Android下拉菜单 Spinner

[android]代码库

		myTextView = (TextView) findViewById(R.id.myTextView);
		mySpinner = (Spinner) findViewById(R.id.mySpinner);
		adapter = new ArrayAdapter(this, android.R.layout.simple_spinner_item,
				countriesStr);
		/* myspinner_dropdown为自定义下拉菜单样式定义在res/layout目录下 */
		adapter.setDropDownViewResource(R.layout.myspinner_dropdown);
		/* 将ArrayAdapter加入Spinner对象中 */mySpinner.setAdapter(adapter);
		/* 将mySpinner加入OnItemSelectedListener */
		mySpinner
				.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {
					@Override
					public void onItemSelected(AdapterView arg0, View arg1,
							int arg2, long arg3) {
						/* 将所选mySpinner的值带入myTextView中 */
						myTextView.setText("选择的是" + countriesStr[arg2]);
						/* 将mySpinner显示 */
						arg0.setVisibility(View.VISIBLE);
					}

					@Override
					public void onNothingSelected(AdapterView arg0) {
						// TODO Auto-generated method stub
					}
				});