转帖自:rootfs.wordpress.com
[Android] Enable HOME screen lock and HOME key
July 23, 2010 by rootfs
The lock patten does not take effect after setting. And the HOME key does not work.
1. frameworks/policies/base/phone/com/android/internal/policy/impl/KeyguardViewMediator.java.
In private void doKeyguard() routine:
final boolean provisioned = mUpdateMonitor.isDeviceProvisioned();
…
if (!lockedOrMissing && !provisioned) {
if (DEBUG) Log.d(TAG, “doKeyguard: not showing because device isn’t provisioned”
+ ” and the sim is not locked or missing”);
return;
}
2.?? frameworks/policies/base/phone/com/android/internal/policy/impl/KeyguardUpdateMonitor.java.
public boolean isDeviceProvisioned() {
return mDeviceProvisioned;
}
In public KeyguardUpdateMonitor(Context context) routine:
mDeviceProvisioned = Settings.Secure.getInt(
mContext.getContentResolver(), Settings.Secure.DEVICE_PROVISIONED, 0) != 0;
3. frameworks/base/core/java/android/provider/Settings.java
public static final String DEVICE_PROVISIONED = Secure.DEVICE_PROVISIONED;
The default value for device_provisioned is 0, need set it to 1.
Fix: (Ubuntu host)
$ cd /opt/nfs/tiomap2430/android/data/data/com.android.providers.settings/databases
$ sqlite3 settings.db
Sqlite> .tables
Sqlite> ??select * from secure;
Sqlite> ??INSERT INTO secure (name, value) VALUES (‘device_provisioned’, 1);
Sqlite> ??.exit;
$
Reboot the phone, lock screen shows up. Note that this modification also enables the HOME and some other key functions.