【发布时间】:2019-12-27 08:44:05
【问题描述】:
我正在使用 Glide 从 URL 中提取位图并将其显示在 ImageView 上并通过函数(Firebase ML 套件模型)运行它。但是,在某些设备上这不起作用,我相信没有返回有效的位图。我知道它适用的一些设备是 Pixel 3 XL、Pixel 3a 和三星 S10e。但是,它不适用于 OnePlus 6 和三星 A5。
在一个 Activity (MainActivity) 中,我启动相机应用程序,然后将 url 传递给另一个 Activity (PredictionResultActivity)。以下函数中的前两个函数将捕获的图像保存到 url,第三个函数将 url 传递给 PredictionResultActivity:
// Function to call when diagnose plant button clicked
public void capturePlant(View view) {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File
// TODO: error handling
}
// Continue only if the File was successfully created
if (photoFile != null) {
Uri photoURI = FileProvider.getUriForFile(this,
"com.sproutleaf.android.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
}
}
}
// Create image file of captured plant
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = image.getAbsolutePath();
return image;
}
// On result of activity launched from intent
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// If requestCode = camera app launched
if (requestCode == REQUEST_TAKE_PHOTO && resultCode == RESULT_OK) {
// Send path as intent
Intent intent = new Intent(this, PredictionResultActivity.class);
intent.putExtra("capturedPhotoPath", mCurrentPhotoPath);
startActivity(intent);
}
}
在 PredictionResultActivity 的onStart 方法中:
Intent intent = getIntent();
mCapturedPhotoPath = intent.getStringExtra("capturedPhotoPath");
Glide.with(this)
.asBitmap()
.load(mCapturedPhotoPath)
.into(new CustomTarget<Bitmap>() {
@Override
public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
mCapturedImageView.setImageBitmap(resource);
try {
runInference(resource);
} catch (FirebaseMLException e) {
e.printStackTrace();
}
}
@Override
public void onLoadCleared(@Nullable Drawable placeholder) {
}
});
在正常工作的设备上,位图正确显示,runInterference(resource) 正常工作。在不工作的设备上,不显示位图,并且永远不会调用来自runInterference(resource) 的回调。如果有人对为什么这在某些设备上不起作用有任何想法,我将非常感激。谢谢!
【问题讨论】:
-
它必须给出某种异常。你在 catch 块上检查了吗??
-
@RakeshKumar 问题是我手头没有这些设备 - 他们只是我的朋友在试用,所以我无法查看日志
-
要么,创建具有相同规格的模拟器,要么将 toast 放在 catch 块上,然后尝试在您的朋友设备中构建
-
我认为应该是明文问题,检查日志....应该有异常
-
如果您好奇,问题实际上是一些设备在相机意图期间破坏了活动。解释在我的回答中。谢谢你们的帮助!欣赏它
标签: android android-intent bitmap android-camera android-glide