ImageSwitcher褪色箭头下一个和上一个图像切换按钮

即时通讯使用带有淡出箭头和缩放按钮的ImageSwitcher，唯一的问题是我无法设置按钮功能来更改图像。ImageSwitcher褪色箭头下一个和上一个图像切换按钮

下面是代码：

public class doloroso1 extends Activity implements 
OnTouchListener, AdapterView.OnItemSelectedListener, ViewSwitcher.ViewFactory { 

    private Integer[] mThumbIds = { 
       R.drawable.d11, 
       R.drawable.d12, 
       R.drawable.d13, 
       R.drawable.d14, 
       R.drawable.d15, 
       R.drawable.d16, 
       R.drawable.d17}; 


     private Integer[] mImageIds = { 
       R.drawable.d11, 
       R.drawable.d12, 
       R.drawable.d13, 
       R.drawable.d14, 
       R.drawable.d15, 
       R.drawable.d16, 
       R.drawable.d17}; 

    View prev,next,zoom; 
    Handler handler = new Handler(); 

     private void scheduleHideButtons() { 
      handler.removeCallbacks(hideButtonsRunnable); 
      handler.postDelayed(hideButtonsRunnable, 5000); 
     } 
     private Runnable hideButtonsRunnable = new Runnable() { 
      @Override public void run() { 
       fadeButtons(false); 
      } };  
      private void fadeButtons(final boolean fadeIn) { 
       if (fadeIn) { 
        scheduleHideButtons(); 
       } 
       Animation anim = AnimationUtils.loadAnimation(this, fadeIn?R.anim.fade_in:R.anim.fade_out); 
       prev.startAnimation(anim); 
       next.startAnimation(anim); 
       zoom.startAnimation(anim); 
       anim.setAnimationListener(new AnimationListener() { 
       @Override 
       public void onAnimationEnd(Animation animation) { 
         prev.setVisibility(fadeIn?View.VISIBLE:View.GONE); 
         next.setVisibility(fadeIn?View.VISIBLE:View.GONE); 
         zoom.setVisibility(fadeIn?View.VISIBLE:View.GONE); 
        } 
        @Override public void onAnimationRepeat(Animation animation) { } 
        @Override public void onAnimationStart(Animation animation) { }    
       });} 


    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 

     setContentView(R.layout.doloroso1); 


     mSwitcher = (ImageSwitcher) findViewById(R.id.Imagen); 
     mSwitcher.setFactory(this); 
     mSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, 
       android.R.anim.fade_in)); 
     mSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, 
       android.R.anim.fade_out)); 
     mSwitcher.setOnTouchListener(this);   
     prev = findViewById(R.id.anterior);   
     next = findViewById(R.id.siguiente); 
     zoom = findViewById(R.id.zoom); 
     scheduleHideButtons(); 



     Gallery g = (Gallery) findViewById(R.id.galeria); 
     g.setAdapter(new ImageAdapter(this)); 
     g.setOnItemSelectedListener(this); 

    } 

     public void onItemSelected(AdapterView<?> parent, View v, int position, long id) { 
      mSwitcher.setImageResource(mImageIds[position]);} 


     public void onClickListener1(final int position, View convertView, ViewGroup parentparent, View v, int id) { 
      next.setOnClickListener(new View.OnClickListener() { 
       public void onClick(View view) { 
        mSwitcher.setImageResource(mImageIds[position + 1]);}});   ; 
     } 


     public void onClickListener2(final int position, View convertView, ViewGroup parentparent, View v, int id) { 
      prev.setOnClickListener(new View.OnClickListener() { 
        public void onClick(View view) { 
         mSwitcher.setImageResource(mImageIds[position - 1]);}});} 




    public void onNothingSelected(AdapterView<?> parent) { 
    } 

    public View makeView() { 
     ImageView i = new ImageView(this); 
     i.setBackgroundColor(0xFF000000); 
     i.setScaleType(ImageView.ScaleType.FIT_CENTER); 
     i.setLayoutParams(new ImageSwitcher.LayoutParams(LayoutParams.FILL_PARENT, 
       LayoutParams.FILL_PARENT)); 
     return i; 
    } 

    private ImageSwitcher mSwitcher; 

    public class ImageAdapter extends BaseAdapter { 
     public ImageAdapter(Context c) { 
      mContext = c; 
     } 

     public int getCount() { 
      return mThumbIds.length; 
     } 

     public Object getItem(int position) { 
      return position; 
     } 

     public long getItemId(int position) { 
      return position; 
     } 

     public View getView(int position, View convertView, ViewGroup parent) { 
      ImageView i = new ImageView(mContext); 

      i.setImageResource(mThumbIds[position]); 
      i.setAdjustViewBounds(true); 
      i.setLayoutParams(new Gallery.LayoutParams(
        LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); 
      i.setBackgroundResource(R.styleable.galeria_android_galleryItemBackground); 
      return i; 
     } 




    } 



    @Override 
    public boolean onTouch(View v, MotionEvent event) { 
     if (event.getAction()==MotionEvent.ACTION_DOWN) { 
      if (prev.getVisibility()==View.GONE) { 
       fadeButtons(true); 
      } 
      else { 
       scheduleHideButtons(); 
      } 
     } 
     return false;} 


    private Context mContext; 
    }

来源

2011-05-16 Enrique Berrueta