eventTypes: Set<Int>?
         get() = AccessibilityDelegate.ALL_EVENT_TYPES
@@ -59,7 +59,7 @@ class AccessibilityInfoProvider(private val context: Context) : AccessibilityDel
         val current = System.currentTimeMillis()
         val usageStats = usageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_BEST, current - 60 * 60 * 1000, current)
         return if (usageStats.isEmpty()) {
-            ""
+            mLatestPackage
         } else {
             usageStats.sortBy {
                 it.lastTimeStamp