<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

public class DesktopLayout extends LinearLayout { public DesktopLayout(Context context) {  super(context);  setOrientation(LinearLayout.VERTICAL);// 水平排列    //設置寬高  this.setLayoutParams( new LayoutParams(LayoutParams.WRAP_CONTENT,    LayoutParams.WRAP_CONTENT));    View view = LayoutInflater.from(context).inflate(     R.layout.desklayout, null);   this.addView(view); }

// 取得系統窗體 mWindowManager = (WindowManager) getApplicationContext()    .getSystemService("window");// 窗體的布局樣式 mLayout = new WindowManager.LayoutParams();// 設置窗體顯示類型——TYPE_SYSTEM_ALERT(系統提示) mLayout.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;// 設置窗體焦點及觸摸：// FLAG_NOT_FOCUSABLE(不能獲得按鍵輸入焦點) mLayout.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;// 設置顯示的模式  mLayout.format = PixelFormat.RGBA_8888;// 設置對齊的方法  mLayout.gravity = Gravity.TOP | Gravity.LEFT;// 設置窗體寬度和高度  mLayout.width = WindowManager.LayoutParams.WRAP_CONTENT;  mLayout.height = WindowManager.LayoutParams.WRAP_CONTENT;

package com.yc.yc_suspendingform;import android.app.Activity;import android.graphics.PixelFormat;import android.graphics.Rect;import android.os.Bundle;import android.util.Log;import android.view.Gravity;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnTouchListener;import android.view.WindowManager;import android.widget.Button;import com.yc.yc_floatingform.R;public class MainActivity extends Activity { private WindowManager mWindowManager; private WindowManager.LayoutParams mLayout; private DesktopLayout mDesktopLayout; private long startTime; // 聲明屏幕的寬高 float x, y; int top; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);    createWindowManager();  createDesktopLayout();  Button btn = (Button) findViewById(R.id.btn);  btn.setOnClickListener(new OnClickListener() {   public void onClick(View v) {    showDesk();   }  }); } /**  * 創建懸浮窗體  */ private void createDesktopLayout() {  mDesktopLayout = new DesktopLayout(this);  mDesktopLayout.setOnTouchListener(new OnTouchListener() {   float mTouchStartX;   float mTouchStartY;   @Override   public boolean onTouch(View v, MotionEvent event) {    // 獲取相對屏幕的坐標，即以屏幕左上角為原點    x = event.getRawX();    y = event.getRawY() - top; // 25是系統狀態欄的高度    Log.i("startP", "startX" + mTouchStartX + "====startY"      + mTouchStartY);    switch (event.getAction()) {    case MotionEvent.ACTION_DOWN:     // 獲取相對View的坐標，即以此View左上角為原點     mTouchStartX = event.getX();     mTouchStartY = event.getY();     Log.i("startP", "startX" + mTouchStartX + "====startY"       + mTouchStartY);     long end = System.currentTimeMillis() - startTime;     // 雙擊的間隔在 300ms以下     if (end < 300) {      closeDesk();     }     startTime = System.currentTimeMillis();     break;    case MotionEvent.ACTION_MOVE:     // 更新浮動窗口位置參數     mLayout.x = (int) (x - mTouchStartX);     mLayout.y = (int) (y - mTouchStartY);     mWindowManager.updateViewLayout(v, mLayout);     break;    case MotionEvent.ACTION_UP:     // 更新浮動窗口位置參數     mLayout.x = (int) (x - mTouchStartX);     mLayout.y = (int) (y - mTouchStartY);     mWindowManager.updateViewLayout(v, mLayout);     // 可以在此記錄最后一次的位置     mTouchStartX = mTouchStartY = 0;     break;    }    return true;   }  }); } @Override public void onWindowFocusChanged(boolean hasFocus) {  super.onWindowFocusChanged(hasFocus);  Rect rect = new Rect();  // /取得整個視圖部分,注意，如果你要設置標題樣式，這個必須出現在標題樣式之后，否則會出錯  getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);  top = rect.top;//狀態欄的高度，所以rect.height,rect.width分別是系統的高度的寬度  Log.i("top",""+top); } /**  * 顯示DesktopLayout  */ private void showDesk() {  mWindowManager.addView(mDesktopLayout, mLayout);  finish(); } /**  * 關閉DesktopLayout  */ private void closeDesk() {  mWindowManager.removeView(mDesktopLayout);  finish(); } /**  * 設置WindowManager  */ private void createWindowManager() {  // 取得系統窗體  mWindowManager = (WindowManager) getApplicationContext()    .getSystemService("window");  // 窗體的布局樣式  mLayout = new WindowManager.LayoutParams();  // 設置窗體顯示類型——TYPE_SYSTEM_ALERT(系統提示)  mLayout.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;  // 設置窗體焦點及觸摸：  // FLAG_NOT_FOCUSABLE(不能獲得按鍵輸入焦點)  mLayout.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;  // 設置顯示的模式  mLayout.format = PixelFormat.RGBA_8888;  // 設置對齊的方法  mLayout.gravity = Gravity.TOP | Gravity.LEFT;  // 設置窗體寬度和高度  mLayout.width = WindowManager.LayoutParams.WRAP_CONTENT;  mLayout.height = WindowManager.LayoutParams.WRAP_CONTENT; }}