Java 以编程方式将锁屏设置为“无”？

Set lockscreen to "None" programmatically?

提问by Ranhiru Jude Cooray

I have the requirement to disable the lock screen and set the lock screen type to "None". My device is rooted (can run with SU permission) + can run as a system application with system permissions (under /system/app).

我需要禁用锁定屏幕并将锁定屏幕类型设置为“无”。我的设备是 root 的（可以使用 SU 权限运行）+ 可以作为具有系统权限的系统应用程序运行（在 /system/app 下）。

I have tried a few things to no avail.

我已经尝试了几件事无济于事。

Try 1

尝试 1

This seems to be deprecated and not working.

这似乎已被弃用并且不起作用。

KeyguardManager manager = (KeyguardManager) this.getSystemService(KEYGUARD_SERVICE);
KeyguardLock lock = manager.newKeyguardLock("abc");
lock.disableKeyguard(); 

Try 2

尝试 2

This didn't work either.

这也不起作用。

1. Mount system partition as writable
2. Edit /data/data/com.android.providers.settings/databases/settings.db

3. Execute the following SQL.

   INSERT OR REPLACE INTO system (name, value) VALUES ('lockscreen.disabled', '1');
INSERT OR REPLACE INTO secure (name, value) VALUES ('lockscreen.disabled', '1');

1. 将系统分区挂载为可写
2. 编辑 /data/data/com.android.providers.settings/databases/settings.db

3. 执行以下 SQL。

   INSERT OR REPLACE INTO system (name, value) VALUES ('lockscreen.disabled', '1');
INSERT OR REPLACE INTO secure (name, value) VALUES ('lockscreen.disabled', '1');

Try 3

尝试 3

Rebooted the machine but still no luck.

重新启动机器，但仍然没有运气。

android.provider.Settings.Secure.putLong(mContentResolver, Settings.Secure.LOCK_PATTERN_ENABLED, false);`
android.provider.Settings.Secure.putLong(mContentResolver, "lockscreen.password_type", DevicePolicyManager.PASSWORD_QUALITY_SOMETHING);`
android.provider.Settings.Secure.putLong(mContentResolver, "lockscreen.password_type_alternate", DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED);
android.provider.Settings.Secure.putLong(mContentResolver, "lockscreen.disabled", true);

Is there anything else that I can try?

还有什么我可以尝试的吗？

Please note that I do not want to disable the keyguard only when application is running.

请注意，我不想仅在应用程序运行时禁用键盘保护。

回答by Solution

you have to declare this uses-permission on AndroidManifest:

你必须在 AndroidManifest 上声明这个使用权限：

<uses-permission android:name="android.permission.WAKE_LOCK" />

And in your code:

在你的代码中：

PowerManager powerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
WakeLock wakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, "My Lock");
wakeLock.acquire();

when your application is destroyed or paused to release this lock using below:

当您的应用程序被销毁或暂停以释放此锁时，请使用以下命令：

wakeLock.release();

I suggested to call the acquireinside the onResume()of your activity and the releasein onPause().

我建议在您的活动的onResume()中调用获取，并在onPause() 中调用释放。

回答by exilit

After searching a little bit in the android sourcei stick now within a function called onPreferenceTreeClickfrom the class ChooseLockGenericwhich seems to be called when the unlock method is chosen (in the preferences).

在 android源代码中搜索了一点之后，我现在坚持在onPreferenceTreeClick从类调用的函数中，该函数ChooseLockGeneric似乎在选择解锁方法时调用（在首选项中）。

In that method updateUnlockMethodAndFinishis called which sets the unlock method. So maybe calling updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED,true);could be exactly what you want.

在该方法updateUnlockMethodAndFinish中调用设置解锁方法。所以也许打电话updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED,true);可能正是你想要的。

I don't know whether this fit your needs and don't know whether this works (maybe there are any visibility problems or security mechanisms). I am just speculating.

我不知道这是否符合您的需求，也不知道这是否有效（可能存在任何可见性问题或安全机制）。我只是在猜测。

EDIT: This could help also: startFragment(this,"com.android.settings.ChooseLockGeneric$ChooseLockGenericFragment",SET_OR_CHANGE_LOCK_METHOD_REQUEST, null);

编辑：这也可以帮助： startFragment(this,"com.android.settings.ChooseLockGeneric$ChooseLockGenericFragment",SET_OR_CHANGE_LOCK_METHOD_REQUEST, null);

回答by superb

You can try this:

你可以试试这个：

adb shell sqlite3 /data/system/locksettings.db "UPDATE locksettings SET value = '1' WHERE name = 'lockscreen.disabled'"

adb shell sqlite3 /data/system/locksettings.db "UPDATE locksettings SET value = '0' WHERE name = 'lockscreen.password_type'"

adb shell sqlite3 /data/system/locksettings.db "UPDATE locksettings SET value = '0' WHERE name = 'lockscreen.password_type_alternate'"

It works on my rooted Nexus 4.

它适用于我扎根的 Nexus 4。

回答by Yeung

I would like to explore exilitanswer. From the source, we finally get into this:

我想探索流亡的答案。从源头上，我们终于进入了这个：

mChooseLockSettingsHelper.utils().clearLock(false);
mChooseLockSettingsHelper.utils().setLockScreenDisabled(disabled);

The utils is the com.android.internal.widget.LockPatternUtilsobject and we can somehow get it by reflection. Here is the code:

utils 是com.android.internal.widget.LockPatternUtils对象，我们可以通过反射以某种方式获取它。这是代码：

    try{
            Class lockPatternUtilsCls = Class.forName("com.android.internal.widget.LockPatternUtils");
            Constructor lockPatternUtilsConstructor = 
                lockPatternUtilsCls.getConstructor(new Class[]{Context.class});
            Object lockPatternUtils = lockPatternUtilsConstructor.newInstance(MyActivity.this);

            Method clearLockMethod = lockPatternUtils.getClass().getMethod("clearLock", boolean.class);
            Method setLockScreenDisabledMethod = lockPatternUtils.getClass().getMethod("setLockScreenDisabled", boolean.class);

            clearLockMethod.invoke(lockPatternUtils, false);
            setLockScreenDisabledMethod.invoke(lockPatternUtils, true);                 
            Log.d(TAG, "set lock screen to NONE SUC");
    }catch(Exception e){
            Log.e(TAG, "set lock screen to NONE failed", e);
    }

Well my testing app is with signed with platform key and a system app. I think it will be a must.

那么我的测试应用程序是用平台密钥和系统应用程序签名的。我认为这将是必须的。

Updated: Noticed that the methods arguments are changed on Android 6.

更新：注意到方法参数在 Android 6 上发生了变化。

回答by jmatocha

I tried modifying /data/system/locksettings.db as was suggested by @ByteHamster, with no luck.

我尝试按照@ByteHamster 的建议修改 /data/system/locksettings.db，但没有成功。

adb shell sqlite3 /data/system/locksettings.db "UPDATE locksettings SET value = '1' WHERE name = 'lockscreen.disabled'"

adb shell sqlite3 /data/system/locksettings.db "UPDATE locksettings SET value = '1' WHERE name = 'lockscreen.disabled'"

I then renamed the locksettings.dbto locksettings.db.oldand rebooted. The lockscreen was gone and Android rebuilt the locksettings.dbfile itself.

然后我将其重命名locksettings.db为locksettings.db.old并重新启动。锁屏消失了，Android 重建了locksettings.db文件本身。

I am using TWRP recoveryon a Samsung Galaxy S4.

我在三星 Galaxy S4 上使用TWRP 恢复。

回答by Satheesh

I have acheived in root tablet,

我已经在根平板电脑上实现了，

Below is my full procedure

以下是我的完整程序

adb push sqlite3 /sdcard/sqlite3

adb push sqlite3 /sdcard/sqlite3

adb shell

亚行外壳

su

苏

mount -o remount,rw /system

mount -o remount,rw /system

cp /sdcard/sqlite3 /system/xbin/sqlite3

cp /sdcard/sqlite3 /system/xbin/sqlite3

chmod 755 /system/xbin/sqlite3

chmod 755 /system/xbin/sqlite3

mount -o remount,ro /system

mount -o 重新挂载，ro /system

adb shell sqlite3 /data/system/locksettings.db

adb shell sqlite3 /data/system/locksettings.db

UPDATE locksettings SET value = '1' WHERE name = 'lockscreen.disabled'

UPDATE locksettings SET value = '1' WHERE name = 'lockscreen.disabled'

You can download the file from http://www.digitechhub.com/sqlite3

您可以从http://www.digitechhub.com/sqlite3下载该文件

回答by JerryGoyal

use adb shell locksettings clear --old xxxxto instantly remove the lockscreen lock (even when the phone is in locked state) xxxxis the pattern number, refer below image. Example: locksettings clear --old 1236

用于adb shell locksettings clear --old xxxx立即解除锁屏锁定（即使手机处于锁定状态） xxxx是模式编号，请参阅下图。例子：locksettings clear --old 1236

To again set the pattern use: locksettings set-pattern 1236

要再次设置模式，请使用： locksettings set-pattern 1236

---

---

usage:

用法：

   locksettings set-pattern [--old OLD_CREDENTIAL] NEW_PATTERN
   locksettings set-pin [--old OLD_CREDENTIAL] NEW_PIN
   locksettings set-password [--old OLD_CREDENTIAL] NEW_PASSWORD
   locksettings clear [--old OLD_CREDENTIAL]
   locksettings verify [--old OLD_CREDENTIAL]
   locksettings set-disabled DISABLED
   locksettings get-disabled