android悬浮窗源码，显示监视内容悬浮窗口

package hq.memFloat.service; //Download by http://www.codefans.net import hq.memFloat.R; import hq.memFloat.model.MyApplication; import hq.memFloat.model.memInfo; import java.util.Timer; import android.app.Activity; import android.app.Service; import android.content.Intent; import android.content.SharedPreferences; import android.os.Handler; import android.os.IBinder; import android.util.Log; import android.view.Gravity; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.WindowManager; import android.view.View.OnClickListener; import android.view.View.OnTouchListener; import android.widget.ImageView; import android.widget.TextView; public class FloatService extends Service { WindowManager wm = null; WindowManager.LayoutParams wmParams = null; View view; private float mTouchStartX; private float mTouchStartY; private float x; private float y; int state; TextView tx1; TextView tx; ImageView iv; private float StartX; private float StartY; int delaytime=1000; @Override public void onCreate() { Log.d("FloatService", "onCreate"); super.onCreate(); view = LayoutInflater.from(this).inflate(R.layout.floating, null); tx = (TextView) view.findViewById(R.id.memunused); tx1 = (TextView) view.findViewById(R.id.memtotal); tx.setText("" + memInfo.getmem_UNUSED(this) + "KB"); tx1.setText("" + memInfo.getmem_TOLAL() + "KB"); iv = (ImageView) view.findViewById(R.id.img2); iv.setVisibility(View.GONE); createView(); handler.postDelayed(task, delaytime); } private void createView() { SharedPreferences shared = getSharedPreferences("float_flag", Activity.MODE_PRIVATE); SharedPreferences.Editor editor = shared.edit(); editor.putInt("float", 1); editor.commit(); // 获取WindowManager wm = (WindowManager) getApplicationContext().getSystemService("window"); // 设置LayoutParams(全局变量）相关参数 wmParams = ((MyApplication) getApplication()).getMywmParams(); wmParams.type = 2002; wmParams.flags |= 8; wmParams.gravity = Gravity.LEFT | Gravity.TOP; // 调整悬浮窗口至左上角 // 以屏幕左上角为原点，设置x、y初始值 wmParams.x = 0; wmParams.y = 0; // 设置悬浮窗口长宽数据 wmParams.width = WindowManager.LayoutParams.WRAP_CONTENT; wmParams.height = WindowManager.LayoutParams.WRAP_CONTENT; wmParams.format = 1; wm.addView(view, wmParams); view.setOnTouchListener(new OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { // 获取相对屏幕的坐标，即以屏幕左上角为原点 x = event.getRawX(); y = event.getRawY() - 25; // 25是系统状态栏的高度 Log.i("currP", "currX" + x + "====currY" + y);// 调试信息 switch (event.getAction()) { case MotionEvent.ACTION_DOWN: state = MotionEvent.ACTION_DOWN; StartX = x; StartY = y; // 获取相对View的坐标，即以此View左上角为原点 mTouchStartX = event.getX(); mTouchStartY = event.getY(); Log.i("startP", "startX" + mTouchStartX + "====startY" + mTouchStartY);// 调试信息 break; case MotionEvent.ACTION_MOVE: state = MotionEvent.ACTION_MOVE; updateViewPosition(); break; case MotionEvent.ACTION_UP: state = MotionEvent.ACTION_UP; updateViewPosition(); showImg(); mTouchStartX = mTouchStartY = 0; break; } return true; } }); iv.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Intent serviceStop = new Intent(); serviceStop.setClass(FloatService.this, FloatService.class); stopService(serviceStop); } }); } public void showImg() { if (Math.abs(x - StartX) < 1.5 && Math.abs(y - StartY) < 1.5 && !iv.isShown()) { iv.setVisibility(View.VISIBLE); } else if (iv.isShown()) { iv.setVisibility(View.GONE); } } private Handler handler = new Handler(); private Runnable task = new Runnable() { public void run() { // TODO Auto-generated method stub dataRefresh(); handler.postDelayed(this, delaytime); wm.updateViewLayout(view, wmParams); } }; public void dataRefresh() { tx.setText("" + memInfo.getmem_UNUSED(this) + "KB"); tx1.setText("" + memInfo.getmem_TOLAL() + "KB"); } private void updateViewPosition() { // 更新浮动窗口位置参数 wmParams.x = (int) (x - mTouchStartX); wmParams.y = (int) (y - mTouchStartY); wm.updateViewLayout(view, wmParams); } @Override public void onStart(Intent intent, int startId) { Log.d("FloatService", "onStart"); setForeground(true); super.onStart(intent, startId); } @Override public void onDestroy() { handler.removeCallbacks(task); Log.d("FloatService", "onDestroy"); wm.removeView(view); super.onDestroy(); } @Override public IBinder onBind(Intent intent) { return null; } }