[英]How to retrieve data from firebase database and pass all the data to sms
我如何获取我的Products Firebase数据库下的所有数据,我只想获取productName和数量。 图片中的日期是我的productID,而不是实际日期。 我的问题是我在“产品”表下仅获得一个productName和数量。
到目前为止,这是我创建的代码
===这是我当前的代码=== ===这是onclick方法===
DatabseReference reff = FirebaseDatabase.getInstance().getReference("Cart List");
DatabseReference reff2= FirebaseDatabase.getInstance().getReference("Cart List");
reff.child("User View").child(phoneNumber).child("Products").addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
for(DataSnapshot snap: dataSnapshot.getChildren()){
//first get all the dates
String getDates = snap.getKey();
//add all the dates to reff2
reff2.child("User View").child(phoneNumber).child("Products").child.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
for(DataSnapshot snap1: dataSnapshot.getChildren()){
//value of product
String myProductName = snap1.child("ProductName").getValue(String.class);
//value of quanity just convert it to int if you want to calculate
String myQuantity= snap1.child("quantity").getValue(String.class);
//add your method
setSMSData(myProductName,myQuantity);
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
===这是setSMSData ====
private void setSMSData (String myProductName, String myQuantity) {
// add the phone number in the data
Uri uri = Uri.parse("smsto:" + "09257777547");
Intent smsSIntent = new Intent(Intent.ACTION_SENDTO, uri);
// add the message at the sms_body extra field
smsSIntent.putExtra("sms_body", "Order "+ myProductName +":"+ myQuantity +" (Sent Via SKIP MOBILE)");
try{
startActivity(smsSIntent);
} catch (Exception ex) {
Toast.makeText(CartActivity.this, "Your sms has failed...",
Toast.LENGTH_LONG).show();
ex.printStackTrace();
}
如果要根据结构在特定编号上获取所有productName and quantity
,可以使用此功能
DatabaseReference reff = FirebaseDatabase.getInstance().getReference("Cart List");
final DatabaseReference reff2= FirebaseDatabase.getInstance().getReference("Cart List");
reff.child("user View").child("09553706928").child("Products").addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
for(DataSnapshot snap: dataSnapshot.getChildren()){
String getDate = snap.getKey();
reff2.child("user View").child("09553706928").child("Products").child(getDate).addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
for(DataSnapshot snap1: dataSnapshot.getChildren()){
String myProductName = snap1.child("ProductName").getValue(String.class);
Toast.makeText(getApplicationContext(),myProductName,Toast.LENGTH_SHORT).show();
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
并在您的方法setSMSData()
private void setSMSData(String productName,String quantity) {
// add the phone number in the data
Uri uri = Uri.parse("smsto:" + "09257777547");
Intent smsSIntent = new Intent(Intent.ACTION_SENDTO, uri);
// add the message at the sms_body extra field
smsSIntent.putExtra("sms_body", "Order "+ productName+":"+quantity+" (Sent Via
SKIP MOBILE)");
try{
startActivity(smsSIntent);
} catch (Exception ex) {
Toast.makeText(CartActivity.this, "Your sms has
failed...",
Toast.LENGTH_LONG).show();
ex.printStackTrace();
}
}
});
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