Android 双击点亮屏幕

1.修改配置：

frameworks\base\services\core\java\com\android\server\power\PowerManagerService.java

 mSupportsDoubleTapWakeConfig = resources.getBoolean(com.android.internal.R.bool.config_supportDoubleTapWake);

  if (mSupportsDoubleTapWakeConfig) {
            boolean doubleTapWakeEnabled = Settings.Secure.getIntForUser(resolver,
                    Settings.Secure.DOUBLE_TAP_TO_WAKE, DEFAULT_DOUBLE_TAP_TO_WAKE,
                            UserHandle.USER_CURRENT) != 0;
            if (doubleTapWakeEnabled != mDoubleTapWakeEnabled) {
                mDoubleTapWakeEnabled = doubleTapWakeEnabled;
                nativeSetFeature(POWER_FEATURE_DOUBLE_TAP_TO_WAKE, mDoubleTapWakeEnabled ? 1 : 0);
            }
        }

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

<!-- Whether device supports double tap to wake -->
    <bool name="config_supportDoubleTapWake">true</bool>

 // Power features defined in hardware/libhardware/include/hardware/power.h.
    private static final int POWER_FEATURE_DOUBLE_TAP_TO_WAKE = 1;

    // Default setting for double tap to wake.
    private static final int DEFAULT_DOUBLE_TAP_TO_WAKE = 0;