我尝试上传到firebase一张图片，当我上传它时告诉我文件的大小是0字节并且不显示内容图片
一切似乎都很好，然后发生了什么？ StorageReference storageRef = storage.getReferenceFromUrl("gs://<your-bucket-name>");
if (inputStream!=null) {
String pic = "BathroomImage" + +rand.nextInt(1000) + ".jpg";
mountainsRef = storageRef.child(pic);
uploadTask = mountainsRef.putStream(inputStream);
uploadTask.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Log.d("this is the faiure:","hey im here");
}
}).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
taskSnapshot.getMetadata();
Uri downloadUri = taskSnapshot.getDownloadUrl();
bitmap.recycle();
bitmap=null;
System.gc();
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
}
这里我将图片从数据上传到inputream。
void TakePickphoto(){
Intent galleryIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); // Create intent to Open Image applications like Gallery, Google Photos
startActivityForResult( galleryIntent, RESULT_LOAD_IMAGE);// Start the Intent
public void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode ==getActivity().RESULT_OK && null != data) {
selectedImage = data.getData(); // Get the URI Image from data
handler= new Handler();
try {
Thread.sleep(50);
} catch (InterruptedException e) {
e.printStackTrace();
}
Runnable runnable = new Runnable() {
@Override
public void run() {
try {
inputStream = context.getContentResolver().openInputStream(data.getData());
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize =4;
bitmap = BitmapFactory.decodeStream(inputStream, new Rect(40,40,40,40),options);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
handler.post(new Runnable() {
@Override
public void run() {
ImageView imageView;
imageView = (ImageView) view.findViewById(R.id.imageView2);
imageView.setImageBitmap(bitmap);
}
});
}
};
new Thread(runnable).start();
}
}
}
请帮助，一切看起来都很好。
答案 0 :(得分：0)
**这不会以完整分辨率保存图像** 要以全分辨率保存图片，请研究在启动TakePictureIntent时如何执行此操作。
我遇到了同样的错误，并通过设置我的照片和上传来解决这个问题：
//takes the picture
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null) {
startActivityForResult(takePictureIntent, 1);
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 1 && resultCode == Activity.RESULT_OK) {
//saves the pic locally
Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get("data");
ByteArrayOutputStream baos = new ByteArrayOutputStream();
imageBitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] dataBAOS = baos.toByteArray();
/***************** UPLOADS THE PIC TO FIREBASE*****************/
// Points to the root reference
StorageReference storageRef = FirebaseStorage.getInstance().getReferenceFromUrl("your-root-storage-ref");
StorageReference imagesRef = storageRef.child("image");
UploadTask uploadTask = imagesRef.putBytes(dataBAOS);
uploadTask.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception exception) {
// Handle unsuccessful uploads
}
}).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
// taskSnapshot.getMetadata() contains file metadata such as size, content-type, and download URL.
Uri downloadUrl = taskSnapshot.getDownloadUrl();
}
});
}
}
这样，它会使用以下文件结构压缩并保存Firebase存储中的图像：
root - ＆gt;图像
答案 1 :(得分：0)
您可以将InputStream直接从Uri传递到putStream方法。您可能希望在上传之前自己调整图像大小，这需要更多的工作，但这种方式在客户端使用的内存非常少。
if (requestCode == IMAGE_PICKER_SELECT && resultCode == Activity.RESULT_OK) {
Uri imageUri = data.getData();
try {
ContentResolver contentResolver = getActivity().getContentResolver();
StorageMetadata storageMetadata = new StorageMetadata.Builder()
.setContentType(contentResolver.getType(imageUri))
.build();
FirebaseStorage.getInstance().getReference()
.child("users")
.child(FirebaseAuth.getInstance().getCurrentUser().getUid())
.child(UUID.randomUUID().toString())
.putStream(contentResolver.openInputStream(imageUri), storageMetadata)
.addOnSuccessListener(getActivity(), new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot task) {
Uri downloadUrl = task.getDownloadUrl();
Toast.makeText(getActivity(), R.string.image_successfully_uploaded, Toast.LENGTH_LONG).show();
}
})
.addOnFailureListener(getActivity(), new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(getActivity(), R.string.error_uploading_image, Toast.LENGTH_LONG).show();
}
});
} catch (IOException e) {
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}