捕获的图像始终显示横向和setRotate无法解析

这里有很多类似的主题和问题，我遵循这个 。 但我得到错误。

我的代码

@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (resultCode == RESULT_OK) { if (requestCode == 1) { //h=0; File f = new File(Environment.getExternalStorageDirectory().toString()); for (File temp : f.listFiles()) { if (temp.getName().equals("temp.jpg")) { f = temp; File photo = new File(Environment.getExternalStorageDirectory(), "temp.jpg"); //pic = photo; break; } } try { Bitmap bitmap; BitmapFactory.Options bitmapOptions = new BitmapFactory.Options(); bitmapOptions.inJustDecodeBounds = false; bitmapOptions.inPreferredConfig = Bitmap.Config.RGB_565; bitmapOptions.inDither = true; bitmap = BitmapFactory.decodeFile(f.getAbsolutePath(), bitmapOptions); Global.img = bitmap; b.setImageBitmap(bitmap); String path = android.os.Environment.getExternalStorageDirectory() + File.separator + "Phoenix" + File.separator + "default"; //p = path; f.delete(); OutputStream outFile = null; File file = new File(path, String.valueOf(System.currentTimeMillis()) + ".jpg"); try { outFile = new FileOutputStream(file); bitmap.compress(Bitmap.CompressFormat.JPEG, 85, outFile); //pic=file; outFile.flush(); outFile.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } catch (Exception e) { e.printStackTrace(); } } else if (requestCode == 2) { Uri selectedImage = data.getData(); // h=1; //imgui = selectedImage; String[] filePath = {MediaStore.Images.Media.DATA}; Cursor c = getContentResolver().query(selectedImage, filePath, null, null, null); c.moveToFirst(); int columnIndex = c.getColumnIndex(filePath[0]); String picturePath = c.getString(columnIndex); c.close(); Bitmap thumbnail = (BitmapFactory.decodeFile(picturePath)); Log.w("path of image ******", picturePath + ""); b.setImageBitmap(thumbnail); } } else { finish(); } } 

按照教程后，我将代码更改为

  try { Bitmap bitmap; BitmapFactory.Options bitmapOptions = new BitmapFactory.Options(); bitmapOptions.inJustDecodeBounds = false; bitmapOptions.inPreferredConfig = Bitmap.Config.RGB_565; bitmapOptions.inDither = true; bitmap = BitmapFactory.decodeFile(f.getAbsolutePath(), bitmapOptions); BitmapFactory.Options opts = new BitmapFactory.Options(); Bitmap bm = BitmapFactory.decodeFile(f.getAbsolutePath(), opts); ExifInterface exif = new ExifInterface(f.getAbsolutePath()); String orientString = exif.getAttribute(ExifInterface.TAG_ORIENTATION); int orientation = orientString != null ? Integer.parseInt(orientString) : ExifInterface.ORIENTATION_NORMAL; int rotationAngle = 0; if (orientation == ExifInterface.ORIENTATION_ROTATE_90) rotationAngle = 90; if (orientation == ExifInterface.ORIENTATION_ROTATE_180) rotationAngle = 180; if (orientation == ExifInterface.ORIENTATION_ROTATE_270) rotationAngle = 270; Matrix matrix = new Matrix(); matrix.setRotate(rotationAngle, (float) bm.getWidth() / 2, (float) bm.getHeight() / 2); Bitmap rotatedBitmap = Bitmap.createBitmap(bm, 0, 0, bitmapOptions.outWidth, bitmapOptions.outHeight, matrix, true); Global.img = bitmap; b.setImageBitmap(bitmap); String path = android.os.Environment .getExternalStorageDirectory() + File.separator + "Phoenix" + File.separator + "default"; //p = path; f.delete(); OutputStream outFile = null; File file = new File(path, String.valueOf(System.currentTimeMillis()) + ".jpg"); 

1. matrix.setRotate中的setRotate无法解决。
2. 我在下面得到一条红线(bm, 0, 0, bitmapOptions.outWidth, bitmapOptions.outHeight, matrix, true); （无法解析方法createBitmap）

*********编辑*********

在我导入android.graphics.Matrix而不是android.opengl.Matrix,应用程序崩溃了。

LogCat错误

  Process: com.example.project.project, PID: 13045 java.lang.OutOfMemoryError at android.graphics.Bitmap.nativeCreate(Native Method) at android.graphics.Bitmap.createBitmap(Bitmap.java:928) at android.graphics.Bitmap.createBitmap(Bitmap.java:901) at android.graphics.Bitmap.createBitmap(Bitmap.java:833) at com.example.project.project.ImageFitScreen.onActivityResult(ImageFitScreen.java:236) at android.app.Activity.dispatchActivityResult(Activity.java:5643) 

这是第236行

  Bitmap rotatedBitmap = Bitmap.createBitmap(bm, 0, 0, bitmapOptions.outWidth, bitmapOptions.outHeight, matrix, true); 

Answer 1

更改为此Bitmap rotateBitmap = Bitmap.createBitmap（bm，0,0，bm.getWidth（），bm.getHeight（），matrix，true）;

Answer 2

我猜你导入错误的Matrix类，你应该导入android.graphics.Matrix，而不是android.opengl.Matrix，请仔细检查。