2023-08-23 AndroidR 自主研究出来的三手指下滑截屏功能
2024-05-27 01:13:47
一、检测三个手指下滑消息，SystemGesturesPointerEventListener里面处理手势下滑消息frameworks\base\services\core\java\com\android\server\wm\SystemGesturesPointerEventListener.java
二、接收三手指滑动信息，然后发送截屏广播frameworks\base\services\core\java\com\android\server\wm\DisplayPolicy.java
SystemGesturesPointerEventListener
三、检测到三个手指的时候，拦截手指下滑消息，不然截屏的同时会把界面下滑，如果是在菜单界面，会把内容下滑。我们需要截屏的时候保持原先的界面。
四、测试log，三指滑下，截屏。
五、测试效果，三指滑下成功截屏。
六、整个过程重需要修改的内容
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
old mode 100644
new mode 100755
index ca424e7..eb41453
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -14564,6 +14564,7 @@ public class View implements Drawable.Callback, KeyEvent.Callback,*/@UnsupportedAppUsagepublic final boolean dispatchPointerEvent(MotionEvent event) {
+ Log.e(VIEW_LOG_TAG, "dispatchPointerEvent $$$$$$$$$$$$$$$$$$$$$");if (event.isTouchEvent()) {return dispatchTouchEvent(event);} else {
diff --git a/core/java/android/view/ViewGroup.java b/core/java/android/view/ViewGroup.java
old mode 100644
new mode 100755
index 77fedd7..2eb3eb2
--- a/core/java/android/view/ViewGroup.java
+++ b/core/java/android/view/ViewGroup.java
@@ -201,6 +201,7 @@ public abstract class ViewGroup extends View implements ViewParent, ViewManager// Lazily created int[2] for dispatch to childrenprivate int[] mTempLocation;+// Layout animationprivate LayoutAnimationController mLayoutAnimationController;private Animation.AnimationListener mAnimationListener;
@@ -239,6 +240,7 @@ public abstract class ViewGroup extends View implements ViewParent, ViewManager// True if the view group is capable of showing a tooltip and the pointer is directly// over the view group but not one of its child views.private boolean mTooltipHoveredSelf;
+ private boolean checkout_three_finger = false;/*** Internal flags.
@@ -3286,6 +3288,18 @@ public abstract class ViewGroup extends View implements ViewParent, ViewManager&& isOnScrollbarThumb(ev.getX(), ev.getY())) {return true;}
+ if(ev.getAction() == MotionEvent.ACTION_DOWN)
+ checkout_three_finger = false;
+
+ //if((ev.getPointerCount() >= 3 )&&(ev.getAction() == MotionEvent.ACTION_MOVE)){
+ if(ev.getPointerCount() >= 3 ){
+ checkout_three_finger = true;
+ return true;
+ }
+ else if(checkout_three_finger && ev.getAction() == MotionEvent.ACTION_UP){
+ return true;
+ }
+ return false;}diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
old mode 100644
new mode 100755
index 18e9ef0..573b67d
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -612,7 +612,7 @@ public final class ViewRootImpl implements ViewParent,private long mFpsStartTime = -1;private long mFpsPrevTime = -1;private int mFpsNumFrames;
-
+ public boolean checkout_three_finger_up = false;private int mPointerIconType = PointerIcon.TYPE_NOT_SPECIFIED;private PointerIcon mCustomPointerIcon = null;@@ -6019,7 +6019,32 @@ public final class ViewRootImpl implements ViewParent,mAttachInfo.mUnbufferedDispatchRequested = false;mAttachInfo.mHandlingPointerEvent = true;
- boolean handled = mView.dispatchPointerEvent(event);
+ Slog.d("View", "processPointerEvent dispatchPointerEvent ***************");
+
+ boolean handled ;
+/*
+ if(event.isTouchEvent())
+ {
+ if((event.getPointerCount() == 3 )&&(event.getAction() == MotionEvent.ACTION_MOVE))
+ {
+ checkout_three_finger_up = true;
+ handled = false ;
+ }
+ else {
+ if(checkout_three_finger_up && event.getAction() == MotionEvent.ACTION_UP)
+ handled = false ;
+ else
+ handled = mView.dispatchPointerEvent(event);
+ }
+
+ if(event.getAction() == MotionEvent.ACTION_DOWN)
+ checkout_three_finger_up = false;
+
+ }else
+*/
+ handled = mView.dispatchPointerEvent(event);
+
+ //boolean handled = mView.dispatchPointerEvent(event);maybeUpdatePointerIcon(event);maybeUpdateTooltip(event);mAttachInfo.mHandlingPointerEvent = false;
diff --git a/services/core/java/com/android/server/wm/DisplayPolicy.java b/services/core/java/com/android/server/wm/DisplayPolicy.java
old mode 100644
new mode 100755
index 29881cc..02cbb94
--- a/services/core/java/com/android/server/wm/DisplayPolicy.java
+++ b/services/core/java/com/android/server/wm/DisplayPolicy.java
@@ -260,6 +260,7 @@ public class DisplayPolicy {private final DisplayContent mDisplayContent;private final Object mLock;private final Handler mHandler;
+ public final Handler mScreenshotHandler;private Resources mCurrentUserResources;@@ -520,10 +521,26 @@ public class DisplayPolicy {final Looper looper = UiThread.getHandler().getLooper();mHandler = new PolicyHandler(looper);
+ mScreenshotHandler = new Handler() {
+ public void handleMessage(Message msg) {
+ Slog.i(TAG, "mScreenshotHandler handleMessage msg.what:" + msg.what);
+ switch(msg.what){
+ case 1:
+ Intent mscreenshot = new Intent("android.intent.action.SCREENSHOT");
+ mContext.sendBroadcast(mscreenshot);
+ break;
+
+ default:
+ break;
+ }
+ }
+ };
+mSystemGestures = new SystemGesturesPointerEventListener(mContext, mHandler,new SystemGesturesPointerEventListener.Callbacks() {@Overridepublic void onSwipeFromTop() {
+ Slog.i(TAG, "onSwipeFromTop: 0000000000000");synchronized (mLock) {if (mStatusBar != null) {requestTransientBars(mStatusBar);
@@ -534,6 +551,7 @@ public class DisplayPolicy {@Overridepublic void onSwipeFromBottom() {
+ Slog.i(TAG, "onSwipeFromBottom: 0000000000000");synchronized (mLock) {if (mNavigationBar != null&& mNavigationBarPosition == NAV_BAR_BOTTOM) {
@@ -579,6 +597,7 @@ public class DisplayPolicy {@Overridepublic void onFling(int duration) {
+ Slog.i(TAG, "onFling: 0000000000000");if (mService.mPowerManagerInternal != null) {mService.mPowerManagerInternal.powerHint(PowerHint.INTERACTION, duration);
@@ -597,15 +616,22 @@ public class DisplayPolicy {@Overridepublic void onDown() {
+ Slog.i(TAG, "onDown: 0000000000000");final WindowOrientationListener listener = getOrientationListener();if (listener != null) {listener.onTouchStart();}}
+ @Override
+ public void onSwipeThreeFingerDown() {
+ Slog.i(TAG, "onSwipeThreeFingerDown: 0000000000000");
+ mScreenshotHandler.sendEmptyMessageDelayed(1,100);
+ }@Overridepublic void onUpOrCancel() {final WindowOrientationListener listener = getOrientationListener();
+ Slog.i(TAG, "onUpOrCancel: 0000000000000");if (listener != null) {listener.onTouchEnd();}
diff --git a/services/core/java/com/android/server/wm/SystemGesturesPointerEventListener.java b/services/core/java/com/android/server/wm/SystemGesturesPointerEventListener.java
old mode 100644
new mode 100755
index f3859b4..4d71ac6
--- a/services/core/java/com/android/server/wm/SystemGesturesPointerEventListener.java
+++ b/services/core/java/com/android/server/wm/SystemGesturesPointerEventListener.java
@@ -38,7 +38,7 @@ import android.widget.OverScroller;*/class SystemGesturesPointerEventListener implements PointerEventListener {private static final String TAG = "SystemGestures";
- private static final boolean DEBUG = false;
+ private static final boolean DEBUG = true;private static final long SWIPE_TIMEOUT_MS = 500;private static final int MAX_TRACKED_POINTERS = 32; // max per input systemprivate static final int UNTRACKED_POINTER = -1;
@@ -49,6 +49,7 @@ class SystemGesturesPointerEventListener implements PointerEventListener {private static final int SWIPE_FROM_BOTTOM = 2;private static final int SWIPE_FROM_RIGHT = 3;private static final int SWIPE_FROM_LEFT = 4;
+ private static final int SWIPE_DOWN = 5;private final Context mContext;private final Handler mHandler;
@@ -142,6 +143,8 @@ class SystemGesturesPointerEventListener implements PointerEventListener {mDebugFireable = true;mDownPointers = 0;captureDown(event, 0);
+
+ Slog.d(TAG, " MotionEvent.ACTION_DOWN:");if (mMouseHoveringAtEdge) {mMouseHoveringAtEdge = false;mCallbacks.onMouseLeaveFromEdge();
@@ -150,6 +153,7 @@ class SystemGesturesPointerEventListener implements PointerEventListener {break;case MotionEvent.ACTION_POINTER_DOWN:captureDown(event, event.getActionIndex());
+ Slog.d(TAG, "MotionEvent.ACTION_POINTER_DOWN event.getPointerCount()="+event.getPointerCount());if (mDebugFireable) {mDebugFireable = event.getPointerCount() < 5;if (!mDebugFireable) {
@@ -159,6 +163,7 @@ class SystemGesturesPointerEventListener implements PointerEventListener {}break;case MotionEvent.ACTION_MOVE:
+ Slog.d(TAG, " MotionEvent.ACTION_MOVE:");if (mSwipeFireable) {final int swipe = detectSwipe(event);mSwipeFireable = swipe == SWIPE_NONE;
@@ -174,10 +179,16 @@ class SystemGesturesPointerEventListener implements PointerEventListener {} else if (swipe == SWIPE_FROM_LEFT) {if (DEBUG) Slog.d(TAG, "Firing onSwipeFromLeft");mCallbacks.onSwipeFromLeft();
+ } else if (swipe == SWIPE_DOWN) {
+ if (DEBUG) Slog.d(TAG, "Firing onSwipeDown event.getPointerCount()"+event.getPointerCount());
+ if(event.getPointerCount() >= 3 )
+ mCallbacks.onSwipeThreeFingerDown(); }
+ }break;case MotionEvent.ACTION_HOVER_MOVE:
+ Slog.d(TAG, " MotionEvent.ACTION_HOVER_MOVE:");if (event.isFromSource(InputDevice.SOURCE_MOUSE)) {if (!mMouseHoveringAtEdge && event.getY() == 0) {mCallbacks.onMouseHoverAtTop();
@@ -196,6 +207,7 @@ class SystemGesturesPointerEventListener implements PointerEventListener {case MotionEvent.ACTION_CANCEL:mSwipeFireable = false;mDebugFireable = false;
+ Slog.d(TAG, " MotionEvent.ACTION_UP ACTION_CANCEL event.getPointerCount()="+event.getPointerCount());mCallbacks.onUpOrCancel();break;default:
@@ -269,6 +281,9 @@ class SystemGesturesPointerEventListener implements PointerEventListener {&& y > fromY + mSwipeDistanceThreshold&& elapsed < SWIPE_TIMEOUT_MS) {return SWIPE_FROM_TOP;
+ }else if (y > fromY + mSwipeDistanceThreshold
+ && elapsed < SWIPE_TIMEOUT_MS) {
+ return SWIPE_DOWN; }if (fromY >= screenHeight - mSwipeStartThreshold&& y < fromY - mSwipeDistanceThreshold
@@ -336,5 +351,6 @@ class SystemGesturesPointerEventListener implements PointerEventListener {void onMouseHoverAtBottom();void onMouseLeaveFromEdge();void onDebug();
+ void onSwipeThreeFingerDown();}}
七、有价值的参考文章
Android 触摸事件的分发_梁景杰Android的博客-CSDN博客_android触摸分发
Android三指截屏实现,一个简单的三指截屏功能实现_阿機米德的博客-CSDN博客
Android屏幕截图实现方式 系统截屏源码分析和三指截屏_Ansen360的博客-CSDN博客_android 截屏源码
2023-08-23 AndroidR 自主研究出来的三手指下滑截屏功能相关推荐
- English Learning - L2-2 英音地道语音语调 [iː] [ɜː] [æ] 2023.02.23 周四
English Learning - L2-2 英音地道语音语调 [iː] [ɜː] [æ] 2023.02.23 周四 查音标的工具 怎么练习效果好 准备工作 大小声练习 大元音 开口度的对比 舌位 ...
- Berkeley共享自主研究：人-机组合应用model-free RL，优化无人机实时辅助控制
内容来源:ATYUN AI平台 图为Lunar Lander游戏 左:不清楚摄像头指向位置的自主智能体飞行员: 中:未达到最佳标准的人类飞行员: 右:人-机组合 想象这样一个场景,无人机驾驶员远程操控 ...
- English Learning - L2-10 英音地道语音语调 鼻辅音 [m] [n] [ŋ] 舌边音 [l] [r] 2023.03.23 周四
English Learning - L2-10 英音地道语音语调 鼻辅音 [m] [n] [ŋ] 舌边音 [l] [r] 2023.03.23 周四 课前准备活动和回顾 鼻辅音 鼻辅音 [m] 鼻辅 ...
- [AI助力] 2023.2.23 考研英语学习 2010 英语二翻译
[AI助力] 2023.2.23 考研英语学习 2010 英语二翻译 文章目录 [AI助力] 2023.2.23 考研英语学习 2010 英语二翻译 2010年英语二翻译真题 自己写的 积累
- 1.atd和crond两个任务管理程序的区别 2.指定在2023/08/26 09：00将时间写入testmail.txt文件中3.指定在每天凌晨4：00将该时间点之前的系统日志信息备份到个目录
一.atd与crond的区别 1.运行方式不同,at只运行一次,而crontab则是循环运行: 2.依赖的服务不同,at对应的服务时atd,而crontab对应的服务时crond: 3.at一般是临时 ...
- English Learning - L2 语音作业打卡 辅音翘舌音 [ʃ] [ʒ] 空气摩擦音 [h] Day31 2023.3.23 周四
English Learning - L2 语音作业打卡 辅音翘舌音 [ʃ] [ʒ] 空气摩擦音 [h] Day31 2023.3.23 周四
- FastReport.Net FastReport.Core 2023.2.23 Crack
FastReport.Net & FastReport.Core 2023.2.23适用于 .NET 7..NET Core.Blazor.ASP.NET.MVC 和 Windows 窗体的全 ...
- 【新书推荐】【2018.08】电子防御系统概论（第三版）
[2018.08]电子防御系统概论(第三版)Introduction to Electronic Defense Systems, Third Edition,共761页. 如果需要电子版,请联系QQ ...
- AI 绘画Stable Diffusion 研究（五）sd文生图功能详解（下）
大家好,我是风雨无阻. 上一篇文章详细介绍了sd文生图的功能及使用注意事项,感兴趣的朋友可以前往查看:AI 绘画Stable Diffusion 研究(四)sd文生图功能详解(上) . 那今天这篇文章 ...
最新文章
- MAC OS下使用OpenSSL生成私钥和公钥的方法
- java数据结构库函数_Java8 内置函数（api）总结
- 发布地图服务属性表_Web3D地图来了！腾讯位置服务正式版发布！
- code iban 是有什么组成_「面试」new String(abc)和abc有什么区别？反编译看看原理吧...
- 翻译 github上How to be a good programmer
- 把MySQL中的各种锁及其原理都画出来
- 合集| 21 篇技术文章，带你从零入门 K8s
- addcslashes php,php addcslashes函数怎么用
- 界面上下固定_【技术浅析】三通道机床自动上下料控制方法应用
- 30 FI配置-财务会计-外币评估-准备外币评估的自动过账
- mysql function select 赋值_数据分析面试之mysql的分组排序和变量赋值顺序
- 小程序接入h5页面_原生小程序接入H5页面，请求后台接口，获取数据
- 查看使用yum安装的软件路径
- 十年前的5.19行情
- 微信小程序中-[渲染层网络层错误] pages/card/card.wxss 中的本地资源图片无法通过 WXSS 获取-解决办法
- 你还在找音乐网站吗？试试这几个吧
- Cache数据库入门
- jenkins插件下载镜像加速
- 通过CAN总线控制VESC驱动直流无刷电机
- 计算机与计算机网络_让计算机承担责任