RK7.1 apk 霸屏模式 和雙指點擊8次退出霸屏模式

需求：
客戶要求從後天獲取霸屏 app list,在打開apk的時候，apk要進入霸屏模式，即隱藏虛擬按鍵和狀態欄，下拉狀態欄。 並且在3s內連續點擊屏幕8下彈出退出霸屏模式選擇界面。

分析：
其實解決方法也很簡單，剛開始做的是隱藏虛擬按鍵和狀態欄；但是這樣apk不能全屏顯示，所以還是需要動態控制狀態欄和導航欄的height；

修改的代碼比較多，只簡單說下關鍵的地方

代碼分析：
1、PhoneWindowManager.java 主要是獲取屏幕點擊操作，計算點擊次數

frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
 public void onDown() {
 +                                               System.arraycopy(mHits, 1, mHits, 0, mHits.length - 1);
+                                               mHits[mHits.length - 1] = SystemClock.uptimeMillis();
+                                               if (mHits[0] >= (SystemClock.uptimeMillis() - DURATIONS)) {
+                                               mHits = new long[5];//重新初始化數組
+                                               SystemProperties.set("persist.neo.isbaping","false");
+                                               Settings.System.putInt(mContext.getContentResolver(), PHONE_STATUS_
+                                               }

 }

2、需要從後臺獲取 霸屏模式 的app 列表；這個需要和後臺對接；將設備SN傳給後臺，等待返回的數據，中間會有網絡延遲，需要做下處理。獲取到的數據存儲在SharedPreferences。

 public static int getInstallAuthority() {
        try {
            String sn = android.os.Build.SERIAL;
			Log.i("InstallController---SN", sn);
            JSONObject body = new JSONObject();
            body.put("sn", sn);
            URL url = new URL(urlPath);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setConnectTimeout(5000);
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Content-Type", "application/json");
            DataOutputStream os = new DataOutputStream(conn.getOutputStream());
            String content = String.valueOf(body);
            os.writeBytes(content);
            os.flush();
            os.close();
            int responseCode = conn.getResponseCode();
            Log.i("InstallController", String.valueOf(responseCode));
            if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
                InputStreamReader in = new InputStreamReader(conn.getInputStream());
                BufferedReader bf = new BufferedReader(in);

                String inputLine;
                StringBuilder response = new StringBuilder();
                while ((inputLine = bf.readLine()) != null) {
                    response.append(inputLine);
                }
				applist = response.toString();				
                JSONObject jsonResponse = new JSONObject(response.toString());
                JSONObject dataJsonObject = jsonResponse.getJSONObject("data");
                int installAuthority = dataJsonObject.getInt("installAuthority");
                Log.i("InstallController", "installAuthority --" + installAuthority);
                in.close();
                conn.disconnect();
                return installAuthority;
            }
        } catch (Exception e) {
            Log.e("InstallController", "InstallController --Exception--" + e.toString());
        }
        return NOT_GET_NET_AUTHORITY;
    }

3、動態隱藏導航欄狀態欄的高度，這個比較簡單
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
status_bar_height
navigation_bar_height
navigation_bar_height_landscape
navigation_bar_width

另外如果要單獨只是動態隱藏導航欄，狀態欄。需要另外操作，不詳細列舉。

二 雙指觸摸退出霸屏模式
主要是在getPointerCount() 中加邏輯判斷

frameworks/base/core/java/android/view/MotionEvent.java
     public final int getPointerCount() {
+
+
+	if("true".equals(SystemProperties.get("persist.neo.isbaping")) 
+		&& nativeGetPointerCount(mNativePtr) == 2 
+		&& "true".equals(SystemProperties.get("persist.neo.pointerCount"))
+		&& "false".equals(SystemProperties.get("persist.neo.openBaping"))){
+		System.arraycopy(mHits, 1, mHits, 0, mHits.length - 1);
+		mHits[mHits.length - 1] = SystemClock.uptimeMillis();
+		SystemProperties.set("persist.neo.pointerCount","false");
+		Log.e("lyl","mHits[mHits.length - 1]" +mHits[mHits.length - 1]);
+		Log.e("lyl"," mHits[0] " +mHits[0]+ "   " + SystemClock.uptimeMillis() );
+		 if (mHits[0] >= (SystemClock.uptimeMillis() - DURATIONS)) {
+		//if (SystemClock.uptimeMillis() - mHits[0] <= DURATIONS) {	 
+			Log.e("lyl","getPointerCount33333" );
+			mHits = new long[7];
+			SystemProperties.set("persist.neo.openBaping","true");								 
+											 
+		}
+	}
         return nativeGetPointerCount(mNativePtr);