本文实例讲述了Android编程实现GridView控件点击图片变暗效果的方法。分享给大家供大家参考，具体如下：

@Overridepublic void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); grid = (GridView) findViewById(R.id.grid); grid.setAdapter(new GridAdapter()); grid.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { Toast.makeText(MainActivity.this, "ddd", 1000).show(); } });}class GridAdapter extends BaseAdapter { @Override public int getCount() { return imgs.length; } @Override public Object getItem(int arg0) { return arg0; } @Override public long getItemId(int arg0) { return arg0; } @Override public View getView(int arg0, View view, ViewGroup arg2) { if (view == null) { holder = new ViewHolder(); view = LayoutInflater.from(MainActivity.this).inflate( R.layout.imgs, null); holder.view = (ImageView) view.findViewById(R.id.gridimg); view.setTag(holder); } else { holder = (ViewHolder) view.getTag(); } holder.view.setImageResource(imgs[arg0]); holder.view.setOnTouchListener(onTouchListener); return view; } class ViewHolder { ImageView view; } public OnTouchListener onTouchListener = new View.OnTouchListener() { @Override public boolean onTouch(View view, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_UP: changeLight((ImageView) view, 0); // onclick break; case MotionEvent.ACTION_DOWN: changeLight((ImageView) view, -80); break; case MotionEvent.ACTION_MOVE: // changeLight(view, 0); break; case MotionEvent.ACTION_CANCEL: changeLight((ImageView) view, 0); break; default: break; } return true; } };}private void changeLight(ImageView imageview, int brightness) { ColorMatrix matrix = new ColorMatrix(); matrix.set(new float[] { 1, 0, 0, 0, brightness, 0, 1, 0, 0, brightness, 0, 0, 1, 0, brightness, 0, 0, 0, 1, 0 }); imageview.setColorFilter(new ColorMatrixColorFilter(matrix));}

更多关于Android相关内容感兴趣的读者可查看本站专题：《Android控件用法总结》、《Android开发入门与进阶教程》、《Android视图View技巧总结》、《Android编程之activity操作技巧总结》、《Android数据库操作技巧总结》及《Android资源操作技巧汇总》

希望本文所述对大家Android程序设计有所帮助。