如何从ImageButton切换到扩展片段android编程的下一页（调用另一个类）

Question

这是PagesFragment文件。

public class PagesFragment extends Fragment {

    public PagesFragment(){

    }
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.fragment_pages, container, false);


        ImageButton s1 = (ImageButton)rootView.findViewById(R.id.speakers_1);
        s1.setOnClickListener(listener);

        ImageButton s2 = (ImageButton)rootView.findViewById(R.id.speakers_2);
        s2.setOnClickListener(listener2);

        ImageButton s3 = (ImageButton)rootView.findViewById(R.id.speakers_3);
        s3.setOnClickListener(listener3);

        return rootView;

    }

    ImageButton.OnClickListener listener = new OnClickListener() {

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

    public void speak_1 (View theButton)
    {

        Intent i = new Intent(this.getActivity(),speaker1.class);
        startActivity(i);
    }
}

这是xml文件

<ImageButton
    android:id="@+id/speakers_1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/txtLabel"
    android:layout_marginLeft="17dp"
    android:layout_marginTop="17dp"
    android:onClick="speak_1"
    android:src="@drawable/speakers_1" />

如何拨打speak_1？我还想在单击ImageButton时切换到另一个xml。谢谢。

Answer 1

分别为每个ImageButton传递不同的侦听器非常奇怪。尝试这样做：

public class PagesFragment extends Fragment implements View.OnClickListener {

    public PagesFragment() {

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

            View rootView = inflater.inflate(R.layout.fragment_pages, container, false);

            ImageButton s1 = (ImageButton)rootView.findViewById(R.id.speakers_1);
            s1.setOnClickListener(this);

            ImageButton s2 = (ImageButton)rootView.findViewById(R.id.speakers_2);
            s2.setOnClickListener(this);

            ImageButton s3 = (ImageButton)rootView.findViewById(R.id.speakers_3);
            s3.setOnClickListener(this);

            return rootView;

    }

    @Override
    public void onClick(View v) {
        // here you can handle your ImageButton clicks

        int id = v.getId();
        if (id == R.id.speakers_1) {
            speak_1();
        } else if (id == R.id.speakers_2) {
            speak_2();
        } // etc...

    }

    public void speak_1() {
        Intent i = new Intent(this.getActivity(),speaker1.class);
        startActivity(i);
    }

    public void speak_2() {
        Intent i = new Intent(this.getActivity(),speaker2.class);
        startActivity(i);
    }

}

制作类名首字母的第一个字母也是一种好习惯，它是标准的命名约定（Speaker1而不是speaker1）。

Answer 2

要调用方法，请使用speak_1(arg0)

中的onClick()

示例

ImageButton.OnClickListener listener = new OnClickListener() {

    @Override
    public void onClick(View arg0) {
    speak_1(arg0);
    }
};

Answer 3

这样做：

public class PagesFragment extends Fragment implements View.OnClickListener{

    public PagesFragment(){

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.fragment_pages, container, false);


        ImageButton s1 = (ImageButton)rootView.findViewById(R.id.speakers_1);
        s1.setOnClickListener(this);

        ImageButton s2 = (ImageButton)rootView.findViewById(R.id.speakers_2);
        s2.setOnClickListener(this);

        ImageButton s3 = (ImageButton)rootView.findViewById(R.id.speakers_3);
        s3.setOnClickListener(this);

        return rootView;

    }

    public void speak_1(View theButton)
    {

        Intent i = new Intent(this.getActivity(),speaker1.class);
        startActivity(i);
    }

    @Override
    public void onClick(View view) {
        if(view instance of ImageButton)
            speak_1(view);
    }
}