<!-- 顯示頂層浮窗 --><uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

[java] view plain copy print?在CODE上查看代碼片派生到我的代碼片
// 獲取應(yīng)用的Context 
 mContext = context.getApplicationContext(); 
 // 獲取WindowManager 
 mWindowManager = (WindowManager) mContext 
     .getSystemService(Context.WINDOW_SERVICE); 
參數(shù)設(shè)置： 
 final WindowManager.LayoutParams params = new WindowManager.LayoutParams(); 
 // 類型 
 params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT; 
 // WindowManager.LayoutParams.TYPE_SYSTEM_ALERT 
 // 設(shè)置flag 
 int flags = WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM; 
 // | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE; 
 // 如果設(shè)置了WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE，彈出的View收不到Back鍵的事件 
 params.flags = flags; 
 // 不設(shè)置這個(gè)彈出框的透明遮罩顯示為黑色 
 params.format = PixelFormat.TRANSLUCENT; 
 // FLAG_NOT_TOUCH_MODAL不阻塞事件傳遞到后面的窗口 
 // 設(shè)置 FLAG_NOT_FOCUSABLE 懸浮窗口較小時(shí)，后面的應(yīng)用圖標(biāo)由不可長(zhǎng)按變?yōu)榭砷L(zhǎng)按 
 // 不設(shè)置這個(gè)flag的話，home頁(yè)的劃屏?xí)袉?wèn)題 
 params.width = LayoutParams.MATCH_PARENT; 
 params.height = LayoutParams.MATCH_PARENT; 
 params.gravity = Gravity.CENTER; 

[java] view plain copy print?在CODE上查看代碼片派生到我的代碼片
package com.robert.floatingwindow; 
import android.content.Context; 
import android.graphics.PixelFormat; 
import android.graphics.Rect; 
import android.view.Gravity; 
import android.view.KeyEvent; 
import android.view.LayoutInflater; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.View.OnKeyListener; 
import android.view.View.OnTouchListener; 
import android.view.WindowManager; 
import android.view.View.OnClickListener; 
import android.view.WindowManager.LayoutParams; 
import android.widget.Button; 
/** 
* 彈窗輔助類 
* 
* @ClassName WindowUtils 
* 
* 
*/ 
public class WindowUtils { 
  private static final String LOG_TAG = "WindowUtils"; 
  private static View mView = null; 
  private static WindowManager mWindowManager = null; 
  private static Context mContext = null; 
  public static Boolean isShown = false; 
  /** 
   * 顯示彈出框 
   * 
   * @param context 
   * @param view 
   */ 
  public static void showPopupWindow(final Context context) { 
    if (isShown) { 
      LogUtil.i(LOG_TAG, "return cause already shown"); 
      return; 
    } 
    isShown = true; 
    LogUtil.i(LOG_TAG, "showPopupWindow"); 
    // 獲取應(yīng)用的Context 
    mContext = context.getApplicationContext(); 
    // 獲取WindowManager 
    mWindowManager = (WindowManager) mContext 
        .getSystemService(Context.WINDOW_SERVICE); 
    mView = setUpView(context); 
    final WindowManager.LayoutParams params = new WindowManager.LayoutParams(); 
    // 類型 
    params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT; 
    // WindowManager.LayoutParams.TYPE_SYSTEM_ALERT 
    // 設(shè)置flag 
    int flags = WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM; 
    // | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE; 
    // 如果設(shè)置了WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE，彈出的View收不到Back鍵的事件 
    params.flags = flags; 
    // 不設(shè)置這個(gè)彈出框的透明遮罩顯示為黑色 
    params.format = PixelFormat.TRANSLUCENT; 
    // FLAG_NOT_TOUCH_MODAL不阻塞事件傳遞到后面的窗口 
    // 設(shè)置 FLAG_NOT_FOCUSABLE 懸浮窗口較小時(shí)，后面的應(yīng)用圖標(biāo)由不可長(zhǎng)按變?yōu)榭砷L(zhǎng)按 
    // 不設(shè)置這個(gè)flag的話，home頁(yè)的劃屏?xí)袉?wèn)題 
    params.width = LayoutParams.MATCH_PARENT; 
    params.height = LayoutParams.MATCH_PARENT; 
    params.gravity = Gravity.CENTER; 
    mWindowManager.addView(mView, params); 
    LogUtil.i(LOG_TAG, "add view"); 
  } 
  /** 
   * 隱藏彈出框 
   */ 
  public static void hidePopupWindow() { 
    LogUtil.i(LOG_TAG, "hide " + isShown + ", " + mView); 
    if (isShown && null != mView) { 
      LogUtil.i(LOG_TAG, "hidePopupWindow"); 
      mWindowManager.removeView(mView); 
      isShown = false; 
    } 
  } 
  private static View setUpView(final Context context) { 
    LogUtil.i(LOG_TAG, "setUp view"); 
    View view = LayoutInflater.from(context).inflate(R.layout.popupwindow, 
        null); 
    Button positiveBtn = (Button) view.findViewById(R.id.positiveBtn); 
    positiveBtn.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(View v) { 
        LogUtil.i(LOG_TAG, "ok on click"); 
        // 打開(kāi)安裝包 
        // 隱藏彈窗 
        WindowUtils.hidePopupWindow(); 
      } 
    }); 
    Button negativeBtn = (Button) view.findViewById(R.id.negativeBtn); 
    negativeBtn.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(View v) { 
        LogUtil.i(LOG_TAG, "cancel on click"); 
        WindowUtils.hidePopupWindow(); 
      } 
    }); 
    // 點(diǎn)擊窗口外部區(qū)域可消除 
    // 這點(diǎn)的實(shí)現(xiàn)主要將懸浮窗設(shè)置為全屏大小，外層有個(gè)透明背景，中間一部分視為內(nèi)容區(qū)域 
    // 所以點(diǎn)擊內(nèi)容區(qū)域外部視為點(diǎn)擊懸浮窗外部 
    final View popupWindowView = view.findViewById(R.id.popup_window);// 非透明的內(nèi)容區(qū)域 
    view.setOnTouchListener(new OnTouchListener() { 
      @Override 
      public boolean onTouch(View v, MotionEvent event) { 
        LogUtil.i(LOG_TAG, "onTouch"); 
        int x = (int) event.getX(); 
        int y = (int) event.getY(); 
        Rect rect = new Rect(); 
        popupWindowView.getGlobalVisibleRect(rect); 
        if (!rect.contains(x, y)) { 
          WindowUtils.hidePopupWindow(); 
        } 
        LogUtil.i(LOG_TAG, "onTouch : " + x + ", " + y + ", rect: " 
            + rect); 
        return false; 
      } 
    }); 
    // 點(diǎn)擊back鍵可消除 
    view.setOnKeyListener(new OnKeyListener() { 
      @Override 
      public boolean onKey(View v, int keyCode, KeyEvent event) { 
        switch (keyCode) { 
        case KeyEvent.KEYCODE_BACK: 
          WindowUtils.hidePopupWindow(); 
          return true; 
        default: 
          return false; 
        } 
      } 
    }); 
    return view; 
  } 
}