我制作了这个移动应用程序，可以在按下按钮后添加表格行。每行包含一个 Edittext、四个下拉菜单(旋转器)和一个删除行的按钮。当我按下“添加”按钮后，每一行就像一个重复的行。现在，我唯一的问题是如何将该特定内容保存到 firebase 的实时数据库或 firestore 中。你们有关于如何做到这一点的建议、任何资源吗？还是这个问题很广泛？我可以具体说明一些你感到困惑的事情。
我可以保存包含文档标题的编辑文本，并且它可以成功工作，但表行除外，因为它包含多种数据类型。我刚刚听说 firebase 只能保存原始数据类型。
这是与问题相关的代码，因此我不必粘贴所有 357 行代码。
private android.support.v7.widget.Toolbar maintoolbar, editToolBar;
private FirebaseAuth mAuth;
private FloatingActionButton fab;
private RelativeLayout layoutMain;
private RelativeLayout layoutButtons;
private RelativeLayout layoutContent;
private boolean isOpen = false;
private Button addnewRowButton, saveItButton;
private EditText titleofDoc;
private Context context = null;
private ProgressBar pb;
private DatabaseReference dr;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAuth = FirebaseAuth.getInstance();
dr = FirebaseDatabase.getInstance().getReference().child("Notes").child(mAuth.getCurrentUser().getUid());
maintoolbar = findViewById(R.id.mainToolBar);
setSupportActionBar(maintoolbar);
getSupportActionBar().setTitle("Files");
layoutMain = findViewById(R.id.mainLays);
layoutButtons = findViewById(R.id.layoutButtons);
layoutContent = findViewById(R.id.layoutContent);
addnewRowButton = findViewById(R.id.AddRow);
saveItButton = findViewById(R.id.SaveThis);
titleofDoc = findViewById(R.id.TitleofDoc);
editToolBar = findViewById(R.id.main_edit_toolbar);
pb = findViewById(R.id.progressBar2);
saveItButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String title = titleofDoc.getText().toString().trim();
if (!TextUtils.isEmpty(title)) {
pb.setVisibility(View.VISIBLE);
createNew(title);
pb.setVisibility(View.INVISIBLE);
} else {
Snackbar.make(v, "Fill Empty Fields", Snackbar.LENGTH_SHORT).show();
pb.setVisibility(View.INVISIBLE);
}
}
});
addnewRowButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
addNewRow();
}
});
fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
viewMenu();
}
});
}
这是创建表格行的方法。
private void addNewRow() {
final TableLayout tl = findViewById(R.id.tbllays);
String[] teamRoles = {"Director", "Marketing", "Team", "All"};
final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, teamRoles);
context = getApplicationContext();
//adds new row
final TableRow tbr = new TableRow(context);
TableRow.LayoutParams layoutParams = new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT);
tbr.setLayoutParams(layoutParams);
//add edittext to name the task
EditText editText = new EditText(context);
editText.setHint("Add Task");
tbr.addView(editText, 0);
//add spinner to assign teams
Spinner toDo = new Spinner(context);
toDo.setAdapter(adapter);
tbr.addView(toDo, 1);
//add spinner to assign teams
Spinner InProgress = new Spinner(context);
InProgress.setAdapter(adapter);
tbr.addView(InProgress, 2);
//add spinner to assign teams
Spinner Test = new Spinner(context);
Test.setAdapter(adapter);
tbr.addView(Test, 3);
//add spinner to assign teams
Spinner Done = new Spinner(context);
Done.setAdapter(adapter);
tbr.addView(Done, 4);
// Add a button in the second column
Button button = new Button(context);
button.setText("X");
tbr.addView(button, 5);
button.setBackgroundColor(Color.rgb(159, 168, 218));
// Get delete table row button.
Button deleteRowButton = (Button) button;
deleteRowButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
tbr.removeAllViews();
}
});
tl.addView(tbr);
}
这种方法只能保存标题，而不能保存内容(本例中为表格行)。
private void createNew(String title) {
if (mAuth.getCurrentUser() != null) {
final DatabaseReference newThingRef = dr.push();
final Map thingMap = new HashMap();
thingMap.put("title", title);
thingMap.put("timestamp", ServerValue.TIMESTAMP);
Thread mainThread = new Thread(new Runnable() {
@Override
public void run() {
newThingRef.setValue(thingMap).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful()) {
Toast.makeText(MainActivity.this, "Note added", Toast.LENGTH_SHORT).show();
Intent MainIntent = new Intent(MainActivity.this, MainActivity.class);
startActivity(MainIntent);
} else {
String error = task.getException().getMessage();
Toast.makeText(MainActivity.this, "ERROR: " + error, Toast.LENGTH_LONG).show();
}
}
});
}
});
mainThread.start();
} else {...}
}
这是xml文件(保存编辑器的部分)
<RelativeLayout
android:id="@+id/layoutContent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/mainToolBar"
>
<RelativeLayout
android:id="@+id/layoutButtons"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
android:gravity="center"
android:visibility="gone">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainEditor">
<LinearLayout
android:id="@+id/LinLay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="370dp">
<android.support.v7.widget.Toolbar
android:id="@+id/main_edit_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="?attr/actionBarTheme" />
<ProgressBar
android:id="@+id/progressBar2"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:indeterminate="true" />
<EditText
android:id="@+id/TitleofDoc"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/transparent"
android:ellipsize="end"
android:hint="@string/title"
android:importantForAutofill="no"
android:inputType=""
android:maxHeight="1dp"
android:maxLength="30"
android:maxLines="1"
android:padding="10dp"
tools:targetApi="o" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="10dp"
android:alpha=".3"
android:background="@android:color/black" />
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fillViewport="true">
<TableLayout
android:id="@+id/tbllays"
android:layout_width="wrap_content"
android:layout_height="match_parent">
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/AddRow"
style="?android:attr/buttonBarButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="0"
android:layout_weight=".1"
android:background="@color/colorAccent"
android:text="@string/add_row"
android:textColor="@color/colorPrimaryDark" />
<Button
android:id="@+id/SaveThis"
style="?android:attr/buttonBarButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="1"
android:layout_weight=".1"
android:background="@color/colorPrimaryDark"
android:text="@string/save" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent"
android:stretchColumns="*">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="0"
android:text="@string/task" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="1"
android:text="@string/to_do" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="2"
android:layout_weight=".1"
android:text="@string/in_progress" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="3"
android:layout_weight=".1"
android:text="@string/testing" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="4"
android:layout_weight=".1"
android:text="@string/done" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_column="5"
android:layout_weight=".1"
android:text="@string/delete" />
</TableRow>
</TableLayout>
</HorizontalScrollView>
</LinearLayout>
</ScrollView>
</RelativeLayout>
</RelativeLayout>
忽略用户部分，仅当用户登录时。
最佳答案
您需要在每个微调器的末尾添加一个监听器并将其存储在变量中，例如:
Spinner Done = new Spinner(context);
Done.setAdapter(adapter);
Done.setOnItemSelectedListner(this)
tbr.addView(Done, 4);
然后使用 DatabaseReference 存储此变量 Done
关于java - 有没有办法将表行保存到 Firebase 中？实时还是 Firestore？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/56070370/