Android:完全控制手机(kiosk模式)，有可能吗？如何？

Question

我们在手机上安装了一个程序，并将手机借给用户一段时间。我们希望手机仅用于运行我们的应用程序(没有电话，没有游戏，没有任何东西)。手机将被 Root 。

所以我们需要的东西:

• 全屏运行，没有其他内容可见
• 主页按钮和其他设备按钮不起作用
• 我们的应用会在启动时自动运行

它不必是“防黑客”，但应该足以防止普通用户弄乱设备。

这可能吗？我在 Symbian 和 Windows Mobile 上做过类似的事情，但我对 Android 上的这些东西没有太多经验。如何做到这一点？

2015 年更新:如果您不介意将您的应用程序限制为单一手机供应商，三星推出了 KNOX SDK，可让您实现自助服务终端模式，并且无需 root 手机即可轻松实现。详情见:https://seap.samsung.com/developer/sdk/knox-standard-android

Answer 1

可以，但您无法控制 Home key 和 end call key 的行为。

对于全屏添加 android:theme="@android:style/Theme.NoTitleBar.Fullscreen" 到 list 文件中的 Activity 标记。

要禁用来电，您需要接听电话:

import android.app.Service;
import android.os.IBinder;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;

public class MyPhoneStateListener extends Service{

    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

    @Override
    public void onCreate() {
        super.onCreate();
            StateListener phoneStateListener = new StateListener();
            TelephonyManager telephonymanager = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
            telephonymanager.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);

    }

    class StateListener extends PhoneStateListener{
        @Override
        public void onCallStateChanged(int state, String incomingNumber) {
            super.onCallStateChanged(state, incomingNumber);
            switch(state){
                case TelephonyManager.CALL_STATE_RINGING:
                    //Disconnect the call here...
                    break;
                case TelephonyManager.CALL_STATE_OFFHOOK:
                    break;
                case TelephonyManager.CALL_STATE_IDLE:
                    break;
            }
        }
    };

    @Override
    public void onDestroy() {

    }
}

注意:停止服务时不要忘记删除监听器并将这些权限添加到 list 文件中:

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

并以编程方式断开调用:

try{
    TelephonyManager manager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
    Class c = Class.forName(manager.getClass().getName());
    Method m = c.getDeclaredMethod("getITelephony");
    m.setAccessible(true);
    ITelephony telephony = (ITelephony)m.invoke(manager);
    telephony.endCall();
} catch(Exception e){
    Log.d("",e.getMessage());
}

注意:添加此文件以断开调用: http://dl.dropbox.com/u/31740476/ITelephony.aidl

要禁用您需要覆盖的键:

@Override
public boolean dispatchKeyEvent(KeyEvent event) {
    if(KeyEvent.KEYCODE_MENU == event.getKeyCode() || KeyEvent.KEYCODE_DPAD_LEFT==event.getKeyCode()
            || KeyEvent.KEYCODE_DPAD_DOWN==event.getKeyCode() || KeyEvent.KEYCODE_DPAD_RIGHT==event.getKeyCode()
            || KeyEvent.KEYCODE_DPAD_UP==event.getKeyCode() || KeyEvent.KEYCODE_DPAD_CENTER==event.getKeyCode()
            || KeyEvent.KEYCODE_BACK==event.getKeyCode())
    {
        return false;
    }
    return true;
}

按下 Home 键会出现主屏幕，所以要克服这个问题，您需要实现一个服务，并且您需要实现一个无限线程来重新启动您的应用，如下所示:

public class AppTrackingService extends Service {

    private RunnableThread thread;
    private Context ctx;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    public void onCreate(){
        super.onCreate();
        ctx = AppTrackingService.this;
        thread = new RunnableThread();
    }

    public void onStart(Intent intent, int startid) {
        try{
            if(thread==null) thread = new RunnableThread();
            thread.startThread();
        }catch(Exception e){  }
    }

    class RunnableThread extends Thread {

        Handler back_handler = new Handler();
        boolean isContinue = false;

        public RunnableThread(){
            isContinue = false;
        }

        public void setIsContinue(boolean val){
            this.isContinue = val;
        }

        public void startThread(){
            isContinue = true;
            start();
        }

        public void run(){
            ActivityManager actMngr = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
            while(isContinue){
                try{
                //Maintain a boolean "isyourapprunning" to know if your app was running or not....
                    if(isyourapprunning){
                    String runningPkg = actMngr.getRunningTasks(1).get(0).topActivity.getPackageName();
                        if (!runningPkg.equals(ctx.getPackageName())){
                                launchApp(ctx.getPackageName());
                            }
                        Thread.sleep(2500);  //2.5 secs
                    }else{
                        isContinue = false;
                        stopSelf();
                    }

                }catch(Exception e){ }
            }//end of while loop
        }

        protected void launchApp(String packageName) {
            Intent mIntent = getPackageManager().getLaunchIntentForPackage(packageName);
            mIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            mIntent.addFlags(Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
            if (null != mIntent) {
                try {
                    startActivity(mIntent);
                } catch(Exception e) { }
            }
        }
    }
}

编辑

您需要添加以下权限才能结束通话:

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

您可以使用以下 AIDL 文件:

package com.android.internal.telephony;

/**
 * Interface used to interact with the phone.  Mostly this is used by the
 * TelephonyManager class.  A few places are still using this directly.
 * Please clean them up if possible and use TelephonyManager instead.
 *
 * {@hide}
 */
interface ITelephony {
    /**
     * End call if there is a call in progress, otherwise does nothing.
     *
     * @return whether it hung up
     */
    boolean endCall();

    /**
     * Silence the ringer if an incoming call is currently ringing.
     * (If vibrating, stop the vibrator also.)
     *
     * It's safe to call this if the ringer has already been silenced, or
     * even if there's no incoming call.  (If so, this method will do nothing.)
     *
     * TODO: this should be a oneway call too (see above).
     *       (Actually *all* the methods here that return void can
     *       probably be oneway.)
     */
    void silenceRinger();
}