Android相机Camera1 API 使用TextureView预览，并快速获取预览Bitmapp

TextureView预览camera1API，可对TextureView进行旋转预览（旋转处理还没写）。
设置TextureView的SurfaceTextureListener()

textureView.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
            @Override
            public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
                openCamera(surface);
            }

            @Override
            public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {

            }

            @Override
            public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
                return false;
            }

            @Override
            public void onSurfaceTextureUpdated(SurfaceTexture surface) {

            }
        });

打开摄像头

 private void openCamera(SurfaceTexture surface) {
        if (Camera.getNumberOfCameras() == 0){
            Log.d(TAG,"未检出到摄像头");
            return;
        }
        try {
            camera = Camera.open();
            camera.setPreviewTexture(surface);
            camera.startPreview();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

另外起个线程连续读取预览的Bitmap画面：

new Thread(new Runnable() {
            @Override
            public void run() {
                while (true){
                    SystemClock.sleep(50);
                    iv_bitmap_preview.post(new Runnable() {
                        @Override
                        public void run() {
                            iv_bitmap_preview.setImageBitmap(textureView.getBitmap());
                        }
                    });
                }
            }
        }).start();