Android拍照、攝像方向旋轉的問題 代碼具體解釋
阿新 • • 發佈:2017-05-06
void window bean ken cas style 角度 port n)
改方法動態獲取手機是Landscape(橫屏)或Portrait(豎屏)來更改預覽圖。 }
近期做了個拍照、攝像的應用。遇到了拍照、攝像的圖像相對於現實。翻轉了90度。原因:相機這個硬件的角度是橫屏的角度,所以會出現都是橫屏的。
1.照相、攝影預覽圖像的正確角度顯 示:
public static void setCameraDisplayOrientation(Activity activity, int cameraId, android.hardware.Camera camera) { android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo(); android.hardware.Camera.getCameraInfo(cameraId, info); int rotation = activity.getWindowManager().getDefaultDisplay() .getRotation(); int degrees = 0; switch (rotation) { case Surface.ROTATION_0: degrees = 0; break; case Surface.ROTATION_90: degrees = 90; break; case Surface.ROTATION_180: degrees = 180; break; case Surface.ROTATION_270: degrees = 270; break; } int result; if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { result = (info.orientation + degrees) % 360; result = (360 - result) % 360; // compensate the mirror } else { // back-facing result = (info.orientation - degrees + 360) % 360; } camera.setDisplayOrientation(result); }
改方法動態獲取手機是Landscape(橫屏)或Portrait(豎屏)來更改預覽圖。
(後屏的cameraId是0 )
2.圖像保存的正確角度(當我們拍下照片,發現角度又不正確)
@Override
public void onPictureTaken(byte[] data, Camera camera) {
try { Bitmap realImage = BitmapFactory.decodeByteArray(data, 0, data.length); android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo(); android.hardware.Camera.getCameraInfo(0, info); Bitmap bitmap = rotate(realImage, info.orientation); FileOutputStream fos = new FileOutputStream(pictureFile); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos); fos.close(); // FileOutputStream fos = new FileOutputStream(pictureFile); // fos.write(data); // fos.close(); DBRecordAdapter.getInstance().insertRecord(bean); } catch (FileNotFoundException e) { Log.d(TAG, "File not found: " + e.getMessage()); } catch (IOException e) { Log.d(TAG, "Error accessing file: " + e.getMessage()); }
3.錄像回放的正確的方向:
mMediaRecorder.setOrientationHint(90);該方法在prepare()之前調用。
Android拍照、攝像方向旋轉的問題 代碼具體解釋