Android系统取消开机锁屏功能和永不熄屏

• 源码

frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

private void upgradeScreenTimeout(SQLiteDatabase db) {
    // Change screen timeout to current default
    db.beginTransaction();
    SQLiteStatement stmt = null;
    try {
        stmt = db.compileStatement("INSERT OR REPLACE INTO system(name,value)"
                + " VALUES(?,?);");
        loadIntegerSetting(stmt, Settings.System.SCREEN_OFF_TIMEOUT,
                R.integer.def_screen_off_timeout);
        db.setTransactionSuccessful();
    } finally {
        db.endTransaction();
        if (stmt != null)
            stmt.close();
    }
}

private void loadSystemSettings(SQLiteDatabase db) {
    SQLiteStatement stmt = null;
    try {
        stmt = db.compileStatement("INSERT OR IGNORE INTO system(name,value)"
                + " VALUES(?,?);");

        loadBooleanSetting(stmt, Settings.System.DIM_SCREEN,
                R.bool.def_dim_screen);
        loadIntegerSetting(stmt, Settings.System.SCREEN_OFF_TIMEOUT,
                R.integer.def_screen_off_timeout);
		···
	}
		···
}

frameworks/base/packages/SystemUI/AndroidManifest.xml
//锁屏服务
<service
	android:name=".keyguard.KeyguardService"
	android:exported="true"
	android:enabled="@bool/config_enableKeyguardService" />

• 实现

diff --git a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
index a8c05e1..a6b9f1c 100755
--- a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
+++ b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
@@ -18,7 +18,7 @@
 -->
 <resources>
     <bool name="def_dim_screen">true</bool>
-    <integer name="def_screen_off_timeout">60000</integer>
+    <integer name="def_screen_off_timeout">2147483647</integer>
     <integer name="def_sleep_timeout">-1</integer>
     <bool name="def_airplane_mode_on">false</bool>
     <bool name="def_theater_mode_on">false</bool>
diff --git a/frameworks/base/packages/SystemUI/res/values/config.xml b/frameworks/base/packages/SystemUI/res/values/config.xml
index 0c018d7..4436a9d 100755
--- a/frameworks/base/packages/SystemUI/res/values/config.xml
+++ b/frameworks/base/packages/SystemUI/res/values/config.xml
@@ -224,7 +224,7 @@
     <item name="recents_layout_unfocused_range_max" format="float" type="integer">2.5</item>
 
     <!-- Whether to enable KeyguardService or not -->
-    <bool name="config_enableKeyguardService">true</bool>
+    <bool name="config_enableKeyguardService">false</bool>
 
     <!-- The maximum count of notifications on Keyguard. The rest will be collapsed in an overflow
      card. -->

• 通过adb命令获取休眠时间

#获取屏幕休眠时间
C:\Users\Admin>adb shell settings get system screen_off_timeout
60000

#休眠时间修改为最大值，最大值就是永不休眠
C:\Users\Admin>adb shell settings put system screen_off_timeout 2147483647