java - 如何请求root权限

Question

我想在我的 Kiosk 应用程序中请求 Root 权限。我读到，当您的设备获得 root 权限时，应用程序可以获得 super 用户权限。

所以现在的主要问题是我的应用程序没有请求 super 用户权限，因此 Kingo、King Root 等没有检测到它请求 su 权限。我如何请求 super 用户访问权限？我要求这样做的原因是因为我想使用 super 用户访问权限锁定我的应用程序。因为这将是一个信息亭应用程序。

这些是我在浏览指南时已经添加的内容: list .xml

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

device_admin.xml

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

    <uses-policies>
        <limit-password />
        <watch-login />
        <reset-password />
        <force-lock />
        <wipe-data />
        <expire-password />
        <encrypted-storage />
        <disable-camera />
        <disable-keyguard-features />
        <force-lock/>
    </uses-policies>

</device-admin>

MyDeviceAdminReceiver

public class MyDeviceAdminReceiver extends DeviceAdminReceiver {

    private static final String TAG = "DeviceOwnerApp";

    @Override
    public void onLockTaskModeEntering(Context context, Intent intent, String pkg) {
        Toast.makeText(context, "Lock task mode entered", LENGTH_LONG).show();
        Log.i(TAG, "Lock task mode entered");
        Log.i(TAG, "action  : " + intent.getAction());
        Log.i(TAG, "package : " + intent.getStringExtra(DeviceAdminReceiver.EXTRA_LOCK_TASK_PACKAGE));
    }

    @Override
    public void onLockTaskModeExiting(Context context, Intent intent) {
        Toast.makeText(context, "Lock task mode exited", LENGTH_LONG).show();
        Log.i(TAG, "Lock task mode exited");
        Log.i(TAG, "action  : " + intent.getAction());
        Log.i(TAG, "package : " + intent.getStringExtra(DeviceAdminReceiver.EXTRA_LOCK_TASK_PACKAGE));
    }
}

LollipopApplocker

public class LollipopAppLocker extends AppLocker {

    public LollipopAppLocker(Context context) {
        super(context);
    }

    @TargetApi(21)
    public boolean lockApp(Activity activity) {

        if (isAppInLockTaskMode() == true) {
            Toast.makeText(mContext, "Error: app is device owner", Toast.LENGTH_SHORT).show();
            return true;
        }


            ComponentName deviceAdmin = new ComponentName(mContext, MyDeviceAdminReceiver.class);
            new AlertDialog.Builder( mContext )
                    .setTitle( "Missing privilege" )
                    .setMessage( "App needs to be device admin for all functionallities to work properly" )
                    .setPositiveButton( android.R.string.yes, new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {

                        }
                    } );

        DevicePolicyManager mDpm = (DevicePolicyManager) mContext.getSystemService(Context.DEVICE_POLICY_SERVICE);
        if (!mDpm.isAdminActive(deviceAdmin)) {
            Toast.makeText(mContext, "Error: app is not device admin", Toast.LENGTH_SHORT).show();

            return false;
        }

        if (mDpm.isDeviceOwnerApp(mContext.getPackageName())) {
            mDpm.setLockTaskPackages(deviceAdmin, new String[]{mContext.getPackageName()});
        } else {
            Toast.makeText(mContext, "Error: app is not device owner", Toast.LENGTH_SHORT).show();
            return false;
        }

        if (mDpm.isLockTaskPermitted(mContext.getPackageName())) {
            activity.startLockTask();
        } else {
            Toast.makeText(mContext, "kiosk_not_permitted", Toast.LENGTH_SHORT).show();
            return false;
        }

        return true;
    }

    public boolean isAppInLockTaskMode() {
        ActivityManager activityManager=(ActivityManager)mContext.getSystemService(mContext.ACTIVITY_SERVICE);
        if(Build.VERSION.SDK_INT >=Build.VERSION_CODES.M) { // When SDK version is 23
            int lockTaskMode=activityManager.getLockTaskModeState();
            return lockTaskMode != ActivityManager.LOCK_TASK_MODE_NONE ? true : false;
        }
        else if(Build.VERSION.SDK_INT >=Build.VERSION_CODES.LOLLIPOP &&
                Build.VERSION.SDK_INT< Build.VERSION_CODES.M) {
            //When SDK version <=21 and <23. This API is deprecated in 23.
            return activityManager.isInLockTaskMode();
        }
        else {
            return false;
        }
    }


    @TargetApi(21)
    public boolean unlockApp(Activity activity) {

           if (isAppInLockTaskMode()) {
            activity.stopLockTask();
        }

        return true;
    }
}

使用显示的代码，我无法获得root权限。我似乎做了一些我无法反抗的错事？知道我如何才能获得设备管理员权限吗？

编辑:

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

这行代码似乎在 5.0 及更高版本中已不再使用。

使用第一个答案中的解决方案，应用程序仍然没有根访问权限，并且这部分代码会触发，因为我仍然不是 super 用户触发:

        if (!mDpm.isAdminActive(deviceAdmin)) {
            Toast.makeText(mContext, "Error: app is not device admin", Toast.LENGTH_SHORT).show();

            return false;
        }

Answer 1

启动设置应用程序 启用开发者模式 返回主设置菜单 一直向下滚动并点击“开发者选项”选项 向下滚动并点击“根访问”选项 点击“仅应用程序”或“应用程序和 ADB”选项