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RK3326 Android 8.1是如何实现双击home键切换到recent app的

问答对人有帮助，内容完整，我也想知道答案 0 RK3326 Android 8.1是如何实现双击home键切换到recent app的？ 0
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答案对人有帮助，有参考价值 0 一般对于开发者来说，我们看的最多的是下面两个函数 // 用于处理一些特殊的按键 public int interceptKeyBeforeQueueing(KeyEvent event, int policyFlags) // 处理一般性的按键 public long interceptKeyBeforeDispatching(WindowState win, KeyEvent event, int policyFlags) 实现双击home键切换到 recent app 文件：frameworksbaseservicescorejavacomandroidserverpolicyPhoneWindowManager.java diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java index cebf0a7..9ec5dbb 100755 --- a/services/core/java/com/android/server/policy/PhoneWindowManager.java +++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java @@ -842,6 +853,77 @@ public class PhoneWindowManager implements WindowManagerPolicy { private float mdeltax, mdeltay; boolean keydown; + boolean homeDownDoubleClick = false; + long lastHomeDownTime=0; + long lastHomeUpTime=0; @@ -6084,7 +6252,7 @@ public class PhoneWindowManager implements WindowManagerPolicy { } // Basic policy based on interactive state. - int result; + int result = 0; boolean isBox = "box".equals(SystemProperties.get("ro.target.product")); boolean isWakeKey = (policyFlags & WindowManagerPolicy.FLAG_WAKE) != 0 \|\| event.isWakeKey(); @@ -6421,6 +6589,40 @@ public class PhoneWindowManager implements WindowManagerPolicy { if (useHapticFeedback) { performHapticFeedbackLw(null, HapticFeedbackConstants.VIRTUAL_KEY, false); } + /** + * add by wutao 20190809 + * Double-click the home button to switch to the recent app + / + if(keyCode == KeyEvent.KEYCODE_HOME){ + if(down){ + // this is home down + if(((event.getEventTime() - lastHomeDownTime) < 500)){ + homeDownDoubleClick = true; + }else{ + homeDownDoubleClick = false; + } + lastHomeDownTime = event.getEventTime(); + } else { + // then home up comes + Log.d(TAG,"homeDownDoubleClick="+homeDownDoubleClick+",lastHomeDownTime="+lastHomeDownTime+",lastHomeUpTime="+lastHomeUpTime+",this home up="+event.getEventTime()); + if(homeDownDoubleClick && ((event.getEventTime() - lastHomeUpTime) < 500)){ + Log.d(TAG,"double click on home detected"); + try { + StatusBarManagerInternal statuar = getStatusBarManagerInternal(); + if (statuar != null) { + statuar.preloadRecentApps(); + statu*ar.toggleRecentApps(); + } + } catch (Exception e) { + e.printStackTrace(); + mStatusBarService = null; + } + //result \|= ACTION_WAKE_UP; + return result; + } + lastHomeUpTime = event.getEventTime(); + } + } if (isWakeKey) { wakeUp(event.getEventTime(), mAllowTheaterModeWakeFromKey, "android.policy:KEY");

2022-2-17 14:17:47 评论举报华一颖