选择旋转器项以转到其他页面

Question

我在代码中实现旋转器时遇到了问题。不太清楚它是怎么工作的。但是这里有一个我想做的简单的想法。（例如：点击旋转器，你有两个选项“第2页”和“第3页”。所以，如果你点击“第2页”，它会转到有新内容的第2页。有什么方法可以做到这一点吗？？

我也有图像按钮去下一页和返回。只想实现一个旋转框，这样你就可以更快地导航到不同的页面。

public class AppActivity extends Activity implements OnTouchListener  {

private MediaPlayer mp;
ImageButton button;
ImageButton button3;
ImageView imgView;

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


    final String[] spstr = getResources().getStringArray(R.array.spinnervalue);
    final Spinner sp = (Spinner)findViewById(R.id.spinner1);
    final ArrayAdapter<String> ar = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,spstr);
    sp.setAdapter(ar);

    sp.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> parent, View view,
                int position, long id) {

            String s=((TextView)view).getText().toString();
            if(s.equals("page2"))
                startActivity(new Intent(view.getContext(),App2Activity.class));
            if(s.equals("page3"))
                startActivity(new Intent(view.getContext(),App3Activity.class));

        }

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

        }


    });


}



public void addListenerOnButton() {



    final Context context = this;
    button3  = (ImageButton) this.findViewById(R.id.imageButton5);
    button3.setOnTouchListener(this);


    mp = MediaPlayer.create(this, R.raw.vanilla_twilight);




    button = (ImageButton) findViewById(R.id.imageButton1);
    button.setOnClickListener(new OnClickListener() {


        @Override
        public void onClick(View arg0) {

            Intent intent = new Intent(context, App2Activity.class);
                        startActivity(intent);   

        }

    });

}

@Override
 public boolean onTouch(View v, MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_DOWN) {
        MediaPlayer mp = MediaPlayer.create(getBaseContext(),
                R.raw.vanilla_twilight);
        mp.start();
        mp.setOnCompletionListener(new OnCompletionListener() {

            @Override
            public void onCompletion(MediaPlayer mp) {
                mp.release();
            }
        });
    };
    return true;
}

}

<Spinner
    android:id="@+id/spinner1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true" />

05-22 01:32:40.058:E/SpannableStringBuilder(16206):SPAN_EXCLUSIVE_EXCLUSIVE跨距长度不能为零05-22 01:32:40.058:E/SpannableStringBuilder(16206):SPAN_EXCLUSIVE_EXCLUSIVE跨距长度不能为零

资源第2页第3页

Answer 1

使用startactivity打开其他活动，它需要基本的intent

sp.setOnItemSelectedListener(new OnItemSelectedListener()
{
    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
    {
        String s=((TextView)arg1).getText().toString();

        if(s.equals("page2"))
            startActivity(new Intent(view.getContext(), AppActivity2.class));

        if(s.equals("page3"))
            startActivity(new Intent(view.getContext(), AppActivity3.class));
    }
});

您在参考资料中的数组可能没有正确设置。

它看起来应该类似于这样：

<string-array name="spinnervalue">
    <item>page2</item>
    <item>page3</item>
</string-array>