android4.0 休眠喚醒會出現之前介面,我們通過案頭遠程工具可以看到在休眠時候,系統已經進入解鎖介面。可是我們喚醒機器的時候,系統會閃一下之前操作的介面,再進入解鎖介面。所以判斷應該是休眠時候沒有把解鎖介面寫入framebuffer,找到寫framebuffer地方:if (LIKELY(hw.canDraw())) { // repaint the framebuffer (if needed) const int index =
詳細內容轉貼:http://www.kandroid.org/android_pdk/keymaps_keyboard_input.html Key layout maps are installed in /system/usr/keylayout and /data/usr/keylayout. Key layout maps are stored on the device as UTF-8 text files and have the following
Guess Android SystemClock keeps system timer and rtc count sync. power on reset -> reserve rtc power onlycommand reboot (system software reset) -> reserve PM, RSC, RTC, GPIO For keep time for situations as sleep/wakeup, command reboot, power
What's G-sensor?An g-sensor (or accelerometer) is a device that measures proper acceleration, the acceleration experienced relative to freefall.Single- and multi-axis models are available to detect magnitude and direction of the acceleration as a
Android 4.0(ICS) merge handset and tablet UI together, make customer flexible to use which UI they want. On marketing nowdays, phone use phone mode directly and other product like tablet/MID/PND use tablet mode.ICS support multi-panel in tablet mode