实用地从系统应用卸载应用，无需用户交互android 8.1

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

public class MyDeviceAdminReceiver extends DeviceAdminReceiver {
    // 实现必要的方法
}

<receiver
    android:name=".MyDeviceAdminReceiver"
    android:permission="android.permission.BIND_DEVICE_ADMIN">
    <meta-data
        android:name="android.app.device_admin"
        android:resource="@xml/device_admin_receiver" />

    <intent-filter>
        <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
    </intent-filter>
</receiver>

DevicePolicyManager dpm = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
ComponentName adminComponent = new ComponentName(this, MyDeviceAdminReceiver.class);

if (!dpm.isAdminActive(adminComponent)) {
    Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
    intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, adminComponent);
    intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, "请激活设备管理员权限");
    startActivity(intent);
}

dpm.uninstallPackage("com.example.app.package");