[Android] Android

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init
system/core/init

readme.txt
keywords.h -init command
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Android 6:
查詢相對應的Key_code
frameworks/base/data/keyboards/Generic.kl

處理Key_Event
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java


158 /* KEY_BACK */
172 /* KEY_HOMEPAGE */
580 /* APP_SWITCH */


/frameworks/base/core/res/res/values/config.xml

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Disable the software navigation bar
<bool name="config_showNavigationBar">false</bool>

Check the device init.rc don't "setprop sys.device.type tablet"


If deivetpye is tablet, the mHasNavigationBar will be true.

// Allow a system property to override this. Used by the emulator.
// See also hasNavigationBar().
String navBarOverride = SystemProperties.get("qemu.hw.mainkeys");
if ("1".equals(navBarOverride)) {
    mHasNavigationBar = false;
} else if ("0".equals(navBarOverride)) {
    mHasNavigationBar = true;
}

//if device type is tablet force enable NavigationBar and forbid NavigationBar move
String deviceType = SystemProperties.get("sys.device.type");
if (! "".equals(deviceType) && deviceType.equals("tablet")) {
    mNavigationBarCanMove = false;
    mHasNavigationBar = true;
}
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Screen flip
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java

        if (mForceDefaultOrientation) {
            return Surface.ROTATION_0;

        }

+            return Surface.ROTATION_180;


        synchronized (mLock) {


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