单一产品网站如何做seo,做电脑网站,企业商务网站建设策划书,河北省建设工程质量监督网站冻结屏幕很多第一次听到以为是Android一种异常现象#xff0c;实则不然#xff0c;就是防止用户在做一些非法操作导致问题防止安全漏洞问题。
1、主要通过用户行为比如禁止下拉状态栏和按键以及onTouch事件拦截等#xff0c;不知道请看这篇文章#xff08;Touch事件传递流…
冻结屏幕很多第一次听到以为是Android一种异常现象实则不然就是防止用户在做一些非法操作导致问题防止安全漏洞问题。
1、主要通过用户行为比如禁止下拉状态栏和按键以及onTouch事件拦截等不知道请看这篇文章Touch事件传递流程、事件分发中的onTouch 和onTouchEvent 有什么区别又该如何使用_事件分发中的ontouch和ontouchevent有什么区别,又该如何使用?-CSDN博客
主要修改代码
PhoneWindowManager # interceptKeyBeforeDispatching # interceptKeyBeforeQueueing # interceptMotionBeforeQueueingNonInteractive #
ViewGroup #onInterceptTouchEvent
StatusBar # onTouchEvent
PhoneStatusBarView # onTouchEvent
2308 freeze Screen system_process E set freezeScreen Status Success
2024-05-23 11:49:52.744 1331-4710 unfreeze Screen system_process E set isUnfreezeScreen Status Success
2024-05-23 11:52:36.634 1331-2308 freeze Screen system_process E set freezeScreen Status Success 2、实现逻辑比较简单 代码如下图所示 通过系统属性persist.xxx.screen_frozen去控制
ViewGroup.java
代码路径frameworks/base/core/java/android/view/ViewGroup.java 在onInterceptTouchEvent进行拦截 public boolean onInterceptTouchEvent(MotionEvent ev) {boolean isFreezeScreen SystemProperties.getBoolean(persist.xxx.screen_frozen, false);Log.e(ZM,onInterceptTouchEventisFreezeScreen);if(isFreezeScreen true){Log.e(ZM,onInterceptTouchEvent isFreezeScreenisFreezeScreen);return true;}if (ev.isFromSource(InputDevice.SOURCE_MOUSE) ev.getAction() MotionEvent.ACTION_DOWN ev.isButtonPressed(MotionEvent.BUTTON_PRIMARY) isOnScrollbarThumb(ev.getX(), ev.getY())) {return true;}return false;}3、/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarView.java # onTouchEvent设置为true表示拦截此事件 不再往下传递。 Overridepublic boolean onTouchEvent(MotionEvent event) {boolean isFreezeScreen SystemProperties.getBoolean(persist.xxx.screen_frozen, false);Log.e(ZM,PhoneStatusBarViewisFreezeScreen);if(isFreezeScreen true){Log.e(ZM,onTouchEvent PhoneStatusBarView isFreezeScreenisFreezeScreen);return true;}if (mTouchEventHandler null) {Log.w(TAG,String.format(onTouch: No touch handler provided; eating gesture at (%d,%d),(int) event.getX(),(int) event.getY()));return true;}return mTouchEventHandler.handleTouchEvent(event);} 4、PhoneWindowManager里面拦截 按键KeyUp/KeyDown事件代码 // 添加一个标志来控制是否启用锁定// private boolean isScreenLocked true;//zm fixprivate static final String SYS_PROP_SCREEN_FROZEN persist.xxx.screen_frozen;private boolean mScreenFrozen false;/*** Keyguard stuff-2664,8 2670,20 public class PhoneWindowManager implements WindowManagerPolicy {Overridepublic long interceptKeyBeforeDispatching(IBinder focusedToken, KeyEvent event,int policyFlags) {mScreenFrozen SystemProperties.getBoolean(SYS_PROP_SCREEN_FROZEN, false);final boolean keyguardOn keyguardOn();final int keyCode event.getKeyCode();Log.e(ZM, interceptKeyBeforeDispatching Block Home key2 mScreenFrozenmScreenFrozen);if (mScreenFrozen) {// 禁止所有按键输入Log.e(ZM, free Screen interceptKeyBeforeDispatching Block Home keyevent.toString());if (keyCode KeyEvent.KEYCODE_BACK ||keyCode KeyEvent.KEYCODE_APP_SWITCH || keyCode KeyEvent.KEYCODE_VOLUME_DOWN || keyCode KeyEvent.KEYCODE_VOLUMEkeyCode KeyEvent.KEYCODE_POWER || keyCode KeyEvent.KEYCODE_HOME) {Log.e(ZM, free Screen interceptKeyBeforeDispatching Block Home key2event.toString());return -1; // Prevent the key event from being dispatched}}final int repeatCount event.getRepeatCount();final int metaState event.getMetaState();final int flags event.getFlags();-3504,6 3522,18 public class PhoneWindowManager implements WindowManagerPolicy {/** {inheritDoc} */Overridepublic int interceptKeyBeforeQueueing(KeyEvent event, int policyFlags) {mScreenFrozen SystemProperties.getBoolean(SYS_PROP_SCREEN_FROZEN, false);Log.e(ZM, free Screen interceptKeyBeforeQueueing KeyEventmScreenFrozen);if (mScreenFrozen) {// 禁止所有按键输入int keyCode event.getKeyCode();if (keyCode KeyEvent.KEYCODE_VOLUME_DOWN || keyCode KeyEvent.KEYCODE_VOLUME_UP ||keyCode KeyEvent.KEYCODE_POWER || keyCode KeyEvent.KEYCODE_HOME) {Log.e(ZM, free Screen interceptKeyBeforeQueueing KeyEventevent.toString());return 0;}Log.e(ZM, free Screen interceptKeyBeforeQueueing KeyEvent2event.toString());}final int keyCode event.getKeyCode();final boolean down event.getAction() KeyEvent.ACTION_DOWN;boolean isWakeKey (policyFlags WindowManagerPolicy.FLAG_WAKE) ! 0-4092,6 4122,11 public class PhoneWindowManager implements WindowManagerPolicy {Overridepublic int interceptMotionBeforeQueueingNonInteractive(int displayId, long whenNanos,int policyFlags) {if (mScreenFrozen) {//zm fixLog.e(ZM,interceptMotionBeforeQueueingNonInteractive);return 0;}5、apk调用代码也比较简单示例如下
/*** 冻结屏幕*/public void freezeScreen() {SystemProperties.set(persist.xxx.screen_frozen, true);Log.e(freeze Screen, set freezeScreen Status Success);}/*** 屏幕是否冻结** return*/public boolean isFreezeScreen() {// 获取系统属性 persist.xxx.screen_frozen 的值String value SystemProperties.get(persist.sys.screen_frozen, false);Log.e(isFreezeScreen,valuevalue);// 将属性值转换为布尔值return Boolean.parseBoolean(value);}/*** 解冻屏幕*/public void unfreezeScreen() {SystemProperties.set(persist.xxx.screen_frozen, false);Log.e(unfreeze Screen, set isUnfreezeScreen Status Success);}
最后别忘记记得把屏幕保持常亮哈转载请注明出现高通 Android 12/13冻结屏幕-CSDN博客谢谢
最后补充
// 设置屏幕常亮 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
记得加系统签名哈 android:sharedUserIdandroid.uid.system
