Intent intent = new Intent(this,MainService.class); 
startService(intent); 

@Override 
protected void onResume() { 
 // TODO Auto-generated method stub 
 super.onResume(); 
 ClipboardManager mClipboardManager = (ClipboardManager)getSystemService(Context.CLIPBOARD_SERVICE); 
 Log.e("Copylistenerdemo", mClipboardManager.getPrimaryClip().getItemAt(0).getText().toString()); 
} 

mClipboardManager = (ClipboardManager)getSystemService(Context.CLIPBOARD_SERVICE); 
mClipboardManager.addPrimaryClipChangedListener(mPrimaryClipChangedListener); 

LayoutInflater layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);  
 final View floatView = layoutInflater.inflate(R.layout.floater, null); 
 final WindowManager mWindowManager = (WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE); 
 LayoutParams params = new WindowManager.LayoutParams(); 
 params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;//系统内部错误提示，显示于所有内容之上 
 params.format = PixelFormat.RGBA_8888; 
 params.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL 
  | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE; //当窗口可以获得焦点（没有设置FLAG_NOT_FOCUSALBE选项）时，仍然将窗口范围之外的点设备事件（鼠标、触摸屏）发送给后面的窗口处理 
 params.width = WindowManager.LayoutParams.MATCH_PARENT; 
 params.height = WindowManager.LayoutParams.WRAP_CONTENT; 
 params.gravity = Gravity.LEFT | Gravity.TOP; 
 params.x = 0; 
 params.y = 0; 
 mWindowManager.addView(floatView, params); 
 ObjectAnimator animatorShow = ObjectAnimator.ofFloat(floatView, "alpha", 0.0f,1.0f); 
 animatorShow.setDuration(500); 
 animatorShow.start(); 
 ObjectAnimator animatorHide = ObjectAnimator.ofFloat(floatView, "alpha", 1.0f,0.0f); 
 animatorHide.setDuration(500); 
 animatorHide.setStartDelay(3000); 
 animatorHide.start(); 

floatView.setOnClickListener(new OnClickListener() { 
 @Override 
 public void onClick(View v) { 
 // TODO Auto-generated method stub 
 Toast.makeText(MainService.this, "点击淘口令", Toast.LENGTH_SHORT).show(); 
 Intent intent = new Intent(); 
 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
 intent.setClass(MainService.this, xxActivity.class); 
 startActivity(intent); 
 } 
}); 

ClipboardManager mClipboardManager = mClipboardManager = 
 (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);

 ClipData mClipData;
 String text = "hello world";
 mClipData = ClipData.newPlainText("test", text);
 mClipboardManager.setPrimaryClip(mClipData); 

ClipData clipData = mClipboardManager.getPrimaryClip();
 ClipData.Item item = clipData.getItemAt(0);
 String text = item.getText().toString();