public class DesktopLayout extends LinearLayout {
  public DesktopLayout(Context context) {
    super(context);
    setOrientation(LinearLayout.VERTICAL);// 水平排列
    //設(shè)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(tǒng)窗體
mWindowManager = (WindowManager) getApplicationContext()
    .getSystemService("window");
// 窗體的布局樣式
mLayout = new WindowManager.LayoutParams();
// 設(shè)置窗體顯示類型——TYPE_SYSTEM_ALERT(系統(tǒng)提示)
mLayout.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
// 設(shè)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(shè)置顯示的模式
mLayout.format = PixelFormat.RGBA_8888;
// 設(shè)置對齊的方法
mLayout.gravity = Gravity.TOP | Gravity.LEFT;
// 設(shè)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(chuàng)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(biāo)，即以屏幕左上角為原點
        x = event.getRawX();
        y = event.getRawY() - top; // 25是系統(tǒng)狀態(tài)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(biāo)，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(shù)
          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(shù)
          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(shè)置標(biāo)題樣式，這個必須出現(xiàn)在標(biāo)題樣式之后，否則會出錯
    getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);
    top = rect.top;//狀態(tài)欄的高度，所以rect.height,rect.width分別是系統(tǒng)的高度的寬度
    Log.i("top",""+top);
  }
  /**
   * 顯示DesktopLayout
   */
  private void showDesk() {
    mWindowManager.addView(mDesktopLayout, mLayout);
    finish();
  }
  /**
   * 關(guān)閉DesktopLayout
   */
  private void closeDesk() {
    mWindowManager.removeView(mDesktopLayout);
    finish();
  }
  /**
   * 設(shè)置WindowManager
   */
  private void createWindowManager() {
    // 取得系統(tǒng)窗體
    mWindowManager = (WindowManager) getApplicationContext()
        .getSystemService("window");
    // 窗體的布局樣式
    mLayout = new WindowManager.LayoutParams();
    // 設(shè)置窗體顯示類型——TYPE_SYSTEM_ALERT(系統(tǒng)提示)
    mLayout.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
    // 設(shè)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(shè)置顯示的模式
    mLayout.format = PixelFormat.RGBA_8888;
    // 設(shè)置對齊的方法
    mLayout.gravity = Gravity.TOP | Gravity.LEFT;
    // 設(shè)置窗體寬度和高度
    mLayout.width = WindowManager.LayoutParams.WRAP_CONTENT;
    mLayout.height = WindowManager.LayoutParams.WRAP_CONTENT;
  }
}