Android Spinner von SQLite wirkt seltsam

Question

I 3 Spinnereien haben

1) Array Spinner

2) XML-Spinner und

3) SQLite Cursor Spinner

Als ich meinen dritten Spinner hinzugefügt , begann sich die Seite seltsam zu benehmen. Die Spinner 1 & 2 begannen im Spinner 3 Bereich zu erscheinen. Die Werte von Cursor sind in Spinner 3 vorhanden. Wenn ich irgendeinen Wert auswähle, funktioniert TOAST perfekt, aber der Wert wird nicht ausgewählt.

Layout-Datei: spinner_demo_main.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical" 
tools:context="com.training.sqlitelistviewdemo.SpinnerDemo"> 

<TextView 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Select Country" 
    android:textColor="#000000" 
    android:textSize="20sp" /> 

<Spinner 
    android:id="@+id/spCountries" 
    style="@android:style/Widget.Holo.Light.Spinner" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:entries="@array/country_arrays" 
    android:prompt="@string/country_prompt" 
    android:spinnerMode="dialog"> 

</Spinner> 

<TextView 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Select Business Type" 
    android:textColor="#000000" 
    android:textSize="20sp" /> 

<Spinner 
    android:id="@+id/spBussinessType" 
    style="@style/Base.Widget.AppCompat.Spinner.Underlined" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:prompt="@string/business_prompt"> 

</Spinner> 


<TextView 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Select Shop Name" 
    android:textColor="#000000" 
    android:textSize="20sp" /> 

<Spinner 
    android:id="@+id/sp_Shops" 
    style="@android:style/Widget.Holo.Light.Spinner" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:prompt="@string/select_shops" 
    android:spinnerMode="dialog"> 
</Spinner> 


<Button 
    android:id="@+id/submit" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_gravity="center" 
    android:layout_margin="10dp" 
    android:text="Submit" 
    android:textSize="15sp" /> 

Meine Java-Datei: SpinnerDemo.java

package com.training.sqlitelistviewdemo; 

import android.database.Cursor; 
import android.os.Bundle; 
import android.support.v4.widget.SimpleCursorAdapter; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.widget.Toolbar; 
import android.view.View; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.Spinner; 
import android.widget.TextView; 
import android.widget.Toast; 

public class SpinnerDemo extends AppCompatActivity implements View.OnClickListener { 

    // uicontrols 
    Spinner spCountries; 
    Spinner spBusinessType; 
    Button btnsubmit; 

    //class members 
    String businessType[] = { "Automobile", "Food", "Computers", "Education", "Personal", "Travel" }; 
    ArrayAdapter<String> adapterBusinessType; 

    // local members 
    String sbusinesstype,scountry; 

    // SQLite Parameters Start 

    private DatabaseManager dbManager; 
    private TextView tv_Text; 
    private Spinner sp; 

    private SimpleCursorAdapter adapter; 

    // final String[] from = new String[] { DatabaseHelper._ID, DatabaseHelper.SHOPNAME, DatabaseHelper.SHOPADDRESS }; 
    final String[] from = new String[] {DatabaseHelper.SHOPNAME}; 

    //final int[] to = new int[] { R.id.id, R.id.shopname, R.id.shopaddress }; 
    final int[] to = new int[] {android.R.id.text1}; 

    // SQLite Parameters End 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.spinner_demo_main); 
     //Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
     //setSupportActionBar(toolbar); 

     spCountries = (Spinner) findViewById(R.id.spCountries); 
     spBusinessType = (Spinner) findViewById(R.id.spBussinessType); 

     btnsubmit=(Button)findViewById(R.id.submit); 
     btnsubmit.setOnClickListener(this); 

     // Initialize and set Adapter 
     adapterBusinessType = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, businessType); 
     adapterBusinessType.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
     spBusinessType.setAdapter(adapterBusinessType); 

     // Country Item Selected Listener 
     spCountries.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 

      @Override 
      public void onItemSelected(AdapterView<?> adapter, View v, int position, long id) { 
       // On selecting a spinner item 
       scountry = adapter.getItemAtPosition(position).toString(); 

       // Showing selected spinner item 
       Toast.makeText(getApplicationContext(), 
         "Selected Country : " + scountry, Toast.LENGTH_LONG).show(); 
      } 

      @Override 
      public void onNothingSelected(AdapterView<?> arg0) { 
       // TODO Auto-generated method stub 

      } 
     }); 
     // Business Type Item Selected Listener 
     spBusinessType.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 

      @Override 
      public void onItemSelected(AdapterView<?> adapter, View v, 
             int position, long id) { 
       // On selecting a spinner item 
       sbusinesstype = adapter.getItemAtPosition(position).toString(); 

       // Showing selected spinner item 
       Toast.makeText(getApplicationContext(), 
         "Bussiness Type : " + sbusinesstype, Toast.LENGTH_LONG).show(); 
      } 

      @Override 
      public void onNothingSelected(AdapterView<?> arg0) { 
       // TODO Auto-generated method stub 

      } 
     }); 
// SQLite Spinner Code Starts 

     dbManager = new DatabaseManager(this); 
     dbManager.open(); 
     Cursor cursor = dbManager.fetch_Shop(); 
     sp = (Spinner) findViewById(R.id.sp_Shops); 
     // sp.setEmptyView(findViewById(R.id.empty)); 

     adapter = new SimpleCursorAdapter(this, R.layout.spinner_demo_main, cursor, from, to, 0); 
     adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
     sp.setAdapter(adapter); 
     //sp.setSelection(1); 
     //adapter.notifyDataSetChanged(); 

     sp.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
      @Override 
      public void onItemSelected(AdapterView<?> adapterView, View view, int position, long l) { 
       sp.setSelection(position); 

       Cursor shopCur=(Cursor)sp.getSelectedItem(); 
       String shopNamecol=shopCur.getString(shopCur.getColumnIndex(DatabaseHelper.SHOPNAME)); 
       String Rowid = shopCur.getString(shopCur.getColumnIndex(DatabaseHelper._ID)); 
       Toast.makeText(getApplicationContext(), "You Selected - " + shopNamecol + " - " + Rowid + " " + position, Toast.LENGTH_LONG).show(); 
      } 

      @Override 
      public void onNothingSelected(AdapterView<?> adapterView) { 

      } 
     }); 



// SQLite Spinner Code Ends 
    } 

    @Override 
    public void onClick(View v) { 
     Toast.makeText(getApplicationContext(), "You have selected " + scountry + " and " + sbusinesstype,Toast.LENGTH_LONG).show(); 
    } 

} 

Spinner Screen Shot

Jede Hilfe würde wirklich geschätzt werden.

Answer 1

das Problem ..Phew

Gefunden

aktualisiert die unterhalb der Linie

adapter = new SimpleCursorAdapter(this, R.layout.spinner_demo_main, cursor, from, to, 0); 

spinner_demo_main - Das ist meine Aktivitätsklasse - stattdessen sollten wir android.R.layout.simple_spinner_item

als geben werden unter

adapter = new SimpleCursorAdapter(this, android.R.layout.simple_spinner_item, cursor, from, to, 0); 

Answer 2

dieses Problem zu lösen, die drei Spinner in Java-Datei deklariert und initialisiert sie in Java-Datei

Spinner spCountries; 
Spinner spBusinessType; 
Spinner shops; 

//class members 
String businessType[] = { "Automobile", "Food", "Computers", "Education", "Personal", "Travel" }; 
ArrayAdapter<String> adapterBusinessType; 
ArrayAdapter<String> adapterspCountriesType; 
ArrayAdapter<String> adaptershopsType; 

jetzt setOnItemSelectedListener hinzufügen und den mit dem Schalter Fall behandeln.

Es funktioniert gut für mich.