从应用程序我应该可以将图库中的图像添加到图像按钮，然后添加食物名称，描述和价格，最后点击上传。 图像应上传到我的firebase存储，而Price，Description和Food名称应上传到firebase数据库
StorageReference filePath = storageReference.child(uri.getLastPathSegment());会导致错误，因此图片不会显示在图片按钮上，也不会上传到firebase存储空间。
public class AddFood extends AppCompatActivity {
private ImageButton foodImage;
private static final int GALLREQ=1;
private EditText name,desc,price;
private Uri uri = null;
private StorageReference storageReference = null;
private DatabaseReference mRef;
private FirebaseDatabase firebaseDatabase;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_food);
name = (EditText) findViewById(R.id.ItemName);
desc = (EditText) findViewById(R.id.ItemDesc);
price = (EditText) findViewById(R.id.ItemPrice);
storageReference= FirebaseStorage.getInstance().getReference();
mRef= FirebaseDatabase.getInstance().getReference("Item");
}
public void ImageButtonclicked(View view){
Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent,GALLREQ);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(resultCode==GALLREQ&& resultCode==RESULT_OK) {
uri = data.getData();
foodImage = (ImageButton) findViewById(R.id.FoodImageButton);
foodImage.setImageURI(uri);
}
}
public void uploadClicked(View view){
final String name_text = name.getText().toString().trim();
final String desc_text = desc.getText().toString().trim();
String price_text = price.getText().toString().trim();
if (!TextUtils.isEmpty(name_text)&&!TextUtils.isEmpty(desc_text)&&!TextUtils.isEmpty(price_text)){
StorageReference filePath = storageReference.child(uri.getLastPathSegment());
filePath.putFile(uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
final Uri downloaduri = taskSnapshot.getDownloadUrl();
Toast.makeText(AddFood.this,"uploaded",Toast.LENGTH_LONG).show();
}
});
final DatabaseReference newPost = mRef.push();
newPost.child("name").setValue(name_text);
newPost.child("desc").setValue(desc);
newPost.child("price").setValue(price_text);
}
}
}