如何在android中添加微调值

Question

嗨..这是我的代码我想在我的微调中添加数值..但我不知道我是如何做到这一点的.. ex A + = 5 等待你的帮助

 

import java.util.ArrayList; 
import java.util.List; 

import android.os.Bundle; 
import android.app.Activity; 
import android.view.Menu; 
import android.view.View; 
import android.widget.AdapterView.OnItemSelectedListener; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Spinner; 
import android.widget.Toast; 
import android.view.View.OnClickListener; 


public class MainActivity extends Activity { 

    private Spinner spinner1, spinner2; 
     private Button f; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     addItemsOnSpinner2(); 
     addListenerOnButton(); 
     addListenerOnSpinnerItemSelection(); 

    } 
    EditText e1 = (EditText) findViewById(R.id.o1); 
    Button m = (Button) findViewById(R.id.b22); 

public void addItemsOnSpinner2() { 

    spinner2 = (Spinner) findViewById(R.id.spinner2); 
    List<String> list = new ArrayList<String>(); 
    list.add("A+"); 
    list.add("A"); 
    list.add("B"); 
    ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, 
     android.R.layout.simple_spinner_item, list); 
    dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    spinner2.setAdapter(dataAdapter); 


    spinner1 = (Spinner) findViewById(R.id.spinner1); 
    List<String> list1 = new ArrayList<String>(); 
    list1.add("A+"); 
    list1.add("A"); 
    list1.add("B"); 
    ArrayAdapter<String> dataAdapter1 = new ArrayAdapter<String>(this, 
     android.R.layout.simple_spinner_item, list1); 
    dataAdapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    spinner1.setAdapter(dataAdapter1); 
} 




public void addListenerOnSpinnerItemSelection() { 
    spinner1 = (Spinner) findViewById(R.id.spinner1); 
    spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener()); 
} 

public void addListenerOnButton() { 

    spinner1 = (Spinner) findViewById(R.id.spinner1); 
    spinner2 = (Spinner) findViewById(R.id.spinner2); 
Button f=(Button)findViewById(R.id.button); 


f.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      int gr1=Integer.parseInt(e1.getText().toString()); 

     Toast.makeText(MainActivity.this, 
     "OnClickListener : " + 
       "\nSpinner 1 : "+ String.valueOf(spinner1.getSelectedItem()) + 
       "\nSpinner 2 : "+ String.valueOf(spinner2.getSelectedItem()), 
      Toast.LENGTH_SHORT).show(); 


     } 

    }); 
} 
} 

的printf（ “％d \ n” 个，42）;/*问题又是什么 ？ */ 我不知道哪儿，我要补充谁在微调中添加值的代码

Answer 1

public class MainActivity extends Activity { 

private SharedPreferences prefs; 
private String prefName = "spinner_value"; 
int id=0; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_main); 

final List<String> list=new ArrayList<String>(); 
list.add("Item 1"); 
list.add("Item 2"); 
list.add("Item 3"); 
list.add("Item 4"); 
list.add("Item 5"); 

final Spinner sp=(Spinner) findViewById(R.id.spinner1); 
ArrayAdapter<String> adp= new ArrayAdapter<String>(this, 
           android.R.layout.simple_list_item_1,list); 
adp.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
sp.setAdapter(adp); 

prefs = getSharedPreferences(prefName, MODE_PRIVATE); 
id=prefs.getInt("last_val",0); 
sp.setSelection(id); 

sp.setOnItemSelectedListener(new OnItemSelectedListener() { 

@Override 
public void onItemSelected(AdapterView<?> arg0, View arg1,int pos, long arg3) { 
// TODO Auto-generated method stub 

prefs = getSharedPreferences(prefName, MODE_PRIVATE); 
SharedPreferences.Editor editor = prefs.edit(); 
//---save the values in the EditText view to preferences--- 
editor.putInt("last_val", pos); 

//---saves the values--- 
editor.commit(); 

Toast.makeText(getBaseContext(), sp.getSelectedItem().toString(), Toast.LENGTH_SHORT).show(); 

} 

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

} 
}); 

} 

Answer 2

尝试类似的东西：

testSpinner = (Spinner) findViewById(R.id.testSpinner); 
ArrayList<String> list = <value come from somewhere> 
testSpinner = (Spinner) findViewById(R.id.testSpinner); 
MyAdapter testAdapter = new MyAdapter(getApplicationContext(), R.layout.spinner_style, list); 
testSpinner.setAdapter(testAdapter); 
testSpinner.setSelection(testAdapter.getCount());