Device Administration 设备管理开发

设备管理开发

Device Administration

1.creat the manifest

<receiver android:name=".app.DeviceAdminSample$DeviceAdminSampleReceiver"

      android:label="@string/sample_device_admin"

      android:description="@string/sample_device_admin_description"

      android:permission="android.permission.BIND_DEVICE_ADMIN">

  <meta-data android:name="android.app.device_admin"

          android:resource="@xml/device_admin_sample" />

  <intent-filter>

      <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />

  </intent-filter>

</receiver>

ps:注意：

 1）权限

android:permission="android.permission.BIND_DEVICE_ADMIN"

2）资源文件：

android:resource="@xml/device_admin_sample"

xml:

<device-admin xmlns:android="http://schemas.android.com/apk/res/android">

  <uses-policies>

    <limit-password />           //长度限定

    <watch-login />              //监控登陆

    <reset-password />       //重置密码

    <force-lock />               //锁屏

    <wipe-data />         //初始化

    <expire-password />          //终止密码

    <encrypted-storage />        //加密储存

    <disable-camera />           //禁止相机

  </uses-policies>

</device-admin>

3）action：

android:name="android.app.action.DEVICE_ADMIN_ENABLED"

重写DeviceAdminReceiver可以管理设备。

2.主要有三个类

DeviceAdminReceiver：重写相关操作

DeviceAPolicyManager：必须有一个DeviceAdminReceiver用户目前启用。DevicePolicyManager管理政策的一个或多个DeviceAdminReceiver实例

DeviceAdminInfo：该类用于为设备管理员指定元数据组件。

3.继承实现一个DeviceAdminRecevier

public class DeviceAdminSample extends DeviceAdminReceiver {

  void showToast(Context context, String msg) {

      String status = context.getString(R.string.admin_receiver_status, msg);

      Toast.makeText(context, status, Toast.LENGTH_SHORT).show();

  }


  @Override

  public void onEnabled(Context context, Intent intent) {

      showToast(context, context.getString(R.string.admin_receiver_status_enabled));

  }


  @Override

  public CharSequence onDisableRequested(Context context, Intent intent) {

      return context.getString(R.string.admin_receiver_status_disable_warning);

  }


  @Override

  public void onDisabled(Context context, Intent intent) {

      showToast(context, context.getString(R.string.admin_receiver_status_disabled));

  }


  @Override

  public void onPasswordChanged(Context context, Intent intent) {

      showToast(context, context.getString(R.string.admin_receiver_status_pw_changed));

  }

...

}

4.授权

1）创建一个Intent 添加设备管理员

Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);

2）激活广播接收者

ComponentName who = new ComponentName(this, DeviceAdminSample.class);

3）授权设备管理员

intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, who);

4）开启广播

startActivityForResult(intent, REQUEST_CODE_ENABLE_ADMIN);

5.devicepolicyManager

ps:ComponentName（组件名称）是用来打开其他应用程序中的Activity或服务的

类似：inflater

方法：

当前最大测试次数，当超过次数就清除数据

getMaximumFailedPasswordsForWipe (ComponentName admin)

//删除用户管理员权限

removeActiveAdmin（ComponentName admin）

//重置密码

resetPassword（String password，int flags）

//设置用户所有者的信息显示在锁屏上

setDeviceOwnerLockScreenInfo

void setDeviceOwnerLockScreenInfo (ComponentName admin,

              CharSequence info)

1）获取方式：

DevicePolicyManager mDPM =

(DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);

2）功能

a.set password polocies 设置密码相关的

b.set device lock   设置锁屏

c.Perform data wipe  执行数据清除

3）具体操作

1.设置密码

  Intent intent = new Intent(DevicePolicyManager.ACTION_SET_NEW_PASSWORD);

  startActivity(intent);

2.设置密码相关的限制

  属性：

    PASSWORD_QUALITY_ALPHABETIC：必须至少一个字母

    PASSWORD_QUALITY_ALPHANUMERIC：至少一个数字和字母

    PASSWORD_QUALITY_NUMERIC：至少包含数字

    PASSWORD_QUALITY_COMPLEX:至少一个数字，字母和特殊符号

    PASSWORD_QUALITY_SOMETHING：无限制、

    PASSWORD_QUALITY_UNSPECIFIED：无密码要求

  用法：

    DevicePolicyManager mDPM;

    ComponentName mDeviceAdminSample;

    ...

    mDPM.setPasswordQuality(mDeviceAdminSample, DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC);

3.设置密码内容

  可以对上面的微调

    setPasswordMinimumLetters()

    setPasswordMinimumLowerCase()

    setPasswordMinimumUpperCase()  

    setPasswordMinimumNonLetter()

    setPasswordMinimumNumeric()

    setPasswordMinimumSymbols()

  setPasswordMinimumLength()   密码长度

  setMaximumFailedPasswordsForWipe()  测试次数

  setPasswordExpirationTimeout()   设置密码到期时间

  setPasswordHistoryLength()  设置限制历史密码的数量

  ex:(设置至少两个大写字母)

    DevicePolicyManager mDPM;

    ComponentName mDeviceAdminSample;

    int pwMinUppercase = 2;

    ...

    mDPM.setPasswordMinimumUpperCase(mDeviceAdminSample, pwMinUppercase);

4.设置锁屏的时间

  ex:

  DevicePolicyManager mDPM;

  ComponentName mDeviceAdminSample;

  ...

  long timeMs = 1000L*Long.parseLong(mTimeout.getText().toString());

  mDPM.setMaximumTimeToLock(mDeviceAdminSample, timeMs);


  锁屏的方法：

  DevicePolicyManager mDPM;

  mDPM.lockNow()；


5.初始化数据

  DevicePolicyManager mDPM;

  mDPM.wipeData(0);  //默认一定为0

6.关闭相机

  通过复选控件控制相机使用

  ex:

    private CheckBoxPreference mDisableCameraCheckbox;

    DevicePolicyManager mDPM;

    ComponentName mDeviceAdminSample;

    ...

    mDPM.setCameraDisabled(mDeviceAdminSample, mDisableCameraCheckbox.isChecked())

7.加密数据

  DevicePolicyManager mDPM;

  ComponentName mDeviceAdminSample;

  ...

  mDPM.setStorageEncryption(mDeviceAdminSample, true);