使用Android系统的粘贴板管理服务及ClipboardManager通过addPrimaryClipChangedListener添加Listener来监听粘贴板的状态，很很简单的一个小功能~

1.首先创建一个Service在后台运行：

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

startService(intent);

另外同时在OnResume()中获得粘贴板复制的内容，用于在APP未启动或者Service被关闭时重新启动APP来弹出口令窗口

@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());

}

2.在Service管理粘贴板服务：

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

mClipboardManager.addPrimaryClipChangedListener(mPrimaryClipChangedListener);

3.在onPrimaryClipChanged()做想要的事情，例如弹出框：

使用WindowManager来显示弹出框

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();

点击弹出框，跳转activity

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);

}

});

很简单的小功能，不过应用的实际过程应该还会出现一些待解决的小问题