安卓ApiDemos学习 app/Device Admin/DeviceAdminSample

首先是启动和关闭ActiveAdmin

启动ActiveAdmin

Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN,mDeviceAdminSample);intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,          "Additional text explaining why this needs to be added.");startActivityForResult(intent, RESULT_ENABLE);

向Intent中设置DevicePolicyManager.EXTRA_DEVICE_ADMIN，本例设置了一个ComponentName

mDeviceAdminSample = new ComponentName(Controller.this, DeviceAdminSample.class);

设置EXTRA_ADD_EXPLANATION的文字会表示在权限确认画面上，如下图

删除ActiveAdmin

mDPM.removeActiveAdmin(mDeviceAdminSample);

设置密码相关配置。首先要确定当前activity是否已经启动了AdminActive模式

如果是的话，利用DevicePolicyManager的方法，设置密码配置

boolean active = mDPM.isAdminActive(mDeviceAdminSample);            if (active) {                mDPM.setPasswordQuality(mDeviceAdminSample, pwQuality);                mDPM.setPasswordMinimumLength(mDeviceAdminSample, pwLength);                mDPM.setMaximumFailedPasswordsForWipe(mDeviceAdminSample, maxFailedPw);            }

更改屏幕锁定password需要启动系统画面

Intent intent = new Intent(DevicePolicyManager.ACTION_SET_NEW_PASSWORD);startActivity(intent);

Restpassword方法中，首先判定用户是否是管理员。

if (mAM.isUserAMonkey()) {                    // Don't trust monkeys to do the right thing!                    AlertDialog.Builder builder = new AlertDialog.Builder(Controller.this);                    builder.setMessage("You can't reset my password because you are a monkey!");                    builder.setPositiveButton("I admit defeat", null);                    builder.show();                    return;                }

如果是，则重置密码

mDPM.resetPassword(mPassword.getText().toString(),          DevicePolicyManager.RESET_PASSWORD_REQUIRE_ENTRY);