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2021/02/18 07:15

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ToaZI

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@@ -11,4 +11,257 @@
 という流れでメソッドが動くという感じであっていますか？
-ご教示いただければ幸いです。
+ご教示いただければ幸いです。
+```MainActivity.java
+public class MainActivity extends AppCompatActivity {
+    //RYUKA ADD
+    //利用するパーミッション分設定
+    private final String[] REQUIRED_PERMISSIONS =
+            new String[]{"android.permission.CAMERA",
+                    "android.permission.WRITE_EXTERNAL_STORAGE",
+                    "android.permission.RECORD_AUDIO"};
+    private int REQUEST_CODE_PERMISSIONS = 10;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        BottomNavigationView navView = findViewById(R.id.nav_view);
+        // Passing each menu ID as a set of Ids because each
+        // menu should be considered as top level destinations.
+        AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
+                R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications)
+                .build();
+        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
+        NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
+        NavigationUI.setupWithNavController(navView, navController);
+        //homefragment表示
+        addFragment(new HomeFragment());
+    }
+    private void addFragment(Fragment fragment) {
+        FragmentManager manager = getSupportFragmentManager();
+        FragmentTransaction transaction = manager.beginTransaction();
+        transaction.add(R.id.nav_host_fragment, fragment);
+        transaction.commit();
+    }
+}
+```
+```HomeFragment.java
+public class HomeFragment extends Fragment {
+    private Button st_button;
+    int go = 0;
+    Random rand = new Random();
+    int SetTime = 7000;
+    SoundPool soundPool;    // 効果音を鳴らす本体（コンポ）
+    int mp1;          // 効果音データ（mp3）
+    int mp2;          // 効果音データ（mp3）
+    int mp3;          // 効果音データ（mp3）
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_home, container, false);
+        return view;
+    }
+    public void onViewCreated(final View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        st_button = view.findViewById(R.id.button);
+        st_button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                            replaceFragment(new DashboardFragment());
+                            String str = String.valueOf(num);
+                            //ここにVideoFragmentのStartrecoadingを入れたい
+            }
+        });
+    private void replaceFragment(Fragment fragment) {
+        // フラグメントマネージャーの取得
+        FragmentManager manager = getFragmentManager();
+        FragmentTransaction transaction = manager.beginTransaction();
+        transaction.replace(R.id.container, fragment);
+        transaction.addToBackStack(null);
+        transaction.commit();
+    }
+}
+```
+```DashboredFragment.java
+public class DashboardFragment extends Fragment {
+    //RYUKA ADD
+    private VideoFragment camera2;
+    public View onCreateView(@NonNull LayoutInflater inflater,
+                             ViewGroup container, Bundle savedInstanceState) {
+        View root = inflater.inflate(R.layout.fragment_dashboard, container, false);
+        //カメラフラグメントの生成＆当フラグメントの子フラグメントとして起動
+        if (null == savedInstanceState) {
+            //カメラフラグメント生成
+            camera2 = VideoFragment.newInstance();
+            FragmentManager fragMan = getFragmentManager();
+            FragmentTransaction fragTransaction = fragMan.beginTransaction();
+            fragTransaction.add(R.id.container, camera2);
+            fragTransaction.commit();
+            getChildFragmentManager().beginTransaction().add(R.id.container, camera2).commit();
+        }
+        return root;
+    }
+}
+```
+```VideoFragment.java
+public class VideoFragment extends Fragment {
+rivate TextureView.SurfaceTextureListener mSurfaceTextureListener = new TextureView.SurfaceTextureListener() {
+        @Override
+        public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture,
+                                              int width, int height) {
+            openCamera(width, height);
+        }
+        @Override
+        public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture,
+                                                int width, int height) {
+            configureTransform(width, height);
+        }
+        @Override
+        public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) {
+            return true;
+        }
+        @Override
+        public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) {
+        }
+    };
+    private CameraDevice.StateCallback mStateCallback = new CameraDevice.StateCallback() {
+        @Override
+        public void onOpened(@NonNull CameraDevice cameraDevice) {
+            mCameraDevice = cameraDevice;
+            startPreview();
+            mCameraOpenCloseLock.release();
+            if (null != mTextureView) {
+                configureTransform(mTextureView.getWidth(), mTextureView.getHeight());
+            }
+        }
+        @Override
+        public void onDisconnected(@NonNull CameraDevice cameraDevice) {
+            mCameraOpenCloseLock.release();
+            cameraDevice.close();
+            mCameraDevice = null;
+        }
+        @Override
+        public void onError(@NonNull CameraDevice cameraDevice, int error) {
+            mCameraOpenCloseLock.release();
+            cameraDevice.close();
+            mCameraDevice = null;
+            Activity activity = getActivity();
+            if (null != activity) {
+                activity.finish();
+            }
+        }
+    };
+    public static VideoFragment newInstance() {
+        return new VideoFragment();
+    }
+撮影動画のアスペクト比を指定（3*4）
+プレビューサイズの設定
+View生成時処理
+View生成完了時処理
+復帰時処理
+終了時処理
+バックグラウンド処理の開始
+バックグラウンド処理の終了
+カメラの起動
+カメラの終了
+プレビュー画面の開始
+プレビュー画面の更新
+プレビューのサイズを元に動画の回転情報を指定
+MediaRecorder関連の初期設定処理
+保存先情報とファイル名の設定
+  */
+    public void startRecordingVideo() {
+        if (null == mCameraDevice || !mTextureView.isAvailable() || null == mPreviewSize) {
+            return;
+        }
+        try {
+            closePreviewSession();
+            setUpMediaRecorder();
+            SurfaceTexture texture = mTextureView.getSurfaceTexture();
+            assert texture != null;
+            texture.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
+            mPreviewBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_RECORD);
+            List<Surface> surfaces = new ArrayList<>();
+            //プレビュー画面の設定
+            Surface previewSurface = new Surface(texture);
+            surfaces.add(previewSurface);
+            mPreviewBuilder.addTarget(previewSurface);
+            //メディアレコーダー（録画処理）のセット
+            Surface recorderSurface = mMediaRecorder.getSurface();
+            surfaces.add(recorderSurface);
+            mPreviewBuilder.addTarget(recorderSurface);
+            //セッションの開始
+            mCameraDevice.createCaptureSession(surfaces, new CameraCaptureSession.StateCallback() {
+                @Override
+                public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
+                    mPreviewSession = cameraCaptureSession;
+                    updatePreview();
+                    getActivity().runOnUiThread(new Runnable() {
+                        @Override
+                        public void run() {
+                            //録画開始
+                            mMediaRecorder.start();
+                        }
+                    });
+                }
+                @Override
+                public void onConfigureFailed(@NonNull CameraCaptureSession cameraCaptureSession) {
+                    Activity activity = getActivity();
+                    if (null != activity) {
+                        Toast.makeText(activity, "Failed", Toast.LENGTH_SHORT).show();
+                    }
+                }
+            }, mBackgroundHandler);
+        } catch (CameraAccessException | IOException e) {
+            e.printStackTrace();
+        }
+    }
+    private void closePreviewSession() {
+        if (mPreviewSession != null) {
+            mPreviewSession.close();
+            mPreviewSession = null;
+        }
+    }
+}
+```