java在Android中用firebase数据动态填充表行
所以我想从firebase数据库动态地将数据添加到我的表中 这是我的数据库的图像。我想用数据库中的数据填充我的表行 表中的产品名称应为royal和royal Glight，表中的阴影名称应为数据库中阴影部分下的名称，如rb3、白银、黄金，但黄金和白银不能属于royal产品名称
这是我的Java代码
package com.example.stockmanagementsystem;
public class PurchaseReport extends AppCompatActivity {
ArrayList<String> shadeNameList;
ArrayList<String> productNameList;
ArrayList<String> litreList = new ArrayList<>();
TableLayout tableLayout;
TableRow tableRow;
DatabaseReference databaseReference,databaseReference1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_purchase_report);
tableLayout = findViewById(R.id.purchase_report_layout);
//root instance
databaseReference = FirebaseDatabase.getInstance().getReference();
productNameList = new ArrayList<>();
shadeNameList= new ArrayList<>();
productList();
final Handler handler = new Handler();
final int delay = 1000;
handler.postDelayed(new Runnable() {
@Override
public void run() {
if(!productNameList.isEmpty()){
for (int i=0 ; i<productNameList.size();i++){
databaseReference1 = FirebaseDatabase.getInstance().
getReference(productNameList.get(i)).child("shade");
shadeList();
if(!shadeNameList.isEmpty()) {
for (int j = 0; j < shadeNameList.size(); j++) {
final int jNum = j;
tableRow = new TableRow(PurchaseReport.this);
TextView v1 = new TextView(PurchaseReport.this);
v1.setText(String.valueOf(i + 1));
v1.setTextColor(Color.RED);
v1.setBackgroundResource(R.drawable.border_row);
v1.setGravity(Gravity.CENTER);
v1.setTextSize(18);
tableRow.addView(v1);
TextView v2 = new TextView(PurchaseReport.this);
v2.setText("27/12/2020");
v2.setTextColor(Color.RED);
v2.setBackgroundResource(R.drawable.border_row);
v2.setGravity(Gravity.CENTER);
v2.setTextSize(18);
tableRow.addView(v2);
TextView v3 = new TextView(PurchaseReport.this);
v3.setText(productNameList.get(i));
v3.setTextColor(Color.RED);
v3.setBackgroundResource(R.drawable.border_row);
v3.setGravity(Gravity.CENTER);
v3.setTextSize(18);
tableRow.addView(v3);
final TextView v4 = new TextView(PurchaseReport.this);
databaseReference1.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
if(snapshot.hasChild(shadeNameList.get(jNum))){
v4.setText(shadeNameList.get(jNum));
v4.setTextColor(Color.RED);
v4.setBackgroundResource(R.drawable.border_row);
v4.setGravity(Gravity.CENTER);
v4.setTextSize(18);
Log.i("V4", String.valueOf(v4.getText()));
}
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
}
});
tableRow.addView(v4);
TextView v5 = new TextView(PurchaseReport.this);
v5.setText("2 Litre");
v5.setTextColor(Color.RED);
v5.setBackgroundResource(R.drawable.border_row);
v5.setGravity(Gravity.CENTER);
v5.setTextSize(18);
tableRow.addView(v5);
TextView v6 = new TextView(PurchaseReport.this);
v6.setText("2");
v6.setTextColor(Color.RED);
v6.setBackgroundResource(R.drawable.border_row);
v6.setGravity(Gravity.CENTER);
v6.setTextSize(18);
tableRow.addView(v6);
TextView v7 = new TextView(PurchaseReport.this);
v7.setText("12");
v7.setTextColor(Color.RED);
v7.setBackgroundResource(R.drawable.border_row);
v7.setGravity(Gravity.CENTER);
v7.setTextSize(18);
tableRow.addView(v7);
TextView v8 = new TextView(PurchaseReport.this);
v8.setText("123");
v8.setTextColor(Color.RED);
v8.setBackgroundResource(R.drawable.border_row);
v8.setGravity(Gravity.CENTER);
v8.setTextSize(18);
tableRow.addView(v8);
tableLayout.addView(tableRow);
}
}else{
handler.postDelayed(this,delay);
}
}
}else{
handler.postDelayed(this,delay);
}
}
},delay);
}
private void shadeList() {
ValueEventListener eventListener = new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
for(DataSnapshot ds : dataSnapshot.getChildren()) {
//adding name to the arrayList
shadeNameList.add(ds.getKey());
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
Log.d("TAG", databaseError.getMessage());
}
};
databaseReference1.addListenerForSingleValueEvent(eventListener);
}
private void productList(){
ValueEventListener eventListener = new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
for(DataSnapshot ds : dataSnapshot.getChildren()) {
//adding name to the arrayList
productNameList.add(ds.getKey());
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
Log.d("TAG", databaseError.getMessage());
}
};
databaseReference.addListenerForSingleValueEvent(eventListener);
}
}
我想要的输出是
我得到的输出
任何帮助都将不胜感激
# 1 楼答案
对于动态内容，请使用RecycleView和带有ViewHolder的RecycleWebAdapter