[英]How to get Firebase Data using Spinner Android Studio Java
[英]How to get Result for RecyclerView using Spinner in Android Studio
你好你們能幫幫我嗎?
我正在做一個應用程序,它將顯示場所。 用戶還可以使用 Spinner 對其進行過濾以簡化搜索。 但我無法過濾 Spinner,結果似乎無法在 RecyclerView 中顯示
MainActivity.java
公共 class MainActivity 擴展 AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = getIntent();
EditText txtPremiseSearch = findViewById(R.id.txtPremiseSearch);
RecyclerView rcvPremise = findViewById(R.id.rcvPremises);
Spinner spnCategory = (Spinner) findViewById(R.id.spnCategory);
//Spinner
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, getResources().getStringArray(R.array.premise_type));
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spnCategory.setAdapter(adapter);
spnCategory.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
//txtPremiseSearch.setText(parent.getItemAtPosition(position).toString());
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
//Dummy list of premises
Vector<Premises> premises = new Vector<>();
Premises premises1 = new Premises(), premises2 = new Premises(), premises3 = new Premises();
premises1.setPremiseID("001");
premises1.setName("Medan Selera Presint 8");
premises1.setRole("Restaurant");
premises2.setPremiseID("002");
premises2.setName("Old Precint Cafe");
premises2.setRole("Cafe");
premises3.setPremiseID("003");
premises3.setName("Gloria Jean's Cafe");
premises3.setRole("Cafe");
premises.add(premises1);
premises.add(premises2);
premises.add(premises3);
Toast.makeText(this, "Welcome " + intent.getStringExtra("name") + " to the Administration module!", Toast.LENGTH_LONG).show();
rcvPremise.setAdapter(new PremisesAdapter(this, premises));
rcvPremise.setLayoutManager(new LinearLayoutManager(this));
可能是因為回收站視圖還沒有更新。 嘗試運行 setLayoutManager b4 setAdapter,然后再次聲明適配器並設置適配器,當用戶單擊微調器上的選定項目時
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.