up

app/src/main/java/io/legado/app/help/ActivityHelp.kt

@@ -94,7 +94,7 @@ class ActivityHelp private constructor() {
     /**
      * 判断指定Activity是否存在
      */
-    fun isExist(activityClass: Class<*>): Boolean? {
+    fun isExist(activityClass: Class<*>): Boolean {
         var result = false
         for (item in activities) {
             if (item.get()?.javaClass == activityClass) {

app/src/main/java/io/legado/app/receiver/MediaButtonReceiver.kt

@@ -4,6 +4,11 @@ import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import android.view.KeyEvent
+import io.legado.app.constant.Bus
+import io.legado.app.help.ActivityHelp
+import io.legado.app.ui.readbook.ReadBookActivity
+import io.legado.app.utils.postEvent
+import org.jetbrains.anko.startActivity
 
 
 /**
@@ -41,7 +46,12 @@ class MediaButtonReceiver : BroadcastReceiver() {
         }
 
         private fun readAloud(context: Context) {
-
+            ActivityHelp.getInstance()?.isExist(ReadBookActivity::class.java)?.let {
+                if (!it) {
+                    context.startActivity<ReadBookActivity>()
+                }
+            }
+            postEvent(Bus.READ_ALOUD, "")
         }
     }
 

app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt

@@ -246,6 +246,6 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_rea
         observeEvent<Int>(Bus.TTS_RANGE_START) {}
         observeEvent<String>(Bus.TIME_CHANGED) {}
         observeEvent<Int>(Bus.BATTERY_CHANGED) {}
-        observeEvent<String>(Bus.READ_ALOUD) { onClickReadAloud() }
+        observeEventSticky<String>(Bus.READ_ALOUD) { onClickReadAloud() }
     }
 }