package com.andieguo.spinnerdemo;

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;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

	private static final String[] m = { "北京", "上海", "重慶", "廣州", "深圳" };
	private List<String> countries;
	private TextView textview;
	private EditText editText;
	private Spinner spinner;
	private TextView textview2;
	private Spinner spinner2;
	private ArrayAdapter<String> adapter;
	private ArrayAdapter adapter2;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		countries = new ArrayList<String>();
		for (int i = 0; i < m.length; i++) {// 將陣列轉化成list集合,方便adapter.add()操作
			countries.add(m[i]);
		}
		// =============使用List集合作為資料來源
		// ===================================================//
		spinner = (Spinner) findViewById(R.id.spinner);
		textview = (TextView) findViewById(R.id.spinnerText);
		editText = (EditText) findViewById(R.id.editText);

		// 將可選內容與ArrayAdapter連線起來
		adapter = new ArrayAdapter<String>(this,
				android.R.layout.simple_spinner_item, countries);
		// 設定下拉列表的風格
		adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
		// 將adapter 新增到spinner中
		spinner.setAdapter(adapter);
		// 新增事件Spinner事件監聽
		spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

			@Override
			public void onItemSelected(AdapterView<?> parent, View view,
					int position, long id) {
				textview.setText("你的城市是：" + adapter.getItem(position));
			}

			@Override
			public void onNothingSelected(AdapterView<?> parent) {
				// TODO Auto-generated method stub
			}
		});
		// 設定預設值
		spinner.setVisibility(View.VISIBLE);

		// =============使用XML作為資料來源
		// ===================================================//
		spinner2 = (Spinner) findViewById(R.id.spinner2);
		textview2 = (TextView) findViewById(R.id.spinnerText2);
		// 將可選內容與ArrayAdapter連線起來
		adapter2 = ArrayAdapter.createFromResource(this, R.array.plantes,
				android.R.layout.simple_spinner_item);
		// 設定下拉列表的風格
		adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
		// 將adapter 新增到spinner中
		spinner2.setAdapter(adapter2);
		// 新增事件Spinner事件監聽
		spinner2.setOnItemSelectedListener(new OnItemSelectedListener() {

			@Override
			public void onItemSelected(AdapterView<?> parent, View view,
					int position, long id) {
				textview2.setText("你的手機型號是：" + adapter2.getItem(position));
			}

			@Override
			public void onNothingSelected(AdapterView<?> parent) {
				// TODO Auto-generated method stub
			}
		});
		// 設定預設值
		spinner2.setVisibility(View.VISIBLE);

	}

	public void add(View v) {
		String newCountry = editText.getText().toString();
		// 先比較新增的值是否存在，不存在才可以新增
		for (int i = 0; i < adapter.getCount(); i++) {
			if (newCountry.equals(adapter.getItem(i))) {
				Toast.makeText(this, "該城市已存在", 1).show();
				editText.setText("");
				return;
			}
		}
		if (!newCountry.equals("")) {
			adapter.add(newCountry);
			int position = adapter.getPosition(newCountry);
			spinner.setSelection(position);
			editText.setText("");
			Toast.makeText(this, "新增城市成功", 1).show();
		}
	}

	public void delete(View v) {
		if(spinner.getSelectedItem()!= null){
			//刪除spinner值
			adapter.remove(spinner.getSelectedItem().toString());
			textview.setText("你的城市是：" +"");
		}
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}