android - 使用 Spinner 开始一个新的 Activity

Question

我想知道是否有人知道如何在无需按下按钮的情况下更改微调器的值来启动新 Activity 。
我已经在网上搜索了几个小时，但我找不到任何可以引导我走向正确方向的东西。所以我希望这里有人可以帮助我。

这只是我的标准微调器代码:

protected void onCreate(Bundle savedInstanceState) {

    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.share);

    Button view = (Button) findViewById(R.id.button1);
    view.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub
            startActivity(new Intent("net.thinkbin.TUTORIAL1"));
            overridePendingTransition(0, 0);
            finish();
        }
    });

    Button menu = (Button) findViewById(R.id.buttonhome);
    menu.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub

            // custom dialog
            final Dialog dialog = new Dialog(context);
            dialog.setContentView(R.layout.custom);

            // set the custom dialog components - text, image and button
            TextView text = (TextView) dialog.findViewById(R.id.text);
            text.setText("Loading...");
            ImageView image = (ImageView) dialog.findViewById(R.id.image);
            image.setImageResource(R.drawable.hourglass);

            dialog.show();
            Thread th = new Thread(new Runnable() {
                public void run() {

                    startActivity(new Intent("net.thinkbin.MENU"));
                    overridePendingTransition(0, 0);
                    dialog.dismiss();
                    finish();

                }
            });
            th.start();
        }
    });

    ArrayAdapter<CharSequence> adapter = ArrayAdapter
            .createFromResource(this, R.array.spinnerfood,
                    android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    Spinner s = (Spinner) findViewById(R.id.spinner1);
    s.setAdapter(adapter);

Answer 1

设置 setOnItemSelectedListener,,,,如果选择某项 onItemSelected 被调用，否则 onNothingSelected 被调用

 s.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                    int arg2, long arg3) {
                 String str = (String) arg0.getSelectedItem();

                             //here print selected value...
                 System.out.println("String is :: " + str);

                             //And StartActivity here...

                    Intent intent = new Intent(YourActivity.this,SecondActivity.class);
                    startActivity(intent);

            }

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

            }
        });