自动拍照后，位图从文件路径返回null get image

Question

我存储图像自动拍摄相机图像。从文件路径获取图像后，bimap值永远为null。我们怎么做？请帮助我们。

 private Camera mCamera;
 mCamera.takePicture(null, null, mPicture);

自动拍摄相机方法

     picture = getOutputMediaFile().getAbsolutePath();
     File file=new File(picture);
                BitmapFactory.Options options = new BitmapFactory.Options();
                options.inJustDecodeBounds = true;

                Bitmap bitmap =       BitmapFactory.decodeFile(file.getAbsolutePath(),options);

                ByteArrayOutputStream stream = new ByteArrayOutputStream();
                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
                byte[] image = stream.toByteArray();
                String img_str = Base64.encodeToString(image, Base64.DEFAULT);

调用相机onCreate

   picture = getOutputMediaFile().getPath();(OR)
   Bitmap bitmap = BitmapFactory.decodeFile(file.getPath);(OR)
   Bitmap bitmap = BitmapFactory.decodeFile(picture);(OR)

我已经获得了图像图片值/storage/emulated/0/Pictures/MyCameraApp/IMG20151215_141506.jpg 当我设置位图时，位图值返回null我们如何将图像文件路径字符串设置为位图

$(function() { // on load 
    $("#formId").on("submit", function (e) { // use the form submit event
      var CheckInDate = $("#CheckInDate").val();
      var today = new Date();
      var dd = today.getDate();
      var c = CheckInDate.split("-");
      var cdd = c[0];
      var cmm = c[1];
      var cyyyy = c[2];
      var mm = today.getMonth()+1; //January is 0!
      var yyyy = today.getFullYear();
      if(dd<10) {
          dd='0'+dd
      } 
      if(mm<10) {
          mm='0'+mm
      } 
      today = dd+'-'+mm+'-'+yyyy;
      if((cyyyy < yyyy) || (cyyyy == yyyy && cmm < mm) || (cyyyy == yyyy && cmm == mm && cdd < dd)) {
        $("#DateWarning").html("WrongDate");
        e.preventDefault(); // cancel submission
      }
      else {
        $("#DateWarning").html("")
      }
    });
});

我也像这样尝试

function checkDate() {
  var CheckInDate = $("#CheckInDate").val();
  var today = new Date();
  var dd = today.getDate();
  var c = CheckInDate.split("-");
  var cdd = c[0];
  var cmm = c[1];
  var cyyyy = c[2];
  var mm = today.getMonth()+1; //January is 0!
  var yyyy = today.getFullYear();
  if(dd<10) {
      dd='0'+dd
  } 
  if(mm<10) {
      mm='0'+mm
  } 
  today = dd+'-'+mm+'-'+yyyy;
  if((cyyyy < yyyy) || (cyyyy == yyyy && cmm < mm) || (cyyyy == yyyy && cmm == mm && cdd < dd)) {
    $("#DateWarning").html("WrongDate");
    return false;
  }
  else {
    $("#DateWarning").html("");
    return true;
  }
}
$(function() {
  $("#formId").on("submit", function (e) { // use the form submit event
    if (!checkDate()) e.preventDefault();
  });     
});