Android指定物理按键唤醒屏幕

最新推荐文章于 2024-06-26 17:26:55 发布

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#指定键唤醒屏幕 #指定键禁止唤醒屏幕 #isWakeKey #isWakeKeyWhenScreenOff #物理键唤醒屏幕

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本文介绍如何在Android系统中通过修改代码实现指定按键唤醒屏幕的功能，包括允许所有按键唤醒及禁用特定按键唤醒屏幕的方法。

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指定键唤醒屏幕

例如指定按键机所有键均可以唤醒屏幕,添加如下修改部分即可
frameworks/base/core/java/android/view/KeyEvent.java

/** @hide */
    public static final boolean isWakeKey(int keyCode) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK:
            case KeyEvent.KEYCODE_MENU:
            case KeyEvent.KEYCODE_WAKEUP:
            case KeyEvent.KEYCODE_PAIRING:
            case KeyEvent.KEYCODE_STEM_1:
            case KeyEvent.KEYCODE_STEM_2:
            case KeyEvent.KEYCODE_STEM_3:
            // 返回true则可作为唤醒屏幕按键
			// Redmine150387 breeze modify the main display can be wake isWakeKeyby all keys 20181022 begin
			case KeyEvent.KEYCODE_0:
			case KeyEvent.KEYCODE_1:
			case KeyEvent.KEYCODE_2:
			case KeyEvent.KEYCODE_3:
			case KeyEvent.KEYCODE_4:
			case KeyEvent.KEYCODE_5:
			case KeyEvent.KEYCODE_6:
			case KeyEvent.KEYCODE_7:
			case KeyEvent.KEYCODE_8:
			case KeyEvent.KEYCODE_9:
			case KeyEvent.KEYCODE_STAR:
			case KeyEvent.KEYCODE_POUND:
			case KEYCODE_DPAD_LEFT:
			case KEYCODE_DPAD_RIGHT:
			case KEYCODE_DPAD_UP:
			case KEYCODE_DPAD_DOWN:
			case KeyEvent.KEYCODE_ENTER:
			case KeyEvent.KEYCODE_CALL:
			// Redmine150387 breeze modify the main display can be wake by all keys 20181022 end
                return true;
        }
        return false;
    }

指定键禁止唤醒屏幕

例如禁止返回键和菜单键唤醒屏幕
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java

/**
     * When the screen is off we ignore some keys that might otherwise typically
     * be considered wake keys.  We filter them out here.
     *
     * {@link KeyEvent#KEYCODE_POWER} is notably absent from this list because it
     * is always considered a wake key.
     */
    private boolean isWakeKeyWhenScreenOff(int keyCode) {
        switch (keyCode) {
            // ignore volume keys unless docked
            case KeyEvent.KEYCODE_VOLUME_UP:
            case KeyEvent.KEYCODE_VOLUME_DOWN:
            case KeyEvent.KEYCODE_VOLUME_MUTE:
                return mDockMode != Intent.EXTRA_DOCK_STATE_UNDOCKED;

            // ignore media and camera keys
            case KeyEvent.KEYCODE_MUTE:
            case KeyEvent.KEYCODE_HEADSETHOOK:
            case KeyEvent.KEYCODE_MEDIA_PLAY:
            case KeyEvent.KEYCODE_MEDIA_PAUSE:
            case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE:
            case KeyEvent.KEYCODE_MEDIA_STOP:
            case KeyEvent.KEYCODE_MEDIA_NEXT:
            case KeyEvent.KEYCODE_MEDIA_PREVIOUS:
            case KeyEvent.KEYCODE_MEDIA_REWIND:
            case KeyEvent.KEYCODE_MEDIA_RECORD:
            case KeyEvent.KEYCODE_MEDIA_FAST_FORWARD:
            case KeyEvent.KEYCODE_MEDIA_AUDIO_TRACK:
            case KeyEvent.KEYCODE_CAMERA:
            // 返回false则不会作为唤醒屏幕按键,即使在KeyEvent中isWakeKey方法进行了配置
            // Redmine150387 breeze modify the main display can be wake by all keys 20181022 begin
            case KeyEvent.KEYCODE_BACK:
            case KeyEvent.KEYCODE_MENU:
            // Redmine150387 breeze modify the main display can be wake by all keys 20181022 end
                return false;
        }
        return true;
    }

解决MTK手机进入休眠后按键无法点亮屏幕问题

kernel-4.4/drivers/input/keyboard/mediatek/kpd.c

 #include <linux/debugfs.h>
 
 #define KPD_NAME       "mtk-kpd"
-#define MTK_KP_WAKESOURCE      /* this is for auto set wake up source */
+
+
+//change by breeze 
+//#define MTK_KP_WAKESOURCE    /* this is for auto set wake up source */
 
 static struct dentry *kpd_droot;
 static struct dentry *kpd_dklog;