- Fix crash when user click on button when no permission were given

- Fix live abort when user goto settings to enable permissions

app/src/main/java/fr/mobdev/peertubelive/activity/StreamActivity.kt

@@ -119,6 +119,7 @@ class StreamActivity : AppCompatActivity() {
             askStopLive(STOP)
         }
         binding.switchCamera.setOnClickListener { rtmpCamera2.switchCamera()  }
+        binding.switchCamera.visibility = View.GONE
         binding.muteMicro.setOnClickListener {
             if (rtmpCamera2.isAudioMuted) {
                 rtmpCamera2.enableAudio()
@@ -129,6 +130,7 @@ class StreamActivity : AppCompatActivity() {
                 binding.muteMicro.setImageResource(R.drawable.baseline_volume_off_24)
             }
         }
+        binding.muteMicro.visibility = View.GONE
         binding.flash.setOnClickListener {
             if (rtmpCamera2.isLanternEnabled) {
                 rtmpCamera2.disableLantern()
@@ -139,6 +141,7 @@ class StreamActivity : AppCompatActivity() {
                 binding.flash.setImageResource(R.drawable.baseline_flash_on_24)
             }
         }
+        binding.flash.visibility = View.GONE
 
         binding.rotation.setOnClickListener {
             if (rotationIsLanternEnabled) {
@@ -150,6 +153,7 @@ class StreamActivity : AppCompatActivity() {
                 binding.rotation.setImageResource(R.drawable.baseline_screen_rotation_24)
             }
         }
+        binding.rotation.visibility = View.GONE
         binding.surfaceView.holder.addCallback(object: SurfaceHolder.Callback {
             override fun surfaceCreated(p0: SurfaceHolder) {
                 surfaceInit = true
@@ -208,6 +212,7 @@ class StreamActivity : AppCompatActivity() {
                 binding.permissionInfo.visibility = View.VISIBLE
                 binding.gotoPermission.visibility = View.VISIBLE
                 binding.surfaceView.visibility = View.GONE
+
                 binding.gotoPermission.setOnClickListener {
                     val intent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
                     intent.data = Uri.fromParts("package", packageName, null)
@@ -217,6 +222,7 @@ class StreamActivity : AppCompatActivity() {
                 ActivityCompat.requestPermissions(this, permissions.toTypedArray(), 1)
             }
         } else {
+            binding.surfaceView.visibility = View.VISIBLE
             permissionGiven = true
             if(surfaceInit && !streamIsActive)
                 startStream()
@@ -225,7 +231,7 @@ class StreamActivity : AppCompatActivity() {
 
     override fun onStop() {
         super.onStop()
-        if (!hasWindowFocus()) {
+        if (this@StreamActivity::rtmpCamera2.isInitialized && !hasWindowFocus()) {
             unregisterReceiver(lockReceiver)
             setResult(BACKGROUND)
             finish()
@@ -259,6 +265,10 @@ class StreamActivity : AppCompatActivity() {
         binding.permissionInfo.visibility = View.GONE
         binding.gotoPermission.visibility = View.GONE
         binding.surfaceView.visibility = View.VISIBLE
+        binding.muteMicro.visibility = View.VISIBLE
+        binding.rotation.visibility = View.VISIBLE
+        binding.switchCamera.visibility = View.VISIBLE
+        binding.flash.visibility = View.VISIBLE
 
         val connectChecker : ConnectCheckerRtmp = object : ConnectCheckerRtmp {
             override fun onConnectionSuccessRtmp() {
@@ -333,9 +343,6 @@ class StreamActivity : AppCompatActivity() {
             }
         }
 
-
-
-
         rtmpCamera2.startPreview(CameraHelper.Facing.BACK, width,height)
 
 //start stream