相关疑难解决方法(0)

我有一个微调器,其中很少有来自strings.xml的值,我想使用Button的onclick事件动态地从编辑文本填充该微调器,但不知何故它不起作用,我每次都得到强制关闭.任何帮助将不胜感激.

package com.example.expense;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;

public class Expense3 extends Activity {
    //private TextView t1;

    private Spinner spinner;
    private EditText Text;
    private ArrayAdapter<CharSequence> adapter;
    private Button addButton;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Text = (EditText)findViewById(R.id.widget4);
        addButton = (Button)findViewById(R.id.add_new);

        spinner = (Spinner) findViewById(R.id.hhj);

         adapter = ArrayAdapter.createFromResource(
                this, R.array.planets_array, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(adapter);





        this.addButton.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {

                addNewSpinnerItem();
         }

            });

        }

    protected …