質問編集履歴

ソースコードを分割して見やすくしました。再描画するためのonResume()メソッドは、今回の問題とはあまり関係なのかな？と思い割愛しました。

2020/09/08 00:07

投稿

Takuya615

スコア9

test CHANGED Viewed

File without changes

test CHANGED Viewed

@@ -20,7 +20,7 @@
 ### 該当のソースコード
+録画時のボタンアクション。
 ```ここに言語名を入力
@@ -110,256 +110,174 @@
+```
+openCamera()　のコード
+```
+fun openCamera(width: Int, height: Int) {
-    private fun prepareBackgroundHandler() {
+        val manager: CameraManager =
-        backgroundThread = HandlerThread("backgroundThread")
+            getSystemService(Context.CAMERA_SERVICE) as CameraManager
+        //CameraIdListのゼロ番目は多くの場合、背面カメラの1倍
+        val permission = ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA)
+        val permission2 = ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO)
+        if (permission != PackageManager.PERMISSION_GRANTED) {
-        backgroundThread?.start()
+            requestCameraPermission()
-        backgroundHandler = Handler(backgroundThread?.looper)
+            return
-    }
+        }
+        if (permission2 != PackageManager.PERMISSION_GRANTED) {
+            requestRECORD_AUDIOPermission()
+            return
+        }
+        setUpCameraOptions()
+        configureTransform(width, height)
+        //ここにオプションやコンフィグトランスフォームの設定関数入れる？
+        manager.openCamera(cameraId, stateCallback, backgroundHandler);
+    }
+```
+openCamera()で使う設定
+```
-    override fun onResume() {
-        super.onResume()
-        prepareBackgroundHandler()
-        if (textureView.isAvailable) {
-            openCamera(textureView.width, textureView.height)
-        } else {
-            textureView.surfaceTextureListener = object : TextureView.SurfaceTextureListener {
-                override fun onSurfaceTextureAvailable(
-                    surface: SurfaceTexture,
-                    width: Int,
-                    height: Int
-                ) {
-                    imageReader = ImageReader.newInstance(
-                        width, height,
-                        ImageFormat.JPEG, /*maxImages*/ 2
-                    );
-                    openCamera(width, height)
+//　　　　　　　　　　　↑　　上のopenCameraの第2引数として利用　　↑
+    private val stateCallback = object : CameraDevice.StateCallback() {
+        override fun onOpened(cameraDevice: CameraDevice) {
+            this@Camera2Activity.cameraDevice = cameraDevice
+            createCameraPreviewSession()
+        }
+        override fun onDisconnected(cameraDevice: CameraDevice) {
+            cameraDevice.close()
+            this@Camera2Activity.cameraDevice = null
+        }
+        override fun onError(cameraDevice: CameraDevice, error: Int) {
+            onDisconnected(cameraDevice)
+            finish()
+        }
+    }
+    //         ↑　　上のstateCallback関数のonOpendで使われるｌ関数　　　↑
+    private fun createCameraPreviewSession() {
+        val texture = textureView.surfaceTexture
+        texture.setDefaultBufferSize(previewSize.width, previewSize.height)
+        val surface = Surface(texture)//TextureViewからの撮影データの受取先
+        previewRequestBuilder = cameraDevice!!.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW)
+        previewRequestBuilder.addTarget(surface)
+        //       CameraCaptureSession はカメラから送られてくる画像を受け取ったり、
+        //       同一セッションで前に受け取った画像の再処理などをするクラスです
+        cameraDevice?.createCaptureSession(Arrays.asList(surface, imageReader?.surface),
+            @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
+            object : CameraCaptureSession.StateCallback() {
+                override fun onConfigured(cameraCaptureSession: CameraCaptureSession) {
+                    if (cameraDevice == null) return;
+                    captureSession = cameraCaptureSession
+                    previewRequestBuilder.set(
+                        CaptureRequest.CONTROL_AF_MODE,
+                        CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE
+                    )
+                    //プレビュー画像を TextureView に送ります
+                    previewRequest = previewRequestBuilder.build()
+                    captureSession?.setRepeatingRequest(
+                        previewRequest,
+                        null, null
+                    )
                 }
-                override fun onSurfaceTextureSizeChanged(
-                    p0: SurfaceTexture?,
-                    p1: Int,
-                    p2: Int
-                ) {
-                    configureTransform(p1, p2)
-                }
-                override fun onSurfaceTextureUpdated(p0: SurfaceTexture?) {
-                }
-                override fun onSurfaceTextureDestroyed(p0: SurfaceTexture?): Boolean {
-                    Log.e("TAG", "onSurfaceTextureDestroyedの関数が仕事してます");
-                    if(cameraDevice != null){
-                        closeCamera();
-                        cameraDevice = null;
-                    }
-                    return false
-                }
-            }
-        }
-    }
-    fun openCamera(width: Int, height: Int) {
-        val manager: CameraManager =
-            getSystemService(Context.CAMERA_SERVICE) as CameraManager
-        //CameraIdListのゼロ番目は多くの場合、背面カメラの1倍
-        val permission = ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA)
-        val permission2 = ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO)
-        if (permission != PackageManager.PERMISSION_GRANTED) {
-            requestCameraPermission()
-            return
-        }
-        if (permission2 != PackageManager.PERMISSION_GRANTED) {
-            requestRECORD_AUDIOPermission()
-            return
-        }
-        setUpCameraOptions()
-        configureTransform(width, height)
-        //ここにオプションやコンフィグトランスフォームの設定関数入れる？
-        manager.openCamera(cameraId, stateCallback, backgroundHandler);
-    }
-//　　　　　　　　　　　↑　　上のopenCameraの第2引数として利用　　↑
-    private val stateCallback = object : CameraDevice.StateCallback() {
-        override fun onOpened(cameraDevice: CameraDevice) {
-            this@Camera2Activity.cameraDevice = cameraDevice
-            createCameraPreviewSession()
-        }
-        override fun onDisconnected(cameraDevice: CameraDevice) {
-            cameraDevice.close()
-            this@Camera2Activity.cameraDevice = null
-        }
-        override fun onError(cameraDevice: CameraDevice, error: Int) {
-            onDisconnected(cameraDevice)
-            finish()
-        }
-    }
-    //         ↑　　上のstateCallback関数のonOpendで使われるｌ関数　　　↑
-    private fun createCameraPreviewSession() {
-        val texture = textureView.surfaceTexture
-        texture.setDefaultBufferSize(previewSize.width, previewSize.height)
-        val surface = Surface(texture)//TextureViewからの撮影データの受取先
-        previewRequestBuilder = cameraDevice!!.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW)
-        previewRequestBuilder.addTarget(surface)
-        //       CameraCaptureSession はカメラから送られてくる画像を受け取ったり、
-        //       同一セッションで前に受け取った画像の再処理などをするクラスです
-        cameraDevice?.createCaptureSession(Arrays.asList(surface, imageReader?.surface),
-            @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
-            object : CameraCaptureSession.StateCallback() {
-                override fun onConfigured(cameraCaptureSession: CameraCaptureSession) {
-                    if (cameraDevice == null) return;
-                    captureSession = cameraCaptureSession
-                    previewRequestBuilder.set(
-                        CaptureRequest.CONTROL_AF_MODE,
-                        CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE
-                    )
-                    //プレビュー画像を TextureView に送ります
-                    previewRequest = previewRequestBuilder.build()
-                    captureSession?.setRepeatingRequest(
-                        previewRequest,
-                        null, null
-                    )
-                }
                 override fun onConfigureFailed(session: CameraCaptureSession) {}
             }, null
@@ -368,10 +286,6 @@
     }
 ```