我想以字符串形式获取从图库加载或从相机中挑选的图像的图像扩展名(例如“jpg”、“png”、“bmp”等)。
我已经使用这种形式的方法从图库中加载图像
private static final int SELECT_PICTURE_ACTIVITY_REQUEST_CODE = 0;
....
private void selectPicture() {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, SELECT_PICTURE_ACTIVITY_REQUEST_CODE);
}
....
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
switch (requestCode) {
case SELECT_PICTURE_ACTIVITY_REQUEST_CODE:
if (resultCode == RESULT_OK) {
Uri selectedImage = imageReturnedIntent.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
if (cursor.moveToFirst()) {
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
Bitmap bitmap = BitmapFactory.decodeFile(filePath);
.........
}
cursor.close();
}
break;
}
}
最佳答案
filePath.substring(filePath.lastIndexOf(".")); // Extension with dot .jpg, .png
或
filePath.substring(filePath.lastIndexOf(".") + 1); // Without dot jpg, png
关于android - 从从画廊或相机中挑选的图像中获取文件扩展名，作为字符串，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/9758151/