一、需求：
客户要求从后天获取霸屏 app list,在打开apk的时候，apk要进入霸屏模式，即隐藏虚拟按键和状态栏，下拉状态栏。 并且在3s内连续点击屏幕8下弹出退出霸屏模式选择界面。
二、分析：
其实解决方法也很简单，刚开始做的是隐藏虚拟按键和状态栏；但是这样apk不能全屏显示，所以还是需要动态控制状态栏和导航栏的height；
修改的代码比较多，只简单说下关键的地方
三、代码分析
1、PhoneWindowManager.java 主要是获取屏幕点击操作，计算点击次数
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];//重新初始化数组
+ SystemProperties.set("persist.neo.isbaping","false");
+ Settings.System.putInt(mContext.getContentResolver(), PHONE_STATUS_
+ }
}
2、需要从后台获取 霸屏模式 的app 列表；
这个需要和后台对接；将设备SN传给后台，等待返回的数据，中间会有网络延迟，需要做下处理。获取到的数据存储在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、动态隐藏导航栏状态栏的高度，这个比较简单
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
status_bar_height
navigation_bar_height
navigation_bar_height_landscape
navigation_bar_width
只需要修改上面几个参数即可；
另外如果要单独只是动态隐藏导航栏，状态栏。需要另外操作，不详细列举。
**
四、双指触摸退出霸屏模式
主要是在getPointerCount() 中加逻辑判断
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);
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